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  • £2,255.00 ex. VAT
  • £2,706.00 inc. VAT
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Description

The new Klargester BioAir 4 Economy sewage treatment plant is suitable for properties up to and including 10 bedrooms. The BioAir uses proven aerated technology to deliver a high-level water quality. As well as being suitable for domestic properties, the BioAir 4 with a PE of 12 persons is also suitable for small commercial applications.

Choosing the right sewage treatment plant is important, as in the case of a property alteration or extension, Building Control will strongly advise for a plant which is suitable for handling the increased flows and loads of the new development.

BioAir Economy Units are supplied with an isolator and failure light. The Isolator with power failure light (in the blower box) can be mounted externally at a point where it is easily visible from the property. But the failure light is not as prominent as a beacon, supplied with the BioAir Premiums Control Panel. 

 

Key Benefits of the BioAir 4:

  • Shallow dig design makes installation easier in hard or solid ground
  • Low-level visibility with a lockable child-proof cover
  • Manufactured from GRP
  • Can be used in trafficked areas - subject to structural design advice (by others)
  • CE Marked and Complies with EN 12566-3
  • Improved effluent quality over the previous model
  • Available as either gravity or pumped outlet (IPS) option
  • Remote blower for easy servicing
  • Supplied with isolator switch

 

Specification:

Model Number: BioAir 4 Economy
Max. Number of Full-Time Residents (PE): 12
Daily Flow (m3/d): 1.8
BOD Load (kg BOD5/d): 0.72
Weight when Empty (kg): 500
Overall Diameter (mm): 1920
Length (mm): 3238
Height Standard Invert (mm): 2245 - 3745
Inlet Invert (mm): 500 - 2000
Outlet Invert (mm): 600-2100
Drainage Connections (mm): 110
Warranty (if registered) (yrs): 1
Material Construction: GRP

 

Options:
 
Gravity or Integral Pumped System (IPS):
 
Gravity is the standard no-cost option, however where the inlet to the watercourse or soakaway is higher than the outlet of the treatment plant you will require the optional Integral Pumped System (IPS) as this will pump the wastewater uphill and into your discharge point. Depending upon site conditions the IPS system will pump from 1.0m head up to a distance of 200m or a maximum of 6.0m head with a distance of 15m - Please contact us on 0800 0568 350 should you require more information on the IPS and its capabilities.
 
Invert Depth:
 
The standard invert depth is 500mm however, where a deeper invert is required there is the option of adding risers to increase it to a maximum of 2.0m for both gravity or IPS systems. 
 
 
Installation:
Full instructions and dimensions can be downloaded from our Product Data.
 
Delivery:
FREE delivery of this product includes the whole of the UK Mainland (including Scotland) and is subject to suitable access for a large goods vehicle. This product is delivered to the kerbside. It is the customers responsibility to provide suitable mechanical offloading facilities (eg. JCB excavator or loader) to offload this tank or alternatively, you can select the cost option of a hi-ab offload.
 
If you need any assistance please contact us on 0800 0568 350 prior to purchase - please remember we are here to help! 

 

 

 

Sunday 5th April 2026
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