Klargester BioDisc Domestic Sewage Treatment Plant

In an increasingly regulated world, it is more important than ever to choose a compact sewage treatment plant which delivers safe and reliable treatment of wastewater.

For NIEA, Klargester BioDisc BA-BC models deliver 95% pollution removal, whilst the Klargester BioDisc+P achieves 97.8% BOD removal. The BA BioDisc is also S.R.66:2015 compliant.

Ideal for domestic dwellings without access to mains drainage, the Klargester BioDisc® domestic sewage treatment range provides a reliable, efficient and environmentally safe solution to your sewage disposal needs.
BioDisc Cutaway - RGB

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Product Information

Key Benefits
Technical Information

​Features and benefits

  • Lowest running and maintenance costs of sewage treatment models in its class
  • For NIEA, BA-BC models deliver 95% pollution removal, whilst the Klargester BioDisc+P achieves 97.8% BOD removal.
  • No noise, no 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
  • 10 year extended warranty (bond) available
  • The BA BioDisc is also S.R.66:2015 compliant.

How the Klargester BioDisc® Works

Assured Performance

The Klargester BioDisc® is a high performance sewage treatment plant which, in normal domestic situations, will produce effluent qualities of better than 8mg/l BOD, 13mg/l SS and 4mg/l ammonia.

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 consult Kingspan for expert advice on 01296 633000.

(compliant with UK Building Regulations)
Population equivalent 6 9 12 18
Max. Daily BOD kg 0.36   0.72 1.08
Max. Daily Flow m3 1.2   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
Motor rating - Single Phase 50W  50W  50W  75W 
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.
Typical Applications for the Klargester Domestic BioDisc product range:
  • Single/Multiple Homes
  • Barn Conversion
  • Small Office Development
  • Stable Yard Toilet
  • Farms
  • Offices & Light Industrial Premises

Useful Documents

Klargester Biodisc Domestic Brochure

Klargester Product Guide

Klargester Guide to Selfbuild

BioDisc+P PIA certificate

SR66:2015 Compliant

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