摘要
以生活污水二级生物处理后的出水为研究对象 ,考察了铁盐对浓度在 2～ 4mg/L范围内的总磷的混凝去除效果及影响因素。结果表明 ,铁盐除磷的最佳 p H为 7.5～ 8;铁盐投加量较低时 ,适当提高 GT值可使总磷去除率增加 15 %～ 2 0 % ;在适当的混凝搅拌条件下 ,三价铁盐和聚合硫酸铁对总磷的去除率均在 70 %以上 ,混凝后过滤可使出水中总磷降至 0 .5 mg/L以下。
Based on the effluent of secondary bio treatment sewage , the removal efficiency and factors affected the ferric salt coagulation for TP(total phosphorus) had been studied. The research results showed that optimum pH of TP removal by ferric salt is 7.5~8. When the dose of ferric salt was lower, improving the factor of GT can gained the additional removal of total phosphorus about 15%~20%. Under the suitable coagulant conditions, the removal of total phosphorus was above 70% by Fe(Ⅲ) as well as poly ferric sulfate, the filter after coagulant can make the TP of effluent less than 0.5 mg/L.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2002年第6期361-364,共4页
Environmental Pollution & Control
基金
广州市环保局小区生活污水处理厂示范工程项目 (B2 3 0 2 65 0 )
