Operation & Maintenance Including User Guide
Contents
1. wpL Operation amp Maintenance D Including User Guide Diamond Sewage Treatment DMS and DMS IPC DMC Please note WPL Offers clear instructions on using and maintaining its treatment plants Consent holders and or treatment plant users are responsible for correctly operating and maintaining their plant as per the manufacturer s instructions Sewage Treatment Plants SSE Environmental Wastewater Solutions i www wpl co uk Thank you for choosing the WPL Limited Diamond domestic wastewater treatment system SERVICING AND MAINTENANCE Since April 2010 the Environment Agency Environmental Permitting Programme EPP2 requires that all sewage treatment plants are operated and maintained in accordance with the manufacturer s instructions and that the maintenance log is recorded and retained for at least 5 years under the Environmental Permitting Programme EPP2 In order to sustain the high performance of your Diamond plant this User Guide Operation amp Maintenance Manual sets out the required periodic maintenance and operating instructions WPL supplies a separate Maintenance Log Book with each Diamond which is designed to record the regular six monthly maintenance cycle for your sewage treatment plant The WPL Diamond has been designed for simple tank and blower maintenance and WPL Ltd recommends this maintenance is carried out by a British Water Accredited Qualified Service Engineer It is also important that2. Never use a Water Softener with a Diamond plant If the use of a Water Softener is present in the property then it is advised that the Water Softener is disconnected The use of a Magnetic or Electric Scale Reducer may be an alternative to a Water Softener as long as it does not use salt or chemicals but homeowners are advised to seek the advice of a specialist SURFACE RUN OFF STORMWATER The Diamond plant should never be connected to guttering and drainage collecting stormwater and or surface water run off from hard standings and surfaces ADVICE Surface stormwater should always be discharged to a storm drain which is excluded from the wastewater stream from the property LAUNDRY The Diamond plant should have been sized taking into account the actual laundry carried out at the property as the laundry detergents chemicals effect the performance of the plant ADVICE Changes to the amount of laundry or the type number of washing machines in use may affect the performance of the plant Contact WPL for advice if there are any changes planned SWIMMING POOLS HOT TUBS The Diamond plant should never be connected to swimming pools hot tubs etc as they will contain chlorine which will significantly reduce the performance of the plant ADVICE Consider separate treatment or disposal of backwash waters from ancillary equipment such as types or filtration and disinfectant removal in pools and hot tubs GREASE FROM KITCHENS The Diamond plant shoul
3. auto stopper has activated not power failure 3 2 2 Quarterly If required by prevailing temperature dust and humidity conditions Check air blower filter cleanliness and clean or replace the filter as necessary Air blower instructions are supplied in the air blower packaging 3 2 3 Six Monthly The air blower DMC blades and kiosk aeration chamber air diffuser system clarifying chamber integral pump chamber depending on model outlet weir and sample chamber if applicable all need to be checked and maintained as necessary 10 3 MAINTENANCE continued 3 3 Air Blower Information 3 3 1 DMS DMS 1Pc Models Each DMS system is supplied with a linear air blower covered by a comprehensive 24 month warranty subject to the correct maintenance procedures being adhered to see section 5 4 page 12 for warranty limitations Each DMS system blower must be maintained in accordance with the Manufacturer s instructions Please refer to the specific instruction manual supplied in the air blower packaging and the WPL Maintenance Log Book Service kits spares can be obtained from WPL Limited on 023 9224 2600 Please note DMS Air blowers should only be allowed to draw in clean uncontaminated ambient air Intake filter shall be inspected cleaned or replaced every 6 months Installation of a service kit New valve boxes diaphragms filter element every 18 months Operating pressure shall not be more than 200mbar Ambient air tempera
4. contents are grey brown to black Slight to strong septic odour Effluent quality is poor and is grey Air blower is running and good turbulence is evident 5 Aeration chamber has a clear appearance with very few suspended solids lt 5 White suds observed Effluent is clear with no odour 6 Aeration chamber as 5 but with very fine particles in the effluent causing it to appear turbid or murky 7 Aeration chamber contents have a grey appearance and slightly septic odour B CAUSE 1 Blocked air diffuser 2 Blocked air hose or pipe 3 Leaking hose or pipe joints 4 Kinked crushed or split air hose or pipe 5 Excessively worn carbon vanes in Rotary Vaned Air Pump DMC only 6 As B 1 4 7 As B 1 4 8 Heavy hydraulic surge flows from laundry or kitchen activities 9 Light loading resulting in total digestion of solids 10 See B 8 11 System is lightly loaded and has been in use for less than 3 months 12 Insufficient organic matter present in the influent resulting in a slow start up 13 See B 8 C REMEDIAL ACTION 1 Disconnect air pipe at the union and clean or replace air diffuser 2 Inspect hose and pipe for blockages especially at joints Unblock as necessary 3 Inspect all hose and pipe joints and tighten as necessary 4 Inspect and replace as necessary 5 See specific air blower manual 7 As C 1 5 8 For commercial ap
