合成化工高盐废水的零排放工艺设计及研究  

Design and Study on Zero Emission Technology for High Saline Wastewater of Synthetic Chemical Industry

作　　者：余海晨[1,2] 钟沛文[3] 高玮[1,2] 胡瀚[3] 赵建全[2] 曾猛[1,2] 

机构地区：[1]天津市环境保护科学研究院,天津300191 [2]天津市联合环保工程设计有限公司,天津300191 [3]天津理工大学环境科学与安全工程学院,天津300384

出　　处：《城市环境与城市生态》2013年第1期44-46,共3页Urban Environment & Urban Ecology

基　　金：国家自然科学基金(NSFC-51178311)

摘　　要：针对某合成化工厂产生的含高浓度硝酸铵废水,设计了一套零排放处理工艺。该工艺首先对废水进行絮凝沉淀和过滤,去除重金属Cu2+后,采用机械蒸汽再压缩(MVR)技术对其进行蒸发浓缩,至硝酸铵浓度≥30%。浓缩液可作为化肥企业的生产原料。MVR冷凝水经膜过滤系统处理后,TDS≤50mg/L,回用至生产过程。Zero-emission treatment process for the ammonium nitrate wastewater from a synthetic chemical factory was designed. In a pretreatment section the heavy metal iron （Cu2＋ ） in the wastewater was removed through flocculation sedimentation and filtration. After that, the wastewater was concentrated with a mechanical vapor recompression （MVR） system. With further treatment through a membrane filtration system, the condensed water was reused in the production procedure of the factory. The remaining concentrated wastewater could reach an ammonium nitrate concentration of above 30% and could be used as the raw material for fertilizer production.

关 键 词：合成化工高盐废水 机械蒸汽再压缩技术(MVR) 反渗透(RO) 零排放 

分 类 号：X703.1[环境科学与工程—环境工程]