UniFED: wastewater treatment process

UniFED™ is an advanced wastewater treatment process, used through retrofit of existing systems or by new construction, to treat sewage including the removal of nutrients to very low levels meeting most EPA requirements. Current evaluations suggest tenfold reduction in capital (for retrofitting) and reduced operating costs in comparison to other currently available technology.

UniFED is an exceptionally robust and affordable wastewater treatment process which removes nutrients from sewage to the very low levels required for environment protection in Australia. UniFED can be built into new sequencing batch reactor sewage systems or readily retrofitted to existing systems.

This advanced biological nitrogen removal (BNR) technology offers impressive technical and commercial advantages over other wastewater/BNR treatment processes. Carbon, nitrogen and phosphorus are removed in a simple, single-tank operation using advanced PLC control without using clarifiers, digesters or additional tankage for anoxic/anaerobic treatment. Capital and operating costs are significantly lower, and the decant systems are being further simplified to reduce costs even further. Retrofitting (at an estimated 10% of the cost of system replacement) delivers improved phosphorus and nitrogen removal.

UniFED optimises the metabolism of phosphorus through controlled distribution of incoming sewage. Aeration, settling, inflow and decant are operationally controlled to optimise the use of carbon for phosphorus and nitrogen removal. Low discharge levels help reduce local eutrophication. The process can be adapted for abattoir and food/beverage industrial wastewater.

UniFED was developed by CRC for Waste Management and Pollution Control Limited – a cooperative R&D organisation including the Advanced Wastewater Management Centre (University of Queensland), NSW Public Works and Services, Sydney Water Corporation and University of New South Wales. IP is protected worldwide.