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| DOI：10.13522/j.cnki.ggps.2021336 |
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| Biological Clogging of Emitters in Drip Irrigation Using Reclaimed Water: A Review |
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DONG Conghui, HAN Qibiao, LIU Weining, LI Hao, SUN Hao, LI Hui
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1. Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Laboratory of Water-saving Agriculture of Henan Province/Key Laboratory of Water-saving Irrigation Engineering, Ministry of Agriculture, Xinxiang 453002, China;
2. Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China;
3. Xinxiang Muye District Agriculture and Rural Bureau, Xinxiang 453002, China
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| Abstract: |
| Drip irrigation has been increasingly used not only for watering cash crops but also for stable crops in water-scarcity regions. One common problem in drip irrigation is emitter clogging, especially when using reclaimed water which is rich in nutrients and microbes. This paper reviews the recent development in biological clogging of the emitters, including its cause and mitigation. It is based on literature review of the extensive publications over the past decades. We review the current research situation both nationally and internationally and outline the cause of the clogging when using reclaimed water for irrigation, especially the underlying mechanisms. We also review the measures for anti-clogging the emitters. From these, we discuss the potential development in this area, including remediation of biological clogging using chlorination, adjusting flow rate and drip irrigation frequency, and the applications of these specific measures to different regions and situations. |
| Key words: drip irrigation; reclaimed water; emitter; clogging |
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