FAQ’s
Sewage Treatment Plant Info:
What is the maximum volume a sewage treatment plant can discharge without a permit?
Discharge from a sewage treatment plant must be 2 cubic metres or less per day in volume if discharging to ground (drainage field) or less than 5 cubic metres per day in volume if discharging to surface water. See these links for further information:
https://www.gov.uk/guidance/general-binding-rules-small-sewage-discharge-to-the-ground
https://www.gov.uk/guidance/general-binding-rules-small-sewage-discharge-to-a-surface-water
Can I discharge to a watercourse?
For guidance on discharging to surface water click on this link:
https://www.gov.uk/guidance/general-binding-rules-small-sewage-discharge-to-a-surface-water
What is the difference between bespoke hand made sewage treatment plants and moulded tanks?
Clenviro hand crafted systems are made from virgin polypropylene sheet. Our workforce cut and shape various sheet thicknesses to form bespoke treatment plants that meet our customers specific site requirements.
Moulded systems are formed using moulds built to a predetermined size and shape. This means that they are restricted when it comes to bespoke designs or requirements.
Although some manufacturers can meet deep invert levels, this is achieved by bolting extension pieces together. This is often difficult to fully seal and can have an impact on structural integrity. Clenviro achieve deep invert levels by manufacturing fully welded and steel reinforced access turrets. The fact that the turrets are fully welded means that ground water cannot enter the treatment plant to disrupt the biological treatment process.
Do Clenviro offer site visits?
Clenviro can attend your site or development to provide sizing advice based on your bespoke waste treatment requirements, although most sizing and advice can be given over the phone. Please get in touch with us on 01952 676666 if you would like us to help with your query.
What is the difference between a septic tank and a sewage treatment plant?
A sewage treatment plant treats sewage waste that enters the system and the treated effluent can be discharged to a drainage field / soakaway or watercourse.
A septic tank is designed to separate liquids and solids, allowing the liquids to drain away to a drainage field or soakaway, where the aerobic layer of soil further treats the effluent. Septic tanks cannot discharge to a watercourse.
What is the difference between a cess pit and a sewage treatment plant?
Cesspits are tanks or chambers that collect sewage, they do not treat the sewage and are emptied by approved waste management contractors, often amounting in high tankering costs.
How is a percolation test carried out and how big does my drainage field / soakaway need to be?
See below link and guidance on how to carry out a percolation test and size your drainage field:
https://www.gov.uk/government/publications/drainage-and-waste-disposal-approved-document-h
Where can I buy a Clenviro MATRIX Sewage Treatment Plant?
The Matrix Sewage Treatment Plant range can be bought from all builders merchants, e-commerce sites or Clenviro approved installers. You can also purchase your Matrix system from us directly, please click on the make an enquiry link for a call back from our technical advisors. Factory visits are welcome.
How can I pay for my new Clenviro MATRIX Sewage Treatment Plant?
Payment can be organised through all builders merchants or approved installers. If purchasing direct you can pay by debit or credit card over the phone.
Sewage Treatment Plant Design
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Sewage Treatment Plant Design ·
Sewage Treatment Plant Design:
How do the Clenviro MATRIX Sewage Treatment Plants work?
The MATRIX Sewage Treatment Plant is specifically designed to treat domestic sewage and other biodegradable waste in a simple and compact system comprising three basic stages, namely: 1. Primary settlement, 2. Biological filtration and 3. Final settlement.
The MATRIX Sewage Treatment Plant is quite simple, encouraging naturally occurring microorganisms to grow on the surface of the filter media, which in turn feed on and breakdown the sewage.
Primary Settlement: Raw sewage flows into the primary settlement chamber, where gross solids (primary sludge) settle to the bottom of the tank. This sludge remains within the primary settlement chamber until the system is desludged. The settled sewage displaced from the primary chamber then flows into the submerged filter zone via a DIP pipe.
Biological filtration: In order to generate flow of the settled sewage, air is pumped into the submerged filter zone (media) via an air diffuser. The hydraulic effect created by the diffuser draws the settled sewage down through the media, aerating the sewage in the process. The flow circulation ensures that the influent sewage receives several passes through the filter zone at low flow.
