• 关键词：倒置A²/O  染织废水  活性污泥  PCR-DGGE  微生物区系

• 基金项目：

• 李娜
• 华南理工大学生物科学与工程学院, 广州 510006

• 林晓珊
• 华南理工大学生物科学与工程学院, 广州 510006

• 张毅
• 华南理工大学生物科学与工程学院, 广州 510006

• 摘要：基于16SrDNA的PCR-DGGE(polymerase chain reaction-denaturing gradient gel electrophoresis)技术研究了倒置A²/O(anoxic-anaerobic-aerobic)工艺处理染织废水过程中的微生物群落结构.从兼氧、厌氧和好氧区共取6个不同处理阶段的样品,测量了不同处理阶段样品的COD、pH、NH₄⁺-N、H₂S、总磷(TP)、污泥含量(TS)、色度及其脱除率,并分析了这些指标的变化规律.结果显示,COD在处理后期降到了145mg·L^-1,NH₄⁺-N的脱除率可达到85%,硫化氢的去除率达到了90%以上,磷的脱除率可达80%以上,TS处于逐渐升高的趋势,色度的脱除率达到65%.DGGE图谱显示,好氧处理阶段的微生物多样性明显比兼氧处理和厌氧处理的阶段的要丰富.

• Abstract：The microbial community structure in activated sludge of dyeing-weaving wastewater,treated by an anoxic-anaerobic-aerobic process,was studied by nested polymerase chain reaction-denaturing gradient gel electrophoresis(PCR-DGGE) based on 16SrDNA sequences.Activated sludge samples were collected from anoxic、anaerobic and aerobic conditions at 6 different treatment periods and COD、pH、NH₄⁺-N、H₂S、TP、TS(tatal solids)、 color and their removal rates at different times were monitored.The results showed that the value of CODdecreased to 145 mg·L^-1;the removal efficiencies of NH₄⁺-N,H₂Sand Pwere above 85%,90% and 80% respectively;while TSbasically increased and the color removal rate was about 65%.The DGGEmap showed that the microbial community was more abundant in the aerobic treatment periods than in the anaerobic and anoxic treatment periods.

• Key words：inverted A²/O  dyeing-weaving wastewater  activated sludge  PCR-DGGE  microbial community

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