反硝化聚磷菌脱氮除磷机理研究

Denitrifying Phosphorus Accumulating Bacteria Denitrification and Phosphorus Removal Mechanism

目前水体中氮磷含量较高的问题逐渐严重,利用反硝化聚磷菌来进行脱氮除磷的反硝化除磷工艺为生物脱氮除磷提供了新的方向。本研究以反硝化聚磷机理为基础,采用动态的SBR反应器进行菌种的富集培养,驯化富集反硝化聚磷菌,同时跟踪富集过程中污染物的去除情况。实验结果表明,富集成功后SBR系统内除磷率达到80%以上,总氮及COD的去除率达到90%左右,系统稳定且脱氮除磷效果较好。通过吸磷实验、反硝化脱氮产气实验从富集的活性污泥中,筛选出来4株反硝化聚磷菌。

Currently,nitrogen and phosphorus in water has been a serious problem,the use of denitrifying bacteria phosphorus has revealed a new direction for biological nutrient removal.In this study,the mechanism of denitrifying phosphorus basis using dynamic SBR reactor enrichment culture bacteria,denitrifying phosphorus enrichment domesticated bacteria,while the removal of trace contaminants in the case of the enrichment process.Experimental results show that the success in the SBR system phosphorus enrichment rate of over 80%,total nitrogen and COD removal rate about 90%,nitrogen and phosphorus removal system is stable and better.By uptake experiments,the experimental gas denitrification from enriched activated sludge screened 4denitrifying PAOs.