The promotion of drip irrigation technology has been severely constrained by the emitter clogging caused by sediment deposition when using high-sediment loaded water. To fill this gap, a novel solution to the emitter clogging issue has been developed by allowing fine sediment particles to drain as much through the emitter as possible. The sediment deposition and discharge ratio, the sediment discharge rate, and the control threshold for particle size were used to determine the sediment discharge capacity (SDC) of the emitter. The result shows that almost all (> 99%) the fine-grained sediment (< 100 µm) can be discharged from the flow path of eight emitters, which varied greatly in different emitters. Specifically, pressure-compensating emitters (PCE) had higher SDC than non-pressure-compensating emitters (NPCE), with relative average flow rate increased by 16.9–33.0%. Meanwhile, the emitter flow path structure significantly affects SDC. The side wall of the flow path could be changed from a toothed structure to a swirl wash wall optimized structure, which would significantly improve the SDC. Furthermore, the SDC of NPCE was primarily affected by the flow path length (L) and the ratio of the cross-sectional area to the length (\(\sqrt{A}/L\)). Lastly, stronger emitter SDC closely related to both smaller particle size and concentration of water source. This study presents a fresh idea of sediment treatment for drip irrigation systems with high sediment content water and may contribute to the design of emitters with high sediment discharge capacity, and the effective management and filtration treatment of high-sediment loaded water.

由于使用高含沙量水时，因泥沙淤积而造成滴头堵塞，滴灌技术的推广受到严重制约。为了填补这一空白，我们开发了一种解决滴水器堵塞问题的新颖解决方案，即允许细小的沉积物颗粒尽可能多地通过滴水器排出。通过泥沙沉排比、泥沙排放速率和粒径控制阈值来确定灌水器的泥沙排放能力（SDC）。结果表明，8个灌水器流道中的细粒泥沙（<100μm）几乎全部（>99%）都能排出，但不同灌水器的细粒泥沙差异较大。具体来说，压力补偿灌水器 (PCE) 的 SDC 高于非压力补偿灌水器 (NPCE)，相对平均流量增加16.9%~33.0%。同时，滴头流路结构对SDC影响显着。流道侧壁可以由齿状结构改为旋流洗壁优化结构，这将显着提高SDC。此外，NPCE的SDC主要受流路长度（L）和横截面积与长度之比（\(\sqrt{A}/L\) )。最后，较强的排放源SDC与较小的颗粒尺寸和水源浓度密切相关。本研究提出了高含沙量滴灌系统泥沙处理的新思路，有助于高含沙量灌水器的设计以及高含沙水的有效管理和过滤处理。