Study on BF-BFB process in coking wastewater treatment
Coking wastewater was treated by process of biological filter(BF) and bio-fluidized bed (BFB) with a special kind of carrier. The pretreated wastewater contained much more phenolic compounds with about 1460 mg/L of COD and 360 mg/L of NH+4-N. The wastewater treatment effect of this process was examined during biofilm colonization and operates formally. During biofilm colonization period, the treatment effect was greatly effected by biofilm colonization time. Since operates formally, the treatment effect was effected by HRT, reflux ratio, pH and aeration rate. The bio-fluidized bed system could achieve average removal efficiencies of 87.6％ and 97.5％ for COD and NH+4-N respectively at optimal operation condition, and NH+4-N in the effluent could meet the first level of National Discharge Standard.
coking wastewater treatment bio-filter bio-fluidized bed bio-film degradation
Wenpeng WU Suqin LI
School of Metallurgical & Ecological Engineering University of Science and Technology Beijing Beijing, China
国际会议
成都
英文
610-614
2010-07-09（万方平台首次上网日期，不代表论文的发表时间）