Biological treatment of wastewater with high concentrations of zinc and sulfate ions from zinc pyrithione synthesis  

生物法处理吡啶硫酮锌生产废水中高浓度锌离子和硫酸根离子（英文）

作　　者：Zhi-xiong PENG Hui-jun HE Chun-ping YANG Guang-ming ZENG Shan WEN Zhou YAN Hai-hong XIANG Yan CHENG Sheldon TARRE Michal GREEN 彭志雄;何慧军;杨春平;曾光明;文珊;严洲;向海弘;程燕;Sheldon TARRE;Michal GREEN(湖南大学环境科学与工程学院,长沙410082;湖南大学环境生物与控制教育部重点实验室,长沙410082;浙江工商大学环境科学与工程学院浙江省固体废物处理与资源化重点实验室,杭州310018;Faculty of Civil and Environmental Engineering,Israel Institute of Technology,Haifa 32000,Israel)

机构地区：[1]College of Environmental Science and Engineering, Hunan University, Changsha 410082, China [2]Key Laboratory of Environmental Biology and Pollution Control (Hunan University),Ministry of Education, Changsha 410082, China [3]Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling,College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China [4]Faculty of Civil and Environmental Engineering, Israel Institute of Technology, Haifa 32000, Israel

出　　处：《Transactions of Nonferrous Metals Society of China》2017年第11期2481-2491,共11页中国有色金属学报（英文版）

基　　金：Project(2015DFG92750)supported by the International S&T Cooperation Program of China;Projects(51278464,51478172)supported by the National Natural Science Foundation of China;Project(2014GK1012)supported by the Department of Science and Technology of Hunan Province,China

摘　　要：An enriched and domesticated bacteria consortium of sulfate-reducing bacteria(SRB)was used to treat wastewater from zinc pyrithione(ZPT)production,and the effects of different reaction parameters on sulfate reduction and zinc precipitation were evaluated.The single-factor experimental results showed that the removal rates of Zn2+and24SO?decreased with an increased ZPT concentration ranging from3.0to5.0mg/L.Zn2+and24SO?in wastewater were effectively removed under the conditions of30?35°C,pH7?8and an inoculum concentration of10%?25%.The presence of Fe0in the SRB system enhanced Zn2+and24SO?removal and may increase the resistance of SRB to the toxicity of Zn2+and ZPT in wastewater.A Box?Behnken design was used to evaluate the influence of the main operating parameters on the removal rate of24SO?.The optimum parameter values were found to be pH7.45,33.61°C and ZPT concentration of0.62mg/L,and the removal rate of24SO?reached a maximum of91.62%under these optimum conditions.采用富集和驯化后的硫酸盐还原菌处理吡啶硫酮锌生产废水,并考察不同实验参数对硫酸盐降解和锌沉淀的影响。单因素实验结果表明:当吡啶硫酮锌浓度为3.0~5.0 mg/L时,锌离子和硫酸根离子的去除率呈明显下降趋势。当温度为30~35℃、pH为7~8、接种量为10%~25%时,锌离子和硫酸根离子都能得到有效去除。零价铁不仅能提高硫酸盐还原菌对硫酸根离子和锌离子的去除效果,还能加强硫酸盐还原菌对锌离子和吡啶硫酮锌毒性的抗性。此外,采用Box-Behnken法研究主要实验参数对硫酸盐去除率的影响。得到最佳实验条件如下:pH7.45、温度33.61℃、吡啶硫酮锌浓度0.62 mg/L。在最佳实验条件下硫酸根离子的去除率能达到最大值91.62%。

关 键 词：biological treatment sulfate reduction sulfate-reducing bacteria WASTEWATER zinc pyrithione ZINC 

分 类 号：X703[环境科学与工程—环境工程]