溶解氧浓度对硅藻土移动床复合生物反应器处理城市污水的影响  

The influence of DO on the treatment of municipal wastewater using diatomaceous earth moving bed composite bio-reactor

作　　者：赵雅萍[1] 李秀艳[1] 

机构地区：[1]华东师范大学环境科学系,上海200062

出　　处：《给水排水》2007年第S1期138-141,共4页Water & Wastewater Engineering

基　　金：国家高技术研究发展(863)经费资助;上海水环境质量改善技术与综合示范项目(2003AA601020)。

摘　　要：利用硅藻土移动床复合生物反应器处理城市污水。以复配硅藻土作为微生物的载体,在连续流小试中,考察溶解氧浓度对反应器处理城市污水效果的影响。当溶解氧浓度为1.85～2.38 mg/L时,处理出水TN为13～16mg/L,满足《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级B标准,其他出水指标如COD_(Cr)为12～22mg/L,NH_3—N为0.5～2.6mg/L;出水TP为0.2～0.9mg/L,都满足GB 18918—2002一级A标准。表明该反应器在中小规模污水处理方面是一个有前途的污水处理工艺单元。The diatomaceous earth moving bed composite bio-reactor for municipal wastewater treatment was studied.The diatomaceous earth was used as biomass carriers to evaluate the effect of dissolved oxygen concentration on treatment efficiency in lab-scale continuous flow experiments. When DO was 1.85～2.38mg/L,TN concentrations in effluent are 13～16.0mg/L,which meet the first class B level in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918—2002).Other water quality indexes,such as COD_(Cr) 12～22mg/L,NH_3—N 0.5～2.6mg/L and TP 0.2～0.9mg/L,meet the first class A level of GB 18918—2002,It can be seen that diatomaceous earth moving bed composite bio-reactor would be a promising unit in small and medium-scale wastewater treatment systems.

关 键 词：硅藻土 移动床 生物反应器 城市污水 

分 类 号：TU992.3[建筑科学—市政工程]