Copolymerization flotation-sedimentation tank and water purification method

A technology of copolymerization and air flotation tank, which is applied in chemical instruments and methods, flotation water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. To avoid problems such as unsatisfactory collection effect, to achieve the effects of prolonging the collision adhesion time, improving adhesion efficiency, and enhancing copolymerization

Active Publication Date: 2016-04-20
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 flo

Method used

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  • Copolymerization flotation-sedimentation tank and water purification method

Examples

Experimental program
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Example Embodiment

[0032] Example 1,

[0033] Such as figure 1 As shown, the copolymerization flotation tank of the present invention includes: a multi-channel folded plate copolymerization flocculation tank for coagulation and copolymerization of flocs and microbubbles; a flotation tank connected to the rear end of the multi-channel folded plate copolymerization flocculation tank to achieve foam Separation of flocs and water flow, sedimentation of settling flocs that cannot be air-floated; and, a dissolved air system connected to the water outlet of the flotation tank, said dissolved air system being connected to the multi-channel folded plate copolymerization flocculation tank and the flotation tank The connection provides reflux high-pressure dissolved gas water for the multi-channel folded plate copolymerization flocculation tank and the float-sink tank.

[0034] The multi-channel folded plate copolymerization flocculation tank includes a different-wave folded-board copolymerization flocculatio...

Example Embodiment

[0040] Example 2,

[0041] In a certain reservoir, during the high algae season in summer, the water quality of high algae is present, and its algae content is 5.0×10 7 Pieces / L, turbidity is 15NTU.

[0042] Purification of the water in the reservoir using the copolymerization floatation tank described in Example 1 includes the following steps:

[0043] S1, adding coagulant polyaluminum ferric chloride (PAFC), the dosage is 4.0mg / L (with Al 3+ Calculate), from the inlet pipe 1 into the multi-channel folded plate copolymerization flocculation tank, the water flows through the different wave folded plate copolymerization flocculation pool 2, the same wave folded plate copolymerization flocculation pool 3 and the flat plate folded plate copolymerization flocculation pool 4, the different wave folded plate copolymerization flocculation pool 2. The flow velocity in the same wave folded plate copolymerization flocculation tank 3 and flat plate folded plate copolymerization flocculation po...

Example Embodiment

[0046] Example 3.

[0047] In a certain reservoir, in winter, it presents the characteristics of low temperature and low turbidity, and its algae content is 5.0×10 5 Pieces / L, turbidity is 3.5NTU.

[0048] The water in the reservoir is purified by the copolymerization floatation tank described in Example 1, and the difference from Example 2 is:

[0049] In step S1, the dosage of coagulant polyaluminum ferric chloride (PAFC) is 5.0 mg / L (with Al 3+ meter).

[0050] The water after the above treatment has a total algae content of 2.0×10 5 A / L, the turbidity reaches 0.75NTU.

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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...

Claims

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Application Information

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IPC IPC(8): C02F1/24C02F1/52
CPCC02F1/24C02F1/5281
Inventor 王永磊刘宝震张克峰王宁王珊杜振忠贾瑞宝宋武昌李儒存孙中训李佳宁王萌萌
Owner SHANDONG JIANZHU UNIV
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