Klargester BioDisc Domestic Sewage Treatment Plant

BioDisc Hero - RGB-1

Our Klargester BioDisc® models have been designed to cater to homes without access to mains drainage. With 65 years' of expertise behind the engineering of this range, we have created a unit that offers optimal performance with affordable lifetime running costs, whilst fully compliant with European standard EN 12566-3 .

  • This unit is ideal for locations where discharge is to sub-surface irrigation, or to a suitable watercourse, or where a septic tank will not meet the required standards.
  • We have four models available, which can be selected after a quick consultation with our team to assess the needs of your home.

For more information call our team today on 0129 663 3000, or contact us using one of the alternate options below.

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 Get a quote

​Features and benefits

  • Low noise & odours
  • Suitable for homes with up to 18 people.
  • Low profile covers for minimal visual impact
  • Invert options to match the site
  • Control panel issues an immediate alert when a problem occurs
  • Single phase standard power supply
  • Optional integral pump available
  • Certified to European Standard EN12566-3
  • CE-marked
How the Klargester BioDisc® Works

Central to the operation of each Klargester BioDisc® is the Rotating Biological Contactor (RBC), which supports a biologically active film or biomass on to which aerobic micro-organisms, naturally found in sewage, become established. Natural breakdown of sewage can then occur as described below.

The Breakdown Process

Wastewater and sewage flows into the primary settlement zone (1) where solids are settled out and retained. This accumulated sludge should be drawn out periodically.

 Partially clarified liquor containing fine suspended solids flows upwards into the first stage Biozone (2) for breaking down by micro-organisms on the RBC. Suspended solids return to the primary settlement zone and the liquor is transferred to the second stage Biozone (3) for further treatment.

 Any solids remaining are settled out in the final settlement tank (4) . The very high effluent quality is discharged to a watercourse.

 The RBC comprises banks of vacuum formed polypropylene media supported by a steel shaft. This is slowly rotated by a low energy consumption electric motor and drive assembly.

 Note:The Klargester BioDisc® is designed to deal with normal domestic sewage. If the sewage is likely to contain unusual substances, please seek expert advice on 01296 633000.
(compliant with UK Building Regulations)
Population equivalent 6 9 12 18
Max. Daily BOD kg 0.36 0.54 0.72 1.08
Max. Daily Flow m3 1.2 1.8 2.4 3.6
Overall diameter mm  1995  1995  1995  2450 
Inlet Invert Depth mm  750 * 750 * 750*  600 ^
Depth Below Inlet Invert mm 1400 1400 1400 1820
Outlet Invert Depth mm  1315 1315 1315 1735
Overall Height mm 2160/2460/2960 2160/2460/2960 2160/2460/2960 2825/3325
Height to Rim of Cover mm 1945/2245/2745 1945/2245/2745 1945/2245/2745 2485/2985
Empty Weight kg 310/325/380 310/325/380 335/350/405 650/750
Standard Power Supply 1 Phase   1 Phase 1 Phase 1 Phase
Full Load Current - Single Phase -amps 0.51 0.51 0.51 1.1
Optional Power Supply 3 Phase 3 Phase 3 Phase 3 Phase
Motor Rating - Three Phase N/A N/A N/A 90
Full Load Current - Three Phase N/A N/A N/A 0.38
Sludge Return Pump Rating 250W 250W 250W 250W
Electrical Power Consumption KWH/Year 682.55 682.55 682.55 923.45
* Optional invert depths of 450mm and 1250mm are available.
^ Optional invert depth of 1100mm is available.
** Optional integral pump available in BA, BA-X and BB models.
All Spec Data Displayed Within Table Above - Correct as at 12/01/22
C20.7757 KS Premium Warranty Graphic

7 year warranty

Kingspan Klargester is delighted to launch our new 7 year extended warranty period* for the domestic BioDisc (BA-BB) treatment plant range.

Enjoy a premium level of protection and total peace of mind with your BioDisc purchase, from the trusted market leaders in Water Management Solutions.