In the filter zone, as the sewage passes over the filter media it is purified by micro-organisms growing on the surface of the media. Growth of these micro-organisms results in an excess which is shed as solid particles known as humus solids. Humus solids settling at the bottom of the filter zone are recirculated with the flow of incoming sewage.
Final Settlement: Sewage displaced from the submerged filter zone flows via a DIP pipe into the humus settlement zone (final chamber). It is here where final settlement takes place and the humus solids form a thin crust above the treated effluent. Liquid displaced from the humus zone has now been fully treated and is known as final effluent.
Airlift recycle systems can be installed as a no cost option on smaller residential domestic units, but is standard from a CLF 3 (18 person) unit upover.
The final effluent is then discharged to ground or surface water as per the guidance in the links below:
https://www.gov.uk/guidance/general-binding-rules-small-sewage-discharge-to-the-ground
https://www.gov.uk/guidance/general-binding-rules-small-sewage-discharge-to-a-surface-water
Can a MATRIX Sewage Treatment Plant be installed in a trafficked area or driveway?
The MATRIX Sewage Treatment Plant can be manufactured for installation in all trafficked areas. Clenviro manufacture bespoke heavy duty treatment plants to order. The installer will then need cast a reinforced slab or install a concrete biscuit around the access in order to transfer the traffic loads away from the treatment plant.
MATRIX Sewage Treatment plants are supplied as standard with a pedestrian rated cover but can also have B125 (12.5 tonne loading) and D400 (40 tonne loading) covers supplied for heavy duty applications.
Clenviro need to be notified that a sewage treatment plant will be installed within a trafficked area before manufacture.
What are the MATRIX Sewage Treatment Plants made out of?
Matrix sewage treatment plants are manufactured from various thicknesses of virgin grade polypropylene plastic. Steel box encased within polypropylene box section is used to add strength to plants as the installation depth increases.
How are MATRIX Sewage Treatment Plants made?
Polypropylene sheets are cut to size and manipulated into shape by our experienced workforce. We then use thermoplastic welding techniques to weld the plant components together to form bespoke units for our clients.
What is the standard invert level of a MATRIX Sewage Treatment Plant?
The standard inlet invert depth of all MATRIX Sewage Treatment Plants is 600mm. If the invert of the inlet drain is deeper than this Clenviro must be made aware at time of order so that the unit can be manufactured to suit.
What is the deepest invert level of the MATRIX Sewage Treatment Plants?
The deepest inverts that we manufacture as part of our standard design is 2m, although we can manufacture units for deeper inverts by tweaking the design to strengthen the overall unit. Please get in touch with us if you have a deep invert enquiry.
Can I have both Gravity and a Pumped outlet on my MATRIX Sewage Treatment Plant?
MATRIX Sewage Treatment Plants can be manufactured for a dual gravity and pumped discharge, we just need to know before we put the unit into manufacture. Please make sure you communicate this with us during your order.
How far can a MATRIX Sewage Treatment Plant pumped outlet pump?
Clenviro standard pumps can pump a maximum distance of 100m and a maximum lift of 3m. For longer distances or lift heights we can upgrade the pumps supplied with each MATRIX Sewage Treatment Plant.
Can I change the orientation of the pipework on my MATRIX Sewage Treatment Plant?
The orientation of incoming and discharge pipework be altered for clients. Please contact our team for further information by clicking on the make and enquiry link.
What warranty is offered by Clenviro on MATRIX Sewage Treatment Plants?
MATRIX Sewage Treatment Plants are covered by a one year blower and pump warranty and a twenty five year tank shell warranty, commencing from the date of delivery.
All warranties are subject to the product having been installed in accordance with guidelines issued by the manufacturer and the equipment being used within the stated design parameters. Warranty cover is also subject to the equipment not having been misused or abused and that any routine maintenance required having been carried out in a timely fashion by authorized engineers. Any bought in component parts included in this product are subject to that manufacturer’s warranty, deemed to be not less than 12 months, unless specifically identified separately.
For our full warranty guidance please see our O&M manual
Is the Clenviro Matrix Sewage Treatment Plant certified by British Water?
The Clenviro MATRIX Sewage Treatment Plant is approved by British Water and fully complies with BS EN12566-3
What size Sewage Treatment Plants do Clenviro manufacture?
