摘要
针对郑州某一城市污水处理厂"混合型城市污水"的特征,以厂区曝气沉砂池出水作为处理对象,设计1套A2/O工艺强化脱氮中试装置。该A2/O工艺采用氧化沟作为好氧池,氧化沟对总氮和氨氮的去除具有强化作用,同时可降低硝化液回流的能耗;当进水COD、NH3-N、TN的平均质量浓度分别为513.6、22.4、34.2 mg/L时,经A2/O工艺处理后,对COD、NH3-N、TN的平均去除率分别达到了91.2%、84.4%、71.44%,出水水质达到城镇污水处理厂污染物排放标准(GB 18918-2002)一级A标准,取得了良好的污染物去除和脱氮的效果,总体出水水质相对稳定。
For the ＂mixed city sewage＂ feature of a city sewage treatment plant, making the drained water of aeration sink sand pool as the processing object to deal with, designed an A2/O process plant for strengthen denitrification .The A2/O process took the oxidation ditch as oxygen pool, the oxidation ditch had a strengthening function for total nitrogen and ammonia nitrogen removal, It also can reduce the energy consumption of the nitrification fluid backflow; When the average influent concentrations of COD, NH3-N and TN were 5 l 3.6 mg/L, 22.4 mg/L, 34.2 mg/L, After the treatment of AZ/O process, the average removal rate on COD, NH3-N, TN reached 91.2%, 84.4%, 71.44%, respectively .The effluent met the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater plant （GB 18918-2002）. It had obtained the good effect for Pollutants and Nitrogen removal, and the outlet water was relatively stable.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第8期80-83,87,共5页
Technology of Water Treatment
基金
国家水体污染控制与治理科技重大专项(2009ZX07210-001-001)
关键词
A2/O工艺
脱氮
氧化沟
A2/O process
nitrogen removal
oxidation ditch
