摘要
浙江某城镇污水处理厂对上游工业园区的工业废水进行纳管后,工业废水比例增大,进水的污染物比例发生变化,碳、氮、磷营养比例失调,造成污水处理厂在运行过程中出水TN和TP不能稳定达标,为此采取改造缺氧池、曝气系统、混合液回流系统和优化运行模式等措施对污水处理厂进行脱氮除磷强化。改造后运行结果表明,出水TN和TP分别为3.43~14.47 mg/L和0.004~0.481 mg/L,稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准。
After the industrial wastewater of an upstream industrial park enters a municipal wastewater treatment plant in Zhejiang,the increasing proportion of industrial wastewater causes the variation of influent pollutants ratio,imbalance of carbon to nutrients ratio,and unstable compliance of effluent TN and TP.Thus wastewater treatment plant was retrofitted through the transformation of anoxic tank,aeration system,mixing liquid reflux system and the optimization of operation mode to enhance phosphorus and nitrogen removal.The operation results after reconstruction showed that the effluent TN and TP were 3.43-14.47 mg/L and 0.004-0.481 mg/L,which stably reached the first level A requirements of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant( GB 18918-2002).
作者
俞勇
喻盛华
陈达钢
倪黄蕾
廖礼胜
YU Yong;YU Sheng-hua;CHEN Da-gang;NI Huang-lei;LIAO Li-sheng(Zhejiang Fuchun Ziguang Environmental Protection Co.Ltd,Hangzhou 310012,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2020年第12期125-128,共4页
China Water & Wastewater
基金
浙江省科技厅2018年度重点研发计划项目(2018C03006)。
关键词
工业废水
CAST工艺
脱氮除磷
industrial wastewater
CAST process
nitrogen and phosphorus removal
作者简介
俞勇(1979-),男,浙江杭州人,大学本科,高级工程师,主要从事环境工程和技术工作。E-mail:yuy@zze.com.cn。