5. wastewater sludge from the sewage treatment plant is safely disposed of in an appropriate or controlled manner at the recommended intervals De sludging MUST be carried out by an approved tankering company and WPL recommends that de sludging is arranged with a reputable company in your area We recommend that you keep this manual along with your log book in a safe place on the premises where the Diamond is installed for easy reference Replacement Maintenance Log Books and User Guide Operation and Maintenance Manuals are available by calling WPL Limited on 023 9224 2600 WPL LIMITED SPARE PARTS Please contact the WPL Spares Department on 023 9224 2600 for prices and information The Diamond is CE marked fully type tested and certificated in accordance with the mandatory European standard BS EN12566 3 and meets all current legislation under the Environmental Permitting Programme WPL Diamond is also LABC registered INDEX 1 GETTING THE BEST FROM YOUR DIAMOND 1 1 Important information 1 2 Hints and Tips 1 3 Recommendations 1 4 Letting Visitors Know HOW THE DIAMOND WORKS Operating Conditions Inside the Diamond Plant The Treatment Process Schematic Diagram 3 MAINTENANCE 3 1 Health amp Safety 3 1 1 Warning 3 1 2 Dangerous Gases 3 2 Routine Maintenance 3 2 1 Weekly 3 2 2 Quarterly 3 2 3 Six Monthly 3 3 Air Blower Information 3 3 1 For DMS DMS iPc Models 3 3 2 For DMC Models De sludging 3 4 1 De sludging
6. Frequency 3 4 2 Determining De sludging Frequency 3 4 3 Procedure for De sludging 3 4 4 Approximate De sludging Volumes 4 TROUBLE SHOOTING AND PROBLEM SOLVING 4 1 DMS DMC Models 4 2 DMS iPc Models 5 GUARANTEE AND WARRANTY INFORMATION Process Guarantee Warranty Period Parts Covered Under Warranty Warranty Limitations Exemptions Chargeable Non Warranty Work 1 GETTING THE BEST FROM YOUR DIAMOND 1 1 Important Information The following key points should have been taken into consideration when the plant was specified and sized using the latest version of the British Water Flows and Loads To maintain efficient performance of the Diamond plant the following should be noted and also considered if there are any changes to the property in the future WASTE DISPOSAL UNITS WDU The Diamond plant should have been sized taking into account the use of a WDU in the property if there is one installed as it increases biological loading ADVICE It is advisable to limit the use of the WDU to ensure the plant operates efficiently Raw or uncooked foods should not be put through the WDU and ideally disposed of in a composter If the use of a WDU was not included in the sizing of the plant then it is advised that the WDU is not used or installed subsequently in the property WATER SOFTENERS The Diamond plant should never be connected to a property using a water softener as the salt will significantly reduce the performance of the plant ADVICE
7. d be protected from grease and fats if installed in a property or commercial premises where catering is provided ADVICE All commercial catering applications require the installation of adequately sized grease separators removal or retention systems up stream of the Diamond plant and it is advisable to check that this provision has been made prior to installing the Diamond plant CONDENSING BOILERS Discharge from condensing boilers ADVICE Should ideally be connected to a soakaway if possible 1 GETTING THE BEST FROM YOUR DIAMOND continued 1 2 Hints and Tips The Diamond requires minimal servicing provided it is installed as per the instructions in the WPL Ltd Installation Manual and is used and maintained properly as set out in this User Guide Operation and Maintenance Manual Regular but simple maintenance will keep the system running efficiently and will reduce the number and cost of unnecessary service call outs DO v Ensure all servicing is carried out by a British Water Accredited Qualified Service Engineer v Make sure the air blower is installed in a dry well ventilated area If it is situated outside ensure it is installed in the approved weatherproof housing supplied with the Diamond v Check the access lid is properly and securely fastened at all times v Make sure the electrical supply is maintained at all times v Regularly check to make sure the air blower is operating you should be able to hear it run
