Application of Landfill Leachate Membrane Concentrated Liquid Treatment Technology
In view of the difficulties in the disposal of membrane concentrate in a landfill leachate treatment plant in Northeast China,a series of experiments were carried out to find an appropriate treatment process.Through the combination of pretreatment,tubular ultrafiltration membrane,material membrane,DTRO,low temperature evaporation and other technologies,to achieve the standard discharge of produced water and meet the needs of plant reuse.The results show that the combined process of"softening and dehardening+tubular ultrafiltration membrane+material membrane+DTRO reduction+low temperature evaporation"has certain stability and feasibility.The recovery rates of material film,DTRO and low temperature evaporation are controlled as 98％,85％and 80％respectively,and the operating pressure is relatively low.The amount of chemical sludge produced by softening and removing hardening is 3.3 kg/t water.The results can provide reference for the treatment of landfill leachate membrane concentrate.
landfill leachatemembrane concentratemembrane treatmentlow temperature evaporatorpretreatment
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