Research on functional risk analyses and dredging planning for drinking water reservoir based on pollution investigation of sediment-water status

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-10-09 DOI:10.1007/s11270-025-08634-3

Qiuyi Ge, Chengli Zhu, Hong Zhang, Liang Zhu, Jun Cao, Genxiang Feng, Xin Huang, Chenfei Liu

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引用次数: 0

Abstract

Reservoirs constitute complex hydraulic engineering systems integrating flood control, water supply, and ecological conservation‌. The sediment-water status critically mediates reservoir functionality‌, requiring comprehensive assessment of operational status, risk diagnosis, and engineering interventions through three-dimensional monitoring of water-sediment-ecosystem dynamics‌.This study systematically evaluates the Fangbian Reservoir's ecosystem through integrated GIS-based spatial analysis‌, coupled estimation security assessment models (SMP-I/DDS-MD), and a tripartite water-sediment-ecology framework. Results reveal distinct pollution gradients: TN (>2000mg/kg) and OM accumulation in southern estuaries‌1, TP enrichment (300 mg/kg) near intakes with a critical depletion threshold at 30–40 cm sediment depth‌, and heavy metal gradients radiating from estuaries to reservoir center‌. Seasonal cyanobacterial dominance (46.1% biomass) during high-flow periods contrasted with rotifer prevalence in normal phases, while benthic macroinvertebrates exceeded 210 ind./m². A phased dredging protocol prioritized TP thresholds (≥1718.18/269.23 mg/kg) with depth-optimized excavation (0.2–0.8m) and hybrid sludge treatment (<60% moisture), achieving sediment stability (<10cm disruption) and resource recovery (landfill/agriculture)‌. These findings advance dynamic hydraulic engineering planning and management strategies balancing ecological security and engineering efficacy.

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基于沉积物-水体污染状况调查的饮用水水库功能风险分析及疏浚规划研究

水库是集防洪、供水、生态保护于一体的复杂水利工程系统。泥沙-水状态对水库功能起着至关重要的调节作用，需要通过水-泥沙-生态系统动态的三维监测对运行状态进行综合评估、风险诊断和工程干预。本文采用基于gis的空间综合分析、安全耦合评价模型（SMP-I/DDS-MD）和水-沙-生态三方框架，对边水库生态系统进行了系统评价。结果表明，南侧河口有明显的污染梯度：TN （>2000mg/kg）和OM积累，1，TP富集（300 mg/kg），在30-40 cm沉积物深度处出现临界枯竭阈值，以及从河口向水库中心辐射的重金属梯度。季节性蓝藻优势（46.1%生物量）在高流量期间与轮虫盛行在正常阶段形成对比，而底栖大型无脊椎动物超过210个/m2。分阶段疏浚方案优先考虑TP阈值（≥1718.18/269.23 mg/kg），深度优化挖掘（0.2-0.8m）和混合污泥处理（<；60%水分），实现沉积物稳定性（<；10cm破坏）和资源回收（填埋场/农业）。这些研究结果为平衡生态安全和工程效益的动态水利工程规划和管理策略提供了依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.