domestic wastewater treatment plant

Biocell Domestic QuickOne+

(34 customer reviews)

£ 2,000.00£ 3,289.00

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For the highest effluent quality at the lowest power consumption on the market*, choose the QuickOne+.

*Certified by EN-12566-3, SR66, British Water, UK2020 Septic Tank Upgrade Regulations, CE marked

Available in 6/8/12 person capacity with gravity/pumped outlets.

Riser kits not needed for normal installations. Riser kits available from 250-1000mm for deep installations.

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The Recommended Domestic Wastewater Treatment Plant for Quality and Cost

The QuickOne+ domestic wastewater treatment plant produces the the highest effluent quality at the lowest power consumption on the market. It is available from 4 to 48 persons with gravity or pumped outlet and riser kits up to 1000mm for deep installations.

The simple design of the QuickOne+ features a single piece reinforced HDPE water tight tank with a flat base for easy installation. It is suitable for below ground installation in most soil conditions without needing a concrete backfill on most sites, thereby saving time and money on costly installation works.

The Domestic QuickOne+ home sewage treatment system uses a process powered totally by air and naturally occurring bacteria. There are no moving parts inside the tank and it does not require any chemicals or additives to function. It operates quietly and without any unpleasant smells. Our end users enjoy complete peace of mind with one of the most reliable tried and tested septic systems on the market.

The QuickOne+ holds a CE declaration independent test certificate, meets EN12566-3 and SR66 standards and is approved by British Water. We can therefore guarantee the quality of this domestic wastewater treatment plant.

  • Highest effluent quality at lowest power consumption on the market [proven by EN12566-3 testing]
  • Super strength tank with stainless steel reinforcement  [no concrete backfill for most sites]
  • EN12566-3, SR66 and British Water approved equipment
  • Lowest electricity consumption of any system on the market
  • Manufactured in Germany – ISO quality approved and CE marked
  • The best solution for reliable, long term, safe wastewater treatment for your property

The Recommended Domestic Sewage Treatment Plant for Homeowners and Builders

If you are a homeowner and need to buy a domestic sewage treatment plant, the QuickOne+ is the ideal low cost choice for domestic wastewater treatment.

Low Installation and Running Costs

With the QuickOne+ you benefit from significant savings not only in terms of initial installation costs but also running costs and long-term maintenance costs. It costs as little as €0.10/£0.08 per day to run (lowest power consumption) and produces 30% less sludge on average than the competing domestic sewage treatment plants.

Peace of Mind

For additional peace of mind, we provide a dedicated nationwide customer support service to assist new and existing customers. For long term care we offer value for money maintenance packages to keep your new home sewage treatment plant in top working order.

High Quality

The QuickOne+ is compliant with all European standards, EN12566-3, UK2020 septic tank upgrade regulations and SR66 regulations in Ireland. The single piece high density HDPE tank is reinforced with stainless steel so no concrete is ever required to install this domestic sewage treatment plant and is guaranteed to be watertight. All components are CE approved.

Fast Delivery and Installation

Once an order is placed we offer quick turnaround times and a rapid nationwide delivery service. A mini digger is perfectly suitable for installing this shallow dig tank. It has a flat base for simple installation (unlike curved or cone-shaped tanks that are difficult to install) and risers for deep installations.

Why buy from us?

We offer a nationwide customer support service to all end users. For long term care and maintenance, we offer value for money maintenance packages. We guarantee the quality of our products with independent testing and CE approved parts.

How does the QuickOne+ domestic wastewater treatment plant work?

The QuickOne+ is a plug and play home sewage treatment plant. The full treatment process happens within a single tank. The treatment process is quick, simple and trouble free. Unlike other systems, the tank does not need constant electricity to produce the amazing effluent quality it achieves.

  1. Raw sewage from the home flows into the sewage treatment plant.
  2. The air blower activates and runs in an on/off cycle to aerate the wastewater via the bubble diffusers.
  3. Naturally occurring bacteria develop in the aerated wastewater.
  4. The bacteria feed on the organic material and nutrients in the sewage. The aeration process supplies the bacteria with abundant oxygen, allowing them to multiply and clean the wastewater to industry leading standards.
  5.  Any remaining fine solids in the wastewater settle to the very bottom of the tank producing sludge (settlement phase).
  6. The treated effluent at the top of the tank is discharged to the soakaway or stream/watercourse.


What happens to the sludge?

Sludge accumulates inside QuickOne+ which has a total capacity of 3,500l. Like all treatment plants, the sludge should be removed on a regular basis by a professional sewage disposal company who pump it out and take it away for disposal. This is the most economical way to tackle sludge in domestic wastewater treatment systems.

Can I upgrade my septic tank with a QuickOne+?

