以氢气为电子供体的硫酸盐还原菌处理酸性矿山废水  

Treatment of acid mine wastewater treated by sulfate reducing bacteria with hydrogen as electron donor

作　　者：祝传静 田森林[1] 黄建洪[1] 李英杰[1] 胡学伟[1] ZHU Chuanjing;TIAN Senlin;HUANG Jianhong;LI Yingjie;HU Xuewei(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China)

机构地区：[1]昆明理工大学环境科学与工程学院

出　　处：《化工进展》2020年第2期747-754,共8页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金（51668026）;国家重点研发计划（2018YFC1802603）

摘　　要：研究氢气作为唯一电子供体的硫酸盐还原菌对酸性矿山废水的处理效果。本文对反应过程中pH和氧化还原电位(O RP),目标代谢产物H2S和∑S2(H S、S2),出水中重金属及总有机碳进行分析。研究表明,生物反应器pH可迅速上升至8.75~8.80,ORP下降至330~420mV;在4865mg/LSO42-浓度下硫酸盐还原菌活性较好,其目标代谢产物H2S与∑S2的积累量分别为88mg/L、172mg/L;Zn^2+、Fe^2+、Cu^2+、Mn^2+的去除率分别为94.3%、94.7%、97.5%、81.7%,重金属Cu^2+、Zn^2+的出水浓度分别为0.52mg/L、1.99mg/L,中和沉淀出水pH为6.9,其出水水质可达《污水综合排放标准》一级标准;出水残存总有机碳≤3mg/L,远低于以有机物为电子供体的出水水质;H 2培养生物反应器中主要以脱硫弧菌属为主导。The treatment effect of acid mine drainage by sulfate-reducing bacteria fed with hydrogen as the sole electron donor was studied.In this paper,the pH and ORP,the target metabolites H2S and∑S2(HS,S2),the heavy metals and total organic carbon in effluent were analyzed.The research showed that the pH rose rapidly to 8.8 and the ORP declined to-415mV in the bioreactor.The activity of sulfate-reducing bacteria was better at the high SO24-concentration,and the accumulation of target metabolites H2S and∑S2 were 88mg/L,172mg/L,respectively.The removal rates of Zn^2+,Fe^2+,Cu^2+,Mn2+were 94.3%,94.7%,97.5%,81.7%,respectively,the effluent concentrations of heavy metals Cu^2+,Zn^2+ were 0.52mg/L,1.99mg/L respectively,the pH of neutralization precipitation water was 6.9 and the effluent quality could reach the first level of integrated wastewater discharge standard.The effluent TOC≤3mg/L,which was lower than that with the organic carbon as the electron donor.The H2 culture bioreactor was mainly dominated by Desulfovibrio.

关 键 词：硫酸盐还原菌 酸性矿山废水 氢气 电子供体 

分 类 号：X703[环境科学与工程—环境工程]