利用短程脱氮工艺处理煤化工废水  

Coal chemical wastewater treatment by short-cut nitrogen removal process

作　　者：陈明翔 高会杰 孙丹凤 王刚 Chen Mingxiang;Gao Huijie;Sun Danfeng;Wang Gang(SINOPEC Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,China)

机构地区：[1]中国石油化工股份有限公司大连石油化工研究院,辽宁大连116045

出　　处：《工业水处理》2020年第11期57-60,共4页Industrial Water Treatment

摘　　要：利用经过生物强化的短程硝化反硝化工艺处理煤化工废水中的总氮。当间歇曝气比为3、DO小于1.2 mg/L时,一段曝气结束的亚硝酸盐氮积累率在67%~88%,能够实现短程硝化。在水力停留时间为6 h的条件下,氨氮进水质量浓度和负荷分别为80 mg/L和0.34 kg/(m^3·d)左右时,出水氨氮低于8 mg/L;总氮进水质量浓度和负荷分别为85 mg/L和0.33 kg/(m^3·d)左右时,出水总氮低于40 mg/L。The short-cut nitrification and denitrification process with biological enhancement was used to treat the TN in coal chemical wastewater.One case the ratio of intermittent aeration was 3 and DO was less than 1.2 mg/L,NO2^--N accumulation was 67%-88%at the end of the first aeration,which achieved short-cut nitrification.Under the condition of hydraulic retention time of 6 h,the concentration and load of influent NH3-N reached about 80 mg/L and 0.34 kg/(m^3·d),the effluent NH3-N concentration remained less than 8 mg/L.When the concentration and load of influent TN reached 85 mg/L and 0.33 kg/(m^3·d),the effluent TN remained less than 40 mg/L.

关 键 词：短程硝化 反硝化 煤化工废水 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]