Study On Micro-irrigation Water Treatment Technology In Yellow River Pumping Irrigation Area In Ningxia

In Ningxia,precipitation is scarce and groundwater resources are insufficient.Irrigation relies heavily on the Yellow River Diversion Project.In order to increase irrigation water utilization coefficient,Ningxia vigorously develops micro-irrigation technology.Due to the large cement sand content and complex water quality of the Yellow River,it is easy to cause the blockage of micro-irrigation equipment and affect the normal use of micro-irrigation equipment.Reducing physical blockage caused by sediment,biological blockage caused by microorganisms,and chemical blockage induced by chemical material can extend the stable use time of microirrigation equipment,which has important practical significance for the use of microirrigation technology in the entire Ningxia irrigation area.According to the characteristics of the sediment content of the Yellow River in Ningxia,the paper calculates the sedimentation time of sediments with different particle sizes,and calculates and tests the surface load rate of the water storage sedimentation tank.Sand pond parameters.In the case of combined treatment with ozone and activated carbon,the effects of different flow rates and different levels of ozone addition on sand content,suspended solids,COD,and the total number of colonies in the water were studied.The concentration of ozone added and the appropriate flow rate.Provide scientific and technological support for the efficient utilization of water resources in irrigation area by lifting water from Yellow River in Ningxia and similar agricultural areas in the west.