大孔微生物载体固定硫酸盐还原菌用于硫酸盐废水处理的研究  

Application of macroporous microbial support immobilized SRB in treatment of sulfates-containing wastewater

作　　者：冯新慧 李昀 张婷 周晓龙[1] FENG Xin-hui;LI Yun;ZHANG Ting;ZHOU Xiao-long(International Joint Research Center of Green Energy Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学化工学院绿色能源化工国际联合研究中心,上海200237

出　　处：《现代化工》2020年第10期178-183,共6页Modern Chemical Industry

摘　　要：为解决硫酸盐废水微生物降解过程中厌氧微生物生长缓慢、生物质易流失的问题,研究了一种大孔聚苯乙烯/有机硅树脂[Poly(St/MTQ)HIPE,简称PSMH]球型载体的制备方法,并将其作为填料应用于升流式固定床生物膜反应器,固定硫酸盐还原菌后进行废水处理。对反应器在不同进水SO4^2-质量浓度、COD/SO4^2-质量浓度比条件下的脱硫效能进行评价,并通过扫描电镜考察微生物在PSMH载体上的生长情况。结果表明,反应器在进水SO4^2-质量浓度为3681.6 mg/L、COD/SO4^2-质量浓度比为2.40时,平均SO4^2-脱除速率达1.87 kg/(d·m^3),平均SO4^2-脱除率达94.6%。PSMH适宜的孔道结构有利于硫酸盐还原菌在其表面及内部粘附生长。To solve the problem that anaerobic microorganisms grows slowly and biomass is easy to lose during microbial degradation process of sulfates-laden wastewater,a preparation method for high hydrophobic poly(St-MTQ)HIPE(PSMH)support beads is developed.The prepared PSMH beads are used as fillings in an up-flow fixed-bed biofilm reactor,to immobilize sulfate reducing bacteria(SRB),which is used to treat with sulfate-laden wastewater.The sulfates removal efficiency over PSMH immobilized SRB is evaluated under different influent sulfates concentrations,carbon source concentrations and COD/SO4^2-ratios in the biofilm reactor.The growth of SRB adhering on PSMH beads is characterized by scanning electron microscope(SEM).Study results show that the average removal speed and efficiency of sulfates in the biofilm reactor is 1.87 mg·d^-1·m^-3 and 94.6%,respectively when the sulfate concentration is 3681.56 mg·L^-1 and COD/SO4^2-ratio is 2.40.The appropriate pore structure of PSMH is suitable for SRB to grow on its surface and inside.

关 键 词：硫酸盐废水 生物反应器 微生物固定化 硫酸盐还原菌 

分 类 号：X703.1[环境科学与工程—环境工程]