Clenviro manufacture MATRIX Sewage Treatment Plants for individual homes / developments (6 person population) up 300 person populations. For larger developments we manufacture modular systems which are simply connected together to treat sewage waste from all size developments.
Can I visit the Clenviro workshop and see my MATRIX Sewage Treatment Plant being made?
Customers can visit our workshop on request to see how we manufacture our treatment plants. Please also look at the videos on this website to look at the manufacturing techniques we use. We are unique in welcoming customers to view how our treatment plants are made.
Sewage Treatment Plant Installation
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Sewage Treatment Plant Installation ·
Sewage Treatment Plant Installation:
How are Sewage Treatment Plants installed?
See below British Water document: A guide to the installation of packaged wastewater treatment plants
The following instructions are offered for guidance only. It is for the customer/contractor to satisfy themselves that installation is in accordance with the prevailing ground conditions and regulatory requirements. Please ensure safe excavation practices are used, see HSE guidance: https://www.hse.gov.uk/construction/safetytopics/excavations.htm
To install a MATRIX Sewage Treatment Plant you need to excavate to the treatment plant dimensions allowing a minimum clearance of 150mm between the final position of the treatment plant unit and the excavation sides. Excavate to the appropriate depth for the installation i.e. depth of the unit plus 150mm minimum concrete thickness (actual thickness to suit ground conditions).
Lay and level the concrete base for the tank to a minimum of 150mm thickness.
Lift the tank into position using slings, taking care not to damage any external flanges or pipework. Ensure correct orientation of the inlet and outlet pipework. Check that the tank is level in all directions.
Commence backfilling with concrete in 500mm lifts, and at the same time, fill each tank compartment with water starting with the media bay section, ensuring that the progressive concrete and water levels are approximately equal (never exceed a difference of 200mm max ). The concrete must be evenly distributed around the unit, ensuring spigot connections are not covered at this stage. Never partly or wholly fill the tank with water before surrounding it in concrete.
Continue placing the concrete in 500mm lifts, terminating at the shoulder of the unit. Allow an initial set of the concrete between lifts and wait at least 24 hours for the concrete to cure.
Once the system is concreted in place it is time to connect the incoming and outgoing (if a gravity discharge) drainage pipework. A 110mm duct is to be installed from the ‘Air Inlet’ duct to the position of the blower. This duct will protect the braided hose and airlines (for units with sludge returns) which run from the linear air blower to the diffuser pipework in the Matrix system. The duct will also be used for pumped discharge Matrix units where an electrical cable will be run from the pump to the blower box.
Please ensure the ductwork is as straight as possible, do not use short radius 90 degree bends as this will increase the back pressure for the linear blower. The braided hose is to be cut to length ensuring there are no 90 degree bends (only long radius arcs). Once the braided hose has been installed the duct MUST be sealed with expanding foam when installation is complete or the blower warranty will be invalidated. These instructions must be adhered to in order to maximise the lifespan of the blower.
In order that you achieve a safe and cost effective installation, it is not possible to state a specific installation configuration that would suit all sites. The selection of current protection devices must remain the responsibility of the installer. It is imperative that electrical installation of this equipment is entrusted to a fully qualified electrician.
The blower unit can be positioned wherever is most convenient bearing in mind the need to get a power supply to it and the airline from it to the treatment plant.
If a pumped discharge has been requested on the treatment plant, the cable from the pump can be fed back up the airline duct to the blower unit within which is the electrical connection for the pump. Most pumps come complete with 10 meters of cable. The blower unit is supplied with 10 meters of airline as standard.
The airline duct MUST be sealed with expanding foam when installation is complete or the blower warranty will be invalidated.
When installing the electrical supply to the MATRIX blower unit, the following points should be considered:
The supply to the unit should be by means of a dedicated circuit with isolation and protection devices consistent with the requirements for fixed equipment and in accordance with the latest regulations of the Institute of Electrical Engineers.
The supply to the unit should be independent of all protection devices other than the supply authority's fuse and that provided specifically for the CLF power supply. In particular, earth leakage devices provided for normal domestic protection must not form part of the supply circuit to the MATRIX Sewage Treatment Plant.
How will my Clenviro MATRIX Sewage Treatment Plant be delivered and can I request a timed delivery?
