钢铁工业高盐废水来源及零排放技术对比  

High-salt wastewater sources in steel industry and comparison on zero-discharge technologies

作　　者：杨本涛 冯哲愚 叶恒棣[1,2] 魏进超 刘彦廷[1,2] YANG Bentao;FENG Zheyu;YE Hengdi;WEI Jinchao;LIU Yanting(Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410205,Hunan,China;National Engineering Research Center of Sintering and Pelletizing Equipment System,Changsha 410205,Hunan,China)

机构地区：[1]中冶长天国际工程有限责任公司,湖南长沙410205 [2]国家烧结球团装备系统工程技术研究中心,湖南长沙410205

出　　处：《烧结球团》2022年第4期77-82,共6页Sintering and Pelletizing

基　　金：长沙市科技领军人才(kh2005005);高新技术产业科技创新引领计划(2020GK4095)。

摘　　要：随着钢铁工业的绿色发展,氯元素处置的问题开始凸显,其最终变为高盐废水的处置问题。本文系统梳理了钢铁工业高盐废水的主要来源及特征,并详细对比高盐废水零排放处置技术中冲渣法、烟道余热蒸发法、蒸发结晶分盐法的优缺点。结果表明,高盐废水主要来源于工序环保设施产生的副产物、生产提质及含盐固废的预处理;在不返回生产工序和回用的前提下,蒸发结晶分盐法能够有效地回收氯资源,不产生二次污染,但应重点关注成本高和堵塞问题。本文研究结论可为钢铁工业高盐废水的减排提供重要依据。With the green development of the iron and steel industry, the problem of chlorine element disposal starts to be highlighted, which eventually becomes the disposal of high-salt wastewater.The main sources and characteristics of high-salt wastewater in the iron and steel industry are systematically sorted out, and the advantages and disadvantages of the slag flushing method, the flue waste heat evaporation method, and the evaporative crystallization salt separation method in the zero-discharge treatment technology of high-salt wastewater are compared in details.The results show that the high-salt wastewater mainly comes from by-products produced by environmental protection facilities in the process, production upgrading and pretreatment of salt-containing solid waste;on the premise of not returning to the production process and recycling, the evaporative crystallization and salt separation method can effectively recover Chlorine resources without secondary pollution, but problems of high cost and clogging should be focused on.The research conclusions can provide an important basis for the emission reduction of high-salt wastewater in the iron and steel industry.

关 键 词：高盐废水 来源及特征 零排放技术 

分 类 号：X703.1[环境科学与工程—环境工程] TF089[冶金工程—冶金物理化学]