The QuickOne+ domestic wastewater treatment plant meets the necessary requirements for upgrading or replacing an existing septic tank.

Do I need a riser kit?

A riser kit is only required for deeper than standard installations. Ask your site engineer if in any doubt.

What are the terms and conditions?

Terms and conditions


QuickOne+ Brochure

EN12566-3 Certificate

SR66 Certificate

Plan for 3-5 Bed House Gravity Outlet (6PE)

Get in touch:

  • Please add any additional information about your requirements here.

Additional information


4-48 person systems available

Discharge Options

Gravity or pumped

Electrical Consumption (per day)

Low energy consumption on market
6 persons models: €0.10 / £0.08
8 persons models: €0.12 / £0.10
12 persons models: €0.16 / £0.14
14 persons models: €0.18 / £0.15

Treatment Standard

98% treatment efficiency

Inlet Pipe Size

110mm / 4" PVC

Outlet Pipe Size

Gravity models: 110mm / 4" [OD]
Pumped models: 38mm / 1¼" [OD]

Manhole Extensions Available

Yes – to 1000mm depth

Manhole Size

Ø 680mm – low visual impact

Tank Material

HDPE with reinforcement – unbeatable strength

Electrical Supply

3 core 220v supply to plant


EN12566-3, SR66, DIBT, British Water approved equipment

CE marked

Tank and all components CE approved

Suitable For Below Ground Installation

Yes – without concrete backfill

34 reviews for Biocell Domestic QuickOne+

  1. Sarah hall

    Really good price and great customer service.

  2. M O Connell

    The staff at Biocell were very helpful and willing to answer all my questions regarding sewage treatment for our site. We bought the Quickone system from them. It came as planned and our builder installed it within a day.

  3. sara

    great customer service

  4. Tricia Webster

    I would highly recommend Biocell and the QuickOne+ treatment plant for self builds, the team are very helpful and friendly if you have no experience and loads of questions! The price we got from them was the best of all the quotations and we got a very good deal on a maintenance package with them too. The installation was done in a day so absolutely delighted.

  5. Scott

    Hi there,

    Read the above reviews with interest, I’m still not clear on 2 points

    1. As I read it this unit reduces the quantity of sludge
    -Why is this important if the sludge is going to be disposed of down the sewer pipe in the first place?
    -What capacity of this sludge is stored in the tank and how is it removed?
    2. Is there a system that offers a solution to tackle the sludge after you have processed it?

    Thank you

    • James Clarke

      Hi Scott, thanks for your interest in the QuickOne+ and your questions. Firstly, sludge is not disposed of down the sewer pipe – it accumulates inside QuickOne+ which has a total capacity of 3,500l. Like all treatment plants, the sludge should be removed on a regular basis by a professional sewage disposal company who pump it out and take it away for disposal. This is the most economical way to tackle sludge in domestic systems. If you have any other questions, don’t hesitate to get in touch.

  6. sarah mccafferty

    Great price and service. Really quick and tidy installation too. Thanks to all at Biocell.

  7. Dennis Walker

    Just believe the reviews and get one.
    You will not be disappointed.
    Had mine installed and running for three months now and completely problem free, also almost noiseless.

  8. ken

    What happens to the sludge?

    • James Clarke

      Thanks for your question Ken. The process the QuickOne+ uses stabilises the sludge produced – thereby reducing volumes produced relative to other systems. So while sludge is produced, the volume is minimal. Aerobic stabilisation is performed simultaneously in our QuickOne+ plant, whereby primary and secondary sludges are continuously aerated for long periods of time. In aerobic digestion the microorganisms extend into a respiration phase where materials previously stored by the cell are oxidized, resulting in a reduction of the biologically degradable organic matter or sludge. If you have any other questions, feel free to leave your contact details using the contact and we’ll get in touch.

  9. Ollle

    A little unsure about these reviews? As you read through them they seem to cover all angles, suspicious of authenticity, would appreciate a comment from supplier replying to some negative comments? And not the half complaint about location and late delivery,…there cannot have only been all good comments

    • James Clarke

      The honest answer is that this is probably the best systems on the market, hence all the good reviews. Its the only sewage treatment plant on the market with stainless steel reinforcement internally. And the independent test certificate from PIA Gmbh in Aachen [notified CE marking tact facility] shows the Biocell QuickOne has the best effluent quality ad lowest energy use of any available system. Please email us with your details and we will send on all info to demonstrate this. Thanks for your comments.

  10. Paul Rinder

    Was confused about what plant to go for until I compared all the systems Independent test certs. The Biocell plant has way lower running costs and way higher treatment levels. I dont know what anyone would buy elsewhere.

  11. P Ringwood

    A highly engineered product. Recommended.

