01. CEC Application & Attachments
Contents
1. f POLICE OPEN SS PARKING SPACE M 093222 277 E H m eee N SaaS SSS I S M TUM TORON ON TO FAL ON TOP SS VEHICLES a Heh teh Sh See eee as E lt WATERPROOFING AND 2 2 2 2 _ SCREED TO FALL eel pri B METAL ROOF SHEETING sas Sea eae i E PHASE 18 GENERAL COMMENTS FIRST ISSUE REVISIONS SUBMISSIONS EI POLICE STATIONS PROJECT MORUGA ROOF PLAN t 23 2 4 s 4 Lo 4 gt 2 eet 2 o 255 gt 2 23 zzi Y TP 7X E 2 4129081 M T 4 gt a abel a oe wl a t ee 7 4 le te Eri 1 218 45 Park2. SS PROPERTY MALE CHANGE Ee EXHIBITS ROOM LOCKERS 2 x i gt a _ il a il REFERENCE EMERGENCY SUPPLY GENERAL NOTE 1 General FFL 14 725 2 NO BURGLAR BARS AT WINDOWS FOR THIS STATION 4 4 na 5 xe f i i i REFERENCE i DT e a LL hh hd hh hhh A Sich E TET 54 1 j X ET E TE eo 12 00 MORUGA POLICE STATION FIRST FLOOR AREA A 424 0 m2 5500 5500 5500 5500 5500 Apoo 2 22 20 27 Ld heh hk hh hh LL GEAL LL LL LL LL RL ARL ALALA DIESEL TANK Auto D contro Police Access CAN 7 ad 2 Mum POLICE OPEN CUSTODIAN PARKING SPAGE OFFFICE N AG ASSET SS y 27 27 27 20 80 TOW f 4 M 22222 42 24 2 L7 1 CSAS SS
3. Ny t N POLICE OPEN PARKING SPACE Road a C o ul IMPOUND VEHICLES n 0165 e m 42 013100 E MORUGA POLICE STATION SECOND FLOOR AREA A 262 0 m2 M amp E REFUSE STORE e ae Trinidad Tobago Mac 24 GENIVAR Sceles as stated hereon ore volid the or 1 drowing the dimensions of which are 30x45 5 These scoles noted hereon ore hereby cho by the ratio of the overall sheet dimensions of the print to the corresponding dimensions of the original drawing This drowing is the property of BBTTCC and is not to be reproduced or copied in whole or in port t only to be used for the project ond site specifically identified herein and is not to be used on any other project It is to be returned upon request KEYNOTE LEGEND indicates 200mm thick CMU blocks all other walls are 150mm thick blocks REFERENCE GENERAL NOTE 1 General FFL 18 60 2 NO BURGLAR BARS AT WINDOWS FOR THIS STATION REFERENCE PHASE 1B GENERAL COMMENTS zm REVISIONS SUBMISSIONS TRINIDAD POLICE STATIONS PROJECT MORUGA SECOND FLOOR Drawing Title Moruga Road KEYNOTE LEGEND CONCRETE SLAB WITH
4. SCHEDULE FORM A Rule 3 1 CERTIFICATE OF ENVIRONMENTAL CLEARANCE RULES 2001 APPLICATION FOR A CERTIFICATE OF ENVIRONMENTAL CLEARANCE This form must be completed in triplicate for any proposed activity identified the Schedule of the Certificate of Environmental Clearance Designated Activities Order 2001 Essential additional information such as plans maps diagrams photographs or text may be included in the application as an appropriately referenced attachment d To The Environmental hereby 9 s T Bedin Men Par Applicant Applicar gept Ap Attorney PRINT NAME V Signed ee eee Jl AA A ensue ARE ee 2 orporate Secretary PRINT NAME 4 er SAD AND TOBAGO LIMITED 4 927 ment Authority ificate Environmental Clearance CEC 38 40 Street Port of Spain FOR OFFICIAL USE ONLY Application Received AID Received by c DAE LE Ref No Acknowledgment Sent eoo rax rant Date e a Category of intended activity i New 1 Modification Ba please tick appropriate box iii Abandonment Decommissioning 71 PROJECT CLASSIFICATION Activity Definition Application requires CEC Y CJ N LJ Application requires ELA Y L N 1 CERTIFICATE OF ENVIRONMENTAL CLEARANCE
5. WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 26 28 Winter operation The operation of the WWTP its maintenance and attendance is similar to the summer period As a standard the WWTPs are installed as underground structures covered by heat cladded For this reason there no changes in the winter operation and increases demands for attendance Operation and measures taken during extraordinary operating conditions FLOODING in case of the risk of flooding disconnect power supply and dismantle the blowers FIRE extinguish using a foam extinguisher Maintenance of the blower Based on the delivered type the blower is operated and maintained according to the service conditions issued by the blower producer which are included in the delivered documentation 7 10 Health and safety The plant can only be operated by a person more than 18 years old physically and mentally capable of conducting such work and familiarized with these instructions The operation also includes activities related to the transport installation putting into operation and maintenance any intervention with the el part of the WWTP can only be performed by an authorised electro technician with corresponding qualification set by Directive No 50 1978 Sb the operator is obliged to following the instructions prescribed in these operating instructions and the operating rules approved by the relevant water authority the operator must
6. Poor sludge sedimentation may also be caused by inadequate inflow loading by unsuitable waters e g toxic water Sludge settling can be adjusted by additional coagulation This case must always be handled individually and it is always necessary to contact ASIO spol s r o or its authorised representative Extraction of excess sludge In case that sedimentation test proved high quantity of sludge in the activation system excess quantity of sludge is extracted with use of the mammoth pump of excess sludge Extracted sludge outflows through the outlet pipe to the sludge zone where it is stored together with the primary sludge and sludge liquor returns back to activation De sludging should be carried out for a period of approx 4 8 hours After completion of de sludging always test the residual volume of activated sludge in the activation The period depends on the condition and quantity of activated sludge Regular check of the sludge quantity and extraction of excess sludge in the sludge zone is the most important maintenance activity to secure proper plant operation 6 7 Servicing and spare parts Any service and spare parts can be ordered from ASIO spol s r o Tufanka 1 627 00 BRNO tel 548 428 111 fax 548 428 100 E mail asio asio cz Spare parts for the blower can also be ordered according to the instructions in the blower operating instructions Service can also be ordered from some of th
7. APPLICATION FORM GENERAL INFORMATION Name of applicant The Urban Development Corporation Of Trinidad and Tobago UDeCOTT 2 Postal Address 31 Sackville Street Port of Spain Electronic mailing address e mail address rogerm udecott com 3 Telephone no 868 624 7469 4 Fax No 868 623 0864 5 Location of proposed activity a District Village Moruga Village in Moruga b Street Name and Lot or LP No lune 6 Do you own the property which the activity is intended to be carried out YL NX If Yes please attach certified copies of Proof of ownership If No what is the nature of your interest in this property Please attach supporting documents justifying your claim e g lease Construction ol a Police Station 7 Names and addresses of adjoining property owners 8 a Previous Application for CEC for this site Y NX b If yes Reference No of most recent application 2 9 Activity for which required state the activity and definition categories under which you are applying reler to Order as well as the purpose of the project Activity DX Activity 08 Definition X C The clearing excavation grading or land filling of any area with a gradient of 1 4 or morc Purpose lo construct and operate a security police station for the Ministry of National Security of Trinidad and lobago on 1 704 square meters of land The building wi
