Tricel Vento Septic Tank Installation Manual
Contents
1. LA DENN SS a i Il l i NI ip por ili i IR i IL ca R VA i Rums hia SI 4440 his cs SI a AC 1D 2700 P12 mu i PARO i 1230 A Mt 1180 MIL LIZ 2050 NIE peg Ip P20 e TIIA _ Ca IID aa ANO A TOT 1550 si i Ji It N SIL p HHRHH K lt H 2430 Tq PE EN 6 Lid Security Each lid should be secured at all times to prevent unauthorised access Tanks are supplied with two securing points as shown below To secure lid rotate until tight Tighten screw in place with screwdriver Lid is now secured in place 7 Manhole risers deep inverts Manhole risers are available for deeper installation requirements They are available in 180mm increments x 400mm diameter to a maximum height of 540mm max 3 risers All manholes lids are securable and must be secured for safety and to prevent unauthorised access All maintenance work is done through these manholes e Never install the cover of the system under ground level e Do not allow ground water to enter the system e Only Tricel Vento manhole risers shall be used Mi HAAS py At ae D ss LI LI IK el tH HA la sli HH il ji ee ce I NR Mi i gi oe ia N rai w Ai WYA aie nt StH RR nie it Nit2. TRICEL Table of contents 1 Health amp safety precautions ecceccssceescesceeeceeeeesceseeeaeesaeseeeaesaesessesseeeesaesaesaesaessesaeeeseaseaeeeeneaseates 2 2 Transportation offloading and storage eeeceeeeeeeeeeeeeeeeeseeaeeseeseeeeeeaeeeneaeeseeaeeseeeaeeaeeseteaneaneats 2 3 The wastewater purification process 3 4 lonkdimensions nia 4 5 Ti avait 4 6 Manhole risers deep invertS ii 5 T A LU 0 eee n 5 7 1 Pre installation Inspectioni e 5 7 2 QUICK installation guideliNes tirrenia nera ei nei nie eia eine ine eri rie ire rien eine 6 7 3 Detailed installation INformationi iiiii 7 T A Dry Site Aboca 10 7 5 Deeper tank installation amp wet site installationi i 11 7 6 Plinth and backfill specirications ciaai 12 Be PLUMbNS DE SSC C100 arrens E A A O ia 14 9 Finishing the garden to ground level eceececeseeeeeeeeeeeeeeeeeeeeesaeceeeseeseeseeeaeeseeaeeseseessaeeseeeaseaeeeeeeaseaees 15 10 Mantenne ah ai 16 11 OP STAINS Condino 17 It is important to read the full technical and installation guide prior to installation This document should be retained for the lifetime of the product and in the event of change of ownership be transferred to the new owner Precaution Prior to installation please consider finished garden level when installing the sys
3. is level and ensure that correct orientations are determined to accommodate the incoming pipe work e tis important that no excess ground water until the concrete is set It may be necessary to line the excavation with a continuous layer of 1200 gauge polythene to maintain the integrity of the dry mix 7 5 2 Installing onto the base plinth e Mechanically lift the plant carefully into the centre of the hole e The plant must be dead level on the plinth e Connect and seal the pipe work to the tank appropriately e Mount and seal manhole risers if required 7 5 3 Backfilling a wet site Top soil Ground Level arrr e Fillthe plant with clean water to a depth of 300mm and recheck the pipe work levels Commence backfilling with dry mix as per plinth and backfill specifications section 7 6 1 evenly around the tank ensuring that there are no voids Continue filling the chambers whilst backfilling ensure that the progressive water level is no more than 300mm above the backfill level e Backfillwith dry mix until it has reached the invert of the inlet pipe level e Continue backfilling with dry mix as per plinth and backfill specifications section 7 6 2 until dry mix has reached the inlet level e Complete backfilling with topsoil up to the max ground level line 12 7 6 Plinth and backfill specifications 7 6 1 Dry mix backfill specification Dry mix concrete is specified 200kg cement mixed with 1m3 sand Note Standard co
4. maintenance is completed Lids are not designed to be walked on 1 and storage Tanks must be held down during transportation using nylon straps do not use cables or chains to secure tanks Do not over tighten straps to cause deformation of the tank shell Always set the tank s on flat smooth ground free from debris etc To prevent movement tanks may need to be tied down Tanks are best lifted by crane or suitable lifting equipment and webbing lifting straps do not use chains or wire ropes in contact with the tank Ensure tank is empty when lifting Move tanks only by lifting and setting do not push or drag Do not drop or push tanks from truck trailer 3 The wastewater purification process The Tricel Vento septic tank is an ideal solution for wastewater treatment when used in conjunction with the appropriate disposal system The tank is divided into two chambers sized sufficiently to hold wastewater for an adequate amount of time for the solids to drop to the bottom to form a sludge and the lighter material to rise to the top of the liquid to form a scum The remaining liquid effluent is passed through the outlet pipe into the disposal system for final treatment 4 Tank dimensions Tank Name Vento 6 Vento 12 Vento 20 4255 sf 3056 10 2700 1190 1440 See section 6 1190 1140 175 355 225 5 Tank drawings P6 FRA Sy 2 ili T ST
