厌氧耦联二级缺氧-好氧工艺强化生物脱氮除磷的探究  

Investigation of Anaerobic Coupled Secondary Anoxic-Aerobic Process for Enhanced Biological Nitrogen Removal and Phosphorus Removal

作　　者：陈洋[1] 王磊[2] CHEN Yang;WANG Lei(Shanxi Water Conservancy Vocational and Technical College,Yuncheng 044000,China;Jiangxi Key Laboratory of Environmental and Energy Catalysis,School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]山西水利职业技术学院,山西运城044000 [2]江西省南昌大学化学化工学院,江西省环境与能源催化重点实验室,江西南昌330031

出　　处：《水处理技术》2023年第9期119-123,共5页Technology of Water Treatment

基　　金：教育部就业实习基地项目(20220104273);山西省2022年水利发展基金水利技术研究推广补助项目(2022GM038)。

摘　　要：针对传统A^(2)/O工艺处理低C/N废水过程中氮磷去除不理想的现状,开发了厌氧耦连二级缺氧-好氧工艺(AMAO)强化低C/N生活废水的新工艺。结果表明在低C/N进水中,AMAO工艺能较好去除COD、氨氮和总磷,在稳定时期,出水COD、氨氮和TP的去除效率分别为94.6%~96.2%、94.2%~95.6%和92.1%~93.5%,均高于传统A^(2)/O工艺。多级缺氧好氧交替强化了脱氮除磷微生物代谢。在污泥特征方面,AMAO工艺污泥浓度大致为4.5~4.6 g/L,胞内聚合物聚羟基脂肪酸酯(PHA)的含量大致为5.4~5.6 mmol/g,高于传传统A^(2)/O工艺。微生物群落分析表明AMAO工艺内相对丰度前四的为Proteobacteria(变形菌门)、Bacteroidetes(拟杆菌门)、Nitrospirae(硝化菌门)和Acidobacteria(酸杆菌门)。本研究结果为低C/N生活废水的高效处理提供了一定的技术支撑。A new process of anaerobic coupled with a secondary anoxic-aerobic process(AMAO)was developed to enhance low-C/N domestic wastewater in response to the unsatisfactory nitrogen and phosphorus removal during the treatment of low-C/N wastewater by traditional A^(2)/O process.The results showed that the AMAO process could remove COD,ammonia nitrogen and total phosphorus better in the low-C/N influent,and the removal efficiencies of effluent COD,ammonia nitrogen and TP were 94.6%~96.2%,94.2%~95.6%and 92.1%~93.5%,respectively in the stabilization period,which was higher than that of the conventional A^(2)/O process.The multi-stage anoxic aerobic alternation enhanced the nitrogen and phosphorus removal microbial metabolism.In terms of sludge characteristics,the sludge concentration of the AMAO process was roughly 4.5~4.6 g/L,and the content of intracellular polymer polyhydroxy fatty acid ester(PHA)was roughly 5.4~5.6 mmol/g,which was higher than that of the conventional A^(2)/O process.Microbial community analysis showed that the top four relative abundances within the AMAO process were Proteobacteria(Phylum Aspergillus),Bacteroidetes(Phylum Bacteroidetes),Nitrospirae(Phylum Nitrobacter)and Acidobacteria(Phylum Acidobacter).The results of this study provide some technical support for the efficient treatment of low-C/N domestic wastewater.

关 键 词：AMAO工艺 生物脱氮除磷 胞内聚合物 微生物群落 

分 类 号：X703.1[环境科学与工程—环境工程]