Project Detail
The Problems :
- 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 35 cm in the intestine. The nematode can prove to be fatal. The infectious eff (40 um) must be removed from the wastewater to allow it to be used for irrigation
Technical Solution:
- AFM® – Activated Media Filtration with coagulation, implementing a filter with 1600 mm diameter
- AFM® filter auto-cleaning with a combination of backwash water and air scouring
