关键词: 渗滤液, 膜浓缩液, 预处理, MVR强制循环蒸发结晶, 母液干化, 杂盐

Abstract: The treatment project of leachate membrane concentrate in a domestic waste landfill in Jiangxi Province was taken as a case， the technical advantages and application prospects of pretreatment + MVR forced cycle evaporation crystallization + mother liquid drying were expounded. The practical engineering showed that the technology could effectively reduce hardness， CODCr and other indexes. Moreover， inorganic miscellaneous salts such as Na+， K+ and Cl- could be formed into crystals and extracted from the system. The treated effluent water quality stably meet the requirements of the emission limits of table 2 in the GB 16889—2008 Standard for Pollution Control on the Landfill Site of Municipal Solid Waste. The moisture content of the mother liquid was reduced by 75.9 percentage points after drying treatment， achieved the purpose of reducing the waste quantity to reduce the cost of external transportation. After more than one year of formal operation， the performance indicators of this case were good， and the technology could be applied to the treatment of membrane concentrate.

Key words: leachate, membrane concentrate, pretreatment, MVR forced cycle evaporation crystallization, mother liquid drying, miscellaneous salt