  12. A. Shortt

    Good advice, good product. Recommended.

  13. paul whittington

    very nice unit. almost invisible after installation 🙂

  14. A Fenton

    My installer was very pleased when he hears I had purchased a biocell plant. Watched the installation and it looked like a really high quality bit of equipment.

  15. Archie West

    Completed significant market research. A huge range of products out there. Many seem to make false claims. I found out that every plant has an independent test certificate showing power use and treatment standards so just compared these and went for the quickOne then. Easy choice in the end.

  16. Simon Bane

    When it arrived I knew I had made the right decision. The quality of the product was instantly visible. Barely noticeable in the garden after installation.

  17. Barry Eviston

    Had one of these installed as part of an upgrade. Very minimal visual impact with small green lid.

  18. Val Robinson

    I build 5 houses a year and I am in business 20 years. Most of my work requires an off mains drainage solution. These tanks are simply the best engineered tanks on the market. When you see this tank arrive you will be pleased you went for one and avoided some of the other rubbish on the market. I have seen it all. Green lid is very handy also – you can hardly see it in the garden. Good job biocell!

  19. Robert G

    Ordered Christmas week. Installed over Christmas. Had loads of visitors so it got a very good test and all good!!

  20. Tony Quill

    Very pleased when I saw the tank. Images of the quick one look good on website, but it is equally impressive in reality. My installer was also happy to see it as he says he is sick of some of the rubbish people ask him to install. 5+

  21. Moham Stapp

    Very good tank. I am very pleased with my choice.

    • James Clarke


  22. Sam Connolly

    Winter is coming. We have had serious issues with our old system for the last few years. Its becomeing a nightmare emptying it. Was out there on christmas day last year. Got a few quotes last year but we could not afford it. Was speaking to my cousin recently who built a new house and got a tank from biocell. I had given up on it at this point due to my budget, but said I would call them as my cousin insisted. Anyway. I wont write an essay – but they did a full assessment, then gave me a price, then did the work and actually stuck to the price [!!!!] and im looking forward to a winter where I am not out in the garden every week pumping out the tank. Dont write reviews but making an exception here.

  23. Tony P

    Building 5 houses to sell. Got excellent advice from the biocell guys on my soakaway system also. All approved by the local council and installed a 25 pop system. Good value for money. Will use them for my next project. They installed a system for my local school – so thats how I heard about them.

  24. A Kelly

    Live beside a lake. Building control imposed very strict treatment standards. Biocell has the good standard at a good price. Installed by my groundworker and he said it was a great tank. Im no expert but it looked like a serious piece of kit.

  25. Adrian Capel

    Building a passive house. The Biocell quickone has the lowest energy of ANY system I came across. Also has an amazing level of cleaning. I was very surprised at some systems on the market. Their electricity use is just HUGE. The biocell unit ticks all my boxes.

  26. Alpine Drainage

    We are a drain cleaning company that does the odd install. Sales guys were straight up with answers to all my Q’s. Installed the tank 4ft below the garden level without a problem. Im happy and my client is happy.

  27. Martin Burke

    I used it to replace a leaky concrete tank that has been a nightmare. Went for the biocell as it had a lower electricity use than any other system. Retiring soon so every penny counts.

  28. Billy Morrison

    Have my own digger. Have installed approx 3 tanks over last 10 years. This was the best yet though – which is great as its for my daughters house. Lovely shallow dig tank. Serious strength in the tank. didnt have to be careful with the install. Have been keeping an eye on it for last few weeks and its A1.

  29. Patricia K

    It was my job was to review and choose a sewage system for our new self build for my husband. Happy with the system. No problems during installation or operation. Nothing to compare it to really though so 4 stars.

  30. Ian Thompson

    Was worried about noise as my neighbour has a different brand of system installed and it is very noisy. They guys at biocell said it was quiet. I took the chance and I am 100% satisfied. Compared to the neighbours unit the difference is shocking!

  31. Barry Quinn

    All good. Installed now. Digger guy said he was very happy to be installing it as the reinforcing makes his job very easy. However, -1 star as was supposed be delivered tuesday afternoon but didnt arrive until wednesday morning. to be fair they did say that they could not guarantee next day delivery due to my location. But I am a harsh critic!

  32. Ed Moriarty

    Did a bit of research and went for the Quickone domestic. No complaints. Good service.

  33. Stanley – UK

    Got a 6 pop tank for my new house. Price was keen. Very happy with product on arrival. Sales guy knew his stuff. 5+

  34. Adam Freylit

    Needed a system fast. Delivered 1 day after order. Very impressed with tank when it arrived. DIY installer here. Installed now and working perfectly. Would barely know there was a system in the garden.

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