Onsite sewage treatment, reducing BOD by 96%
The challenge
Protecting the beautiful white sandy beaches, vibrant reefs and pristine waters around this resort was a high priority given the owner’s commitment of responsible tourism. A variety of wastewater treatments such as absorption pits and aerated trickling filters had been trailed, with unacceptable results.
The solution
A BioGill system was installed to treat 14,000 litres (3,590 gallons) of wastewater each day from the kitchen, laundry, showers and composting toilets. The BioGill system produces a high standard of treated water which is reused on the gardens around the island.
The results
Independent testing from The National Water Quality Laboratory Suva has reported impressive results from the BioGill system installed on the island.
High-load sewage, rich in oils from a commercial kitchen with an average BOD of 662 mg/L was reduced to an average BOD of 25 mg/L (96% removal efficiency).
The total nitrogen was reduced on average from 112 mg/L to only 24 mg/L (79% efficiency) in a simple to operate and inexpensive system which also generates reuse water for the resort’s gardens.
