Incineration is an effective technology for municipal solid waste (MSW) disposal.However

the MSW leachate after bio-treatment still contains recalcitrant organic compounds

higher concentration of chloride ions and biogenic colloids.Their electrochemical oxidation was conducted in a newly designed filter-press electrochemical reactor.In the electrochemical oxidation process

NH3-N could be easily removed by means of electro-generated chlorine/hypochlorite.The effects of major process parameters on the removal of organic pollutants were investigated systematically.Under experimental conditions

the optimum operation parameters are current density 65.35 mA穋m-2

flow velocity 2.72 cm穝-1 in electrode gap

initial chloride ion concentration 5000 mg稬-1.The COD in the leachate could be reduced below 100 mg稬-1 after 1 h of treatment.The kinetics and mechanism of COD removal were investigated by simultaneously monitoring the COD change and chlorine/hypochlorite production.The kinetics exhibits a two-stage kinetic model and the decrease of electro-generated chlorine/hypochlorite production is the major factor for slowing down of COD removal rate in the second stage.50% of reduction in electrode gap can result in saving more than 25% of energy consumption.A compact multi-channel bipolar structure should be taken in the design of industrial electrochemical reactors for wastewater treatment.