环境工程学报2025，Vol.19Issue(9)：2086-2095,10.DOI:10.12030/j.cjee.202501017
单质硫协同硫酸盐的硫介导生物系统强化电镀废水中铜的去除
Elemental sulfur-augmented sulfate reduction in a sulfur-mediated biological system for enhanced copper removal from electroplating wastewater
摘要
Abstract
Sulfate-reducing bacteria(SRB)biological systems are commonly used for anaerobic treatment of heavy metal-containing wastewater.However,when treating heavy metal wastewater with low carbon content and high sulfate levels,this technology faces challenges including excessive electron donor consumption,high costs,poor stability,and treatment efficiency susceptible to inhibition by heavy metal biotoxicity.To address these limitations,this study developed a S0-SRB biological system utilizing S0 and SO42-as synergistic electron acceptors to evaluate its efficacy in treating copper-ammonia wastewater,with comparative analysis against conventional SRB and S0RB systems.The results demonstrated that at 0 mg·L-1 Cu(Ⅱ),the S0-SRB system achieved the highest average S2-concentration of(97.8±4.1)mg·L-1 while reducing COD consumption by approximately 10%compared to SRB.Within 20～50 mg·L-1 Cu(Ⅱ),all three systems effectively removed Cu(Ⅱ).At 70～100 mg·L-1 Cu(Ⅱ),S0-SRB and S0RB maintained stable effluent S2-(10～60 mg·L-1)with>90%Cu(Ⅱ)removal,showing strong resistance to Cu(Ⅱ)inhibition on sulfur reduction,whereas SRB exhibited minimal COD utilization and Cu(Ⅱ)removal without sulfide production.Extracellular polymeric substance content in S0-SRB/S0RB sludge showed negligible Cu(Ⅱ)-induced variations,indicating robust structural stability.Microbial community analysis revealed Methanobacterium and Desulfuromonas synergistically enhanced sulfur reduction and metal removal in S0-SRB systems,with S0 stabilizing functional microbiota and improving heavy metal shock resistance.The S0-SRB system demonstrates superior treatment efficiency,cost-effectiveness,strong heavy metal tolerance,and operational stability,providing novel insights for developing carbon-deficient electroplating wastewater treatment technologies.关键词
硫介导生物系统/铜氨废水/S0-SRB生物系统/EPS分析/微生物群落Key words
sulfur-mediated biological system/copper-ammonia wastewater/S0-SRB biological system/EPS analysis/microbial community分类
资源环境引用本文复制引用
孙畅,邓秋金,陈奔,卢志枫,梁慧宇,崔海波,罗静海,朱宗强,吕慧..单质硫协同硫酸盐的硫介导生物系统强化电镀废水中铜的去除[J].环境工程学报,2025,19(9):2086-2095,10.基金项目
国家自然科学重点基金资助项目(52131001) （52131001）
广州市科技计划项目(2024A04J4372) （2024A04J4372）
