| 引用本文: | 赵蕊婷,严新军,王雪虎.塔里木河高浊度水处理中絮凝剂的优选试验[J].灌溉排水学报,2025,44(5):100-105. |
| ZHAO Ruiting,YAN Xinjun,WANG Xuehu.塔里木河高浊度水处理中絮凝剂的优选试验[J].灌溉排水学报,2025,44(5):100-105. |
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| 摘要: |
| 【目的】对塔里木河高浊度水处理中絮凝剂开展试验优选。【方法】基于5种絮凝剂单一及复配使用的优选试验，探究絮凝剂对泥沙的去除效果。在综合考虑絮凝沉降效果、成本等因素后，利用层次分析法、熵权法各自权重进行耦合后得到各参数的综合权重，优选细粒泥沙去除的最佳组次。【结果】单一使用絮凝剂，阴离子聚丙烯酰胺PAM(-)的沉降速度最快，投放质量浓度为0.03 g/L的沉降效果最好；复配使用絮凝剂，聚合氯化铝PAC和阳离子聚丙烯酰胺PAM(+)配比1∶1、投放质量浓度0.01 g/L的沉降效果最优；复配絮凝剂的综合效果优于单一施用絮凝剂。【结论】使用合适的絮凝剂能够解决灌溉水源中含沙量过高的问题，可为微灌工程运行提供参考。 |
| 关键词: 细颗粒泥沙；灌溉用水；沉降效果；复配絮凝剂；综合权重 |
| DOI：10.13522/j.cnki.ggps.2023591 |
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| Evaluating the efficacy of various flocculants for sediment removal from high-turbidity water for micro-irrigation systems |
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ZHAO Ruiting, YAN Xinjun, WANG Xuehu
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1. College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China;
2. Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Urumqi 830052, China
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| Abstract: |
| 【Background】Emitter clogging is a common issue in micro-irrigation systems, and effective sediment removal from irrigation water is crucial for maintaining system performance. This study experimentally assessed the performance of various flocculants in accelerating the sedimentation of muddy water.【Method】Water collected from the Tarim River was used for the experiments. The sediment removal efficiency of five flocculants, applied both individually and in combination, was compared. To identify the optimal flocculant formulation, a comprehensive evaluation was conducted using the Analytic Hierarchy Process (AHP) combined with the entropy weight method, considering both performance and cost.【Result】When applied individually, anionic polyacrylamide PAM(-) achieved the best sediment removal, with optimal performance observed at a concentration of 0.03 g/L. Among compound treatments, a 1∶1 mixture of polyaluminum chloride (PAC) and cationic polyacrylamide PAM(+) showed the most effective sedimentation at a concentration of 0.01 g/L. Overall, combined flocculant applications outperformed single-agent treatments.【Conclusion】Mixing flocculants at an appropriate ratio can significantly enhance the sedimentation of high-turbidity water, thereby reducing emitter clogging in micro-irrigation systems. These findings offer practical guidance for improving irrigation water quality through the effective use of flocculants. |
| Key words: fine-grained sediment; irrigation water; sedimentation effect; compound flocculant; comprehensive weighting |
