复合腐殖生物活性填料对活性污泥沉降性能的影响

发布时间：2019-06-19 21:23

【摘要】：为了考察复合腐殖生物活性填料对活性污泥沉降性能的影响,通过内置填料、外置填料和对照组SBR污水处理工艺的对比运行,对3组反应器的运行效能、沉降性能、胞外聚合物和微生物群落分布进行了研究。结果表明:投加复合腐殖生物活性填料的SBR反应器相比对照组SBR反应器可加强氮、磷的去除效能,改善活性污泥的沉降性能;通过胞外聚合物分析,发现内置填料和外置填料活性污泥的胞外聚合物(多糖和蛋白质)含量一直低于对照组的;3个微生物群落主要分布在Saprospiraceae、Rhodocyclaceae、Comamonadaceae、Flavobacteriaceae、env.OPS_17、Spirochaetaceae等6个科内;内置填料微生物群落(8.09%)和外置填料微生物群落(2.86%)中的Saprospiraceae,要比对照组微生物群落(29.82%)的比例高,表明通过复合腐殖生物活性填料的作用,Saprospiraceae类群减少,胞外聚合物分泌降低,活性污泥沉降性能得到增强,这与反应器实际运行效果和胞外聚合物分析研究内容一致。
[Abstract]:In order to investigate the effect of compound humic bioactive fillers on the sedimentation performance of activated sludge, the operation efficiency, sedimentation performance, extracellular polymer and microbial community distribution of three groups of reactors were studied by comparing the internal packing, external packing and control group SBR sewage treatment process. The results showed that the removal efficiency of nitrogen and phosphorus and the sedimentation performance of activated sludge were enhanced by adding compound humic bioactive fillers in SBR reactor compared with the control group SBR reactor, and the contents of extracellular polymers (polysaccharides and proteins) in the activated sludge with built-in fillers and external fillers were found to be lower than those in the control group by extracellular polymer analysis. The three microbial communities were mainly distributed in 6 Kone such as Saprospiraceae,Rhodocyclaceae,Comamonadaceae,Flavobacteriaceae,env.OPS_17,Spirochaetaceae. The proportion of Saprospiraceae, in the built-in packing microbial community (8.09%) and the external packing microbial community (2.86%) was higher than that in the control group (29.82%). The results showed that the Saprospiraceae group decreased, the extracellular polymer secretion decreased and the activated sludge sedimentation performance increased through the effect of compound humic bioactive fillers, which was consistent with the actual operation effect of the reactor and the research content of extracellular polymer analysis.
【作者单位】：吉林建筑大学松辽流域水环境教育部重点实验室;
【基金】：国家水体污染控制与治理技术科技重大专项(2012ZX07201-001)
【分类号】：X703

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