[1]王骞乐,荣懿,徐瑶瑶,等.农村户内生态渗井的除污特性及微生物种群结构[J].中国给水排水,2024,40(7):36-44.
　WANGQian-le,RONGYi,XUYao-yao,et al.Pollutants Removal Characteristics and Microbial Community Composition of Indoor Ecological Seepage Wells in Rural Areas[J].China Water & Wastewater,2024,40(7):36-44.
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农村户内生态渗井的除污特性及微生物种群结构

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第7期 页码: 36-44 栏目: 出版日期: 2024-04-01
Title:
Pollutants Removal Characteristics and Microbial Community Composition of Indoor Ecological Seepage Wells in Rural Areas
作者:
王骞乐1,2， 荣懿1， 徐瑶瑶1， 于优城3， 金鹏康1,4
（1.西安建筑科技大学 环境与市政工程学院，陕西 西安 710055；2.中核华辰建筑工程有限公司，陕西 西安 712000；3.陕西优斯达环境科技有限公司，陕西 宝鸡 721300；4.西安交通大学 人居环境与建筑工程学院，陕西 西安 710049）
Author(s):
WANG　Qian-le1，2， RONG　Yi1， XU　Yao-yao1， YU　You-cheng3， JIN　Peng-kang1，4
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. China Nuclear Huachen Construction Engineering Co. Ltd.， Xi’an 712000， China； 3. Shaanxi Urstar Environmental Technology Co. Ltd.， Baoji 721300， China； 4. School of Human Settlements and Civil Engineering， Xi’an Jiaotong University， Xi’an 710049， China）
关键词:
分散式农村灰水;  生态渗井;  无动力充氧;  A/O工艺
Keywords:
decentralized rural grey water;  ecological seepage well;  unpowered oxygenation;  A/O process
摘要:
针对农村生活灰水分布分散、不易集中处理的现状，设计了一种可有效去除灰水中碳、氮、磷的无动力户内生态渗井，以模拟生活灰水为处理对象，探究该系统对污染物的去除特性及其微生物种群结构。充氧效果试验结果表明，内均布管通气模式运行后期充氧效果变差，而外部双立管通气模式对各污染物的平均去除率均可稳定维持在较高水平，证明后者更利于硝化菌和反硝化菌分区生长；外部双立管生态渗井通气层位置与布水周期交互影响试验结果表明，通气层在第5层、布水周期为进3 min停9 min时，生态渗井对污染物的去除效果最好，COD、NH4+-N、TN和TP的平均出水浓度分别为14.85、0.14、4.67和0.47 mg/L，去除率分别为94.11%、97.91%、70.45%和73.92%；16S rRNA基因测序结果表明，运行稳定的生态渗井内部微生物群落分布从上到下有明显差异，反硝化菌群与硝化菌群分别集中在生态渗井的中上部与下部，聚磷菌的相对丰度在生态渗井中上部较高，呈现出高效脱氮除磷的分布状态。
Abstract:
This paper designed an unpowered indoor ecological seepage well for effectively removing carbon, nitrogen and phosphorus from grey water, and investigated the pollutant removal characteristics and microbial community composition of the system for treating simulated domestic grey water, so as to solve the problems of decentralized distribution of rural domestic grey water and its difficulty in centralized treatment. The oxygenation performance of the inner uniformly distributed pipe aeration mode became worse in the later period of operation, while the average removal rate of each pollutant under the external dual-riser ventilation mode could be stably maintained at a high level, indicating that the latter was more conducive to the zonal growth of nitrifying bacteria and denitrifying bacteria. The test results of the interaction between the position of aeration layer and the water distribution cycle of the external dual-riser ecological seepage well showed that the best pollutants removal performance of the ecological seepage well was obtained when the aeration layer was in the 5th layer and the water distribution cycle was inflow of 3 min with interval of 9 min. The average effluent COD, NH4+-N, TN and TP were 14.85 mg/L, 0.14 mg/L, 4.67 mg/L and 0.47 mg/L, and the removal rates were 94.11%, 97.91%, 70.45% and 73.92%, respectively. The results of 16S rRNA sequencing showed that the distribution of microbial communities in a stable ecological seepage well was significantly different from top to bottom. The denitrifying and nitrifying bacteria were concentrated in the middle-upper part and the lower part of the ecological seepage well, respectively, and the relative abundance of phosphorus accumulating bacteria was higher in the middle-upper part of the ecological seepage well. Their distribution accounted for the efficient nitrogen and phosphorus removal.
更新日期/Last Update: 2024-04-01