Phase one incorporated the penguin, seal, and chimp enclosure, where we collect waste water from the enclosures, remove solids and control flows.  After treatment the water is then discharged to Environment Agency approved standards. 

Phase two of the scheme involved the redevelopment of the hippopotamus enclosure which comprises four connecting pools. Waste from these will be screened and go through a treatment plant, installed by Alpheus.  After passing through the plant, the solids will then travel through a series of terraced reed beds, and then on into a soakaway. The treated water is then recirculated back to the pools, creating a continuous treatment process.