5. AG a Ue R a 7 Installation All installations must be fit for purpose to suit the on site conditions which will vary from site to site This is the responsibility of the onsite contractor The Tricel Vento is suitable for a maximum manhole riser of 540mm which gives a maximum outlet to ground level invert of 960mm The Tricel Vento is not suitable where a deeper installation is required 7 1 Pre Installation Inspection Tanks should be subject to visual inspection prior to installation Check for fractures to the shell or ribs deformation punctures scratches or abrasions deeper than 1 5mm Any damage should be notified to the delivery driver and or to your supplier Do not attempt to carry out any un authorised repairs as this will invalidate the warranty on the tank Once the tank has been installed we cannot accept any claims for damage 7 2 Quick installation guidelines A dry site is one where the water table never rises higher than the base of the Tricel Vento unit and the ground is free draining A wet site is one where the water table may rise higher than the base of the Tricel Vento unit or where the soil does not allow water to drain away at the same rate The unit should never be installed where ground water can rise higher than the outlet pipe Guidelines Dry Site Wet Site All installations must be Fit for purpose to suit the on site conditions which v v will vary from site to site This is the
6. ction purposes and also to assist in any blockages that may occur Distribution box 450mm high x 300mm opening Riser extension 300mm opening x 270mm high 8 3 Ventilation Ventilation is crucial to the system Prior to installing the system great care must be given on how to provide adequate ventilation As sites differ advice is available from BS8301 BS6297 EPA CoP 2009 The Tricel Vento septic tank is supplied with 1No 110mm socket next to the inlet pipe which may be used for venting the tank if vent through the eve is not possible 10 Maintenance Note All maintenance work should be carried out from outside the tank There is never a need to enter the septic tank A certain amount of unit maintenance is required on an ongoing basis to ensure that the system is working correctly This is the responsibility of the homeowner 10 1 Quarterly Maintenance 3 months The outlet distribution box should be checked monthly to ensure that the effluent is free flowing and clear The vent should be checked to make sure they are not blocked or covered with over grown grass 15 10 2 Yearly maintenance De sludging should be also carried out yearly to prevent solids rising to the height of the outlet pipe and being carried along with the liquid into the percolation trenches This blocks the percolation area and can cause flooding Depending on usage and house population this period may vary The de sludging of the Tricel Ven
7. fully into the centre of the hole and place on the prepared plinth e The plant must sit dead level on the plinth e Connect and seal the pipe work to the tank e Mount and seal manhole risers if required 7 4 3 Backfilling dry site Gravel e Fill the plant with clean water to a depth of 300mm and recheck the pipe work levels Commence backfilling with gravel as per plinth and backfill specification in section 7 6 2 in layers of 225mm evenly around the tank ensuring that there are no voids Compact each layer ensuring the vibrating machine does not come in contact with the plant Continue filling the chambers whilst backfilling ensure that the progressive water level is no more than 300mm above the backfill level e Continue to backfill until gravel has reached the inlet pipe level e Complete backfilling with topsoil up to the max ground level line 7 5 Wet site installation A dry mix surround must be installed in wet site conditions A wet site is one where the water table may rise higher than the base of the Tricel Vento unit or where the soil does not allow water to drain away at the same rate 11 7 5 1Tank base plinth e Remove any soft spots or large stones and boulders e The base is constructed of a 300mm layer of dry mix Refer to plinth and backfill specifications in section 7 6 1 e Ensure that base
8. higher than the cover of the Compact evenly around the riser extensions to reduce risk of distortion Ensure that No surface loadings are transferred from the cover direct to v x the tank Cover frame construction should allow movement An access chamber should be installed before and after the tank to assist in clearing possible blockages If sewage consists of high quantities of grease e g from a restaurant a grease trap may have to be installed on a separate drain prior to the system 7 3 Detailed installation information 7 3 1 Siting The minimum set back distances for installing the septic tank are outlined below Ireland England Wales Scotland Northern Ireland Hedge or tree 3 metres 5 metres 5 metres 5 metres roots The minimum set back distances for soak away percolation area are outlined in the table below Ireland England Wales Scotland Northern Ireland Well borehole or spring Depends on 50 metres 50 50 metres site conditions metres Watercourse 10metres 10 metres 10 10 metres metres E o Road railway 10meters permeable drain In England and Wales there is a specified distance of 25m and 4m vertical distance of where the de sludge tanker can park In Scotland this distance is 30m and 3m vertical The Tricel Vento should not be installed in an area subject to flooding or excessive water runoff The area around the Tricel Vento should be adequately drained to permanently remove water from the pr
