NPS Wastewater Systems Ltd.

Burnaby BC  Canada



(Click here to download detailed CA Series brochure in Acrobat PDF format)


TheNPS Batch-Treat CA Series Systems have five biological treatment zones:

  • Solids Retention Zone (A)  to hold sewage until it is broken down for treatment.
  • Aeration Zone (B) to supply oxygen to the aerobic organisms. 
  • Settling Clarifier (C) where suspended solids settle out of the final effluent.
  • Effluent Discharge Zone (D) that is pumped to the disposal field after the settling period.
  • The Reserve Volume Zone (E) which acts as a buffer to absorb large inflows of sewage without affecting the Batch-Treat process.


               Standby Cycle                                    Inflow Cycle    


               Aeration Cycle                                   Settling Cycle


NPSBatch-Treat Systems....Wastewater treatment for Cottages, Homes, Duplexes,Apartment Blocks.

      (Clickhere todownload detailed CA Owners Manual in Acrobat PDF format)



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