Waikato Dairy Factory

Receiving over 5000 m3/d of dairy factory wastwater this treatment system, designed and built by BPO, produces a high quality effluent with less than 2 mg/L TSS, BOD and Total Nitrogen.


Using  sophisticated in-line monitoring, wastewater is segregated into high and low strength wastestreams. The high strength stream goes to the high rate anaerobic digester to remove the majority of the organic load.


The low strength stream and filtered decant from the digester go the multistage membrane bioreactor for final polishing and almost total removal of solids and nitrogen. 

89 Colombo Street

PO Box 5067, Frankton, Hamilton, New Zealand

570 Hillside Road,

Dunedin, New Zealand



T: +64 7 858 2101


T: +64 3 951 0240

AUS Free 1 800 751 806


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