Clenviro understand that site access can be tight when delivering our units so we try to deliver all smaller domestic units on our 5m Transit flatbed wagons. There will be scenarios such as when delivering larger units or in order to achieve a particular client specified delivery date where articulated or curtain sided vehicles are used.
We will organise our deliveries around your requirements (times etc). Please talk to us about your specific delivery requirements at the time of order so we organise your delivery to meet your expectations. Exact delivery time cannot be guaranteed due potential road conditions etc.
Do you deliver on your own Vehicles?
Clenviro understand that site access can be tight when delivering our units so we try to deliver all smaller domestic units on our 5m Transit flatbed wagons. There will be scenarios such as when delivering larger units or in order to achieve a particular client specified delivery date where articulated or curtain sided vehicles are used.
Do I need offloading equipment on site for my MATRIX Sewage Treatment Plant?
It is the responsibility of the client / installer to organise suitable offloading equipment.
HIAB offloading can be organised for an additional cost, please ensure that sufficient notice is given of this requirement.
Can Clenviro install my Sewage Treatment Plant?
Clenviro only manufacture MATRIX Sewage Treatment Plants and do not install our units. We can however put you in contact with a number of approved contractors who regularly install our MATRIX Sewage Treatment Plants. Please get in touch for more information.
Is a MATRIX tank easy to install?
Our approved installers and customers advise us that our units are a lot easier to install when compared to conical or cylindrical shaped systems.
Our flat bottomed design means that once positioned on the concrete slab there is minimal work when it comes to the concrete backfill. There is no propping of balancing of the units.
Our approved installers tell us that the flat bottomed design means that less concrete is used, up to 30% less on smaller unit and up to 50% on larger installations.
How much concrete do I need to install a MATRIX Sewage Treatment Plant?
Concrete usage will change depending on the system in which you install. You need to allow for a minimum of a 150mm concrete base and a 150mm thick concrete surround up to the shoulder of the tank.
How does the MATRIX Sewage Treatment Plant heavy duty system work?
In order to manufacture MATRIX Sewage Treatment Plants suitable for heavy duty applications such as driveways and roads, Clenviro reduce the size of the access to the tank. Once the tank is in position on site and backfilled with concrete, the installer then casts a separate reinforced concrete slab around the access. The B125 or D400 cover will then sit on this slab which diverts loading pressures away from the treatment plant below.
How big is the MATRIX Sewage Treatment Plant access cover and how visible is it?
Our standard pedestrian rated, B125 and D400 heavy duty access covers have a clear opening of 900mm x 900mm, they are flat and therefore can be installed to match the existing levels on site.
Other manufacturers have domed or protruding access covers, our flat covers mean that MATRIX Sewage Treatment Plants can easily be located within a driveway or lawn area without looking unsightly or losing space.
How far can the MATRIX Sewage Treatment Plant blower be located away from tank?
All MATRIX Sewage Treatment Plants are provided with 10m of braided hose to connect the linear air / side channel blower to the diffuser(s) within the sewage treatment plant. For applications requiring to be located further away than 10m, Clenviro will need to be consulted. If systems are located more than 10m away then the lifespan of the of the blower may be significantly reduced.
Is the Matrix Sewage Treatment Plant blower noisy and will I be able to hear it?
Clenviro install linear blowers in our small domestic units (6 – 30 person systems). See below the decibel rating for each of the blowers:
When looking at decibel ratings it is often difficult to know exactly what you will get, see below some examples of everyday noises and the decibel ratings associated with them to give you a comparison:
Whisper, quiet library, leaves rustling: 30dB
Average home noise: 40dB
Normal conversation or background music: 60dB
Inside a car whilst driving at 60mph: 70dB
Our larger systems are supplied with a kiosk rather than a blower box and have different options when it comes to reducing noise from our side channel blowers. Please contact Clenviro for more information.
How far from a dwelling can I install a MATRIX Sewage Treatment Plant?
Follow the link below for building regulations guidance regarding citing of packaged treatment plants (page 37):
https://www.gov.uk/government/publications/drainage-and-waste-disposal-approved-document-h
Do I need a Traditional Soil Vent Stack?
MATRIX Sewage Treatment Plants MUST have a traditional open soil/vent pipe at the head of the drain run. Air admittance valves, tile or ridge vents are NOT acceptable.