8. e bottom of the clarifier 2 3 The Treatment Process Air is released at the bottom of the draft tube through a disc plate diffuser and as the diffused air rises in the draft tube it causes an upward flow of process fluid This draws the settled solids from the bottom of the clarifier up through the draft tube where they are discharged at the surface of the aeration chamber The design of the draft tube ensures continuous and complete mixing of oxygen with the sewage allowing for the growth of various aerobic organisms that biologically degrade the wastewater contaminants Gravity causes the aerated solids to settle back to the bottom of the tank where they are again drawn back up through the draft tube As raw sewage enters the aeration chamber it displaces biological solids from the aeration chamber to the clarifier Quiescent conditions in the clarifier allow the digested solids to settle to the bottom of the clarifier where they are again returned back to the aeration compartment The clarified treated effluent flows slowly up through the clarifier and over a weir that extends around the periphery of the tank The effluent collects in an outer trough where it discharges through a 110mm pipe connection A scum baffle located inside the overflow weir prevents floating solids from passing over the weir 8 2 HOW THE DIAMOND WORKS continued 2 4 Schematic diagram 33 Scum Baffle Fluid Circulation Aeration Chamber Clari
9. fier Chamber Draft Tube Air Diffuser Settled Solids The diagram opposite shows the exploded section for Diamond DMS iPc models which have an integral pump chamber Float Switch Scum Baffle Weir Pump Chamber Pump 3 MAINTENANCE 3 1 Health and Safety 3 1 1 Health Warning There are significant Health and Safety risks associated with the servicing and maintenance of any sewage treatment plant WPL Ltd recommends that servicing and maintenance is carried out by British Water Accredited Qualified Service Engineers Please contact WPL Ltd on 023 9224 2600 for any further Health and Safety advice 3 1 2 Dangerous Gases Sewage gases are potentially explosive and toxic DO NOT enter any of the below ground compartments of the Diamond sewage treatment plant 3 2 Routine Maintenance The Diamond plant requires routine periodic inspection and maintenance to ensure continuous trouble free operation At a minimum the Diamond should be inspected every six months see separate log book for details by a British Water Accredited Qualified Service Engineer More frequent inspections may be required if mandated by local or stated regulatory authorities or if the Diamond is used on a non residential application 3 2 1 Weekly Check that the air blower is operational The motor should be running which you can hear externally and the air failure beacon should NOT be flashing The beacon indicates that the air pump
10. ing 3 4 2 Determining De sludging Frequency This should be provided by a British Water Accredited Qualified Service Engineer who will check the percentage of settled sludge i e sludge volume to the clear liquor The optimum level of solid settlement is normally between 5 50 Whenever the sludge volume reaches 70 the plant should be de sludged 3 4 3 Procedure for De sludging the Diamond De sludging MUST be carried out by an approved tankering company WPL recommends that de sludging is arranged with a reputable company in your area When de sludging is carried out approximately one third of the volume of sludge should remain in the plant 3 4 4 Approximate De Sludge Volumes This table is a guide only The amount of sludge accumulated depends on the loading of the plant Each site has its PMs 2100 own characteristics DMS4 2650 DMS5 2650 DMC6 6000 DMC7 6000 DMC8 10000 DMC9 10000 MODEL App De sludge Volumes Itrs DMS2 1500 4 TROUBLESHOOTING AND PROBLEM SOLVING 4 1 DMS DMC Models A SYMPTOM 1 Air blower is running but little or no turbulence is observed in aeration chamber This could be due to insufficient air supply to the aeration chamber caused by one or more of the reasons opposite 2 Aeration chamber contents have a greyish dishwater appearance 3 Noticeable odour amp poor effluent quality 4 Aeration chamber
11. ll WPL Ltd be liable for loss incurred because of interruption of service or for consequential damages labour or expense required to repair defective units nor shall this constitute a cause for the cancellation of the contract of purchase and sale Specifically exempt from this warranty are limited life consumable components subject to normal wear and tear such as air pump vanes diaphragms and filters 5 5 Chargeable non warranty work Service charges incurred including parts and labour due to unauthorised alteration accidental damage improper use abuse tampering failure to follow installation instructions or failure to follow operating and maintenance procedures are not covered by this warranty and are not assumed by WPL Ltd All service visits for non warranty work are chargeable This warranty gives specific additional benefits Statutory rights are unaffected 15 cE i atl WPL EEE WPL Limited Units 1 amp 2 Aston Road Waterlooville Hampshire PO7 7UX United Kingdom Tel 44 0 23 9224 2600 Fax 44 0 23 9224 2624 email enquiries wpl co uk www wpl co uk WPL has a policy of continuous product development and the information contained in this booklet may be subject to change without notice Version EJOSMAR12
