|Company:||Kaipara District Council|
|Location:||Mangawhai, New Zealand|
|Description:||Tertiary Effluent Filtration|
Remove parasitic Helminth
|Water Source:||Municipal effluent|
- Mangawhai is a water-surrounded popular tourist resort, on New Zealand’s east coast.
- Its population grows considerably during the summer months, and septic tank effluent was causing poor water quality in the harbour.
- The wastewater contained a high concentration of the parasitic nematode Ascaris spp. The worm infects the blood, lungs, internal organs and can grow up to 35cm in the intestine. The nematode can prove to be fatal. The infectious egg (40 um) must be removed from the wastewater to allow it to be used for irrigation.
|Items||Existing Values||Required Value|
|Turbidity (NTU)||Up to 50||< 5|
- AFM® - Activated Media filtration with coagulation, implementing a filter with 1600mm diameter.
- AFM® filter auto-cleaning with a combination of backwash water and air scouring
|Items||Existing Values||Required Values||After Treatment|
|NTU||Up to 50||<5||<2|
During the period no nematode eggs were detected in the product water from the AFM filters.
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