9. ncrete mixes should not be used where sulphates or similar aggressive chemicals are present in the groundwater Lift height rate of rise Determine the lift height m or rate of rise m h for the specific concrete type used to ensure that a design pressure P max of 15kN m2 on the tank is not exceeded Vibration The design of the tank assumes minimal compaction of the surrounding concrete Where necessary this may be extended to include light internal vibration Never use deep revibration which will substantially increase the pressure on the tank possibly causing failure Impact of dry mix on discharge Under no circumstances should dry mix be discharged directly onto the tank 7 6 2 Gravel backfill specification Primary Backfill material should be free flowing granular material The design of the tank assumes minimal compaction of the surrounding concrete Compact evenly around the turret extensions to reduce risk of distortion Tanks must be installed with primary backfill only within the region immediately surrounding the tanks This primary backfill must extend a minimum of 200mm outward from the tank and directly beneath the tank The following materials are approved as Primary Backfill e Rounded pea gravel Minimum particle size 3mm maximum 18 mm compacted to a relative density of gt 70 Gravel shall be clean and free flowing free from large rocks dirt sand roots organic materials or debris Upon screeni
10. ng analysis the backfill material shall have no more than 5 by weight passing 2 36 mm sieve e Crushed or processed stone Minimum particle size 3 mm maximum 12 mm compacted to a relative density of gt 40 Dry gravel density must be at least 1500 kg m3 Material should be washed or screened to remove fine particles Upon screening analysis the backfill material shall have no more than 5 by weight passing 2 36 mm Sieve Use of other than specified backfill and bedding materials will void the tank warranty 13 Backfill material shall not be frozen or contain lumps of frozen material at any time during placement 7 6 3 Top soil Clean native top soil shall not contain rocks larger than 36mm on largest dimension Note The use of geo textile barrier fabrics surrounding the primary backfill material is considered good installation practice The fabric must be chosen to allow the flow of water in and out of the excavation but to prevent the movement of fine soil particles into the primary backfill material 7 6 4 Burial depth Generally the max depth from finished to the inlet invert level of the main shell should be no more than 755mm for P6 and 825mm for a P12 and P20 7 6 5 Loadings If the plant is installed in an area where traffic or other superimposed loadings can be applied consult a structural engineer for the design of a reinforced concrete slab to prevent the load being transmitted to the tank or its concrete s
11. operation of the system Correctly constructed distribution chambers and distribution drains or polishing filters are necessary as part of the treatment process Incorrectly constructed drains or polishing filters could result in poor treatment of effluent and we do not accept any responsibility in this regard e If the plant is not installed correctly flooding overloading or floatation may occur We are not responsible for incorrectly installed systems e Soak ways drains and the emptying of primary tanks remain the responsibility of the client and damage to the installation due to the influx of surface water or the backing up of soak ways or drains is not covered by the manufacturer 16 e We shall not be liable for any damage or loss including consequential loss caused by the failure of any plumbing equipment or failure caused by the inclusion of gross solids e g disposable diapers or sanitary towels etc in the septic tank e To ensure the continuance of the plants performance the user has to take certain precautions including the following The design loading of the plant should not be exceeded High volume discharges such as those from swimming pools and Jacuzzi s must never enter the plant Surface water must not enter the plant Do not allow large quantities of chemicals to enter the system including Water softener regenerate Disinfectants Strong acids and alkalis or photographic chemical
