蒸汽再压缩技术回收废水中氯化铵的工程实例

摘要

High ammonia-n wastewater in the production of chemical pesticide products has characteristics of biological toxicity and poor biodegradability, was refractory organic wastewater. Mechanical Vapor Recompression technology was used to manage high ammonia-n wastewater in amination reaction production, and recycle rich contains ammonium chloride crystals and implemente minimizing wastes and emissions. The analysis of the wastewater pretreatment plant operation showed that the technology was a "source governance"-"waste resource recovery" mode of wastewater treatment, had environmental and economic co-benefits.%在化工农药产品生产中产生的高氨氮含量废水，具有生物毒性大，可生化性差等特点，属较难降解有机废水。本文利用机械式蒸汽再压缩技术处理某胺化反应产生的高氨氮废水，回收富含的氯化铵晶体，实现了废弃物资源化以及排放量最小化。此废水预处理装置运行结果分析表明，该技术属“源头治理”-“废弃物资源化”的废水治理模式，具有环境-经济双重效益。