8. sewage 5 If ves give details waste water treatment plant will be installed on site as per attachment 1 The drainage of the building will be directed to the road drainage on Moruga Road 14 Will the project require relocation of people _ houses facilities DX from the site If yes give details Actual police station will be relocated during the construction of the building 15 What percentage of the intended project area would be cleared of vegetation NONI o M 2 16 State mitigation measures for adverse impacts resulting during site preparation and the construction phase The significant construction related impacts are expected to be the spoils disposal A cleaning of the road will be organize to ensure that the access to the site remain cleaned 9 ee Operational Phase 17 State the required raw input materials and the quantities volumes kg or metric tons m to be kept in stock for the project as well as their respective rates of consumption kg or metric tons per day m per day NONE a Would the activity require any ancillary process related chemicals e g catalysts pesticides NO If yes state the quantity kg or metric tonnes m and rate of consumption o 19 ee QE b State the final products
9. size of the WWTP into which the pressure air from the blower is driven through the air distributor The membrane of aeration element is designed so that the holes are covered when the air input in closed and thus protects water infiltration to the bearing cylinder of aerator The membrane pores create small air bubbles which are equally dispersed in the whole activation tank during the proper function If it is found during the visual check that in one place of the activation tank the mixture water sludge is boiling there is no equal aeration on the all activation surface level it means that there is a membrane damage or an inlet hose is broken In this case the aeration element must be removed and the defect must be repaired For the better manipulation the aeration element is equipped with the guiding rope in the one side and on the other side the input hose is use for manipulation Foam is created on the tank level its colour shows us the proper operation of the activation process If the foam is white it indicates insufficient mass load of the plant wastewater is hungry there is no active sludge in the activation during new putting the plant into operation the white foam appears normally a reached height of tenths of cm and gradually changes its colour to the brown one with higher density after approx 3 4 weeks there is brown consistent foam with a thickness of approx 100 mm on the surface The white opalized foa
10. tofillin the assembly protocol handing over protocol certificate of warranty and record the putting of the plant into operation to the log book Sewage wastewater may be conveyed to the plant from the building for which the plan is designed The design of the plant and its technical parameters are dimensioned for treatment of wastewater corresponding to the composition and character of sewage wastewater according to CSN 756402 Wastewater treatment plants for up to 500 PE Potential changes in the use of the plant must be consulted with the author of the original design authorized service centre or the company ASIO spol s r o Waste in the building to which the plant is connected must not contain any substances which deteriorate or even disable life and reproduction of microorganisms that the Q function of the biological plant is based on see the relevant chapter Discharging of the following substances is forbidden Poisons and toxic substances Paints dissolving agents and chemical sprays undiluted acids and bases other chemicals such as developing agent fixatives etc M M WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 13 28 The biological wastewater treatment process in the plant is basically identical with the self purification process in the nature This indicates acertain vulnerability of the plant related to inadequate and incautious behav
11. 7 Supplier data Introduction Principles of safe use of the plant Identification of the plant Installation and start up of the plant Maintenance Servicing and spare parts 7 INSTALLATION OF WASTE WATER TREATMENT PLANT 7 1 7 4 ro 7 4 7 6 754 7 8 7 9 7 10 8 LIMITS APPLICABLE TO WASTEWATER CONVEYED TO THE WWTP Introduction Parts Description of the process Control of the mechanical equipment Putting of the WW into operation Putting of the WWTP out of operation Sludge removal Sludge removal before putting of the WWTP out of service Operator s activities Health and safety Page 1 28 20 20 20 21 22 23 23 25 24 24 26 28 WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 2 28 7 INTRODUCTION The waste water will be discharged by gravity through pipes and will be collected to a local waste water treatment plant WWTP to be installed within the compound Outlet water to be discharged to storm water drainage system Waste Water Treatment Plant discharge shall be in accordance with the Environmental Management Authority Requirements WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 3 28 2 EMA REQUIREMENTS Table 2 MAXIMUM PERMISSIBLE LEVEL OR CONDITION OF WATER POLLUTANTS DISC HARGED INTO THE ENVIRONMENT Water Pollutants Level or Condition Inland oastal Marine Surface Nearshore Offshore Water Environmentally Sensitive A
12. WASA and installations shall be in accordance with the requirements of the utility WASA The waste water will conform to the EMA water pollution management program h Would the activity discharge process related liquid effluent Y DIN If yes state the source composition discharge rate m per day and the ultimate effluent points The estimate quantity will be 1560 gallons per day The composition will follow the recommendation of the EMA as per table enclosed Table2 Maximum Permissible level or condition water pollutants discharged into the environment 1 Would this activity utilise any hazardous i e toxic flammable explosive radioactive etc substances Y NX If yes provide a listing of the substances and the quantities to be used or stored m ee em c _ _ _ 6 18 Would the project require storage of input and or waste material on site Y N If yes pive estimates of the quantities kg or metric tons for the storage of Waste Input material 20 oo a a Describe briel y the facilities allocated for this purpose 19 Indicate the mode s of transport intended for materials and equipment necessary for the operational Passenger vchicles and tractor trucks 20 Will the activity generate air emissions i e particulate emissions such as dust or pollutant paseous emissions during the operational phases If yes d