12. oximity of the tank The Tricel Vento system is not suitable to be used in water logged sites where the water level may rise above the outlet level 7 3 2 Controlof groundwater During installation tanks must not be subjected to buoyant forces Incorrectly installed tanks that are subject to movement rotation or floatation may become damaged for which we cannot accept liability Contact a qualified engineer if there are difficulties on site due to adverse water logging 7 3 3 Note water logged sites The Tricel Vento septic tank is not suitable to be used in water logged sites where the ground water may rise above the outlet level Adequate drainage is important to improve wet sites or sites with a high water table level It is recommended that water is removed from the area surrounding the system to prevent flotation Excessive loading caused by site water can harm the system please consult with the manufacturer or a qualified engineer if in doubt 7 3 4 Excavation size Suitably sized equipment will be required to excavate the hole and to lift the system into place Installation depends on on site conditions water slopes location etc Excavation should be planned with due regard to Health and Safety requirements and should be either shored or battered back to a safe angle The excavation should allow a minimum 200mm clearance between the tank and the excavation wall or face of shoring Unstable ground with excessive sand
13. peat swamps etc may require larger excavations The excavation should be maintained dry by pumping or whatever suitable means External dimensions Width in meters x Length in meters Total excavation Tank Width 400mm x Tank Length 400mm Excavation depth Allow 200mm for a tank base plinth 7 3 5 Excavation depth The excavation depth is determined by the inlet pipe invert level relative to the bottom of the tank and allowing for the minimum base thickness shown Dimension details of the tank are shown on the relevant drawing in section 5 Ground instability at formation level e g running sand may necessitate over excavation and stabilisation with hardcore or blinding concrete Note The maximum depth for the base slab is 2105mm for a P6 and 2215mm for P12 and P20 Dry Site Wet Site D Gravel ll m DI Site Conditions a minimum iin mm b minimum in mm 200 200 10 7 4 Dry site installation A dry site is one where the water table never rises higher than the base of the Tricel Vento unit and the ground is free draining 7 4 1 Tank base plinth e Remove any soft spots or large stones and boulders e The base is constructed of a 200mm layer of gravel e Ensure that base is level and at the correct height to accommodate the incoming pipe work 7 4 2 Installing onto the base plinth e Mechanically lift the plant care
14. responsibility of the onsite contractor Never push the tanks Tanks shall be lifted into position The unit should be located as far away from the dwelling as is practically v di possible considering topography and pipe work levels Separation distances must meet all National and Local regulations Dig a hole circa 400mm larger than the system in plan Remove any soft spots or boulders of significant size from the base or sides v di of the excavation Ground water must be pumped to give a dry excavation and excavation lined with polythene if necessary cel i this must be flat and level A base is constructed of a 300mm layer of dry mix to suit site conditions This must be flat and level J v Ensure gravel dry mix are clean and contains no large materials TO Lift tank into position and align as required for connecting pipe work access v v shafts etc Ensure that each tank is 100 Level and that inlet outlets are in the y v correct orientations Fill tank with water at the same rate as you backfill the tank Commence gravel backfilling in 300mm layers to 100mm over the tank ensuring tank and any pipe work is properly supported v Commence backfillingin 300mm layers to 100mm over the tank y ensuring tank and any pipe work is properly supported Minimal compaction should be used on the surrounding backfill Aa Complete backfilling with topsoil up to ground level Ensure that surrounding finished ground level is never
15. s Oijlor grease Petrol or diesel Pesticides Do not allow any of the following in to the system Large quantities of milk alcohol or food Large quantities of bleaches or cleaners Baby wipes cosmetic and cleaning wipes Sanitary towels Kitchen paper Nappies Tampons Medication e Service personnel must be accommodated with clear access to the plant e f the plant has been sized by others we will supply a plant to these specifications In this case the responsibility lies with others in relation to the maximum flow litres per day the system Capacity and retention times e f we size the plant and a greater load is placed on the system by the addition of extra houses bedrooms in the houses schools cr che etc or by any other means we are not responsible for the plant in terms of overloading or the quality of the effluent as the retention times may be compromised e The plant is not suitable for vehicular traffic We also recommend fencing off the area to prevent livestock herds from accessing the unit Where possible unnecessary human traffic around the tank should be avoided Terms amp conditions Subject to our standard terms and conditions which are available on request In accordance with our normal policy of product development this specification is subject to change without notice March 2014 17 TRICEL GENERATIONS OF INNOVATION Tricel Killarney Ball
