Abstract:

The phosphorus removal capability of two new-typed coagulants with silicon,which are poly-ferric silicate sulfate(PFSS)and pol-aluminum silicate chloride(PASC),has been compared under two dosing methods in three sets of batch laboratory scale apparatus for treating domestic sewage.According to the experimental results,it is concluded that both total phosphorus and COD removal capabilities of PFSS are higher than PASC as the dosage is 10-50 mg/L.If PFSS is put in the aerobic tank and the dosage is less than 50 mg/L,the biologic synergic action of TP removal is found.So it is particularly suitable for PFSS being dosing in aerobic bioreactor for TP removal.

Key words: poly-ferric silicate sulfate, poly-aluminum silicate chloride , domestic sewage, phosphorus removal

摘要：

在3套处理生活污水的间歇式试验装置内，比较了两种投加方式下聚硅硫酸铁和聚硅氯化铝的除磷性能。结果表明，当混凝剂投加质量浓度在10～50 mg/L时，聚硅硫酸铁对TP和COD的去除效果均优于聚硅氯化铝，而当投加质量浓度低于50 mg/L时，聚硅硫酸铁对TP的去除具有生物协同作用，适用于好氧生物反应器除磷。

关键词: 聚硅硫酸铁, 聚硅氯化铝, 生活污水, 除磷

CLC Number: 

• X703