农业稻壳固定硫酸盐还原菌处理含镍废水  

Treatment of Nickel-containing Wastewater by Sulfate Reducing Bacteria with Rice Chaff as Immobilized Carrier

作　　者：李娟[1,2] 李浩然[1] 孙春宝[2] 

机构地区：[1]中国科学院过程工程研究所生化工程国家重点实验室,北京100190 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《过程工程学报》2010年第1期103-108,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:20876160);国家高技术研究发展计划(863)基金资助项目(编号:2007AA052158)

摘　　要：从活性污泥中筛选出一株硫酸盐还原菌,分别用完整稻壳、粒径3～6mm的砾石和直径4mm的海藻酸钠-氯化钙包埋小球制作固定化柱,进行处理含镍废水的对比研究.结果表明,用稻壳作为载体的反应器启动时间短,对废水中的镍离子去除效果好.采用稻壳作为载体的固定化柱在温度31℃及pH7.0、初始镍离子浓度为100mg/L、进液量为5mL/d时,体系启动3d后除镍率稳定在95%以上.后分别在第25和50d改变进液的镍离子浓度为200和300mg/L,其他条件不变,体系的除镍率仍保持在95%以上,直到进液镍离子浓度为400mg/L、进液量为20mL/d时,镍离子处理效率低于40%,固定化柱被穿透.A sulfate reducing bacterium was screened from the activated sludge. Complete rice chaff, gravel with 3-6 mm diameter and alginate-calcium chloride spheres with 4 mm diameter were used to make immobilized carder. Comparative study on treatment of nickel-containing wastewater was carried out using an immobilized column filled with immobilized bacteria. The experimental results show that the immobilized column using rice chaff as carder had a short start-up time and a better effect on removal of nickel ions in the wastewater. The nickel removal rate of immobilized columnn with rice chaff as carrier operated for 3 d could reach 95% and kept stable when the initial concentration of Ni^2＋ was 100 mg/L and the liquid volume 5 mL/d under the conditions of 31 ℃ and pH=7. Then the concentration was changed to 200 and 300 mg/L after 25 and 50 d with other conditions kept invariant, the removal rate remained up to 95%. The immobilized column was penetrated until the concentration and volume of the liquid feed were increased to 400 mg/L and 20 mL/d, and the nickel removal rate was lower than 40%.

关 键 词：硫酸盐还原菌 镍离子 稻壳 除镍率 含镍废水 

分 类 号：X712[环境科学与工程—环境工程]