SEDIMENT POLLUTION AND ECOLOGICAL DREDGING IN THE WANSHAN LAKE IN XISHAN DISTRICT, WUXI

WEI Qingfu; SHAO Xiaojing; CAI Jie; DONG Yaping

doi:10.13205/j.hjgc.202301021

Volume 41 Issue 1

Jan. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(1): 173-180

WEI Qingfu, SHAO Xiaojing, CAI Jie, DONG Yaping. SEDIMENT POLLUTION AND ECOLOGICAL DREDGING IN THE WANSHAN LAKE IN XISHAN DISTRICT, WUXI[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 173-180. doi: 10.13205/j.hjgc.202301021

Citation:

WEI Qingfu, SHAO Xiaojing, CAI Jie, DONG Yaping. SEDIMENT POLLUTION AND ECOLOGICAL DREDGING IN THE WANSHAN LAKE IN XISHAN DISTRICT, WUXI[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 173-180. doi: 10.13205/j.hjgc.202301021

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SEDIMENT POLLUTION AND ECOLOGICAL DREDGING IN THE WANSHAN LAKE IN XISHAN DISTRICT, WUXI

doi: 10.13205/j.hjgc.202301021

1. Shanghai Branch, Jiangsu Taihu Water Conservancy Planning & Design Institute Co., Ltd, Shanghai 200092, China;
2. Research Center for Monitoring and Environmental Sciences, Taihu Basin & East China Sea Ecological Environment Supervision and Administration Authority, Ministry of Ecology and Environment of the People's Republic of China, Shanghai 200125, China

Received Date: 2022-06-28
Available Online: 2023-03-23

Abstract

Abstract

As one of the important ecological restoration measures, sediment dredging has been widely used for the comprehensive restoration of the polluted water system in the Taihu Lake basin. In order to solve the regional environmental problems of the water system and further improve the quality of human settlements, we selected the north lake area of Jiuli Estuary in the Wanshan Lake in Xishan District in Wuxi and studied sediment pollution and ecological dredging. Our study determined the range and quantity of the dredging by analyzing the basic and present situation of sediment pollution in the Wanshan Lake with a full consideration of several limiting factors such as navigation, water demand and constructional depth. The results showed that the whole project achieved 568200 m³ of dredging with an area of 0.75 square kilometers and depth of 0.3 to 1.3 m, including 348200 m³ of sediment dredging, and 220,000 m³ of channel dredging. Several key aspects of techniques were considered for the deeper dredging in northern Wanshan Lake, including desilting requirement, dredging depth, dredging equipment selection and dredging process. As a whole, this study highlighted that ecological dredging effectively reduced the sediment pollution level and water quality of the Wanshan Lake, which laid a solid foundation for the restoration of the polluted water bodies.
- wetland restoration,
- the Wanshan Lake,
- sediment dredging,
- ecological silting,
- water management

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References(22)

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