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12 Person BB Klargester Biodisc Sewage Treatment Plant w/450mm inlet (Gravity)

Regular price
£6,182.00 (£5,151.67 ex VAT)
Regular price
Sale price
£6,182.00 (£5,151.67 ex VAT)
Est. delivery: 5-7 working days

Unit Size : BB

Population Equivalent : 1 House up to 9 bedrooms Specification:
Model: BB
Population Equivalent (Standard Flow): 12
Maximum Daily BOD (kg): 0.72
Maximum Daily Flow (m3): 2.4
Diameter (mm): 1995
Invert Depth Options (mm): 450
Depth Below Inlet Invert (mm): 1400
Outlet Invert Depth (mm): 1315
Overall Height (mm) Depending on Invert: 2160
Height to Rim Of Cover (mm) Depending on Invert: 1945
Empty Weight (Kg): 310
Standard Power Supply: 1 phase
Motor Rating (Watts): 50
Full Load Current 1 Phase (amps): 0.51
Sludge Return Pump Rating (watts): 250


  • The Klargester BioDisc operates without noise or smell
  • Servicing requirements are reduced with very good access
  • No technical or mechanical faults
  • Low energy usage at 1.3 kw/d - approx 10-14 pence per day
  • Low sludge accumulation and sizeable storage capacity
  • Certified to European Standard EN 12566 - Part 3 - Annexe B - Performance Tests
  • The unique design of the system means that the Klargester BioDisc¶ù is the only packaged sewage treatment system utilitising Rotating Biological Contactor technology for small domestic applications. This process offers inherent cost and performance benefits with a low carbon footprint.
The Klargester BioDisc has the lowest running and maintenance costs of any packaged treatment plant in its class. An important design feature is the drive motor which runs virtually silently, has low power consumption and a significantly greater design life expectancy than a typical compressor. Low running costs, combined with the quality and durability of the equipment, all add up to a significantly lower lifetime cost.

Full Description

For residential properties without access to mains drainage, the Klargester BioDisc delivers a reliable, effective and ecologically safe solution to your sewage disposal needs.

BB BioDisc – suitable for 1 house upto 8 bedrooms

The Klargester BioDisc is ideal for areas where discharge is to sub-surface irrigation or to a suitable watercourse if permitted. The Rotating Biological Contractor is unique to the BioDisc, and comprises of media discs onto which aerobic micro-organisms, naturally found in sewage, become established. Natural breakdown of sewage can then occur via the ‘breakdown process’:

Wastewater and sewage flows into the primary settlement zone 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 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 for further treatment.
Any solids remaining are settled out in the final settlement tank. The resulting very high quality effluent can be discharged to a watercourse.

Technical Specification

No. of people: 12

Outlet: Gravity

Installation Service

We can also offer an installation service for our stormwater attenuation, rainwater harvesting, water storage and sewage treatment solutions. Get in touch here.

Contact Us

Our team of experts are available and ready to speak to you. You can contact us or call us directly on 0121 351 3230. Available Mon-Friday 8am-5pm.

Further questions?

Our team of specialists are here to help. We install many of our products so can provide real-world advice. We also offer a free take-off service if required.

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