低浓度二甲醚生产废水的处理与回用

Treatment and reuse of low-concentration wastewater from DME production

采用串联自循环活性污泥法+混凝沉淀+过滤+ClO2消毒工艺处理低浓度二甲醚生产废水,工艺运行稳定,操作维护简便,出水达到《工业循环冷却水处理设计规范》(GB 50050—2007)再生水水质指标,全部用于循环冷却水补水,具有良好的经济效益和环境效益。

The process in series, self-circulation activated sludge process ＋coagulation sedimentation ＋filter＋CIO2 disinfection, has been used for treating the low-concentration wastewater from DME production. This process is cha racterized by stable running, as well as convenient operation and maintenance. Its effluent reaches the quality index es of regenerated water of ＂Industrial Circulating Cooling Water Treatment Design Specification＂ （GB 50050 2007）, and can all be used as circulating cooling makeup water, having good economic and environmental benefits.