13. from the activation zone using the mammoth pump of excess sludge to the sludge zone WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 17 28 Check of the volume of activated sludge in the system The volume of sludge in the activation zone must be checked as follows Using a ladle on a stick take water from the activation and pour it into Imhoff cone of 1 liter graduated cylinder When taking water and sludge mixture the bower must be on The filled Imhoff cone or graduated cylinder usually a 1 liter cylinder with water and sludge must be put on a levelled surface and let settle down for 30 min Watch at what height there is a distinct border between water and sludge settled on the bottom Sludge monitoring in an Imhoff cone Imhoff cone Freshly taken mixture of water and sludge from activatioN after 30 min settling distinct border between water and sludge e g low sludge concentration min WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 18 28 The results of observation will provide information about the activated sludge concentration 12 48 Optimum concentration Low concentration of High concentration No activated sludge of activeted sludge activated sludge of activted sludge has been formed Optimum concentration of activated sludge The volume of settled sludge is 1 3 1 2 of the total taken volume which means that the volume of microorganisms in the activation is op
14. in a concrete tank with chloride We use an automatic pump system in order to measure the chloride that we use instead of tabs The chlorination pump with a concentration of NaOCl between 180 gr m3 and 300 gr m3 will give us the following pollutions Chloride 180mg liter the threshold is 250 mg liters in the EMA first schedule Total residual Chloride 0 2 As asked in the EMA first schedule The rejecting pollutants are not above the threshold of the EMA first schedule and so are not considered as pollutants The chlorination has been chosen instead of the UV filtration because there is less maintenance cost and it is more solid and reliable for long use WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 9 28 6 OPERATING MANUAL This user s manual includes important instructions and safety precautions You are kindly asked to read the manual carefully before starting using the plant 61 Supplier data Technical office ASIO spol s r o 56 1 627 00 Brno Slatina Valid from 1 6 2006 548 428 111 Web http www asio c2 E mail asio asio cz 6 2 Introduction The wastewater treatment plant AS VARIOcomp N hereunder the plant or WWTP is a product designed and manufactured to a standard corresponding to the state of the art scientific knowledge and technology This operating manual should allow you to become thoroughly familiar with the wastewater treatment plant and to ensu
15. mammoth pump is manual with hand valve which transports air under the mammoth pump trap The pipe of the mammoth pump for return sludge is equipped in the upper part with device for catching and dewatering of used air and a its overpressure is used again as a drive of further mammoth pump for controlled discharge of pre treated water from plant sedimentation tank Mammoth pump for excess sludge in case of increased sludge quantity in system activation sedimentation tank this pump secures the sludge discharging to the sludge tank The mammoth pump control is manual by means of hand valve which feed air to the mammoth pump piping pump switching on and off depends on the result of 30 min of sedimentation test In case of some suspicion that there is faulty function of some mammoth pump it is necessary to adjust pump eventually to render cleaning with use of pressure water Check and extraction of excess sludge In order to ensure proper operation of the plant it is necessary to provide optimum amount of activated sludge in the activation part of the plant Activated sludge consists of microorganisms that feed on impurities contained in wastewater which results in the treatment process As their gradually proliferate it is necessary to maintain their optimum volume in the activation For these reasons a part of the microorganisms must be extracted from the activation The extraction is performed by discharging of the mixture of water and sludge
16. of the attached drawing PLN M GF AR 1001 G GROUND FLOOR dog PLN M 1 AR 1002 G FIRST FLOORPLAN PLNIM 21 100316 __ FLOORPLAN __ M SP AR 1101 O SITE PLAN amp LANDSCAPING CO BBI PLNIM 1006 6 SITE LEVELS KEYNOTE LEGEND REFERENCE eit LT T 7 E V go t t 41 S X A PRS Ji i i 2 i M t a _ iit 4 7 de WALKWAY lt lt KY E XI I fi i i T qmm Tee SNSSSSSSSNSNNN 18 i 5555 Ade d l N i ee Rem m Will EET UN gt lt zh 11 0 T 1 SS 7 m 140 7 E peo NEW CONCRETE TOTAL SITE AREA A 1 706 0 m2 SITE AND LANDSCAPE PLAN 5500 5500 5500 5500 4 Ld TJ _ HHHH 5 RESPONSE 6097
17. to be derived and the rate of production metric tons m per year State intermediate products resulting from this activity indicating the rate of production metric 1 per year and their fate NONE m M 4 State the rate of production metric tons per year and method of disposal of domestic solid waste generated during the operational phase Following the report on the regional evaluation of municipal solid waste management services in Latin America and the Caribbean the average pollution is 2 20 kg day it will be an average of 30 50 kg day List characterise and quantify metric tons per year process related solid waste State the method s and location intended for their disposal Rubbish to be dumped at the Forres Park land fill f Provide respective estimates for the rate of generation mper day of domestic wastewater and sewage State the respective treatment methods intended for domestic wastewater and sewage as well as their ultimate effluent points Estimate Daily Domestic water consumption will be 1560 gallons estimate waste water production will be the same The wastewater will be managed by waster water treatment plant o eens om g State the source and process water consumption rate m per day _ All water service would be supplied by
18. 00 p D om 4a au 8 de d 8 T SE m z od UU g gt lt gt 2433 a a pow Ja SPRINKLERS S e 2 56 8001 a E 22222222227224 if PUMP ROOM H MULTI PURPOSE 8 A A 5 e 440000 2 4 19 35 HE RAMP 7 51 TOTAL SITE AREA A 1 706 0 m2 MORUGA POLICE STATION GROUND FLOOR AREA A 483 5 m2 Road KEYNOTE LEGEND indicates 200mm thick CMU blocks all other walls are 150mm thick blocks REFERENCE GENERAL NOTE 1 General FFL 11 00 2 NO BURGLAR BARS AT WINDOWS FOR THIS STATION REFERENCE PHASE 1B GENERAL COMMENTS REVISIONS SUBMISSIONS Date 3 A E a POLICE STATIONS PROJECT MORUGA 9 4 4 Trinidad udecott Ot Taatad Rad mod GENIVAR Scoles os stated hereon are valid on the 5500 5500 5500 5500 5500 other project It i to be returned upon request 5 m rta 4 7 44 4 2 KEYNOTE LEGEND indicates 200mm thick CMU blocks all other walls are 150mm thick blocks CL a SOD QUARTERS
