KOUDian-liang,LIUCun-li,WEIJing.Case Study and Analysis of Water Environment Ecological Restoration of Mingyue Lake in Nanning[J].China Water & Wastewater,2025,41(18):106-111.
Case Study and Analysis of Water Environment Ecological Restoration of Mingyue Lake in Nanning
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第18期
Page:
106-111
Column:
Date of publication:
2025-09-17
- Abstract:
- Mingyue Lake in Nanning experienced severely silted up and had fragile aquatic ecosystem, poor self-purification capacity, and persistent black and odorous water conditions, with the water quality consistently categorized as worse than level Ⅴ standard, due to long-term impact of non-point source caused by combined drainage system and initial runoff from surrounding plots. To address these challenges, the Mingyue Lake water environment governance project adopted a comprehensive technical strategy integrating “source control and pollution interception, internal pollution management, and ecological restoration” to systematically advance the restoration process. While ensuring the water body’s flood conveyance function, the lake’s self-purification capacity is improved by reducing the normal water level to enhance water circulation. Additionally, pollution source control is achieved through upstream intercepting and mixed connection transformation of discharge outlets, end-of-pipe interception, and riverbed dredging. The project also integrated the sponge city concept, utilizing constructed wetlands to further treat effluent from the wastewater treatment plant, which was then reused as ecological replenishment water for Mingyue Lake. Exposed islands were reinforced and transformed into ecological islands to promote the recovery of the regional ecosystem. Furthermore, the successful cultivation of mangrove forests in the intertidal wetlands further enhanced the ecological functionality of the area. Through the implementation of these integrated measures, the water quality of Mingyue Lake has been stabilized at the level Ⅳ of surface water standard, yielding significant ecological and social benefits.
Last Update:
2025-09-17