XIANG Ying,ZHANG Hong-tao,GAO Hong-zhou,et al.Sediment Environmental Characteristics and Ecological Dredging Project of Pipa Lake in Jiujiang[J].China Water & Wastewater,2021,37(14 14):142-150.
Sediment Environmental Characteristics and Ecological Dredging Project of Pipa Lake in Jiujiang
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
14 14
Page:
142-150
Column:
Date of publication:
2021-07-17
- Abstract:
- In view of the sediment pollution caused by sewage from surrounding factories, enterprises and residents in Pipa Lake, Jiujiang, this study puts forward a comprehensive solution of ecological dredging, black and odorous water elimination, and landscaping. Based on detection and analysis of the sediment pollution characteristics, the depth and scope of dredging is determined scientifically. Then the dredging methods and equipment are optimized to create landscape and dispose sediment. Finally the project effect is comprehensively evaluated. The extraction toxicity of the dredged bottom sludge after reduction and stabilization, meets the requirements of the Identification Standards for Hazardous Wastes—Identification for Extraction Toxicity (GB 5085.3-2007). The remaining water after sludge dewatering meets the second level criteria in Integrated Wastewater Discharge Standard (GB 8978-1996). The project alleviates the impact of construction drainage on the lake water quality. After the construction of ecological dredging project, the lake water quality has been significantly improved.
Last Update:
2021-07-19