ANALYSIS OF TEMPORAL AND SPATIAL DISTRIBUTION OF RURAL DOMESTIC SEWAGE AND STATUS OF TREATMENT FACILITIES IN PLAIN RIVER NETWORK AREA

LIU Xing; LIU Wen-li; JIANG Xia; GUO Ji-feng; HUANG Wei; LIU Rui; ZHANG Cong

doi:10.13205/j.hjgc.202012007

Volume 38 Issue 12

Apr. 2021

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(12): 38-44

REN Ya-qi, ZHAO Wen-ji, LI Xiao-xiu, JIN Jian-nan, WANG Li-li, WU Gao-feng, WU Zhi-hong. DISCUSSION ON RELATIONSHIP BETWEEN DUST FALL AND DISTANCE FROM SOURCE IN A BEIJING CONSTRUCTION WASTE DUMP IN SPRING[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(3): 33-38. doi: 10.13205/j.hjgc.202003006

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LIU Xing, LIU Wen-li, JIANG Xia, GUO Ji-feng, HUANG Wei, LIU Rui, ZHANG Cong. ANALYSIS OF TEMPORAL AND SPATIAL DISTRIBUTION OF RURAL DOMESTIC SEWAGE AND STATUS OF TREATMENT FACILITIES IN PLAIN RIVER NETWORK AREA[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(12): 38-44. doi: 10.13205/j.hjgc.202012007

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ANALYSIS OF TEMPORAL AND SPATIAL DISTRIBUTION OF RURAL DOMESTIC SEWAGE AND STATUS OF TREATMENT FACILITIES IN PLAIN RIVER NETWORK AREA

doi: 10.13205/j.hjgc.202012007

1. National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental, Beijing 100012, China;
2. School of Architecture and Engineering, Key Laboratory of Subsurface Hydrology and Ecology in Arid Areas, Ministry of Education, Chang'an University, Xi'an 710054, China;
3. State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China

Received Date: 2019-08-28
Available Online: 2021-04-23

Abstract

Abstract

The study selected 160 inlet and outlet water treatment facilities in rural areas under Jiaxing City as the research object, and analyzed the spatial and temporal distribution characteristics of rural domestic sewage pollutants and the status of treatment facilities in order to improve the efficiency of treatment facilities. The results showed that the nitrogen and phosphorus pollution in rural domestic sewage in Jiaxing was more serious than organic pollution. The annual average values of ρ(COD), ρ(TP), ρ(TN) and ρ(NH₄⁺-N) were 142.23, 4.02, 44.19 and 27.74 mg/L, respectively. And there was a large optimization space for the treatment effect of each sewage treatment facility. The annual removal rates of COD, TP, TN and NH₄⁺-N were 50.5%, 29.7%, 36.8% and 51.7%, respectively. The spatial distribution of rural domestic sewage gradually decreased from west to east and from north to south. And the temporal distribution was in the sequence of winter > spring > autumn > summer. Correlation analysis showed that there was a significant positive correlation between COD, TP, TN and NH₄⁺-N (P<0.01), and the correlation coefficient was between 0.688±0.946. The annual carbon-nitrogen ratio and NH₄⁺-N/TN ratio of the influent water in the facility are 3.21 and 68.9%, respectively. The traditional single A²/O treatment process was proved not ideal for the treatment of low-carbon source wastewater. and the treatment effect of sewage treatment facilities can be further enhanced by combining process design, standardizing operation management, and strengthening post-monitoring work in the future.
- rural domestic sewage,
- temporal and spatial distribution,
- treatment facility,
- removal rate

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