Spiral suspended type red mud membrane bag adsorption and dephosphorization apparatus

Abstract

The invention provides a spiral suspended type red mud film bag absorption dephosphorization device, which consists of film bags, a rack and a floater. The film bags are hung under the rack through ropes. The floater is connected with the top of the rack. The insides of the film bags are provided with supports and are filled with modified red mud. Seen from upside, the film bags hung under the rack are distributed in a spiral shape from inside toward outside and with respect to the arrangement of heights. The device carries out dephosphorization absorption through the film bags wrapping red mud, effectively avoids filtration and recovery of the red mud after absorption, is simple and convenient in operation, keeps the shapes of the film bags under water pressure and ensures the red mud in the film bags uniformly distributed in various layer of a sewage poll, thereby achieving the maximum absorption dephosphorization effect of the red mud. In addition, the device makes full use of the action of water flow on the film bags and the floatation of the floater in water to allow the film bags to move freely under the action of the floater and the water flow so as to dephosphorize uniformly through absorption, thereby reducing capital investment.

Description

technical field [0001] The invention relates to a device for removing phosphorus from sewage by using red mud as an adsorbent, belonging to the technical field of sewage treatment. Background technique [0002] Phosphorus removal by adsorption is one of the most effective dephosphorization methods for eutrophic water bodies, and the research on red mud, especially modified red mud, on phosphorus adsorption is currently a hot and frontier field. The adsorption application of red mud is currently divided into two types. One is to burn red mud ceramsite and sprinkle it in sewage. The firing process requires a lot of money, manpower and material resources, which is relatively complicated; the other is to use red mud For modification, such as using commonly used acid modifiers or heating methods to modify, the modified red mud is directly added to the sewage for adsorption. With the continuous improvement of the modification method, the latter method has more and more room for d...

AI Technical Summary

Problems solved by technology

The adsorption application of red mud is currently divided into two types. One is to burn red mud ceramsite and sprinkle it in sewage. The firing process requires a lot of money, manpower and material resources, which is relatively complicated; the other is to use red mud Modification, such as using commonly used acid modifiers or heating methods to modify, the modified red mud is directly added to the sewage for adsorption

With the continuous improvement of the modification method, the latter method has more and more room for development, and the gradual improvement of the adsorption effect has attracted more and more attention. Inconvenience

Images