Copolymerization flotation-sedimentation tank and water purification method

Abstract

The invention relates to a copolymerization flotation-sedimentation tank. The copolymerization flotation-sedimentation tank comprises a multi-channel folded plate copolymerization flocculation basin, a flotation-sedimentation tank and an air dissolving system, wherein the multi-channel folded plate copolymerization flocculation basin is used for realizing the coagulation and the copolymerization of flocculates and microbubbles; the flotation-sedimentation tank is connected to the rear end of the multi-channel folded plate copolymerization flocculation basin and is used for separating foamed flocculates from water flow and precipitating settleable flocculates which cannot float; and the air dissolving system is connected with a water outlet end of the flotation-sedimentation tank and is connected with the multi-channel folded plate copolymerization flocculation basin and the flotation-sedimentation tank to supply high-pressure backflow gas dissolved water to the multi-channel folded plate copolymerization flocculation basin and the flotation-sedimentation tank. According to the copolymerization flotation-sedimentation tank, the high-pressure backflow gas dissolved water is fed for three times, by virtue of organic combination with a flocculation process, a microbubble and flocculate copolymerized environment is created, and the produced foamed flocculates are stable and are not easily separated, so that the problems that the adhesion efficiency of particles is low, the trapping effect is not ideal, the adhesion of the foamed flocculates is instable, and the like of a traditional dissolved air flotation process are solved, and the coagulation, air floatation and sedimentation processes are organically combined and integrated; and the copolymerization flotation-sedimentation tank has prominent superiority in the treatment of water quality in high-algae, low-turbidity and burst high-turbidity reservoirs.

Description

technical field [0001] The invention relates to a copolymerization floating sink and a water purification method, belonging to the technical field of water treatment. Background technique [0002] At present, the problem of reservoir water pollution is becoming more and more prominent, among which algae pollution is particularly serious. At present, the reservoir water tends to have the characteristics of high algae in summer, low temperature and low turbidity in winter, and high turbidity in summer rainy season. As the degree of eutrophication of water sources increases year by year, algal blooms are becoming more and more serious, especially in spring and autumn when the temperature changes greatly, algae outbreaks occur from time to time, posing a certain threat to the operation of water plants and water supply safety. The density of algae is small, and it is difficult to effectively remove it by traditional coagulation, sedimentation, and filtration processes, which bri...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the above technologies, the present invention provides a copolymerization floating-sinking tank and a water purification method. In the copolymerizing floating-sinking tank, the reflux high-pressure dissolved air water is added three times, and the flocculation process is organically combined to create micro-bubbles and flocs. environment, the microbubbles adhere to the middle of the flocs, and the microbubbles participate in the coagulation process to play a coagulation effect. For problems such as low particle adhesion efficiency, unsatisfactory capture effect, and unstable adhesion of foam and floc, the coagulation, air flotation, and sedimentation processes are organically combined and integrated to deal with high algae, low turbidity, and sudden high turbidity. Reservoir water quality has outstanding advantages

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