Click here to regeister your Kingspan Klagester guarantee now.

Typical applications suitable for the Klargester BioDisc Domestic Sewage Treatment Plant

  • Single & Multiple Homes

  • Barn Conversion

  • Small Office Development

  • Stable Yard Toilet

  • Farms

  • Offices & Light Industrial Premises

Klargester BioDisc Domestic Sewage Treatment Plant

The Klargester BioDisc domestic sewage treatment plant is engineered to treat wastewater and offers affordable lifetime running costs. 

Utilising rotating biological contactor technology, the Klargester BioDisc is compliant with European standard EN 12566-3

Service and Guarantee

Frequently asked questions

A domestic wastewater treatment plant is essentially a system that can break down sewage so that is safe enough to be released back into the watercourse. Generally, domestic sewage systems are a kinder choice to the environment, and should be considered in the first instance as your primary choice for wastewater treatment, as opposed to installing a septic tank.
There are a whole host of benefits if you decide to invest in a domestic wastewater plant. These benefits include:
  • Environmentally friendly – domestic wastewater treatment plants use natural biological processes to break down sewage and safely process harmful compounds. This reduces pollution and is vital for protecting the local flora and fauna.Preserves your drainage field, unlike a septic tank which only holds solids and therefore the treatment occurs in the drainage field, leading to a high risk of ground pollution. The risk of a failed soakaway is much higher with a septic tank.
  • Safety – untreated sewage, or old sewage systems can release hazardous materials into your local watercourses.
  • A sewage treatment plant actually treats the wastewater and you can sample it to see whether it’s working correctly.
  • A long term solution - Most modern plants also have a long life-span, and are a solid investment for any property.
  • Efficiency – the overall treatment process is efficient at breaking down sewage and there is a far lower chance of suffering annoying blockages.
Domestic wastewater treatment involves letting the wastewater settle and then using an aerobic process, to allow bacteria to break down the sewage. This process helps purify the water, allowing it to either be rerouted back into the mains sewer system, or discharged safely and sensitively into the local environment.
In the UK, any unit going into the ground may require ‘consent to discharge’ from the local Environment Agency / SEPA office, even if you are using just a storage tank. Planning permission is required from the local Building Control department.
One of the most important factors in determining the choice of sewage treatment product is the site’s drainage properties. Both septic tanks and sewage treatment plants typically require a drainage field into which they discharge effluent. Testing the ground for its permeability is usually done by professional installer using a percolation test; the correct procedure is described in EN 6297:2007. Note: your property will need to be located on highly permeable ground if you want to install a septic tank otherwise the drainage field will fail. At least half the UK sits on a clay substrate, ruling this solution out and making a sewage treatment plant the only viable option.
The propensity of the site to flood and the height of the water table are also important considerations. Both H2 building regulations and EN 6297 state that the water table must be at least one metre below a septic tank outlet. In this instance, and if your property is in a flood risk area, you will need to install a sewage treatment plant.
Our wastewater treatment plants are designed so that maintenance is low level, however, it’s always recommended that a service engineer checks your domestic wastewater system every year. This ensures that your treatment plant continues to work well, and future-proofs it for many years to come.
We generally recommend that you allow a professional service engineer to install your domestic wastewater treatment plant. This will allow you to feel confident that the system has been correctly hooked up to the mains sewage system or directed out to the right channels. We also have a network of Kingspan Klargester accredited installers. If you would like us to put you in touch with a local installer, contact us on klargester@kingspan.com.
You can tell if your Klargester product is fully operational by arranging for a Kingspan Service engineer to attend site under an annual service agreement.
We would recommend that you contact our service team in reference to this and we can advise on best course of action to give peace of mind that your unit is fully mechanically and electrically operational.
If this happens we would recommend this be actioned as quickly as possible and our service team should be contacted to arrange a site visit or a tankering. This would help address and rectify the problem with a prompt and professional turn around.

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