低温下活性污泥处理2种染料废水及微生物群落结构研究

Treatment of two kinds of dye wastewater with activated sludge at low temperature and research on corresponding microbial community structure

现有工艺难以满足低温下染料废水的生物处理要求,为进一步提高低温染料废水的处理效率,分析了低温下活性污泥处理酸性红B和活性红2染料废水的处理效果及微生物群落结构。结果表明,系统稳定运行周期内,低温时酸性红B染料废水的去除效率高于活性红2染料废水,R1、R2、R3、R44组反应器的平均酶活性分别为8.87、6.98、7.24 mg(TF)/g(SS)和6.53 mg(TF)/g(SS)。低温时反应器中活性污泥微生物主要以Proteobacteria、Bacteroidetes、Chloroflexi、planctomycetes、Acidobacteria、Actinobacteria、Gemmatimonadetes核心菌群为主。

Current technologies cannot meet the need of biological treatment of dye wastewater at low temperature.In order to further improve degradation efficiency of dye wastewater at low temperature,the microbial community structure and degradation efficiencies of both acid red B dye-containing and reactive red 2 dye-containing wastewater are analyzed in activated sludge system.Results show that at low temperature,the degradation efficiency of acid red B dye-containing wastewater is higher than that of reactive red 2 dye-containing wastewater during the stable operation period of the system.The average enzymatic activities of R1,R2,R3 and R4 reactors are 8.87,6.98,7.24 and 6.53 mg(TF)/g(SS),respectively.The activated sludge microorganisms in the reactors at low temperature mainly include Proteobacteria,Bacteroidetes,Chloroflexi,Planctomycetes,Acidobacteria,Actinobacteria,and Gemmatimonadetes.