化粪池对城市排水系统水质水量及H2S排放的影响
The comprehensive influence of septic tank on urban drainage system from water quality,water quantity and hydrogen sulfide emission
颜山脊 1湛宇辰 1方蔼琳 2敖良根 3王胜 2潘伟亮1
作者信息
- 1. 重庆交通大学 环境水利工程重庆市工程实验室,重庆 400074
- 2. 重庆市市政设计研究院有限公司,重庆 400040
- 3. 重庆交通大学 环境水利工程重庆市工程实验室,重庆 400074;重庆市市政设计研究院有限公司,重庆 400040
- 折叠
摘要
选择重庆市主城区住宅小区实地调研,对住宅小区化粪池进出口的污水水质、流量、H2S 等指标进行实测,分析取消化粪池对排水系统和周边环境的综合影响.结果表明:①从流量看,无论是工作日还是周末化粪池前后流量相差不大,取消化粪池对进入市政管网的污水总量影响不大;②从水质看,化粪池对COD、BOD5、SS 有较高削减率,且COD/TN 的平均下降率为43%,COD/TP 的平均下降率为 38%;③从H2S看,化粪池内H2S 平均浓度为8.20 mg/m3,污水管道内H2S 平均浓度为2.70 mg/m3,取消化粪池可有效降低可被人体感官明显察觉的臭气逸散的风险,对改善小区整体环境有积极效益.
Abstract
The residential area in the main urban area of Chongqing was selected for field investigation.The sewage quality,flow rate,H2S and other indicators of the inlet and outlet of the septic tank in the resi-dential area were measured,and the impact of the abolition of the septic tank on the drainage system and the surrounding environment was analyzed.The result showed that①from the flow point of view,accord-ing to the results of the community flow,there was little difference in the flow before and after the septic tank on weekdays or weekends,and the cancellation of the septic tank had little effect on the total amount of sewage entering the municipal pipe network;②from the water quality,the septic tank had a higher re-duction rate for COD,BOD5 and SS.The average decline rate of COD/TN was 43%.The average decline rate of COD/TP was 38%;③ according to the measured results of H2S in the community,the average concentration of H2S in the septic tank was 8.20 mg/m3,and the average concentration of H2S in the sewage pipeline was 2.70 mg/m3.Canceling the septic tank could effectively reduce the risk of odor emis-sion that could be obviously perceived by human senses,and had a positive effect on improving the air quality of the community.
关键词
化粪池/排水系统/居住区污水/H2SKey words
septic tank/drainage system/residential sewage/H2S引用本文复制引用
基金项目
重庆市科技局项目(cstc2017shmsA200011)
重庆市科技局项目(CSTB2022NSCQ-MSX1438)
重庆市建设科技项目(城科字2021第7-7)
企业委托项目(E1220238)
企业委托项目(E1220356)
出版年
2024
NETL
NSTL
万方数据