Project: Electrochemical Oxidation of Landfill Leachate
Jan ’02 to Jan ‘03
Landfill leachate is not easily treated and receiving WwTWs are at risk of ammonia,
COD and metal consent failures.
Severn Trent commissioned WatStech
Ltd. to assess the mechanisms of reactions within a novel electrochemical process. A laboratory scale unit was developed with
Advanced Oxidation Ltd. and the performance evaluated with synthetic and real landfill leachates received at two of Severn
Trent’s wastewater sites.
Power costs for treatment
were up to 60% lower than alternative electrochemical methods but issues with treatability following electrochemical were
identified during the project. This allowed Severn Trent to make an informed decision for future investment,
based on balancing the risk to effluent consent compliance against the power savings (see paper).