地下水人工补给过程介质堵塞及控制研究进展

A review on the progresses in medium clogging and its control during groundwater artificial recharge

人工补给作为解决地下水超采及其环境负效应的有效措施,在全球得到广泛应用.但人工补给过程中的介质堵塞问题对补给效率、运行成本及工程寿命有着显著不利影响.在收集整理已有研究资料的基础上,对人工补给类型,过程中介质堵塞机理、预测、控制和治理方法进行了详细归纳和总结.分析表明,介质堵塞受到介质、水源物化特征和水文地球化学条件等因素影响;堵塞预测方法有水质指标法、经验公式法、数学模型法;堵塞的预防目前以水质控制为主;堵塞的治理需综合物理和化学方法.尽管有关人工补给的多种技术已日益成熟,但结合介质空间差异特征和水源条件复杂性开展的人工补给促渗技术还需进一步研究.

Artificial recharge has been widely utilized as an effective method for solving groundwater over-extraction and its adverse environmental impacts.However,the clogging issue during artificial recharge is one of the factorslimiting its application;because the clogging affects the infiltration rate,running cost and engineering longevity of recharge facilities.We have reviewed to summarize the current state of artificial recharge types,clogging mechanisms,clogging prediction and approaches for clogging prevention and control.This review suggests that the medium clogging is basically dependent on medium attributes,physical and chemical characteristics of water source and hydrogeochemical conditions.And clogging prediction methods include water quality index,empirical formula and mathematical model;while clogging prevention is mainly based on water quality control,and clogging treatment requires a combination of physical and chemical methods.Current approaches for artificial recharge are increasingly well-developed,but the infiltration promotion technologies of artificial recharge based on the spatial differences in infiltration media and the complexity of water source conditions need further investigation.