高碑店污水处理厂强化硝化性能的优化控制  

Operation Control of Enhanced Nitrification Performance in Gaobeidian Wastewater Treatment Plant

作　　者：葛勇涛[1] 李佟[1] 王佳伟[1] 高琼[1] 蒋勇[1] 刘鸣[1] 杜爽[1] 

机构地区：[1]北京城市排水集团有限责任公司,北京100022

出　　处：《中国给水排水》2012年第13期136-139,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(2009ZX07318-005);北京市优秀人才培养项目(PYZZ090428001289)

摘　　要：高碑店污水处理厂通过控制好氧泥龄和溶解氧浓度等措施来强化硝化效果,使二级出水氨氮浓度连续四年稳定达到热电厂循环冷却水水质要求(<1 mg/L)。实际运行经验表明,在进行污泥龄计算时,应充分考虑污水及污泥的动态变化特征,通过物料平衡修正好氧泥龄,从而避免因泥龄过低导致的硝化不足;此外,对于来水量波动较大的大型污水厂来说,溶解氧自动控制是保障稳定的硝化效果和降低能耗的重要手段。通过对四年运行数据的统计计算,高碑店污水厂的鼓风机电耗为0.1 kW.h/m3,去除单位氨氮的电耗为1.95 kW.h/kg,去除单位氨氮的鼓风机电耗成本约为1.48元/kg。Using the case study of Beijing Gaobeidian WWTP, four years stability in which ammo- nia nitrogen was less than 1 mg/L in the secondary effluent was achieved. The requirements for cooling water in thermal power plant were satisfied. Enhanced nitrification performance is achieved by controlling aerated sludge retention time and DO. Actual operating experience indicates that sludge retention time es-timation should take into account the dynamic characteristics of wastewater and sludge. Aerated sludge retention time can be corrected by material balance calculation in order to avoid lack of nitrification due to low sludge retention time. In addition, for large wastewater treatment plants with large wastewater fluctuation, DO automatic control is an important method to ensure the stability of nitrification and low energy consumption. Based on the four-year statistical data, the blower energy consumption is 0.1 kW·h/m3 , the energy consumption for ammonia nitrogen removal is 1.95 kW·h/kg, and the blower energy cost for ammonia nitrogen removal is about 1.48 Yuan/kg.

关 键 词：硝化 氨氮 好氧泥龄 溶解氧 成本 

分 类 号：X703[环境科学与工程—环境工程]