环境工程学报2025，Vol.19Issue(3)：578-585,8.DOI:10.12030/j.cjee.202409010
新型生物生态耦合工艺对生活污水的净化效果及微生物群落特征
Performance of new bio-ecological coupling process on domestic sewage purification and its microbial community characteristics
摘要
Abstract
In order to improve the treatment efficiency of the existing artificial wetland and better provide a suitable and feasible integrated process for domestic wastewater treatment,a set of biological-ecological coupled process(B-ER)was constructed in this study,including biological segment(anaerobic,biological rotary,aerobic)and ecological segment(composite electromagnetic field-reinforced vertical-flow artificial wetland),and its effect on domestic wastewater treatment and microbial community characteristics were explored.The results showed that when the hydraulic load was 1.3 m3·(m2·d)-1,the removal effects of TP,NH4+-N and COD were the best with the removal rates of 74.53％,98.35％and 97.06％,respectively,of which the effluent concentrations of NH4+-N and COD were lower than the Class A standard of'Water Pollutant Emission Standard of Rural Domestic Sewage Treatment Facility in Yunnan Province'(DB53/T 953-2019).The biological segment contributed 41.24％,88.41％and 86.44％to the average removal of TP,NH4+-N and COD,respectively,and their average removal rates increased by 31.63％,11.40％and 11.32％for the Bio-ecological segment,respectively.The top 3 dominant phyla in B-ER were Proteobacteria,Bacteroidota,and Chloroflexi,and the co-dominant genera were 7 species of Novosphingobium、Reyranella、BD1-7 clade、Nitrospira and Sphingomona,which played important roles in nitrification,denitrification and organics removal processes;The relative abundances of Proteobacteria,Actinobacteria and Nitrospira were 48.80％,4.76％and 2.74％in the Bio-ecological segment,were 41.72％,3.56％and 1.60％in the biological segment,respectively.FAPROTAX functional prediction showed that chemoheterotrophy(19.68％)and aerobic-chemoheterotrophy(16.75％)were the dominant bacterial functional groups in the whole B-ER,and aerobic-chemoheterotrophy in the Bio-ecological segment was higher than that in the biological segment(16.75％＞13.46％).Redundancy analysis showed that Proteobacteria,Nitrospira,Actinobacteria were positively correlated with TP removal rate,NH4+-N removal rate,and COD removal rate,respectively,and were the main microorganisms driving pollutant purification.The B-ER can improve the removal of C and N pollutants,and this study can provide new ideas for the improvement of wastewater treatment and other bio-ecological coupled processes.关键词
生物生态耦合/复合电磁场强化垂直流人工湿地/生活污水/微生物群落Key words
biological and ecology/composite electromagnetic field-reinforced vertical-flow constructed wetland/domestic sewage/microbial community分类
资源环境引用本文复制引用
徐超,刘云根,杨思林,郭凤倩,赵兴杰,殷发金,文明发..新型生物生态耦合工艺对生活污水的净化效果及微生物群落特征[J].环境工程学报,2025,19(3):578-585,8.基金项目
云南省科技计划重点项目(202301AS070042) （202301AS070042）
