含盐废水生物/化学除磷模型及除磷剂的强化效果  

Biological/Chemical Phosphorus Removal Models and Enhanced Treatment of Saline Wastewater by Phosphorus Removal Agents

作　　者：董建威[1] 何强[2] 司马卫平[1,2] 

机构地区：[1]四川理工学院建筑工程学院,四川自贡643000 [2]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2014年第21期106-109,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07315-004)

摘　　要：采用CASS工艺协同处理高盐榨菜废水与城镇污水，考察含盐废水作用下城镇污水处理系统的生物／化学强化除磷规律，并分析除磷剂对CASS工艺出水水质的影响。研究结果表明：当盐度为5g/L、进水总磷为7．3—8．7mg／L时，生物除磷出水总磷为2．1～3．6mg／L，并分别建立了聚合硅酸铁、氯化铁和硫酸铝为除磷剂时的生物／化学强化除磷模型。除磷剂的投加有利于进一步降低处理系统出水COD和SS值，且强化效果依次为：聚合硅酸铁〉氯化铁〉硫酸铝。The CASS process was used to treat high-salinity mustard tuber wastewater and munici- pal wastewater. The regularity of biologicaL/chemical phosphorus removal in municipal wastewater treat- ment systems with saline wastewater was investigated, and the influence of phosphorus removal agents on the effluent quality was analyzed. The results showed that when the salinity was 5 g/L and the influent TP concentration was 7.3 to 8.7 mg/L, the effluent TP concentration was 2.1 to 3.6 mg/L in the biological phosphorus removal system. BiologicaL/chemical phosphorus removal models were established, which used polyferric silicate, ferric chloride and aluminum sulfate as the phosphorus removal agents, respec- tively. Dosing of phosphorus removal agents was conducive to further reduce the COD and SS values in the effluent from the treatment system, and the sequence of the enhanced effect was polyferric silicate 〉 ferric chloride 〉 aluminum sulfate.

关 键 词：含盐废水 生物/化学除磷模型 除磷剂 CASS工艺 

分 类 号：X703[环境科学与工程—环境工程]