高盐脱硫废水零排放工程实例分析  

Case Analysis of Zero Emission Project for High-Salt Desulfurization Wastewater

作　　者：洪洲舟 吴财松 闫虎祥 李超 蒋国民 HONG Zhouzhou;WU Caisong;YAN Huxiang;LI Chao;JIANG Guomin(Sainz Environmental Protection Co.,Ltd.,Changsha 410013,China;China Nonferrous Metals Industry Pollution Control and Equipment Engineering Technology Research Center,Changsha 410083,China;Hunan Nonferrous Metals Industry Heavy Metal Pollution Control Technology and Equipment Engineering Technology Center,Changsha 410013,China)

机构地区：[1]赛恩斯环保股份有限公司,长沙410013 [2]中国有色行业污染治理与装备工程技术研究中心,长沙410083 [3]湖南有色行业重金属污染治理技术与装备工程技术中心,长沙410013

出　　处：《中国资源综合利用》2024年第3期200-203,共4页China Resources Comprehensive Utilization

摘　　要：有色金属冶炼行业烟气洗涤会产生大量废液,它含有大量盐分,重金属含量高,成分复杂。某钼冶炼企业采用“生物制剂深度处理+膜分离+蒸发”工艺处理硫酸车间的两股含盐废水,新建工程设计处理规模为100 m^(3)/d。项目运行结果表明,净化废水经反渗透浓缩后与高盐的干吸废水进入机械式蒸汽再压缩器(Mechanical Vapor Re-compression,MVR)蒸发,产出的钠盐妥善处置,膜淡水、蒸发冷凝水满足企业回用水要求。本套工艺消除高盐生产废水排放带来的环境污染风险,做到零排放,为类似废水提供处置经验。The flue gas washing in the non-ferrous metal smelting industry produces a large amount of waste liquid,which contains a large amount of salt,high heavy metal content,and complex components.A certain molybdenum smelting enterprise adopts the process of"biological agent deep treatment+membrane separation+evaporation"to treat two streams of saline wastewater in the sulfuric acid workshop,and the designed treatment scale of the new project is 100 m^(3)/d.The project operation results show that the purified wastewater is concentrated through reverse osmosis and then combined with high-salt dry suction wastewater to enter the Mechanical Vapor Re-compression(MVR)for evaporation,and the produced sodium salt is properly disposed,and the fresh water from the membrane and evaporative condensate meet the requirements of the enterprise's reuse water.This set of processes eliminates the environmental pollution risk caused by the discharge of high-salt production wastewater,achieves zero emission,and provides disposal experience for similar wastewater.

关 键 词：含盐废水 生物制剂 反渗透 机械式蒸汽再压缩(MVR)蒸发 零排放 

分 类 号：X758[环境科学与工程—环境工程]