Varying duty prevents blockking up constructed wetland quality of water purification structure

The utility model provides a varying duty prevents blockking up constructed wetland quality of water purification structure belongs to the water environment wetland field of restoreing. This structurenot only can prevent to block up but also can strengthened purification, through coupling suspension packing layer and little aeration equipment, improved the clogging property that prevents of wetland water detergent power and itself for the contaminated water body of the different loads of reply purifies. Include fluidization packing layer, fixed filler layer and aeration pipe on the purification structure follow extremely down in proper order, the dark 1.5m in purification structure pond 2m, is the thickness on fluidization packing layer, fixed filler layer 0.6m respectively 0.8m, the district's setting of intaking in the below on fixed filler layer, is provided with the aeration pipe in the district that intakes, reserve 0.2 below the aeration pipe 0.3m distinguish as sludge collection, the screen cloth is la