废次氯酸钠废水中磷的去除  

Removal of Phosphorus from Sodium Hypochlorite Wastewater

作　　者：崔洪升[1] 

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300074

出　　处：《中国给水排水》2015年第14期108-111,共4页China Water & Wastewater

摘　　要：对以某生产聚氯乙烯化工厂的废次氯酸钠废水进行试验,结果表明,次氯酸钠可将90%以上的亚磷酸盐氧化为正磷酸盐;氧化反应最佳p H值为4;氧化反应时间为30 min。将亚磷酸盐氧化为正磷酸盐后,利用传统的化学沉淀法除磷,出水可回用作为新鲜次氯酸钠溶液的复配水。The sodium hypochlorite wastewater from polyvinyl chloride production process of a chemical plant was tested. The results showed that after adding the sodium hypochlorite, more than 90% phosphite was oxidized into orthophosphate ; the optimal pH of oxidation reaction was 4, and the reaction time was 30 rain. After oxidation from phosphite into orthophosphate, phosphorus was removed by tradi- tional chemical precipitation method, and the effluent could be reused as water for preparation of fresh so- dium hypochlorite solution.

关 键 词：废次氯酸钠废水 亚磷酸盐 正磷酸盐 化学除磷 回用 

分 类 号：X783[环境科学与工程—环境工程]