Xie Bing, Kang Kyoung-Soon
Department of Environmental and Technology, East China Normal University, Shanghai 200062, China.
J Environ Sci (China). 2003 May;15(3):328-33.
The effect and uptake of copper ion on SBR (sequence batch reactor) biological treatment system was studied. Special nutrient and powder activated carbon (PAC) additive were tested as uptake stimulation technique. Results showed that copper ion had higher effect on unacclimated activated sludge system than on acclimated one. The special nutrient adding could enhance the uptake of copper significantly, while PAC adding could improve the sludge settling and decrease the turbidity of effluent. The variation of bacterial community analyzed by 16S rDNA method showed the acclimation of copper could increase copper resistance species, and excess accumulation could cause some species diminish. It was confirmed that acclimation could improve the resistance and uptake ability of microorganism to heavy metal.
研究了铜离子对序批式反应器（SBR）生物处理系统的影响及吸收情况。测试了特殊营养物质和粉末活性炭（PAC）添加剂作为吸收促进技术。结果表明，铜离子对未驯化的活性污泥系统的影响比对驯化系统的影响更大。添加特殊营养物质可显著提高铜的吸收，而添加PAC可改善污泥沉降并降低出水浊度。通过16S rDNA方法分析的细菌群落变化表明，铜的驯化可增加抗铜物种，而过量积累会导致一些物种减少。证实驯化可提高微生物对重金属的抗性和吸收能力。
