污泥浓度对生物海绵铁体系中Fe^0的腐蚀影响研究  

Dissolution of Iron Ion Influenced by Concentration of Activated Sludge in Sponge Iron System

作　　者：李正[1] 王亚娥[1] 李杰[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《环境科学与技术》2014年第3期7-11,共5页Environmental Science & Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07201-005)

摘　　要：通过单因素实验,研究了不同活性污泥浓度对海绵铁体系中铁离子浓度变化的影响。结果表明:随着反应的进行,反应器泥水混合液中Fe(Ⅱ)和TFe浓度在不断升高,与活性污泥浓度成正相关性;pH值也呈现升高趋势,活性污泥浓度越高,pH值变化的越小;试验还发现海绵铁释铁过程包括生物腐蚀和化学腐蚀,生物腐蚀的影响要远远大于化学腐蚀。A single factor experiment was conducted to study the impact on changes of iron ion concentration by different concentrations of activated sludge in sponge iron system. Results showed that the concentration of Fe （ Ⅱ ） and TFe increased continually in the mixed liquor and was positively correlated with activated sludge concentration. In this progress, pH value also trended to increase and the higher activated sludge concentration made less change of pH value. The progress in which the release of iron ion occurs was found to include biological corrosion and chemical corrosion, and the impact of biological corrosion was much greater than chemical corrosion.

关 键 词：海绵铁体系 活性污泥浓度 类FENTON反应 生物腐蚀 

分 类 号：X172[环境科学与工程—环境科学]