Effect of pH on Pretreatment of Sulfate-laden Wastewater for Mixotrophic Desulfurization-denitrification Process

摘要：

An anaerobic attached-growth bioreactor was set up to treat wastewater rich in sulfate and organic carbon.It was the pretreatment of mixotrophic desulfurization-denitrification process.With pH decreasing from 8 to 7,the sulfate removal rate and oxidation reduction potential increased,while sulfide generating rate and effluent pH decreased.When pH value was maintained at 7.5,the removal rates of sulfate and organic carbon reached 91.5％ and 90.5％,respectively.Meantime,the generating rate of sulfide reached 47.8％,which was beneficial to the subsequent treatment and to the thorough removal of sulfurous compounds.The results showed that the suitable influent pH in sulfate reduction stage for the pretreatment of desulfurization-denitrification process was 7.5.

关键词： desulfurization sulfate organic carbon attached-growth pH

作者: Wei Li Xiao Liang Jianguo Lin

作者单位: College of Environmental Science and Engineering,Dalian Maritime University,China College of Marine Engineering,Dalian Maritime University,China

会议类型: 国际会议

会议名称: 2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 429-433

在线出版日期: 2010-07-24（万方平台首次上网日期，不代表论文的发表时间）