12. ng term usage 20 Excessive 22 Remove scum back to gt 125mm of scum has aeration chamber with a scoop accumulated in the clarifying chamber The scum is being carried under the scum baffle 11 System requires 21 Excessive use of 23 Use liquid detergents or de sludging on a more powdered laundry concentrated powders frequent basis detergent 12 Effluent sample 22 Overabundance 24 Contact WPL for specific contains excessive of filamentous recommendations suspended solids bacteria that prevent Aeration chamber compaction contents have a normal and settling of the chocolate brown colour sludge but sludge settles slowly in a jar and forms a light floc 13 Alarm beacon flashing 23 Blower motor 25 Replace diaphragms tripped out probably cause diaphragm failure 4 2 DMS ipc Models with integral pump A SYMPTOM B CAUSE C REMEDIAL ACTION 1 No discharge 1 No flow as pump 1 Check power supply not working 2 Check operation of float 2 Beacon flashing 2 High level alarm 3 As C1 2 3 Plant overflowing 3 No power 4 Check power supply 14 5 GUARANTEE AND WARRANTY INFORMATION 5 1 Process guarantee The process is guaranteed to meet the designed Effluent Discharge Standard for the life of the plant provided that All aspects of the Installation Manual and User Guide Operation amp Main
13. ning v Arrange for regular maintenance to be carried out see section 3 in this manual and that it is recorded in the separate Maintenance Log Book provided by WPL v Arrange for the excess sludge to be tankered away at the appropriate interval DO NOT X Turn off the electricity supply X Attempt to service the system yourself if you are not qualified to do so X Use any replacement parts other than those supplied by WPL Limited X Alter or modify the system without authorisation from WPL Limited X Allow surface water to form a pool around the access lid or blower housing X Allow storm water from roofs or hard standings to enter the treatment plant 1 GETTING THE BEST FROM YOUR DIAMOND continued 1 3 Recommendations The Diamond system uses highly efficient aerobic organisms to treat the organic contaminants in domestic sewage and wastewater As the system is based on a biological process it is important to ensure that you do not put anything down the sink toilet or drains that will harm these organisms which bio degrade the sewage The way you use cleaning products and the type you use can also significantly affect the efficiency of the system WPL DOES RECOMMEND v Thinking before you put anything down the sink toilet or drains v Using the manufacturers recommended doses relevant to the hardness of your local water for household cleaning products v Using cleaning products little and often as this will allow
14. plications install a surge tank before the Diamond 9 For residential applications reduce the frequency of laundry to 1 2 loads per day 10 No action required if effluent quality is acceptable Typical of intermittent use 11 See C 8 9 12 Continue start up regime of minimal laundry and minimal cleaning chemicals 13 See C 1 5 14 Seed plant with WPL Formula 33 to help initiate start up 15 See C 10 4 TROUBLESHOOTING AND PROBLEM SOLVING continued 4 1 DMS DMC Models continued A SYMPTOM B CAUSE C REMEDIAL ACTION 8 Aeration chamber 14 Organic overload 16 Refrain from discharging contents are grey due to excessive use of food scraps grease oil etc into to black Effluent is grey waste disposal unit the waste disposal and has a strong septic odour 15 As B 1 4 17 As C 1 5 9 Grease balls are 16 Excessive laundry 18 As C 8 9 observed in the use aeration chamber contents 17 As B 1 4 19 As C 1 4 18 Insufficient 20 At the time of a peak flow Dissolved Oxygen DO turn air blower off for 15 minutes and check DO with a metre If DO is less than 1 0 part per million contact WPL for assistance 10 Effluent sample 19 Heavy build up of 21 De sludge the Diamond contains brown mixed liquor suspended solids more suspended solids noticeable MLSS due to normal during peak flow periods lo
15. tenance Manual are adhered to The flows and loads do not exceed those stated on the design sheet based on industry standard figures ref BW COP 7 09 There is sufficient hardness in the water where nitrification is required Grease from commercial kitchens is not present in the influent Performance is measured after the process has matured Biological inhibitors are not present in the influent The pH is 7 to 9 5 2 Warranty period The warranty period for Diamond DMS DMC systems is 10 years on the tank for manufacturing defects and 2 years for the air blower both from date of purchase see points 5 3 and 5 4 below 5 3 Parts covered under warranty WPL Ltd warrants all of the parts in each of their Diamond range of package sewage treatment systems when properly registered with the manufacturer to be free from defects in materials and workmanship in normal use and service WPL Ltd s sole responsibility under this warranty is limited to repairing exchanging or replacing any component part or parts that in their judgement show evidence of defects within the warranty period If you have a defective part please contact your maintenance provider The defective part or parts must be returned to WPL Limited 5 4 Warranty limitations exemptions WPL Ltd shall not be liable for any labour involved for the removal or replacement of its equipment nor the subsequent transportation handling or packaging of any part or parts thereof In no case wi
