机械加工脱模剂废水处理工程实例

从废水水质特性、处理工艺分析、设计参数、处理效果及运行成本等方面,介绍了江苏某机械加工厂的废水处理工程。工程实践表明,采用隔油—混凝气浮—混凝沉淀—UASB—生物接触氧化—砂滤组合工艺可有效处理脱模剂废水,工程调试运行后,COD、SS、石油类的去除率都达到90%以上,最终出水水质稳定且均达到《污水综合排放标准》(GB 8978—1996)三级标准要求。

Case study on the treatment of wastewater containing mold release agent from machinery processing

A wastewater treatment p roject of a machinery processing factory in Jiangsu Province is introduced from the angles of wastewater quality characteristics,treatment process analysis,design parameters,treatment effects, running costs,etc.. The project practice shows that using the combined process,oil separation-air floatation-coagulation precipitation-UASB-biological contact oxidation-sand filtration ,can effectively treat the wastewater containing mold release agent. After the debugging and operation,the removing rates of COD,SS and oils are all above 90%. The final effluent water quality is stable ,meeting all the requirements for the third-level standard specified in the Integrated Wastewater Discharge Standard(GB 8978—1996).