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Chinese Journal of Applied Ecology ›› 1993, Vol. 4 ›› Issue (4): 430-435.

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Microbial purification of Cr(Ⅵ) containing electroplating wastewater

Li Fude, Tan Hong, An Muhui, Zhao Xiaohong, Wang Pin, He Zongying, Zhang Yongdi   

  1. Chengdu Institute of Biology, Academia Sinica, Chengdu 610041
  • Received:1992-08-31 Revised:1993-02-20 Online:1993-10-25 Published:1993-10-25

Abstract: Ahigh efficient strain SR Ⅰ is isolated from Cr(Ⅵ) containing electroplating sludge under anaerobic culture, and its purification effect on electroplating effluent is studied. In electroplating effluent, the purification rate of Cr(Ⅵ) by strain SR Ⅰ is stimulated by Zn2+,UO22+ and Sr2+, inhibited by Ag+, Cd2+ and SiF62-, and not influenced by SO42- CO32- and Cl-. The purification efficiency of strain SR Ⅰ is 99.6% at 5-100μg Cr(Ⅵ)ml-1, pH6-7 and 20-30C.

Key words: Chromium, Wastewater, Microorganism, Purification rate