Can I buy an access extension because my invert level was lower than I first thought?
All standard MATRIX Sewage Treatment Plants are manufactured with a 600mm invert. Larger inverts can be requested before manufacture.
Retrospective access extensions can be manufactured by Clenviro, although extensions over 500mm will invalidate the structural warranty of the tank.
How do I become an approved Clenviro installer?
Please get in touch with us for more information, we are actively seeking new installers and distributers.
Sewage Treatment Plant Maintenance and Running
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Sewage Treatment Plant Maintenance and Running ·
Sewage Treatment Plant Maintenance and Running:
What maintenance do I need to carry out on my MATRIX Sewage Treatment Plant?
The owner of the sewage treatment plant is entirely responsible for the operation of the plant and for ensuring that the quality of the effluent does not breach the Environmental Permit Standards issued by the Environment Agency. MATRIX Sewage Treatment Plant only require minimal maintenance.
WEEKLY
Check the operation of the blower. If the blower has failed for any reason other than a mains power failure the warning beacon will be flashing.
MONTHLY
Carry out the weekly check plus:
Check the operation of the diffusers (bubbles rising in the Biological zone).
Check the recycle flow into the inlet zone (if fitted). Look at the liquor being returned, it should run clear by the end of its cycle.
Check the inlet and outlet stilling zones are clear of debris.( remove any obstructions).
Check the blower ventilation is un-obstructed.
Check the biomass growth on the filter media. The biomass should be a light brown colour, not white or grey. The odour in the plant should be 'earthy'. There should not be a noticeable 'rotten eggs' smell
Check the final effluent. If this is cloudy or contains many suspended particles, then the humus tank is likely to require desludging.
6 MONTHLY / ANNUALLY
Carry out the weekly and monthly checks plus:
Check the primary settlement tank with a probe , the top floating crust blanket should not exceed 200mm thick, arrange desludge if required.
Desludge the primary and final tank every 12 months* and desludge the biozone every 24 months*. This should be done by an experienced local waste disposal tankering company. * This applies to CLF units 1, 1A, 2, 3 & 4. Larger systems will require de-sludging more frequently depending on loading and type of application.
The tanker suction hose should be carefully lowered into the primary and final chambers ensuring all settled sludge is removed.
When desludging the biozone carefully lower the suction hose down the triangular section (rectangular in larger units) where the air diffuser pipework goes down making sure not to damage the pipework. Ensure the hose is down to the base of the tank so that all settled biomass sludge can be removed.
After desludging each compartment, it is essential that the unit is filled up with water. This can be done by using a hosepipe or by running several taps in the household(s).
Remove air filter from the blower unit (remove top cover to access filter), clean and replace.
It is the manufacturers recommendation that the diaphragms in the small blower units are replaced every 18-24 months.
The tanker suction hose should be carefully lowered into the primary and final chambers ensuring all settled sludge is removed.
When desludging the biozone carefully lower the suction hose down the triangular section (rectangular in larger units) where the air diffuser pipework goes down making sure not to damage the pipework. Ensure the hose is down to the base of the tank so that all settled biomass sludge can be removed.
After desludging each compartment, it is essential that the unit is filled up with water. This can be done by using a hosepipe or by running several taps in the household(s).
Remove air filter from the blower unit (remove top cover to access filter), clean and replace.
It is the manufacturers recommendation that the diaphragms in the small blower units are replaced every 18-24 months.
How often does my MATRIX Sewage Treatment Plant need emptying?
Desludge the primary and final tank every 12 months* and desludge the biozone every 24 months*. This should be done by an experienced local waste disposal tankering company. * This applies to CLF units 1, 1A, 2, 3 & 4. Larger systems will require de-sludging more frequently depending on loading and type of application.
Does the Clenviro MATRIX Sewage Treatment Plant smell?
All sewage treatment plants will have an initial smell when they are set up. The MATRIX Sewage Treatment Plant is no different and needs time for the microorganisms to grow on the filter media.
The time taken for these naturally occurring organisms to develop is dependent on temperature and may take up to six weeks. During the ‘establishment period’ whilst the biomass is fully developing, the treatment process will be incomplete.
It is important that during the establishment period that limited / no strong cleaning agents or bleaches enter the system as this will impact the microorganisms.
