摘要
采用移动床生物膜反应器(MBBR)和曝气生物滤池(BAF)结合工艺对有机腈类废水处理进行了小试研究,以考察有机物的降解规律。经过稳定运行2个月,在两级硝化液回流比R=200%,pH=7.5,HRT=3 d的情况下,进水COD、CN-、NH3-N、TN及BOD5浓度平均值分别为3 024、38、185、305和845 mg/L时,出水COD、CN-、NH3-N、TN及BOD5平均浓度为50、0.5、10、45和17 mg/L,去除率分别为98.2%、98.7%、94.2%、85.2%和98.0%,BOD/COD比值由0.29提高到0.34,达到了《江苏省化学工业主要水污染物排放标准》(DB32/939-2006)一级排放标准。
A small-scale experimental study on nitrile wastewater removal using a combination process of moving bed biofilm reactor（MBBR） and biological aerated filter（BAF） was carried out to investigate the degradation law of organic nitrile.After running for 2 months steadily,for two-stage nitrification liquid reflux rate R=200%,pH=7.5 and HRT=3 d,when the average concentrations of COD,CN-,NH3-N,TN and BOD5 of influent were 3 024,38,185,305 and 845 mg/L,respectively,their average concentrations of effluent were 50,0.5,10,45 and 17 mg/L,respectively.And their removal efficiencies were 98.2%,98.7%,94.2%,85.2% and 98.0%,respectively.The ratio of BOD/COD rose from 0.29 to 0.34,and the effluent could meet the Standard（Grade-1） of Jiangsu Province Chemical Industry Major Water Pollution Discharge（DB32/939-2006）.
出处
《环境工程学报》
CAS
CSCD
北大核心
2010年第12期2819-2822,共4页
Chinese Journal of Environmental Engineering
