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›› 2010, Vol. 10 ›› Issue (1): 103-108.

• 过程与工艺 • 上一篇    下一篇

农业稻壳固定硫酸盐还原菌处理含镍废水

李娟 李浩然 孙春宝   

  1. 北京科技大学土木与环境工程学院 中国科学院过程工程研究所生化工程国家重点实验室 北京科技大学土木与环境工程系
  • 收稿日期:2009-09-10 修回日期:2009-10-29 出版日期:2010-02-20 发布日期:2010-02-20
  • 通讯作者: 李娟

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

LI Juan LI Hao-ran SUN Chun-bao   

  1. School of Civil and Environmental Engineering, University of Science and Technology Beijing State Key Laboratory of Biochemical Engineering, Institute of Process Engineering Department of Environmental Engineering, University of Science and Technology Beijing
  • Received:2009-09-10 Revised:2009-10-29 Online:2010-02-20 Published:2010-02-20
  • Contact: LI Juan

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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3~6 mm的砾石和直径4 mm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pH 7.0、初始镍离子浓度为100 mg/L、进液量为5 mL/d时，体系启动3 d后除镍率稳定在95%以上. 后分别在第25和50 d改变进液的镍离子浓度为200和300 mg/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400 mg/L、进液量为20 mL/d时，镍离子处理效率低于40%，固定化柱被穿透.

关键词: 硫酸盐还原菌, 镍离子, 稻壳, 除镍率, 含镍废水

Abstract: 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 carrier. 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 carrier had a short start-up time and a better effect on removal of nickel ions in the wastewater. The nickel removal rate of immobilized column with rice chaff as carrier operated for 3 d could reach 95% and kept stable when the initial concentration of Ni2+ 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%.

Key words: sulfate reducing bacterium, nickel ion, nice chaff, nickel removal rate, nickel-containing wastewater

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