%0 Journal Article
%T Operation optimization of A/A/O oxidation ditch for nitrogen removal from low-temperature and low-carbon municipal sewage<br>处理低温低碳源城市污水的A/A/O氧化沟工艺脱氮运行工况优化
%A Zhang Zhi
%A Li Bolin
%A Xiang Xinyi
%A Zhang Chi
%A Liu Shaowu
%A <br>张智
%A 李柏林
%A 相欣奕
%A 张驰
%A 刘少武
%J 环境工程学报
%D 2012
%I 
%X Aiming to improve the efficiency of nitrogen removal from low temperature and low carbon municipal sewage,a pilot scale experimental study with A/A/O oxidation ditch process was carried out in Jingkou Waste Water Treatment Plant of Chongqing in winter.Based on experiments,the best operation mode was determined from the tested 3 modes,in which,there were 5 aeration wheels in total,with the first 3 in low-speed operation,the 4th in high-speed operation and the 5th shut-down.The best results obtained were as follows: average removal rates of COD,NH+4-N and TN were 86.5%,75.4% and 70.1% respectively and their concentrations in the effluent were 21.0,6.1 and 14.9 mg/L,respectively,which could meet the first level B class criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002).Considering the first level A class criteria,compliance rates of COD,NH+4-N and TN in the effluent were 100%,20% and 40%,respectively.
%K anaerobic-anoxic-aerobic oxidation ditch
%K low temperature
%K low carbon
%K operation optimiza-tion
%K nitrogen removal<br>A/A/O氧化沟
%K 低温
%K 低碳源
%K 运行工况优化
%K 脱氮
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=078384E9FE9084EAE819E70779C41D30&yid=99E9153A83D4CB11&vid=B31275AF3241DB2D&iid=5D311CA918CA9A03&sid=91907174EE146596&eid=E47E46FC9ED0D928&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=0