NITing-ting,WANGYun-zhong,WUYong-ming,et al.Case of Wet Flue Gas Desulfurization Wastewater Treatment Project[J].China Water & Wastewater,2022,38(4):109-113.
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Case of Wet Flue Gas Desulfurization Wastewater Treatment Project

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第4期 Page: 109-113 Column: Date of publication: 2022-02-17
Author(s):
NI　Ting-ting1;  WANG　Yun-zhong1;  WU　Yong-ming2;  HU　Ling-ling3;  YANG　Chun-yan2;  DENG　Mi2
（1. Qingdao Haijian Energy Conservation and Environmental Protection Co. Ltd.， Qingdao 266235， China； 2. Jiangxi Academy of Sciences， Nanchang 330096， China； 3. Jiangxi Water Resources Monitoring Center， Nanchang 330000， China）
Keywords:
desulfurization wastewater;  wet limestone-gypsum;  chemical precipitation method;  coagulation sedimentation
Abstract:
The desulfurization wastewater generated by the waste residue treatment system of the limestone-gypsum flue gas desulfurization (FGD) process in a thermal power plant is treated by chemical precipitation process. After one year of operation, the technology is found reliable and stable. The removal rates of SS, COD, fluoride, mercury and sulfate reached 99.5%, 98.3%, 87.5%, 99.8% and 85.6% respectively, and the corresponding effluent concentrations were 54 mg/L, 20 mg/L and 9.6 mg/L, 0.04 mg/L, 980 mg/L. Finally, the effluent quality of the system is no less than the requirements of Discharge Standard of Wastewater from Limestone?gypsum Flue Gas Desulfurization System in Fossil Fuel Power Plants (DL/T 997-2006). In addition, the total cost of electricity and chemical is only 6.65 yuan/m3.
Last Update: 2022-02-17