19. It is recommended that a specialised experienced company should be engaged and the sludge should be removed using a gully sucker The sludge is extracted from the sludge tank as follows open the lid covering the sludge space switch off the WWTP using the circuit breaker and insert carefully the suction basket to the sludge spaces to ca half of the level The gully sucker first extracts water from the central part of the sludge tank and then discharges the water back to tank so as to mix and homogenize the content of the sludge tank Then the hose of the gully sucker is dropped to the bottom of the tank and all the volume is sucked out with ca a 200 mm layer of a mixture of water sludge on the tank bottom Immediately after extracting the sludge the WWTP must be refilled with water up to the original level The WWTP is then put back into operation WARNING Incautious handling of the suction basket of the gully sucker may result in cracking of the WWTP bottom or damage to the partition walls In such a case sludge is not extracted nether form the activation tank or from the secondary tank WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 24 28 7 8 Sludge removal before putting of the WWTP out of service When interrupting the operation of the WWTP for a longer period of time i e ca 3 months with not pollution inlet i e inlet to the activation tank it is necessary to extract sludge from the WWTP before its closing down Unlike the
20. T WASA SUBMISSION Page 11 28 64 Identification of the plant The plant is provided with a production label located on the upper edge on the internal part of the inlet shaft to the inlet chamber the WWTP primary part The label is accessible when the plant lid is open ASIO spol s r o 56 1 627 00 BRNO CZ Tel 548210012 6 5 Installation and start up of the plant The plant should be handed over to the user after a professional installation performed in line with the design documentation and the Designing and installation instructions for the WWTP AS VARIOcomp N Following the installation the company ASIO spol s r o or its authorized representative will commission the plant and will hand it over to the user The phasing in will include training of the future operators that is why the presence of the future operators is necessary during the hand over procedure eventually it is necessary to render training additionally after ordering against payment Phasing in and training of the operators will be documented in writing in the Installation and hand over protoco This document is also required by the Water Authority for the final plant approval Do not operate the plant if it has not been phased in and the operators trained as documented in the Installation and hand over protocol The following documentation will be handed over along with the plant certificate of warranty protocol on the pl
21. WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 23 28 7 5 Putting of the WWTP into operation The covers are opened manually The covers are secured against unauthorized opening by a pad lock After unlocking the pad lock the cover can be opened around hinges using a handle The opened cover must be secured in this position against spontaneous closing using a strutting bar part of each cover WARNING The opened cover of the WWTP must also be safeguarded by the strutting bar When putting the plant into operation when the WWTP is evenly filled up with water which is carried out by a supplier or an authorised service organisation the WWTP is kept in permanent operation and it is possible to start introducing wastewater The period before the plant reaches its full treatment efficiency provided that the hydraulic and BOD loading is as per the design is ca 4 8 weeks or less in case activated seeding sludge is used WARNING In order to ensure proper operation the WWTP must be kept in permanent operation i e it is not possible to leave it disconnected beyond the absolutely necessary period for example for repair work cleaning etc 7 6 Putting of the WWTP out of operation Disconnecting of the WWTP is performed by means of circuit breakers installed in the switch board 77 Sludge removal Sludge is removed as necessary once the sludge storage spaces are filled up and as allowed by the possibilities of sludge removal and disposal
22. age 6 28 As per Attached drawings WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 7 28 Calculation note The EMA standards are equivalent to international standard The VARIO COMP system was designed to treat the water following the international requirement The goal of this calculation is to demonstrate that we are strictly below the capacity of the water treatment tank meaning that the final effluent will be correctly treated Affluents data Volume Q24 7 5m3 d Qd 0 46m3 h Qh 3 08m3 h 0 861 5 Weight Waste water pollutants BOD 3 0 kg d COD 6 0 kg d SS 2 75 kg d N tot 0 55 kg d Ptot 0 125 kg d Primary sedimentation and desludging Mirror surface 2 96m Superficial charge qv 0 16 lt 1 0m h qm 1 04 lt 5 0 m h Hydraulic journey time Vps 4 02m3 8 722 0h Th 1 32 0 5h Sludge production 751 2 25m3 month Activation tank Because the journey is longer than 2 hours in the sedimentation compartment the concentration decreased to 40g EH d gt BX 0 10kg kg d Clarifier tank Reduction of the hydraulic charge due to the size of the accumulation tank q 0 45 lt 1 2 m h Reduction of the pollution due to the size of the accumulation tank q 1 8 lt Skg m h WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 8 28 VII Chlorination In order to achieve the 400mg of faecal coliforms per liters of water The final effluent will be mixed
23. ant tank water tightness test e draft operating rules and operation manual log book e blower operating instructions You are kindly asked to check whether the type and production number of the plant complies with the data in the provided technical documentation and the proposed type of the plant according to the design documentation If the plant is not phased in according to the manner do not operate the plant and contact ASIO spol s r o i WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 12 28 After settling and concreting of the plant tank the plant tank is filled in all spaces with water up to the maximal level The electrical switchboard delivered together with the plant is fixed on the wall and connected with using a feeding cable another cable is used for interconnection of the plant and the blower The blower delivered plastic box is placed a vicinity of the plant tank reducing of pressure losses in the piping The cable passage to the blower casing must be waterproof Electrical connection inside the switchboard and blower terminal will be executed by serviceman during putting the plant into operation The air pipe connection between the blower and air distributor positioned in the plant tank above the water level in the final sedimentation tank will be also be executed by serviceman during putting the plant into operation if
