摘要
结合城镇污水处理厂脱氮除磷技术改造工程实例,对老氧化沟进行功能区划分,确定明显的缺氧区和好氧区,采取措施增加好氧区溶解氧浓度,降低缺氧区溶解氧浓度。运行结果表明,系统出水主要指标稳定达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准。
Based on nitrogen and phosphorus transformation project case of urban sewage treatment plant, the old oxidation ditch was functional zoned to determine the apparent anoxic zone and aerobic zone. Dissolved oxygen concentration in the aerobic zone was increased and dissolved oxygen concentration was reduced in aerobic zone by some measures. The result shows that the main indicators of the effluent can achieve the first standard of ＂Urban sewage treatment plant emission standards＂ （GB 18918--2002）.
出处
《环境科技》
2010年第2期25-27,共3页
Environmental Science and Technology
