Microbial purification of Cr(Ⅵ) containing electroplating wastewater

Abstract

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 SiF₆^2-, and not influenced by SO₄^2- CO₃^2- 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

Li Fude, Tan Hong, An Muhui, Zhao Xiaohong, Wang Pin, He Zongying, Zhang Yongdi . Microbial purification of Cr(Ⅵ) containing electroplating wastewater[J]. Chinese Journal of Applied Ecology, 1993, 4(4): 430-435.

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Microbial purification of Cr(Ⅵ) containing electroplating wastewater

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