Any smells that are created during this establishment period should be drawn up and expelled at high level via a traditional open soil / vent. This is a must for treatment plants.
The foul drain to the treatment plant MUST have a traditional open soil/vent pipe at the head of the drain run.
USE of a Durgo Valve / Air Admittance valve is not recommended
How long does the tank take to be fully operational?
The establishment period for MATRIX Sewage Treatment Plants can be up to 6 weeks depending on temperature and the amount of cleaning agents or bleaches that enter the system.
Can I turn off the linear blower to my MATRIX Sewage Treatment Plant when not in use?
MATRIX Sewage Treatment Plants are designed and tested based on the blower being fully operational for 24 hours a day.
If your MATRIX Sewage Treatment Plant will not be used for a period longer than 2 months the following procedure should be followed:
Desludge the primary and humus tank compartments in accordance with the instructions in the Maintenance, section 6 of the O&M manual
Refill the plant with clean water.
Fit the manhole cover and lock if necessary.
Stop the blower by turning the isolator switch to off.
Switch off the power supply to the blower enclosure.
Will cleaning products affect my MATRIX Sewage Treatment Plant and what ones are best to use?
The MATRIX Sewage Treatment plant design is based purely on a biological process which, while extremely efficient and resilient, can be adversely effected by certain aspects of day to day living as it is a small private system.
It is essential to use cleaning and disinfectant products in minimal quantities. Ideally, use non-biological liquids rather than washing powders as liquids dissolve easier. Spreading washing over the week rather than having a weekly washday will help limit the impact on the microorganisms.
It is not just cleaning chemicals that have an impact on treatment plants, you need to really think about what you discharge down the drain. See below a list of liquids / items that should not be allowed to discharge into your treatment plant:
High strength sterilant e.g. descalers and baby bottle sterilant.
Garden chemicals.
Paint.
Engine oil.
Cooking oil or grease.
Dairy products.
Photographic chemicals.
Food waste from disposal machines.
Water softener regenerant due to high salt content.
How much does it cost to run a MATRIX Sewage Treatment Plant?
It is hard to calculate the exact running costs of our systems due to varying utility costs. Please refer to our technical page or the power ratings of the linear blowers. For any further information please don’t hesitate to get in touch with us.
Please use the link below to help calculate running costs: https://www.sust-it.net/energy-calculator.php
Do Clenviro offer aftersales support and technical backup?
Clenviro have a technical support team who can answer your queries during and after your purchase. Please call 01952 676666 to speak with us.
Sewage Treatment Plant Design
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Sewage Treatment Plant Design ·
MATRIX Topas Plus:
What is nutrient neutrality?
Nutrient neutrality is where a development which would normally be denied planning permission due nutrient pollution, introduces mitigation measures to reduce the nutrient load created.
See below links to further guidance on nutrient neutrality.
What is the difference between the MATRIX and the MATRIX Topas Plus?
In short MATRIX Sewage Treatment Plants are designed for typical UK effluent discharge standards whereas the MATRIX Topas Plus has been designed to serve developments which require low Phosphates and Ammoniacal Nitrogen within the final effluent. See below for more information:
The MATRIX Sewage Treatment Plant range is designed to achieve the minimum required effluent quality standard of 20mg/litre Biochemical Oxygen Demand (BOD), 30mg/litre Suspended Solids (SS) and 20mg/litre Ammoniacal Nitrogen (NH4), which in European standard performance testing relates to an efficiency of better than 94%. The certified performance of the MATRIX Sewage Treatment Plant is that it produces an average final effluent quality of 11mg/litre Biochemical Oxygen Demand (BOD), 16mg/litre Suspended Solids (SS) and 7mg/litre Ammoniacal Nitrogen (NH4). This relates to an average efficiency ratio of 96.2%, better than most other manufacturers, with individual test efficiency results being as high as 98.8%. Matrix test results
The MATRIX Topas Plus has been specifically developed for applications where greatly reduced levels of Phosphates and Ammoniacal Nitrogen in the final discharge effluent are being demanded by the regulating authorities.
Independently tested and certified to EN12566-3+ A2:2014, the MATRIX Topas Plus achieves average final effluent qualities of less than 1mg/litre of both Phosphates and Ammoniacal Nitrogen.
