Treatment of Nickel-containing Wastewater by Sulfate Reducing Bacteria with Rice Chaff as Immobilized Carrier
LI Juan LI Hao-ran SUN Chun-bao
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
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%.
李娟 李浩然 孙春宝. 农业稻壳固定硫酸盐还原菌处理含镍废水[J]. , 2010, 10(1): 103-108.
LI Juan LI Hao-ran SUN Chun-bao. Treatment of Nickel-containing Wastewater by Sulfate Reducing Bacteria with Rice Chaff as Immobilized Carrier. , 2010, 10(1): 103-108.
2010, Vol. 10 
