Effect of dynamic pressure on emitter clogging in drip irrigation system: The perspective of multiple fouling

IF 6.5 1区农林科学 Q1 AGRONOMY

Agricultural Water Management Pub Date : 2025-09-25 DOI:10.1016/j.agwat.2025.109837

Shaobo Xing , Kexin Du , Ningning Liu , Miao Li , Yue Wen , Luis Juana , Raúl Sánchez , Jinzhu Zhang , Zhenhua Wang

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Abstract

Enhancing the anti-clogging ability using dynamic pressure (DP) is an effective measure to improve the water use efficiency of drip systems. However, the response patterns of multiple fouling inside emitters to DP require further investigation. Therefore, a laboratory experiment was conducted to evaluate the effects of DP on the clogging performance and fouling characteristics of drip tapes, with constant pressure (CP) of 100 kPa as the control group. DP was applied in a trapezoidal waveform with a baseline pressure of 100 kPa, an amplitude of 30 kPa, and a cycle time of 90 s. The experiment spanned 64 days. Two types of non-pressure-compensating drip tapes and one type of pressure-compensating drip tape were tested, with performance evaluations conducted on 10 sampling points from each tape. The results demonstrated that, compared to CP, DP suppressed the fouling dry weight (DW) by 54.8 % (p < 0.01). And DP strikingly raised the discharge ratio and variation (Dra) by 32.2 % and Christiansen’s irrigation uniformity (CU) of drip system by 21.8 %. Meanwhile, DP effectively alleviated the inhibitory effects of fouling on Dra and CU. Additionally, there were markedly mutual promotion effects among multiple fouling (p < 0.01). DP inhibited the accumulation of particulates (59.7 %), precipitates (55.7 %), and biofouling (26.7 %) (p < 0.05) thereby improving Dra and CU. Overall, DP is a promising operational strategy to mitigate clogging for multiple fouling, thereby enhancing the water utilization efficiency of drip systems.

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动压对滴灌灌水器堵塞的影响：多重污染的视角

利用动态压力（DP）提高滴灌系统的抗堵塞能力是提高滴灌系统用水效率的有效措施。然而，多污染排放体内部对DP的响应模式还需要进一步研究。因此，本实验以100 kPa恒压（CP）为对照组，研究DP对滴灌带堵塞性能和结垢特性的影响。DP应用于梯形波形，基线压力为100 kPa，振幅为30 kPa，周期时间为90 s。实验持续了64天。测试了两种非压力补偿型滴漏带和一种压力补偿型滴漏带，每种滴漏带的10个采样点进行性能评估。结果表明，与CP相比，DP对污染干重（DW）的抑制效果为54.8% % （p <； 0.01）。DP显著提高了滴灌系统的流量比和变化率（Dra） 32.2% %，提高了克里斯蒂安森灌溉均匀度（CU） 21.8% %。同时，DP有效地缓解了污染对Dra和CU的抑制作用。多重污染之间存在显著的相互促进作用（p <； 0.01）。DP抑制了颗粒物（59.7 %）、沉淀物（55.7 %）和生物结垢（26.7 %）的积累（p <； 0.05），从而改善了Dra和CU。总的来说，DP是一种很有前途的操作策略，可以缓解多重污垢的堵塞，从而提高滴灌系统的水利用效率。

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

Agricultural Water Management 农林科学-农艺学

CiteScore

12.10

自引率

14.90%

发文量

648

审稿时长

4.9 months

期刊介绍： Agricultural Water Management publishes papers of international significance relating to the science, economics, and policy of agricultural water management. In all cases, manuscripts must address implications and provide insight regarding agricultural water management.