Available in standard sizes from single house to 300 person (residential) applications, the Matrix – Topas Plus has an established track record where ‘Nutrient Neutrality’ is a requirement. Matrix Topas Plus EN12566-3 Certificate
Why choose the Matrix Topas Plus?
The Matrix Topas Plus is the most efficient phosphate reduction sewage treatment plant on the UK market, with a 99% efficiency.
Whereas many currently available systems rely on theoretical flow calculations and chemical dosing levels, The Matrix Topas Plus is a sequential batch reactor such that only actual flows are dosed with a precise amount of chemical precipitant, which not only ensures running costs are kept to a minimum but also ensures that the chemical is not ‘overdosed’, as this can have a detrimental impact of the receiving environment.
What is a sequential batch reactor?
Whereas many currently available systems rely on theoretical flow calculations and chemical dosing levels, The Matrix Topas Plus is a sequential batch reactor such that only actual flows are dosed with a precise amount of chemical precipitant, which not only ensures running costs are kept to a minimum but also ensures that the chemical is not ‘overdosed’, as this can have a detrimental impact of the receiving environment.
What dosing solution is used in the Matrix Topas Plus?
The main two dosing solutions that can be used by the Matrix Topas Plus are Ferric Sulphate and Aluminium Sulphate. You will need to consult your local planning authority for guidance on which dosing solution is best for your geographical location.
Ferric chloride and Polyaluminium chloride can also be used as dosing solution in the Matrix Topas Plus. Please contact us for more details.
What maintenance do I need to carry out on my MATRIX Topas Plus?
See below the maintenance activities and intervals below:
Is the Clenviro MATRIX Topas Plus Sewage Treatment Plant certified by British Water?
The Clenviro MATRIX Topas Plus is approved by British Water and fully complies with BS EN12566-3 +A2 : 2014 Fully Certified
What levels does the MATRIX Topas Plus reduce phosphate and nitrate levels to?
Independently tested and certified to EN12566-3+ A2:2014, the Matrix – Topas Plus achieves average final effluent qualities of less than 1mg/litre of both Phosphates and Ammoniacal Nitrogen.
How big is the Matrix Topas Plus access cover and how visible is it?
For smaller units the access covers allow for full access to all of the Matrix Topas Plus (1.2m x 1.4m). The cover protrudes 100mm above the surrounding ground. See photos below:
How do I install my Matrix Topas Plus?
The following instructions are offered for guidance only. It is for the customer/contractor to satisfy themselves that installation is in accordance with the prevailing ground conditions and regulatory requirements.
To install a Clenviro sewage treatment plant you need to excavate to the treatment plant dimensions allowing a minimum clearance of 150mm between the final position of the treatment plant unit and the excavation sides. Excavate to the appropriate depth for the installation i.e. depth of the unit plus 150mm minimum concrete thickness (actual thickness to suit ground conditions).
Lay and level the concrete base for the tank to a minimum of 150mm thickness.
Lift the tank into position using slings, taking care not to damage any external flanges or pipework. Ensure correct orientation of the inlet and outlet pipework. Check that the tank is level in all directions.
Commence backfilling with concrete in 500mm lifts, and at the same time, fill each tank compartment with water starting with the media bay section, ensuring that the progressive concrete and water levels are approximately equal (never exceed a difference of 200mm max). The concrete must be evenly distributed around the unit, ensuring spigot connections are not covered at this stage. Never partly or wholly fill the tank with water before surrounding it in concrete.
Continue placing the concrete in 500mm lifts, terminating at the shoulder of the unit. Allow an initial set of the concrete between lifts and wait at least 24 hours for the concrete to cure.
How do I know if my dosing solution is running low or has run out?
The Matrix Topas Plus has a control panel which co-ordinates all stages of the treatment process. The panel is fitted with a SIM card which allows notifications or alarms to be sent to mobile devices to let end users know if the dosing solution is running low. The SIM card also allows for the system to be remotely monitored.
Each Matrix Topas Plus is supplied with a 1 year supply of dosing solution.
How do I know if the Matrix Topas Plus is running correctly?
The Matrix Topas Plus has a control panel which allows you to see what stage of the treatment process is currently active, it also displays if there are any faults in the system.
The Matrix Topas Plus can be monitored remotely, please contact us for more information.