微纳米加气对再生水滴灌灌水器堵塞的影响
Effect of micro-nano aeration on clogging of emitters in reclaimed water drip irrigation
董聪慧 1李浩 2李瑞 2孙浩 2韩启彪 2李辉2
作者信息
- 1. 中国农业科学院农田灌溉研究所/河南省节水农业重点实验室/农业农村部节水灌溉工程重点实验室,河南 新乡 453002;中国农业科学院研究生院,北京 100081
- 2. 中国农业科学院农田灌溉研究所/河南省节水农业重点实验室/农业农村部节水灌溉工程重点实验室,河南 新乡 453002
- 折叠
摘要
为研究再生水滴灌时水中加入微纳米气泡对灌水器堵塞的影响,选用 4 种不同类型的灌水器,设置再生水不加气、再生水加气 2 个处理,以平均流量比(Dra)表征灌水器堵塞的发展程度,以克里斯琴森均匀系数(Cu)、统计均匀系数(Us)评价随试验运行时间推移滴灌系统的均匀性变化.结果表明:微纳米加气对再生水滴灌系统灌水器堵塞具有显著影响,相较于不加气处理,加气处理下4 种灌水器(E1,E2,E3,E4)的Dra值分别提高了 16.2%,24.4%,18.2%和 22.1%;加气处理下各灌水器的Cu和Us值大于不加气处理;加气对不同类型灌水器堵塞的控制效果也存在一定的差异,微纳米加气可降低灌水器的堵塞风险,延缓堵塞程度,延长灌水器的使用寿命,且对整个滴灌系统的均匀性有积极影响.试验结果可为再生水滴灌和加气滴灌技术的推广应用提供一定的技术支撑.
Abstract
To study the effect of micro-nano bubbles to aeration in water on the clogging of emitters during drip irrigation with reclaimed water,four different types of irrigators were selected.Two treat-ment methods of reclaimed water with non-aeration and reclaimed water with aeration were set in expe-riment.The average flow rate discharge ratio variation(Dra)was used to express the development de-gree of emitter clogging,the Christensen uniformity coefficient(Cu)and statistical uniformity coeffi-cient(Us)were used to evaluate the uniformity of drip irrigation system.The results show that micro-nano aeration has a very significant impact on the clogging of emitters in the reclaimed water drip irri-gation system.Compared with the non-aeration treatment,the Dra values of the four emitters(E1,E2,E3,E4)are increased by 16.2%,24.4%,18.2%and 22.1%,respectively.The Cu and Us values of all emitters after aeration treatment are also much larger than those of emitters without aeration treat-ment.There are also certain differences in the control effect of aeration on the clogging of different emitters.Therefore,micro-nano aeration can reduce the risk of clogging emitters,delay the clogging degree,extend the service life of emitters and have a positive impact on the uniformity of the whole drip irrigation system.The experiment results can provide some technical support for the promotion and application of reclaimed water drip irrigation and aerated drip irrigation technology.
关键词
灌水器/滴灌堵塞/微纳米加气/再生水Key words
emitter/drip irrigation clogging/micro-nano aeration/reclaimed water引用本文复制引用
基金项目
国家自然科学基金(52009137)
中国农科院农业科技创新工程项目(ASTIP202102)
河南省科技攻关计划(202102110279)
河南省科技攻关计划(202102110277)
中国农科院基本科研业务费专项院级统筹项目(Y2021YJ07)
中国农科院基本科研业务费专项院级统筹项目(Y2022XK12)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据