[1]封林波.重金属污染河道底泥清淤与处理处置及其效果评估[J].中国给水排水,2026,42(16):172-179.
FengLinbo.Engineering Practice and Effectiveness Evaluation of Dredging, Treatment and Disposal of Heavy Metal-polluted River Sediment[J].China Water & Wastewater,2026,42(16):172-179.
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FengLinbo.Engineering Practice and Effectiveness Evaluation of Dredging, Treatment and Disposal of Heavy Metal-polluted River Sediment[J].China Water & Wastewater,2026,42(16):172-179.
重金属污染河道底泥清淤与处理处置及其效果评估
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第42卷
期数:
2026年第16期
页码:
172-179
栏目:
出版日期:
2026-08-17
- Title:
- Engineering Practice and Effectiveness Evaluation of Dredging, Treatment and Disposal of Heavy Metal-polluted River Sediment
- Keywords:
- heavy metal pollution; river sediment dredging; classified safe disposal; ecological restoration; effectiveness evaluation
- 摘要:
- 针对历史采矿活动导致的城镇小流域河道底泥重金属污染与生态退化问题，构建并实践了一套集污染阻控、防洪能力提升与生态修复于一体的综合治理模式。以江西省崇义小江流域下牛岗至水口段（4.632 km）为研究区，实施以底泥清淤（31.40万m3）为核心的综合治理工程，系统整合河道底泥清淤与运输、基于粒径的分类安全处置与资源化、堤岸生态修复、渣场整治与生态封场等关键技术。监测结果表明，河道底泥中铜、锌、砷、镉等主要重金属含量由治理前超过《土壤环境质量 农用地土壤污染风险管控标准（试行）》（GB 15618—2018）的风险筛选值与管制值，普遍降至风险筛选值以下水平，其中镉、砷的去除率均为99.5%以上；河道水体主要指标（砷除外）达到《地表水环境质量标准》（GB 3838—2002）的Ⅲ类标准，渣场周边地下水各项指标均满足《地下水质量标准》（GB/T 14848—2017）的Ⅲ类要求；河道过水断面由治理前的10~90 m拓宽至40~110 m，行洪能力提升20%~100%，两岸植被覆盖率从15%恢复至85%。研究证实，“清淤-精准筛分-资源化利用-生态修复”的综合治理模式能够同步实现多重治理目标。
- Abstract:
- To address the heavy metal contamination and ecological degradation in river sediments of small watersheds affected by historical mining activities, this study developed and implemented an integrated remediation model that synergistically achieves pollution control, enhanced flood control capacity, and ecological restoration. Focusing on a 4.632 km section (from Xianiugang to Shuikou) of the Xiaojiang River Basin in Chongyi County, Jiangxi Province, a comprehensive project centered on sediment dredging (314 000 m3) was carried out. The project systematically integrated key technologies, including river sediment dredging and transport, particle-size-based classification for safe disposal and resource utilization, bank restoration and ecological rehabilitation, as well as residue disposal site remediation and ecological capping. Post-remediation monitoring results demonstrated that the concentrations of major heavy metals (e.g. copper, zinc, arsenic, cadmium) in the river sediments, which previously exceeded the risk screening and intervention values stipulated by the Soil Environmental Quality—Risk Control Standard for Soil Contamination of Agricultural Land (GB 15618-2018), were generally reduced to levels below the risk screening values. Notably, the removal rates for cadmium and arsenic exceeded 99.5%. Key indicators of river water quality (except for arsenic) met the class Ⅲ standards of the Environmental Quality Standards for Surface Water (GB 3838-2002), and all monitored groundwater indicators around the disposal site complied with the class Ⅲ requirements of the Standard for Groundwater Quality (GB/T 14848-2017). The river’s cross-section width was increased from 10-90 m before remediation to 40-110 m, enhancing the flood conveyance capacity by 20% to 100%. Furthermore, the vegetation coverage on both banks recovered from 15% to over 85%. This study confirms that the integrated technical model of dredging-precise screening-resource utilization-ecological restoration can achieve multiple remediation objectives simultaneously.
相似文献/References:
[1]胡明,薛娇,严玉林,等.北京市特征河流沉积物重金属污染评价与来源解析[J].中国给水排水,2021,37(23):73.
HU Ming,XUE Jiao,YAN Yu-lin,et al.Assessment and Trace Back to Source of Heavy Metal Pollution in Typical River Sediments in Beijing[J].China Water & Wastewater,2021,37(16):73.
更新日期/Last Update:
2026-08-17