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Abstract Drip irrigation applying surface water with high sand concentration leads to a higher risk of composite fouling, which is the most complex material type of clogging. Thus, understanding the… Click to show full abstract
Abstract Drip irrigation applying surface water with high sand concentration leads to a higher risk of composite fouling, which is the most complex material type of clogging. Thus, understanding the dynamic variation and formation mechanism of composite fouling is the prerequisite for controlling clogging substance and establishing rational anti-clogging method to promote high-sand surface water for drip irrigation. In this paper, the components of the composite fouling were studied through the emitter composite fouling experiment under three drip irrigation frequencies. The results indicated that the particulate fouling composition (solid particle, SP), crystallization fouling composition (CaCO3 and MgCO3 precipitate, C-MP), and biofouling composition (extracellular polymeric substance, EPS, and microbial activity, MA) grew as the system operated. Significant positive linear correlations were obtained among different compositions (R2>0.82, p
Journal Title: Agricultural Water Management
Year Published: 2019
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