Discussion on the Biological Clogging of Micro-irrigation System Using Reclaimed Water

Using the reclaimed water in micro-irrigation can not only save water for irrigation,but also lighten the pollution due to reuse of wastewater to irrigate directly for crops and the environment.However,the clogging possibility of the micro-irrigation system probably be increased in a way.The paper analyzes the water quality of the reclaimed water,the reason of the biological clogging of emitter,and the extent of the biological clogging of the micro-irrigation system.It is found that the organic contaminants and the microorganism in the reclaimed water cause the micro-irrigation system clogging,while the inorganic grain in the reclaimed water induces the emitter jamming.The clogging is related to the process of wastewater treatment and the reclaimed water quality,and the primary factors are pH,TSS,BOD5,which can be used to estimate the clogging risk of the micro irrigation system.The clogging problem of the micro-irrigation can be solved through improving water quality,reasonably selecting the filter,and using self-flushing emitter.