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| Study on drip irrigation anti-clogging experiment of Yellow River water treated with inorganic adsorbent |
| YANG Shaodong1, QU Zhongyi1,2*, ZHANG Weifeng3, LI Zhe1, DING Yanhong1, JIA Yonglin1, FAN Qing4 |
| 1. Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; 2. Institute of Irrigation and Drainage in Cold and Arid Regions, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; 3. Youjingtian(Beijing)International Water Environment Research Center Ltd, Beijing 100080, China; 4. Inner Mongolia Linhe Yellow Rever National Wetland Park Management Center, Bayannur, Inner Mongolia 015000, China |
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Abstract To solve the sediment deposition problem when the Yellow River water was used in drip irrigation, three water mixtures with high, medium and low solid concentrations were blended by using sediment harvested from the Yellow River. Then, these water mixtures were filtered in a sediment separation device by using an inorganic adsorbent of brand “Water Dream” to carry out clogging simulation tests. The variation state of water quality was monitored and the anti-clogging tests on drip irrigation emitters were conducted. The variation of flow rate along two drip irrigation tapes, the uniformity and the relative average flow rate in the drip irrigation system were observed. The results showed that after the water mixtures were treated by the inorganic adsorbent, the water turbidity and various pollutant indexes at different sediment concentrations were improved, especially, the total nitrogen, total phosphorus, COD, BOD and turbidity were decreased by 23.9%, 40.3%, 47%, 38.3% and 97.8%. respectively. Simulation field drip irrigation was performed by employing 8 irrigation trials. According to the changes in irrigation uniformity and average irrigation flow rate in two kinds of drip irrigation tape tested, it was known that the inlaid patch drip irrigation tape for large flow rate should be adopted in practical applications.
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Received: 20 September 2018
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