Precipitation adsorption purification device for treatment of dye wastewater

Abstract

The invention discloses a precipitation adsorption purification device for treatment of dye wastewater. The device comprises a tank body, an annular water distributing pipe, a slow flow filtration structure, an adsorption purification structure, a water drainage pipe, an upper support plate, a second-stage precipitation chamber check valve, a state transition mechanism, a state transition conduit,a lower support plate, a first-stage precipitation chamber check valve, a lower support plate connection plate, an upper sealing gasket and a lower sealing gasket. Through the device, two stages of precipitation and two stages of filtration can be achieved, the two stages of precipitation can be achieved through a first-stage precipitation chamber and a second-stage precipitation chamber, and thetwo stages of filtration can be achieved through an intermediate layer of the slow flow filtration structure and upper-layer filler and middle-layer filler of the adsorption purification structure; solid particles in the dye wastewater can be removed sufficiently through precipitation and filtration in advance, so that the adsorption life and adsorption effect of the lower-layer filler are ensured; the device has a purifying function and a back-washing function, transition of the two functions can be achieved only through adjustment of the state transition conduit and the state transition mechanism, and the operation is simple.

Description

technical field [0001] The invention belongs to the field of dye wastewater treatment equipment, in particular to a precipitation adsorption purification device for dye wastewater treatment. Background technique [0002] Due to the insoluble solid particles that may be contained in the dye wastewater, the use of conventional filter devices is likely to cause blockage of the filter element and low filtration efficiency, which limits its application. Wheat grains are the main by-product of beer fermentation. Modified wheat grains can greatly improve their own adsorption capacity, showing unique advantages in the treatment of dye wastewater in the textile, printing and dyeing fields such as dyeing, coatings, and pigments. The document with application number 201711249788.X discloses a catalytic oxidation device for the treatment of high-concentration organic wastewater. The structure of the backwashing device is complicated. When flushing, the tank needs to be turned upside dow...

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Problems solved by technology

The document with the application number 201711249788.X discloses a catalytic oxidation device for the treatment of high-concentration organic wastewater. The structure of the backwashing device is complicated. When flushing, the tank needs to be turned upside down and discharged from the backwash outlet located above.

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