A CASE STUDY ON URBAN NON-POINT SOURCE POLLUTION CONTROL: THE HUIZHOU CHATING ECOLOGICAL REGULATION POND IN THE SHAHE RIVER BASIN OF THE DONGJIANG RIVER

LI Denghui; HUANG Bangjie; ZHANG Zongyao; LIU Xiaochen; DU Hongwei; SUN Hongwei; FANG Huaiyang; FANG Xiaohang

doi:10.13205/j.hjgc.202406005

Volume 42 Issue 6

Jun. 2024

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LI Denghui, HUANG Bangjie, ZHANG Zongyao, LIU Xiaochen, DU Hongwei, SUN Hongwei, FANG Huaiyang, FANG Xiaohang. A CASE STUDY ON URBAN NON-POINT SOURCE POLLUTION CONTROL: THE HUIZHOU CHATING ECOLOGICAL REGULATION POND IN THE SHAHE RIVER BASIN OF THE DONGJIANG RIVER[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(6): 35-42. doi: 10.13205/j.hjgc.202406005

Citation:

LI Denghui, HUANG Bangjie, ZHANG Zongyao, LIU Xiaochen, DU Hongwei, SUN Hongwei, FANG Huaiyang, FANG Xiaohang. A CASE STUDY ON URBAN NON-POINT SOURCE POLLUTION CONTROL: THE HUIZHOU CHATING ECOLOGICAL REGULATION POND IN THE SHAHE RIVER BASIN OF THE DONGJIANG RIVER[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(6): 35-42. doi: 10.13205/j.hjgc.202406005

Citation:

LI Denghui, HUANG Bangjie, ZHANG Zongyao, LIU Xiaochen, DU Hongwei, SUN Hongwei, FANG Huaiyang, FANG Xiaohang. A CASE STUDY ON URBAN NON-POINT SOURCE POLLUTION CONTROL: THE HUIZHOU CHATING ECOLOGICAL REGULATION POND IN THE SHAHE RIVER BASIN OF THE DONGJIANG RIVER[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(6): 35-42. doi: 10.13205/j.hjgc.202406005

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A CASE STUDY ON URBAN NON-POINT SOURCE POLLUTION CONTROL: THE HUIZHOU CHATING ECOLOGICAL REGULATION POND IN THE SHAHE RIVER BASIN OF THE DONGJIANG RIVER

doi: 10.13205/j.hjgc.202406005

1. Guangdong Key Laboratory of Water and Air Pollution Control, National Key Laboratory of Water Environment Simulation and Pollution Control, South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510535, China;
2. School of Environmental and Municipal Engineering, Lanzhou Jiao Tong University, Lanzhou 730070, China;
3. School of Environmental and Materials Engineering, Yantai University, Yantai 264000, China;
4. College of Environmental Sciences, Jinan University, Guangzhou 510630, China

Received Date: 2023-06-29
Available Online: 2024-07-11

Abstract

Abstract

To explore the seasonal efficiency of non-point source pollution in towns in South China, and deal with the low dissolved oxygen problem in the downstream tidal reach, this study took Huizhou Chating Ecological Regulation Pond (ERP) in Shahe River Basin, a tributary of Dongjiang River, as the monitoring object, and analyzed the migration and transformation process and treatment efficiency of pollutants along the river. The results showed that organic matter and phosphorus in ERP are mainly removed by sedimentation, filtration and retention, while nitrogen is mainly removed by biological nitrification and denitrification. In addition, the concentration of local dissolved oxygen in the pond is high, and the denitrification process is inhibited, resulting in NO^-₃-N accumulation. On the whole, under the condition of 0.9% wetland/catchment area ratio, the treatment efficiency of the ERP system was stable, and the average reduction rates of COD, NH⁺₄-N, TP and TN were 8.4%, 59.3%, 66.7% and 31.8% and 23.2%, 52.9%, 51.5% and 23.4%, respectively, in drought and rain seasons. Except for the limited removal capacity of TN and NO^-₃-N, the other water quality indexes in the effluent complies with the Category V standard in the Environmental Quality Standard for Surface Water (GB 3838—2002), and the study can provide technical support for the control of non-point source pollution in surrounding towns.
- ecological regulation pond wetland,
- non-point source pollution reduction technology,
- urban non-point source,
- treatment efficiency

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References(28)

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