%0 Journal Article
%T Feasibility Study on Coke Wastewater Treatment Using Membrane Bioreactor (MBR) System with Complete Sludge Retention<br>无排泥条件下的膜-生物反应器系统处理焦化废水可行性研究
%A ZHAO Wen-tao
%A HUANG Xi
%A LEE Duu-jong
%A HE Miao
%A YUAN Yuan
%A <br>赵文涛
%A 黄霞
%A 李笃中
%A 何苗
%A 袁媛
%J 环境科学
%D 2009
%I 
%X A laboratory-scale submerged anaerobic-anoxic-oxic membrane bioreactor (A_1/A_2/O-MBR) system was used to treat real coke wastewater and operated continuously for 160 d with complete sludge retention. Pollutants removal performance of the system was investigated through long-term operation. The characteristics of dissolved organic matters (DOMs) in influent and effluent coke wastewater were analyzed using hydrophilic/hydrophobic fractionation, and further discussed based on fluorescence excitation-emission-matrix (EEM). The results showed that A_1/A_2/O-MBR system could stably remove 88.0% ± 1.6% of COD, > 99.9% of volatile phenol, 99.4% ± 0.2% of turbidity, and 98.3% ± 1.9% of NH_4~+ -N, with individual average effluent concentrations of 249 mg/L ± 44 mg/L, 0.18 mg/L±0.05 mg/L,1.0 NTU ±0.2 NTU and 4.1 mg/L ±4.3 mg/L, respectively; moreover, the maximum TN removal rate also reached 74.9 % . During the whole operation period, the MLVSS/MLSS appeared to be constant as 90.2% ± 1.0% and no inorganic matters accumulation occurred. The observed sludge production (MLVSS/COD) decreased with time and stabilized at 0.035 kg/kg. DOMs in coke wastewater were fractionated as hydrophobic acids (HOA), hydrophobic neutrals (HON), hydrophobic bases (HOB) and hydrophilic substances (HIS); HOA was found to be the most abundant constituent in terms of DOC and color intensity both in influent and effluent, which accounted for 70% and 67% of total DOC, and 75% and 76% of total color intensity, respectively. Humic-like substances were suggested to be the major refractory organic and color-causing compounds coke wastewater effluent according to EEM analysis.
%K coke wastewater
%K membrane bioreactor
%K complete sludge retention
%K hydrophobic acids
%K fluorescence excitation-emission matrix
%K humic substances-like matters<br>焦化废水
%K 膜.生物反应器
%K 无污泥排放
%K 疏水酸性组分
%K 三维荧光光谱
%K 腐殖质类物质
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=D6D9406EAF0A0BEA4CB5F37300CFE77C&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=708DD6B15D2464E8&sid=F4140C821579548C&eid=F39F4022D2BD9EAF&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=30