Small sewage
treatment system

small sewage treatment system

The Allerton Mini Biofilter

The Allerton Mini Biofilter is a small sewage treatment system ideal for individual homes or small commercial sites. Producing high quality effluent, this biofilter discharges direct to your watercourse or soakaway.¹

The Allerton Mini Biofilter is available in two models, the 6PE and 10PE. Typical uses for these sewage treatment systems are:

  • 6PE: 6 person system for 3 bed houses and 4 bed houses
  • 10PE: 10 person system for larger single houses or 2 x 3 bed houses

Why use the Allerton Mini Biofilter small sewage treatment system?

  • Ideal for individual homes or small commercial sites.
  • BBA certified and manufactured in accordance with our BS EN ISO 9001:2008 quality management system.
  • Produces high quality effluent 20mg/l BOD and 30mg/l SS.
  • Optional gravity or pumped outlet.
  • 3 year warranty on all working parts.
  • Low maintenance costs, 6PE Service and Desludging once a year, 10PE every six months, Installation, sewage servicing and sewage maintenance available.

How our small sewage treatment system works

See illustration to the right.² Raw sewage flows by gravity into the first stage of the primary settlement zone (5) of the Allerton Mini Biofilter. Here, the solids settle out leaving the liquid to pass through to the second stage (6) for further settlement before reaching the irrigation zone (7).

The effluent is then pumped (9) into the distribution system (1) and sprayed uniformly across the media (2), where it slowly drains through the media bed. The effluent is recycled many times through the media to achieve the necessary standard.

Finally, the fully treated effluent is pumped or gravitates to a watercourse or soakaway via the integral sample chamber (4).

¹Discharge to watercourse or soakaway is subject to consent from the relevant authorities. ² Allerton Mini Biofilter illustration is not drawn to scale.

small sewage treatment system illustration
  1. Distributor
  2. Media
  3. Outlet
  4. Sample Chamber
  5. Primary Zone
  6. Primary Zone Second Stage
  7. Irrigation Zone
  8. Inlet
  9. Irrigation Pump

Alternative sewage treatment systems

Download our small sewage treatment
system specification

Servicing and maintenance


Dimensions

small sewage treatment system diagram
small sewage treatment system diagram
small sewage treatment system diagram
small sewage treatment system dimensions
UNIT GRAVITY PUMPED
P/E 6 6
(A) INLET 1375 1375
(B) DEPTH 2900 2900
(C) OUTLET 1425
(D) OUTLET 400
(E) DIAMETER 1800 1800
small sewage treatment system dimensions
small sewage treatment system diagram
small sewage treatment system diagram
small sewage treatment system diagram
small sewage treatment system dimensions
UNIT GRAVITY PUMPED
P/E 10 10
(A) INLET 1275 1275
(B) DEPTH 2900 2900
(C) OUTLET 1325
(D) OUTLET 400
(E) DIAMETER 1800 1800
small sewage treatment system dimensions

Allerton reserves the right to alter the Allerton Mini Biofilter specifications and dimensions without notice.

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