摘要
采用湿式氧化法对乐果生产废水进行预处理，氧化温度２３０～２４０℃，压力６．０～７．０ＭＰａ，废水停留时间１ｈ。在此条件下，有机磷的去除率可达９５％以上，有机硫的去除率可达８２％。废水经湿式氧化、回收磷酸盐后再经生化处理，保持ＣＯＤ与有机硫的比值大于２５１，ＣＯＤ去除率可达９０％。
In the pretreatment of wastewater from dimethoate production by wet oxidation process,the removal efficiencies of organic phosphorus and organic sulphur can come up to over 95% and 82% respectively under the conditions of 230～240℃ of temperature,6.0～7.0MPa of pressure and 1 h of retention time.After recovery of phosphate,the pretreated wastewater is then treated by biological process with 90% of COD removal under the condition of over 25∶1 of COD/organic sulphur ratio.
出处
《化工环保》
CAS
CSCD
北大核心
1999年第1期6-11,共6页
Environmental Protection of Chemical Industry
关键词
乐果生产
废水处理
湿式氧化
磷酸盐
生化处理
dimethoate production wastewater,wet oxidation,phosphate recovery,biological treatment.
