DISCHARGE LAW OF DOMESTIC WASTEWATER AND POLLUTANTS DISCHARGE OF URBAN RESIDENTS IN SOUTH CHINA

WU Bin; ZHANG Ming; LI Yiping; WANG Haiying; ZHOU Yuxuan; ZHENG Ke; ZHAO Sisuo; CHEN Huangjun

doi:10.13205/j.hjgc.202212026

Volume 40 Issue 12

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(12): 196-201,280

WU Bin, ZHANG Ming, LI Yiping, WANG Haiying, ZHOU Yuxuan, ZHENG Ke, ZHAO Sisuo, CHEN Huangjun. DISCHARGE LAW OF DOMESTIC WASTEWATER AND POLLUTANTS DISCHARGE OF URBAN RESIDENTS IN SOUTH CHINA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 196-201,280. doi: 10.13205/j.hjgc.202212026

Citation:

WU Bin, ZHANG Ming, LI Yiping, WANG Haiying, ZHOU Yuxuan, ZHENG Ke, ZHAO Sisuo, CHEN Huangjun. DISCHARGE LAW OF DOMESTIC WASTEWATER AND POLLUTANTS DISCHARGE OF URBAN RESIDENTS IN SOUTH CHINA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 196-201,280. doi: 10.13205/j.hjgc.202212026

Citation:

WU Bin, ZHANG Ming, LI Yiping, WANG Haiying, ZHOU Yuxuan, ZHENG Ke, ZHAO Sisuo, CHEN Huangjun. DISCHARGE LAW OF DOMESTIC WASTEWATER AND POLLUTANTS DISCHARGE OF URBAN RESIDENTS IN SOUTH CHINA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 196-201,280. doi: 10.13205/j.hjgc.202212026

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DISCHARGE LAW OF DOMESTIC WASTEWATER AND POLLUTANTS DISCHARGE OF URBAN RESIDENTS IN SOUTH CHINA

doi: 10.13205/j.hjgc.202212026

1. College of Environment, Hohai University, Nanjing 210024, China;
2. Gaochun District Water Authority Bureau, Nanjing 211300, China;
3. Nanning Exploration & Survey Institute, Nanning 530022, China

Received Date: 2021-12-14
Available Online: 2023-03-23

Abstract

Abstract

In order to investigate the domestic life sewage discharge situation of urban residents in South China and the change of water quality inside the plot, taking Nanning as an example, three representative living quarters were selected to monitor the water quality and quantity of the building sewage pipes and outlets throughout the day. The results showed that the peak period of water volume throughout the day was 7:00—9:00, 11:00—13:00, and 20:00—23:00, and the peak period of water quality throughout the day was 6:00—9:00, 11:00—13:00 and 18:00—21:00, sewage pollutants discharge was closely related to the characteristics of residential communities. Nitrogen and phosphorus pollutants in domestic sewage were highly homologous, more than 80% of which come from human excretion. There was no correlation between detergent content and phosphorus compounds’ concentration. After the septic tank, the water quality was still attenuating. After the septic tank, the COD of every 1 km sewage pipeline could be reduced by 34 mg/L, and the reduction rate was 11.7%. Based on the water quality of building sewage pipes and daily water consumption per capita, the per capita domestic sewage discharge coefficient of COD, NH₃-N, TN, TP, BOD₅, and LAS of the selected urban residents was 52.2, 7.1, 8.7, 0.61, 25.4, 0.49 g/(p·d), respectively.
- building sewage pipe,
- pollution discharge regularity,
- water quality reduction,
- per capita domestic pollutant discharge

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