基于水力停留的河道驳岸生态海绵阶梯雨水处理系统的设计与实现

doi:10.19640/j.cnki.jtau.2025.06.005

Journal of Tianjin Agricultural University ›› 2025, Vol. 32 ›› Issue (6): 24-31.doi: 10.19640/j.cnki.jtau.2025.06.005

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Design and realization of eco-friendly rainwater treatment system based on hydraulic retention time for riverbank bulwark

Wang Chaoyang^1,2, Liu Xuan^1,2, Wang Letian^1,2, Zhang Qian^{1,2,Corresponding Author}

1. College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300392, China;
2. Tianjin Agricultural University-China Agricultural University Joint Smart Water Conservancy Research Center, Tianjin 300392, China

Received:2025-01-15 Published:2025-12-26

Abstract

Abstract: Controlling hydraulic retention time（Hydraulic Retention Time, HRT）is one of the important means to improve water quality in water treatment. This essay introduces an ecological sponge ladder rainwater treatment system based on the concept of hydraulic retention and sponge city, which is distributed on the revetment of the river. With the non-point source pollution caused by simulated different rain patterns in precipitation weather as the main research object, the data of the four indicators of water pH value, TDS, conductivity and ammonia nitrogen content before and after water treatment were compared. It was verified that the design of the system can effectively realize the purification and improvement of the water quality of non-point source polluted water. The results showed that through the operation and work of the ecological sponge cascade rainwater treatment system, the pH value of the water was adjusted to be neutral, the TDS value was reduced by 9.75%, the conductivity was reduced by 10.74%, ammonia nitrogen content was adsorbed by 33.98% and the eutrophic substances in the water can be adsorbed.

Key words: hydraulic retention, sponge city, riverbank protection, non-point source pollution, water treatment

CLC Number:

Wang Chaoyang, Liu Xuan, Wang Letian, Zhang Qian. Design and realization of eco-friendly rainwater treatment system based on hydraulic retention time for riverbank bulwark[J]. Journal of Tianjin Agricultural University, 2025, 32(6): 24-31.

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Design and realization of eco-friendly rainwater treatment system based on hydraulic retention time for riverbank bulwark

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