生物法处理电镀铬废水的研究

Biology Treatment for Containing Electroplating Cr 6+ Wastewater

主要研究生物法处理电镀铬 [Cr6+ ]废水 .采用生物技术从电镀淤泥中分离出高效还原杆菌——脱硫孤菌 ,探讨菌量、铬离子浓度、溶液值、作用温度和时间等因素对还原杆菌去除溶液中铬离子效率 .结果表明 :在菌废比为 1∶ 1 .4 ,温度控制为 2 0～ 3 5℃ ,p H控制在5～ 7,最佳作用时间 1 6～ 2 0 h,[Cr6+ ]=75 mg/L时 ,Cr6+ 去除率可达 99.9%.

Biological method was adopted to deal with electroplating Cr 6+ wastewater.A strain of bacterium with high efficiency was isolated from electroplating sludge by using biological technique .The factors,including bacteriums quantity,concentration of Cr 6+ ,pH,temperature and reaction time which can make effect on the removal of Cr 6+ were studied.The result shows that Cr 6+ removal rate could reach 99.9% under conditions of the bacteriums quantity and Cr 6+ concentration 75mg/L.