At present, the conventional dosing-coagulation-sedimentation-biochemical treatment process is difficult to achieve the purpose of purification, and it is difficult to eliminate odor and chromaticity, and the effluent quality can not meet the national discharge standard. There are some problems in the double-membrane method, such as difficult treatment of concentrated solution. Landfill leachate is a kind of high-concentration organic wastewater with complex components produced by microbial decomposition, rainwater leaching and long-term immersion of surface water and groundwater during the accumulation of municipal solid waste in landfill.
The landfill leachate was treated by new technology, non-membrane treatment, SN coupled oxidation+biochemical treatment+advanced treatment. This process degrades heavy metals and toxic organic substances, improves biodegradability and biochemical efficiency, and directly discharges landfill leachate after treatment combined with our advanced treatment technology.