环境工程学报2025，Vol.19Issue(3)：614-623,10.DOI:10.12030/j.cjee.202410038
抽屉式生态滤池处理农村灰水的效能及微生物群落特征分析
Performance and microbiological community characteristics of a drawer-type ecological filter for treating rural graywater
摘要
Abstract
In this study,the performance and microbiological community characteristics of a newly designed drawer-type ecological filter(DEF)to treat rural graywater were investigated based on a modular adaptation of traditional ecological filters.The removal efficiencies of chemical oxygen demand(COD),ammonia nitrogen(NH4+-N),total Nitrogen(TN),total phosphorus(TP)and anionic surfactant(LAS)were studied.The influences of hydraulic load and carbon-nitrogen ratio on the treatment efficacy of graywater and the microbial community structure across different layers were particularly investigated.Results revealed that COD removal rates initially increased and then declined with the increase of hydraulic load and carbon-nitrogen ratio,while the NH4+-N removal rate decreased with an increase of the carbon-nitrogen ratio.The optimal COD removal rate was achieved at a hydraulic load of 2.625 m3·(m2·d)-1 and a carbon-nitrogen ratio of 11,while the highest NH4+-N removal rate occurred at a hydraulic load of 1.875 m3·(m2·d)-1.However,the NH4+-N removal rate decreased as the carbon-nitrogen ratio increased at constant hydraulic loads.Under the optimal operating conditions for DEF as follows:the hydraulic load of 1.875 m3·(m2·d)-1,and a carbon-nitrogen ratio of 11,with calamus planting,DEF could remove 89.92％for COD,89.37％for NH4+-N,57.93％for TN,43.11％for TP,and 72.27％for LAS,respectively.Additionally,high-throughput sequencing analysis of the microbial composition in different filter layers revealed diverse microbial species.Dominant phyla included Proteobacteria,Bacteroidota,while the predominant genera were Rhodanobacter and Defluviicoccus,which are effective in removing organic matter,nitrogen,and phosphorus.The variation in microbial composition at genus level across the filter layers facilitated layered degradation of pollutants,thus enhancing the efficiency of rural graywater treatment.关键词
农村污水/抽屉式生态滤池/水力负荷/碳氮比/微生物群落Key words
rural sewage/drawer-type ecological filter/hydraulic load/carbon nitrogen ratio/microbial community分类
资源环境引用本文复制引用
李引,李莹莹,张立秋,韩绮,高鹏,封莉..抽屉式生态滤池处理农村灰水的效能及微生物群落特征分析[J].环境工程学报,2025,19(3):614-623,10.基金项目
国家重点研发计划项目(2023YFC3706401) （2023YFC3706401）
