滴灌用网式过滤器排污效果试验研究

Experimental Study on Sewage Discharge Effect of Drip Irrigation Net Filter

【目的】分析研究滴灌用网式过滤器的排污效果。【方法】通过对60目和80目滤网的排污压差及排污时间进行计算得到其理论计算值,然后根据试验结果详细分析了不同含沙量及不同进水流量情况下其对滤网排污效果的影响,并将其与理论值进行对比。【结果】排污压差理论计算值与实测值基本一致;排污曲线峰值均在10 s左右且在20~30 s时间段内趋于稳定,过滤器的排污效果显著。【结论】该结果与试验结果和实际运行结果基本符合,可用于实际过程中网式过滤器排污压差和排污时间的确定。

【Objective】This paper mainly analyzed and studied the sewage discharge effect of drip irrigation mesh filter.【Method】The theoretical calculation value was calculated by calculating the sewage pressure difference and the sewage discharge time of the 60-mesh and 80-mesh filters, and then the sediment discharge effect of the different sediment concentration and different influent flow were analyed according to the test results. We compared the experimental value with the theoretical value.【Result】①The theoretical calculation value of the sewage pressure difference was basically the same as the measured value;②The peak value of the sewage discharge curve was about 10 s and tends to be stable in the 20~30 s, and the sewage discharge effect is remarkable.【Conclusion】The result is basically consistent with the test results and the actual operation results, and can be used for determining the sewage pressure difference and the sewage discharge time of the mesh filter in the actual process.