排灌机械工程学报2016，Vol.34Issue(4)：357-361,5.DOI:10.3969/j.issn.1674-8530.15.0103
引黄滴灌砂石过滤器滤料过滤性能
Sand filter performance on drip irrigation with the Yellow River
摘要
Abstract
The Yellow River undisturbed sediment was used to collocate the test water.The filter per-formance was tested with homogeneous quartz of different particle sizes under different filtration veloci-ties.The results show that the head loss increases with the time increasing.The water head loss is on the rise when the flow velocity increases under the same filter material particle size.The water turbidity decreases with the time increasing.The water turbidity decreases after an increase with flow velocity increasing.The particles of different sizes which are adsorbed by the filter surface or pass through the gaps increase with the velocity increasing,therefore the head loss increases with the increasing of the speed and degree of clogging.The particle filter surface area decreases with particle size increasing and the gaps among the filter particles increasing.The retention and adsorption capacity of filter material for the particles decrease and the head loss can be reduced.Since the filter material loses the ability to re -adsorb other impurities,after running for some time various impurities were attached to the filter material surface,the turbidity removal decreases.This research provides a theoretical basis for the op-timal filter mode selection for the Yellow River water drip irrigation.关键词
砂石过滤器/引黄滴灌/石英砂/过滤性能/水头损失Key words
sand filter/drip irrigation with the Yellow River/quartz/filter performance/head loss分类
农业科技引用本文复制引用
张杰武,冯吉,徐飞鹏,莫芳媛..引黄滴灌砂石过滤器滤料过滤性能[J].排灌机械工程学报,2016,34(4):357-361,5.基金项目
国家自然科学基金资助项目（51321001，51479197）；水利部公益性行业专项资助项目（201401078）；内蒙古自治区科技重大专项资助项目 （）
