厌氧折流板污泥对偶氮染料酸性大红GR的生物降解性能研究

研究了厌氧折流板反应器（ABR）活性厌氧污泥对偶氮染料酸性大红GR的吸附与生物降解性能，并与失活污泥进行了对比。试验结果表明，35℃时厌氧活性污泥2h、12h、6d的脱色率分别为78.2%、86.0%、98.9%。无论在反应初始阶段还是稳定阶段，ABR活性厌氧污泥对染料的去除效果都明显优于失活污泥。而且在初始COD为1152mg/L的，由于非有效吸附位置染料脱落等原因，反应期间，失活污泥混合液中染料浓度还会升高。情况下，活性厌氧污泥混合液出水COD为86.0mg/L，去除率约为92.5%。这说明ABR厌氧污泥微生物在短时间内便可以得到驯化，一旦厌氧微生物适应生长环境，生物降解便开始对染料发挥作用。

Biodegradation of azo dye C. I. Acid Red 73 in anaerobic baffled reactor sludge

Simultaneous biodegradation and adsorption of the azo dye C. I. Acid Red 73 were investigated using the living anaerobic sludge from anaerobic baffled reactor （ ABR）, which were compared with the autoclaved （dead） bio -sludge. The results showed that decolorization efficiencies of living anaerobic sludge were 78.2%, 86.0% and 98.9% respectively at 2 h, 12 h and 6 h when temperature was 35 ℃. The living anaerobic sludge achieved higher removal efficiencies than that of dead bio -sludge,whether at initial phase or at steady phase. Furthermore,dye concentration was still increased in dead bio - sludge mixed liquor due to dye desquamation at non -available absorption site. When COD initial concentration was 1 152 mg/L, effluent concentration of the living anaerobic sludge mixed liquor was 86.0 mg/L. The removal efficiency was about 92.5%. The results indicated that microorganism in ABR anaerobic sludge could be acclimated during short period, Once anaerobic microbe was acclimated to growth environment,decolorization of dye was performed by biodegradation.