24. ation and removal of excess sludge Secondary tank A mixture of treated water and activated sludge is conveyed by gravity to the secondary tank The secondary sludge is designed to separate and partially thicken biological sludge originating in the biological wastewater treatment process and to reduce as much as possible the concentrations of suspended solids in the effluent The mammoth pumps in the secondary tank ensure extraction of excess sludge to the sludge tank The second pump ensures internal sludge recirculation between the secondary tank and the activation tank Sludge tank The sludge tank is integrated in a structure which also houses the primary tank and it is used to store excess sludge originating from the WWTP operation along with primary sludge The sludge is anaerobically stabilized WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 22 28 7 4 Control of the mechanical equipment The mechanical equipment is controlled from the switch board The drawing showing the controlling and signaling switch board elements can be found in the switch board Controlling of the WWTP operation consists in switching on and off of the relevant circuit breakers of the blower The interval of the blower operation is controlled using an electronic time switch Oxygen supply from the blower is ensured by an air distributor with a manual control of the individual oxygen inlets to the equipment The electronic time switch is set when commissio
25. board Based on the actual situation and characteristics of the given type wastewater and the WWTP operation it is possible to adjust the setting so as to make it correspond to the specific type of wastewater This means that the duration and frequency of aerating the aeration tanks can be set and thus the volume of return sludge can be adjusted within the internal recirculation It is also possible to set the volume of excess sludge withdrawn to the sludge tank Blowers Blowers ensuring oxygen supply type power input according size of wastewater treatment plants WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 21 28 7 3 Description of the process Mechanical treatment The mechanical treatment stage at the WWTP includes a primary sedimentation tank where suspended solids are separated by gravity from the wastewater One part is separated by sedimentation another part is separated by flotation and settles at the bottom Mechanically treated water is conveyed over a scum board to the biological stage Biological treatment The biological stage of the WWTP includes an activation tank with a low sludge loading enabling removal of carbonaceous pollution and nitrification This tank is equipped with fine bubble aeration elements ASEKO ensuring transfer of the required quantity of oxygen This pressurised air is supplied by a blower which also supplies air to the mammoth pumps in the secondary tanks in order to enable return sludge recircul
26. description in Article 4 7 the sludge must also be extracted from the activation and secondary tanks The WWTP is switched off before extracting sludge from the activation and the secondary tanks so that the sludge can settle at the bottom of the activation After ca 3 4 hour it is possible to extract the settled sludge front the bottom of the activation and secondary tanks by means of a gully sucker ATTENTION when emptying and filling the wastewater treatment plant i e its parts it is necessary to ensure the same wastewater level in each of the parts DANGER OF DAMAGING THE PARTITION WALLS The maximum difference in levels is 30 cm 7 9 X Operators activities The WWTP does not require permanent attendance When putting the WWTP into service this plant operates in the automatic mode and it is only necessary to perform such activities in regular intervals that are targeted at checking of the WWTP operation and the treatment process parameters WARNING During any handling of the blower or other parts of the aeration system the WWTP must be disconnected from the power supply by means of the circuit breakers and residual current device and the WWTP must be kept without voltage locking of the switch board warning plates During any handling of the blower or other parts of the aeration system the WWTP must be out of operation WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 25 28 The scope and intervals of the activities are sho
27. e authorized representatives of the company ASIO s r o according to the list on www ASIO cz Brno 20 6 2006 WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 20 28 7 INSTALLATION OF WASTE WATER TREATMENT PLANT 71 Introduction These operating instructions serve as a manual for the operation of the wastewater treatment plant The instructions do not deal with professional control of the WWTP operation by a person authorised to conduct these activities 7 2 Parts Tank The external side of the WWTP tanks is made of wall polypropylene elements SP 80 All internal partition walls and built in parts are made of plastic materials polypropylene SP 80 KD 20 or Polypropylene The tanks are encased in concrete If they are designed as self supporting they must be internally supported When installing the tank on site it is necessary to consider the local conditions and if needed make further static securing The tank is not sized to potential additional pressure loading by passing truck wheels foundations etc Mechanical technological equipment The mechanical technological equipment of the WWTP consists of a source of pressurised air blower fine bubble aeration system el switchboard and a system of mammoth pumps extracting excess and return sludge Wiring system Main feeding cable leading the WWTP switchboard CYKY 5C x 4 mm The blower is automatically controlled using a time switch installed at the switch
28. escribe types and sources and provide an estimated emission rate or loading 21 Will the activity routinely produce odours i e for more than 1 hour per day Y N XJ 22 Will the activity generate significant levels of noise i e for more than 1 hour per day at levels exceeding 60 dB during its operational phase Y N L 23 Will the project have adverse effects on the aesthetics of the area where it is located i e result in radical changes of the landscape such as scarring mass vegetation removal YL 24 State mitigation measures for adverse impacts resulting during the operational phase No significant adverse impacts are anticipated 24 State the expected lifespan of this activity Duration of the construction site will be 9 months C CONFIDENTIALITY 26 a Do you consider any information provided here to be a trade secret or other confidential business information and that such information be omitted from the Register YJ NK b Give details 27 Other relevant information 28 Please list anv attachments included in the application Attachment 1 Waste Water Treatment Plant WASA Submission Attachment 2 Project Description and Drawings ATTACHMENT 1 WASTE WATER TREATMENT PLANT WASA SUBMISSION WASTE WATER TREATMENT PLANT WASA SUBMISSION 1 INTRODUCTION 2 REQUIREMENTS 3 PLANS 4 PICTURES 5 LOCATIONS 6 OPERATING MANUAL 6 1 6 2 6 3 6 4 6 5 6 6 6
