Abstract:There is a great change in the rural domestic sewage quantity in China. At present, no suitable peak variation factor for the rural domestic sewage quantity has been put forward by the researchers, which has brought significant difficulties and limitations in the design, operation and maintenance of rural sewage treatment projects. In this study, the acquisition approach of the peak variation factor for rural domestic sewage quantity in China was discussed, and the peak variation factor of domestic sewage quantity in the current drainage design code was also analyzed and summarized. The results showed that the peak variation factor of sewage quantity was directly provided in the current drainage design code, and the daily and hourly variation coefficients of water supply are also provided directly. However, the peak variation factors of sewage quantity in the current drainage design code are not suitable for the design, operation and maintenance of rural sewage treatment projects(Q≤432 m3·d?1). Therefore, based on the observed data of the change in Beijing rural domestic sewage quantity, the empirical relationship between the peak variation factor (Kz) and the project scale under the conditions of low industrial wastewater ratio, no industrial wastewater and full-time water supply was determined through statistical analysis. The data table for the peak variation factor was provided within the rural domestic sewage quantity range of 1~432 m3·d?1. This study can provide reference for the design, operation and maintenance of rural sewage treatment project. Key words:rural domestic sewage/ peak variation factor/ rural sewage treatment projects.
图1总变化系数随农村生活污水量变化 Figure1.Variation of peak variation factor with rural domestic sewage quantity
表1《室外排水设计规范》中综合生活污水量总变化系数 Table1.Peak variation factor of comprehensive wastewater quantity in Code for Outdoor drainage Design
平均流量/(m3·d?1)
Kz
平均流量/(m3·d?1)
Kz
432
2.3
8 640
1.6
1 296
2.0
17 280
1.5
3 456
1.8
43 200
1.4
6 048
1.7
86 400
1.3
平均流量/(m3·d?1)
Kz
平均流量/(m3·d?1)
Kz
432
2.3
8 640
1.6
1 296
2.0
17 280
1.5
3 456
1.8
43 200
1.4
6 048
1.7
86 400
1.3
下载: 导出CSV 表2《镇(乡)村排水工程技术规程》中综合生活污水量总变化系数 Table2.Peak variation factor of comprehensive wastewater quantity in Technical Specification for Drainage in Town and Village
Beijing Capital Qingyuan Environmental Technology Co. Ltd., Beijing 100049, China Received Date: 2020-01-15 Accepted Date: 2020-06-17 Available Online: 2020-09-05 Keywords:rural domestic sewage/ peak variation factor/ rural sewage treatment projects Abstract:There is a great change in the rural domestic sewage quantity in China. At present, no suitable peak variation factor for the rural domestic sewage quantity has been put forward by the researchers, which has brought significant difficulties and limitations in the design, operation and maintenance of rural sewage treatment projects. In this study, the acquisition approach of the peak variation factor for rural domestic sewage quantity in China was discussed, and the peak variation factor of domestic sewage quantity in the current drainage design code was also analyzed and summarized. The results showed that the peak variation factor of sewage quantity was directly provided in the current drainage design code, and the daily and hourly variation coefficients of water supply are also provided directly. However, the peak variation factors of sewage quantity in the current drainage design code are not suitable for the design, operation and maintenance of rural sewage treatment projects(Q≤432 m3·d?1). Therefore, based on the observed data of the change in Beijing rural domestic sewage quantity, the empirical relationship between the peak variation factor (Kz) and the project scale under the conditions of low industrial wastewater ratio, no industrial wastewater and full-time water supply was determined through statistical analysis. The data table for the peak variation factor was provided within the rural domestic sewage quantity range of 1~432 m3·d?1. This study can provide reference for the design, operation and maintenance of rural sewage treatment project.
下载: 
点击查看大图
