黄河水滴灌过滤设备性能研究进展及发展趋势OA
Research Progress and Development Trend of Performance of Drip Irrigation Filtration Equipment for Yellow River Water
为解决黄河水中细小泥沙颗粒(粒径<0.05 mm)引发的滴灌灌水器堵塞问题,选择适配的过滤器一直是重要关注点之一.以黄河水滴灌过滤器为研究对象,通过文献调研,系统回顾了各类过滤器在不同工况下的工作性能试验研究动态,梳理了影响过滤器过滤性能与水力性能的主要因素,总结了各因素对过滤效果及水力特性的一般影响规律与作用机制,最终提出了亟待进一步研究的问题与方向.影响过滤器工作性能的主要因素有黄河水泥沙特性及过滤器工作参数.相比于其他类型过滤器,砂石过滤器对黄河水的水质净化效果最显著,但小粒径滤料搭配高浓度原水或小粒径泥沙更易诱发表层过滤现象;网式与叠片式过滤器的过滤精度随目数增大而增大,但同时会加速滤饼堵塞与流道堵塞进程,导致水头损失增大;组合型过滤器则表现出更小的水力损失和更优的综合过滤效果.当黄河水泥沙含量较高时,现有过滤设备对其中粒径小于0.05 mm的泥沙颗粒去除效果仍不理想.未来应进一步探索新型滤料、不同组合过滤模式在不同黄河水泥沙特性条件下的过滤工作性能,并借助CFD技术揭示关键影响因子对过滤性能的作用机理,以期为构建适宜的黄河水滴灌灌水器防堵塞技术体系奠定坚实理论与实践基础.
In order to address the clogging problem of drip irrigation emitters caused by fine sediment particles(particle size<0.05 mm)in the Yellow River water,the selection of suitable filters has remained a critical consideration.Taking the Yellow River water drip irrigation filter as the research object,through literature research,the experimental research trends of the working performance of various filters under different working conditions were systematically reviewed.The main factors affecting the filtration performance and hydraulic performance of the filter were identified.The general influence patterns and mechanism of various factors on the filtration effect and hydraulic characteristics were summarized.Finally,the issues and directions requiring further investigation were put forward.The main factors affecting filter performance are the sediment characteristics of the Yellow River water and the operating parameters of the filter.Compared with other types of filters,the sand filter have the most significant effect on the water purification effect of the Yellow River,but the small particle size filter material with high concentration of raw water or small particle size sediment is more likely to induce surface filtration phenomenon.The filtration accuracy of mesh and disc filters increases with the increase of mesh number,but simultaneously,this accelerates the process of filter cake blockage and flow channel blockage,resulting in increased head loss.The combined filter shows smaller hydraulic loss and better comprehensive filtration effect.When the sediment content of the Yellow River is high,the existing filtration equipment still falls short in removing sediment particles finer than 0.05 mm Future research should further explore the filtration performance of novel filter media and combined filtration modes under varying sediment characteristics of Yellow River water,and employ CFD technology to reveal the mechanisms by which key influencing factors affect filtration performance..These findings aim to provide a solid theoretical and practical foundation for developing effective anti-clogging technology systems for drip irrigation emitters using Yellow River water.
白起;夏天;张春雨;徐利岗;王建东
宁夏大学土木与水利工程学院,宁夏 银川 750021||宁夏黄河水联网数字治水重点实验室,宁夏 银川 750021宁夏大学土木与水利工程学院,宁夏 银川 750021||宁夏黄河水联网数字治水重点实验室,宁夏 银川 750021宁夏大学土木与水利工程学院,宁夏 银川 750021||宁夏黄河水联网数字治水重点实验室,宁夏 银川 750021宁夏大学土木与水利工程学院,宁夏 银川 750021||宁夏黄河水联网数字治水重点实验室,宁夏 银川 750021中国农业科学院农业环境与可持续发展研究所,北京 100081
农业科技
黄河水滴灌滴头堵塞过滤器水力性能过滤性能
drip irrigation with Yellow River wateremitter cloggingfilterhydraulic performancefiltration performance
《节水灌溉》 2026 (9)
41-51,11
国家自然科学基金项目(52469013).
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