29. ess water consumption rate m day NONE __ Project s intended operating capacity metric tons per annum NOT Applicable_ f Production output rate if different from above metric tons per annum NOT Applicable g Intended commencement date 26 06 2010 2 Site Preparation and Construction Phase 13 Does the project site require major earthworks such as clearing X cutting X excavation DX grading X blasting _ dredging _ If yes state the method of disposal and disposal site of material generated as a result soil would be hauled away by truck to approved disposal sites and managed to prevent the runoff to waterways All truck hauling would be done during off peak hours a Does the site require filling reclamation coastline stabilisation alteration 2 NO If yes state the source and quantity metric tons of material required b Would the project require major waterworks such as abstraction diversion of water courses _ creation of standing water bodies NO If yes give an estimate of the volume of water to be impounded m or the rate of abstraction m day and the source of this water M M M Would the site require infrastructure and utility development access roads and or bridges _ power generating or transmission facilities DS telecommunications X installation or modification of a drainage system Dx
30. ing E P NY l E E MORUGA POLICE STATION E TRINIDAD amp TABAGO E POLICE STATIONS PROJECT E
31. iour above all in the field of use and discharging of chemical agents BEWARE OF disinfecting agents disinfecting agents for sanitary hygiene must be used with utmost care They kill viruses and bacteria in the household but they also reliable kill bacteria in the plant which ensure the treatment process BEWARE OF inadequately frequent laundry washing The quality of the treatment process in the plant is adversely affected by inadequately high quantities of detergents and tensides during laundry washing several washing cycles in a series in a short time interval Distribute the big laundry in time over several days BEWARE OF oils and grease Besides chemical agents animal grease and vegetable oils in high quantities are dangerous to proper functioning of the plant Their decomposing strongly acidifies wastewater and thus creates adverse environment for the plant biology BEWARE OF discharging of water from a pool Discharging of high quantities of clean water via the plant e g from a pool or rain water storage usually results washing of microorganisms out of the plant which disables further operation of the plant The pool water has adverse effects due to its chemical composition chlorinating and stabilizing agents o WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 14 28 6 6 Maintenance Proper
32. ll contain approximately 834 square meters of office and dormitory space 10 Site Description physical setting of the proposal both developed and undeveloped areas Givc an outline description of the physical features of the site to include information on a Topography and gradient i e generally flat rolling undulating terrain or hilly DX b Are there any springs or aquifers in or adjacent to the site c Are there any rivers streams or drainage within or adjacent to the project site Y d Are there any ponds reservoirs or wetland areas within or contiguous to the project site YL NP e What is the predominant soil type Clay based X _ Loam _ Alluvial f Is the project located within 5km from the coast X or further inland g Present site land use Residential Agricultural Commercial X Industrial Forestry 11 Estimated project capital TT dollars 10 million l en million Trinidad and Tobago Dollars M Pr r n DESCRIPTION OF INTENDED ACTIVITY 12 Description of the Intended Activity which must include information on a Total area intended for the activity ha or m 1704 6 m b Percentage of the total surface area allocated to covered space and paved areas 74 c Potable water consumption rate m day approximately 28 cub metres day d Proc
33. m probably signalizes a higher content of detergents in the inflow waste water there are presented in cleaning agents The air input from air distributor to the aerator is led through the ball valve and drain valve which removes water that penetrated to the aerator from the tank or which condensated from the inlet air Water presence in the aerator decreases its performance and therefore it is necessary to dewater aeration system manually during the regular system checks WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 16 28 Mammoth pumps function There are mammoth pumps installed in the plant for extracting of return sludge from the sedimentation tank back to the activation and for securing of circulation of the excess sludge from the activation to the sludge space Mammoth pump of return sludge is designed so that to separate air used for the sludge liquor pumping and use its overpressure again as a drive of further mammoth pump for controlled discharge of pre treated water from the plant Mammoth pump for return sludge sludge liquor stock inlet to the mammoth pump tube is the air trap to which the air is led close on the sedimentation tank bottom with use of perforated pipe The mammoth pump pipes must be airtight and its inlet point at the activation tank must be under water level in depth which is bigger than depth of air inlet to the mammoth pump for controlled discharge of the pre treated water from the plant Controlling of this
34. ning the WWTP or during a service inspection carried out by the supplier or the authorised service organisation to a standard mode which can be adjusted based on the specific operating conditions by changing the time intervals A separate detailed description of the electronic time switch is presented in the enclosed manual The supplier or the authorised service organisation has trained the operators so that they are able to adjust the time intervals in the wastewater treatment process The instruction to change the time mode for the individual pieces of equipment will be issued by a professional authorised to operate the WWTP or the supplier of the WWTP on the basis of relevant observations and laboratory tests If necessary the blower run control may be switched over from the automatic mode to manual mode For this purpose the digital time switch is equipped with a key The manual mode can be switched over to the automatic mode using the same key The blower is switched off by means of the relevant circuit breakers WARNING During operation the WWTP must be operated in the automatic mode controlled by the time switch i e the operation of the electronic time switch must not be blocked In case the red light failure signalling is on such failure signals switching off of the blower motor circuit breaker The operator must restart the circuit breaker In case the circuit breaker switches off again this signals damaging of the bower
