恶草酮生产废水的化学氧化法处理研究  

Chemical oxidation treatment of oxadiazon wastewater

作　　者：边侠玲[1] 

机构地区：[1]安徽省化工研究院,安徽合肥230041

出　　处：《应用化工》2010年第8期1212-1214,共3页Applied Chemical Industry

摘　　要：对恶草酮生产废水处理的双氧水氧化工艺进行了研究，为解决恶草酮生产废水处理提供技术参考。结果表明，氧化前添加Ca（OH）2的效果优于NaOH，且Ca（OH）2的添加量在1％-3％（w／v）范围内，废水COD下降值基本相同，而超过3％（w／v）时，不降反增；在双氧水处理240min之内，废水的COD呈线性递减，而后几乎不变。采用优化的工艺：添加1％的Ca（OH）2预处理后，加入5％（v／v）H2O2氧化4h，并用适量Ca（OH）2控制pH为5，而后添加适量的活性炭；恶草酮生产废水的COD由38000mg／L降至18000mg／L左右，COD的去除率约为55％。Chemical oxidation treatment of oxadiazon wastewater was researched, and it provided the reference for oxadiazon wastewater treatment. The results showed that：the effect of adding Ca（OH）2 before oxidation was better than that of adding NaOH, and the decreasing numbers of COD were almost the same when the adding amount of Ca（OH） 2 was 1% -3% （w/v）. On the contrary, the COD will incvese when the dosage of Ca（OH） 2 is over 3% （w/v）. The COD of wastewater decreased with linear by H2O2 treatment for 240 min,then the COD was constant. The optimal condition was that add 1% Ca（OH）2 in pretreatment stage,oxidation by 5% （v/v） H2O2 for 4 h,and pH is 5 by adding Ca（OH）2 ,then add some activated carbon. Under above conditions, the COD of wastewater decreased from 38 000 mg/L to 18 000 mg/L and the removal rate of COD was 55%.

关 键 词：恶草酮生产废水 预处理 化学氧化 工艺优化 

分 类 号：X172[环境科学与工程—环境科学]