光催化和微滤处理有机磷农药废水

目的]针对光催化处理有机磷农药废水工艺中,有机磷降解生成无机磷,无机磷会导致水体富营养化以及催化剂分离难问题,将陶瓷膜微滤与光催化相结合来处理有机磷农药废水。方法]将膜微滤过程引进光催化降解有机磷废水处理工艺中,通过膜的截留特性回收催化剂、降低PO43-含量,同时对微滤过程的操作参数进行了优化。结果]微滤促进了除磷效果,消除了二次污染,改善了出水水质,有利于催化剂的分离回收。光催化和微滤处理有机磷废水,PO43-去除率达99.1%,CODCr去除率达91.8%,远高于单独光催化或单独微滤的结果。当操作压差为0.10 MPa,流速为5 m/s,膜通量达230 L/（m2.h）。结论]采用光催化-微滤组合工艺处理有机磷农药废水是一个行之有效的方法。

Treatment of Organic Phosphorus Pesticide Wastewater by Photocatalysis and Microfiltration

Objective] The method of ceramic membrane microfiltration combined with photo-catalytsis was experimented in the treatment of the wastewater containing organic phosphorus pesticide because the inorganic phosphorus,which was produced from the treatment of the wastewater containing organic phosphorus pesticide with photo-catalytic degradation method,resulted in the eutrophication of water-body and the difficulty decomposition of catalyst.Method] The procedure of micro-filtration was introduced into the degr...