35. not agreed otherwise This connecting pipes must laid a shortest possible distance without sharp bents the pipe profiles can differ on the basis of the delivered blower type and size mostly often 3 4 and the profiles must not be reduced to smaller diameters In case that electrical device blower is connected to the three phase system it is necessary to check the proper direction of the motor revolution in case of a wrong adjustment the blower is working as a vacuum pump and when the water is sucked in the blower is destroyed this defect is not covered by the guarantee There is no standard protection against the wrong phasing in the switchboard so it is necessary when any of repair or work in the electrical system to recheck the proper motor revolutions direction which must be executed at a loosened screw connection at the delivery conduit located behind the blower Following activities e putting the blower into operation activation begins fine bubbles aeration timer setting blower operating time e visual check of the piping completion and their tightness air inlet valves adjustment for the input to the mammoth pumps for sludge recirculation and the outlet of cleared water from the sedimentation tank e air inlet to the mammoth pump for excess sludge pumping out to be checked and the valve should kept closed e Todemonstrate plant function and operation to the person to operate the plant attendants training
36. not handle the WWTP or any of its parts unless such activities do not result from these instructions or the operating rules when performing work when direct contact with wastewater or sludge cannot be prevented from it is necessary to take all measures to limit the contact with wastewater and sludge and to use protective aids If necessary the equipment must be sprayed by pressurized water wastewater may be a source of various illnesses Therefore it is necessary to protect oneself against direct contact with wastewater When performing maintenance work it is forbidden to eat drink and smoke After completion of work the operator must was his hands by soap and hot water as a minimum the operator must be vaccinates against tetanus as a minimum The WWTP must be secured against access by unauthorized persons above all against access to the tank covers WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 27 28 THE OPERATORS ARE FORBIDDEN TO perform work that is contrary to the directions given in these operating instructions generally valid safety precautions and the operating rules consumption of alcoholic beverages and medicines before commencement of work reduces the operator s attention enter the inner spaces of the WWTP and the WWTP cover perform any work at the WWTP without proper securing of the lid by the strutting bar Personal protective aids When operating the WWTP the following personal p
37. operation and maintenance of the plant requires the following tools ladle on stick e brush on a handle for wall and effluent trough cleaning e brush on a handle for pipe cleaning mammoth pump graduated 1000 ml cylinder or Imhoff cylinder 3 of polyethylene bottles with a volume of 1000 ml for sample taking 4 vi KI ex 4 WAN i bo rn ay 1 Check of the blower function Check whether the blower is on whether the noise level did not increase significantly or whether there are any signs of defect In case of doubt about the proper functioning follow the instructions for the blower use or contract an authorized service centre or directly ASIO spol s r o If the blower is not in operation outside the programmed time of switching off the plant is not functional Visual check The regular visual check is a primary condition for successful operation of the plant After opening the lid check Function of activation aerating e Function of the mammoth pumps e Condition of effluent trough and pipe e levelin the sedimentation tank Sludge colouring in the activation possibly foaming on the activation surface Overall condition WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 15 28 Function of activation aeration At the bottom of the activation tank there are diffusers aeration elements their number is according to the
38. re its safe and trouble free operation The safe and trouble free operation of the plant is based on following of all instructions and precautions presented in this manual Damage caused by inappropriate handling improper use or wrong attendance during the guarantee period cannot result in claims for a charge free guarantee repair 6 3 Principles of safe use of the plant Operation and maintenance of the plant may be executed by people more than 18 years old who are physically as well as mentally competence to exercise such work and who have been duly familiarized with the manual Installation of the plant may only be performed by people and companies with corresponding experience and qualifications to perform construction work and installation of technical facilities which are familiar with design and installation documentation provided by producer WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 10 28 Service work may only be performed by the company ASIO spol s r o or a company trained and authorized by Asio hereunder the authorised representative lt aperea P ____________ ______ __ i Intervention in the electric parts of the blowers may only be performed by people with corresponding electro technical qualifications and only in a scope defined in the blower operating instructions Wastewater at the plant may be source of various disea
39. reas l oundwater NIAA 6 9 10 C o 9 2 ys lt 24 eo 4 e 2162 22 ae gt Ale 2 5 9 100 42 day Biologia i BOD MEC 250 250 60 150 200 Total Cal and Grease TC amp C1 er 100 No discharge Hexane Exmacralis X faternal HEM Q C s NIAA NIAA Comoe as 0 95 0 2 heyy Penoletun Hs drocarbons No discharge 001 e e lt lt 2 lt 2 gt Ss c iv 2 V c 21 591 21 0 002 ae Lead PL 2 nw 1 2 p 0 1 100 NSD NIAA NATE 400 NSD NLAA 420 25 NSD aa litre ung L except for temperanye C pH pH wuts faecal coliforms counts 100ml 134 Le aad Gauls NIAA above NATE uc enue toxic effecti 400 NSD 4 28 WASTE WATER TREATMENT PLANT WASA SUBMISSION 3 PLANS ASIO Www cz WASTEWATER TREATMENT PLANT AS_VARIOCOMP_5ON WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 5 28 4 PICTURES e vn V gei abt iu AER iar NE ee ne Pages m 4 r Y 4 PW WASTE WATER TREATMENT PLANT WASA SUBMISSION P
40. rotective aids must be used working clothes boots protective rubber gloves Working aids When operating the WWTP the following working aids must be used ladle with a long handle Sludge gauge polyethylene bottles for samples 1 liter 3 pcs brush attached to a handle for cleaning of walls and the effluent trough bar with length of 2m graduated 1 liter cylinder or Imhoff cone Note the tolls above are not part of the delivery they can be ordered from the supplier 12 SPARE PARTS AND SERVICE Spare parts can be ordered at the supplier ASIO spol s Tufanka 1 P O BOX 56 627 00 BRNO tel 548 428 111 548 428 100 or in an authorised service centre OVtQ WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 28 28 8 LIMITS APPLICABLE TO WASTEWATER CONVEYED TO THE WWTP Based on CSN 75 6402 wastewater conveyed to the WWTP must meet the following composition and concentrations COD up to 800 mg l up to 400 mg l to 70 mg l P up to 15 mg l pH from 6 5 to 8 5 The BOD COD ration is usually 2 the ratio of Norg BODs is usually lower than 0 25 It is not allowed to bring such wastewater to the plant that contains substances that fail to meet any of these concentrations or whose concentrations have a negative impact on the wastewater treatment sludge processing and wastewater with concentrated infection wastewater containing impermissible concentrations of subs
