XIA Wen-lin,HUANGWei.Determination on Dredging Depth of River Sediment in the Comprehensive Treatment Project of Black and Odorous Water Bodies[J].China Water & Wastewater,2022,38(6):44-47.
黑臭水体综合治理工程中河道底泥清淤深度的确定
- Title:
- Determination on Dredging Depth of River Sediment in the Comprehensive Treatment Project of Black and Odorous Water Bodies
- Keywords:
- black and odorous water body; dredging depth of sediment; heavy metals; evaluation of sediment pollution; criterion of flood protection and storm drainage
- 摘要:
- 河道底泥的淤积不仅会造成河道过流断面不足，而且底泥中污染物的释放还会对水体造成严重污染，尤其是底泥重金属超标的河道，会对生态环境造成严重的破坏，因此河道清淤在黑臭水体综合治理工程中必不可少。以江门高新区麻园黑臭水体综合治理工程为例，对河道底泥清淤深度的确定进行了详细分析。实践表明，对于河道底泥清淤深度的确定，应结合水质考核目标、底泥污染评价、防洪排涝标准及河道边坡的稳定性等因素，按相关规范布点分析，确保按需清淤。
- Abstract:
- The deposition of river sediment will cause the insufficient flow section， and the release of pollutants in river sediments may further cause serious pollution to the water bodies. Specially, the excessive accumulation of heavy metals in sediment poses a serious damage to the ecological environment. Thus, the river dredging is a routine necessity in the black and odorous water body treatment. Taking the comprehensive treatment project of the black and odorous water body for Mayuan River in Jiangmen High-tech Zone as an example, the determination of the depth of river sediment dredging was analyzed in detail. This work reveals that the determination of the dredging depth of river sediment should be based on factors such as water quality assessment, sediment pollution evaluation, flood control and drainage standards, and the stability of the river slope. Moreover, the analysis shall be conducted according to the relevant regulations to ensure that the dredging is on-demand.
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