| Effect of water quality of Yellow River after sedimentation on emitter clogging in the drip irrigation system |
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| DOI：10.7606/j.issn.1000-7601.2016.02.41 |
| Key Words: drip irrigation water quality emitter clogging Yellow River water sedimentation efficiency filtration efficiency |
| Author Name | Affiliation | | ZHANG Xiao-jing | College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China | | YU Jian | Institute of Water Conservancy Science Research, Hohhot, Inner Mongolia 010018, China | | MA Tai-ling | College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
Sanya University, Sanya, Hainan 572022, China | | SONG Yao-xing | Institute of Water Conservancy Science Research, Hohhot, Inner Mongolia 010018, China | | LU Jun-ping | College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China | | DU Hui-hui | Sanya University, Sanya, Hainan 572022, China | | WANG Fan | College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China |
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| Abstract: |
| The sedimentation and filtration efficiencies of water-quality indexes including turbidity, the total amount of bacteria, chlorophyll A, total nitrogen, total phosphorus were analyzed in this study utilizing the monthly monitoring data from May to October in 2013 and from July to November in 2014 for the three typical sedimentation tanks in Ruyi lake, Linye lake and Chaoyang lake in Wuhai city. Through combined investigations in field and by scanning electron microscope on blockage, the cause for emitter clogging was discussed after treated with Yellow River water undergone horizontal flow sedimentation and net type filter. The results showed that the sedimentation and filtration efficiencies of turbidity for each tank were relatively high. The sedimentation efficiency of turbidity in Ruyi Lake was the highest and its average rate was 63%. The filtration efficiency of turbidity in Chaoyang Lake in 2013 was higher than other tanks, and its rate was 60.53%. The filtration effect of water-quality index was generally inferior for each tank. Flocculent structure that was formed by small particles and microorganisms was the main cause for emitter clogging by the Yellow River water undergone sedimentation and filtration. Moreover, improvement scheme was thereby proposed for the original sedimentation and filtration measures and laminated sand filter in pump house was employed after the one and two-stage sedimentation. |
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