16. tem If you envisage that a manhole riser extension may be required to ensure manhole lid remains above finished ground level the system must be installed with the appropriate excavation foundation and backfill to accommodate the riser Please refer to page 5 for manhole riser details CE Certified to EN 12566 1 1 TTM T202 Revo2 9 Sept 14 1 Health and safety precautions As safety and security are of vital importance in septic tank installation the following aspects are critical Ensure that all the information contained in this manual is adhered to at all times Because of working with machinery and electrical equipment proximity of water shall be noted There is potential danger when de sludging and therefore this shall never be done alone Never enter a tank unless qualified to do so Naked flames shall not be used in the vicinity of the tank due to the danger of combustion The manhole cover shall never be left off an unattended tank Protective clothing gloves shall be worn at all times Always remove contaminated clothing and protective equipment after working with septic tank Wash hands and face prior to eating drinking or smoking A second person shall be present when carrying out maintenance A sampling box should be constructed if required to facilitate sampling and inspection without placing personnel at risk Great care shall be taken when handling sludge Always secure the cover of the system when
17. to septic tank is the responsibility of the homeowner De sludging is done with a vacuum tanker we recommend the use of a licensed company The minimum recommended desludging period is 1 year for all tank sizes 10 2 1 De sludging emptying the solid waste e Remove both access covers e Remove the filter e Empty the Tricel Vento septic tank using a vacuum tanker Care must be taken not to damage the tank with the hose of the vacuum tanker e Ensure that all the solids are removed from the tank e Replace the de sludging access cover securely Notes e Do not let this equipment drive over the tank Maintain a distance of at least 4 meters away from the covers of the tank e The access cover should never be left off while the unit is unattended e De sludging should never be carried out alone The property owner has a legal responsibility to ensure that the system does not cause pollution a health hazard or nuisance berating conditions e The manufacturer s instructions outlined in the technical manuals must be followed at all times e It is important that the plant is operated under the conditions for which it is designed Any variation in these conditions could lead to the unit not performing to its full potential e De sludging is a critical part of the successful operation of the Tricel Vento Septic tank Only competent approved personnel should carry out de sludging e The discharge to the ground is also a critical part of the
18. urround If this slab is constructed immediately above the plant it should be separated from the concrete surrounding the tank by a compressible material 8 Plumbing the system Do not Plumb storm water water from roofs drains footpaths etc into the Tricel Vento septic tank A competent person in accordance with this manual should connect the plumbing from the dwelling to the septic tank The Tricel Vento septic tank is plumbed for 110mm uPVC pipe The pipe should be vented by means of a vent pipe above the eaves of the house A short length of pipe with flexible joints should be used immediately before and after the tank to allow for movement between the tank and the pipe work 14 8 1 Treatment of effluent liquid The Tricel Vento septic tank acts as a holding chamber and treatment of effluent is carried out in the percolation area Effluent may be disposed into any of any of the following means for treatment The best disposal method can depend on a variety of site factors including percolation results soil type water table level and topography of the site Please refer to the onsite engineer for further details 8 2 Distribution box A distribution box and or inspection chamber should be fitted between the tank and the percolation area A Distribution box is required to spread the flow throughout a percolation area An access chamber should be placed before and after the Tricel Vento septic tank for sampling and inspe
19. yspillane Ind Est Killarney Co Kerry Ireland Tel 353 0 64 66324211 Email sales ie tricel eu www ie tricel eu Tricel Gloucester Ltd Fox House Stonedale Road Stonehouse Gloucestershire GLO 35A United Kingdom Tel 44 0 1453 791616 Email sales uk tricel eu www uk tricel eu In accordance with Tricel normal policy of product development these specifications are subject to change without notice 18
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