16. the bacteria to become accustomed to the brands and amounts you use v Spreading your laundry throughout the week and overnight v Sticking to the same washing dishwasher and other cleaning products as the organisms will work more efficiently with familiar products v Using liquids not powders in washing machines and dishwashers as they dissolve more easily WPL DOES NOT RECOMMEND X Putting sanitary towels tampons disposable nappies baby wipes cotton wool incontinence pads cotton buds rubber products or other non biodegradable products down the toilet X Pouring waste fat grease or cooking oil down the sink or drains X Using bleach or strong chemicals excessively or having a spring cleaning day X Having a laundry day X Emptying bottles of medicine or mouth wash down the toilet or sink X Constantly changing your brands of cleaners and washing chemicals X Using water softening agents X Pouring any garden chemicals paint or car engine oil down the drain or sink X Over using your waste disposal unit please use it sparingly 6 1 GETTING THE BEST FROM YOUR DIAMOND continued 1 4 Letting Visitors Know It is important that your family guests and visitors are made aware that your house is connected to a specialist biological sewage treatment system They need to know that they should not put anything down the toilet sinks or drains which could harm the bacteria or block the system The easiest way to tell g
17. ture should not exceed 38 C 10 The maintenance programme 3 5 years is as follows e From 36 42 months Replace filter diaphragm kit and valve box e From 48 54 months Replace filter and diaphragm kit For DMS IPC Model with Integral Pump Chamber please ensure the operation and cleanliness of the integral pump chamber is checked during servicing see log book for section on integral pump chamber maintenance 3 3 2 DMC Models Each DMC System is supplied with a rotary vaned air blower covered by a comprehensive 24 month warranty subject to the correct maintenance procedures being adhered to see section 5 4 page15 for warranty limitations Please refer to the specific instruction manual supplied in the air blower packaging Spares can be obtained from WPL Limited on 023 9224 2600 3 4 De sludging 3 4 1 De sludging Frequency The rate at which the solids biomass accumulate in the Diamond and subsequently the rate at which the excess solids must be removed is dependant upon the total volume and strength of the wastewater entering the plant 3 MAINTENANCE continued 3 4 De sludging continued 3 4 1 De sludging frequency continued Diamond DMS DMS IPC systems serving domestic residential properties typically require de sludging every 36 to 60 months Diamond DMC systems serving domestic residential properties will typically require de sludging every 12 months In some circumstances plants may need more frequent de sludg
18. uests or visitors that you have a specialist biological sewage treatment system is to put up notices in your kitchen and bathroom s You might like to copy this suggested wording WARNING This toilet is not connected to mains drainage It leads to a biological sewage amp wastewater treatment system DO NOT PUT THE FOLLOWING DOWN THE TOILET ANYTHING OTHER THAN TOILET TISSUE EXCESSIVE AMOUNTS OF CHEMICAL CLEANERS BLEACH WARNING This sink is not connected to mains drainage It leads to a biological sewage amp wastewater treatment system DO NOT PUT THE FOLLOWING DOWN THE SINK FAT OIL OR GREASE EXCESSIVE AMOUNTS OF CHEMICALS 2 HOW THE DIAMOND WORKS 2 1 Operating Conditions The plant is designed to operate automatically with the minimum of maintenance after it has been commissioned The plant will provide effluent within the designed discharge consent standard after an initial start up period of 4 10 weeks depending on the water temperature It is important that the sewage input conditions are kept within the plant design criteria including the population equivalent as set by British Water 2 2 Inside the Diamond The Diamond system consists of two treatment chambers in a single tank The central aeration chamber is a circular tank with a sloped open bottom which empties into the bottom of the outer clarifier chamber Located in the centre of the aeration chamber is a circular draft tube which extends towards th
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