Experimental study on concentration treatment process of desulfurization waste water in coal-fired power plant
WEI Mingbo
HU Xi
YANG Wanqiang
TENG Jilin
Abstract：In order to reduce the processing cost of zero-discharge of desulfurization waste water from coal-fired power plant,through the experiment in this paper,the technical feasibility of process in concentrating desulfurization waste water throuth pretreatment of softening and tubular ultrafiltration and DTRO and evaporation and crystallizationby experiment were studied,the key operation of each process parameter were explored.The experimental results showed that the pretreatment of lime,pH varying from 10.5 to 11,magnesium ion removal effect was good,and it could remove most of heavy metals and lluoride,The anti fouling performance of tubular ultrafiltration and DTRO was better,and the waste water could be reduced and the recovery rate was controlled between 65％ and 70％,and the system could be operated stably,concentrated water could be entered the evaporation and crystallization,the evaporation of water was reduced by 50％-60％,and the investment and operation cost were reduced to a certain extent.
Keywords：desulfurization waste watertubular ultrafiltrationdisk-tube reverse osmosimembrane concentrationevaporation and crystallizationzero discharge
Publication Date：2017-01-01