41. ses Therefore you should prevent from a direct contact with water and sludge at the plant When performing work requiring opening of the plant it is necessary to use Suitable work clothes rubber gloves and follow carefully the general sanitary principles ee M eee Q Do not drink eat or smoke when doing work before opening the plant o e 45 with water after use used work clothes gloves tools and aids must be stored Tools and aids that get in touch with wastewater or sludge must be carefully washed proper place Wash your hands carefully with soap and warm water as a minimum during work The plant tank is an underground structure with a risk of falling in when the lid is removed 2 AN Be particularly careful when the plant is open Do not leave the plant open unattended The closed lid should always be locked ee lt M In case of extraordinary events it is necessary to follow generally applicable safety precautions and regulations related to entering into underground structures In case of need there will be warnings against any other dangers mentioned in the specific parts of this manual WASTE WATER TREATMENT PLAN
42. sludge analyses in order to prevent from potential breakdown of the biological stage at the WWTP Cleaning of outlet holes connecting pipes Cleaning of the outlet holes connecting pipes is performed using a brush and a scraper that can be supplied together with the WWTP Removal of floating sludge scum from the surface of the secondary tank Floating sludge is extracted from the surface of the secondary tank by means of a collecting strainer Measurement of the sludge level in the sludge storage space The sludge level is measured by a sludge gauge When slow submerging of the gauge a change in the resistance is felt which means that the border between water sludge was reached In this case submerging of the gauge represents the water level above sludge The minimum water level above sludge at a sludge depth of 1 0m is 1 1 Sample taking and sample analyzing This activity must be performed on the basis of instructions set in the valid decision of the water authority As a standard samples of treated wastewater are taken in the first sewerage inspection behind the wastewater treatment plant When operating the WWTP above all during breakdown situations or when putting the plant into operation and setting of the treatment parameters it is advisable to take samples of sludge at the inlet of the WWTP and samples of activated sludge from the activation tank this is performed by an authorized and professionally skilled person
43. tances that are aggressive radioactive disturbing the structures of buildings and technical equipment of the WWTP and flammable or combustible substances Infiltration is also undesirable It is not allowed to discharge such substances to the sewerage that can greatly increase the volume in contact with water and objects that can damage the WWTP equipment e g condoms sanitary towels etc Please find below the basic overview of the maximum concentrations of substances that can be discharged to the sewerage system mg l SS 300 BOD 400 COD 800 N 70 15 surfactants 6 oil products 10 phenol substances 5 mercury 0 0015 copper 0 3 nickel 0 1 chromium 111 0 3 chromium VI 0 1 lead 0 1 arsenic 0 02 zinc 1 0 molybdenum 0 01 selenium U 5 cadmium 0 003 silver 0 1 cyanide ions 0 2 soluble inorganic soils 1000 oils and grease vegetable and animal oil 40 N NH4 25 Ninon 50 temperature up to 40 C pH 6 5 8 5 ATTACHMENT 2 PROJECT DESCRIPTION AND DRAWINGS 1 PROJECT DESCRIPTION he project consists on the construction of the 3 levels storey building E The building is designated to receive the new police station of Moruga The building will have prefabricated modular steel structure erected shallow foundation The structure will have hollow concrete blocks as envelope and walls I he roof will be done in light metal roofing system I PROJECT DRAWINGS e Please find below the list
44. timum Low concentration of activated sludge Volume of settled sludge is less than 1 3 of the total volume which means that there are no enough microorganisms in the activation and no sludge needs to be extracted from the activation High concentration of activated sludge Volume of settled sludge is us more than 1 2 of the total volume which means that there is excess of micro organisms in the activation and the sludge volume must be reduced by de sludging using mammoth pump of excess sludge into the sludge zone Activated sludge has not been formed There is no border between water and sludge which means that activated sludge has not been formed yet thus is possible during the phasing in of the WWTP for a period of approx 8 weeks or disappeared for some reason e g single discharging of a greater volume of detergents into the sewerage to which the plant is connected In all cases wait approx a week whether the situation starts improving the concentration will be progressively increasing If it is not the case it is necessary to contact ASIO spol s r o or its authorized representative WASTE WATER TREATMENT PLANT WASA SUBMISSION Page 19 28 Activated sludge did not settle after 30 min There is no border between water and sludge sludge is dispersed in the whole volume of the cone The sludge is young too fine with low settling capacity This situation will improve with time after the plant has been fully phased in
45. wn in the table below Type of activity SOS Interval of activities Visual check of the WWTP operation __ Once a day Cleaning of outlet holes connecting pipes As required based on the result of visual check Extraction of floating sludge from the surface of As required based on the results of the visual the secondary tank check in case of occurrence of floating sludge spontaneous sludge extraction Measurement of sludge level in the sludge One a month storage space NEN Sludge removal Sample taking and ensuring of sample analyses As required according to the decision of the water authority It is necessary to check whether the outlet holes and the connecting pipes between the technical spaces not clogged The space of the inlet part is accessible after removing a lid covering this space It is also necessary to monitor the color and the appearance of the activated sludge and whether there is no occurrence of floating sludge on the surface of the secondary tank and extract it if needed It is also necessary to check the operation of the equipment which is light signaled on the switch board and it is also important to check the sound of the blower when it is put into service on the switch board When there is a major change in the appearance or the sludge color e g blackening yellowing etc it is necessary to immediately approach a skilled operator who will make potential investigation and take samples or activated
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