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Flow control microbubble-ozone coupling based water treatment device and water treatment method

A water treatment and ozone technology, applied in the field of water treatment, can solve the problems of low ozone solubility, restricting the application of ozone oxidation, and limited free radical yield

Active Publication Date: 2019-05-14
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low solubility of ozone in water and the limited yield of free radicals restrict the application of ozone oxidation in practical engineering.

Method used

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  • Flow control microbubble-ozone coupling based water treatment device and water treatment method
  • Flow control microbubble-ozone coupling based water treatment device and water treatment method
  • Flow control microbubble-ozone coupling based water treatment device and water treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0097] According to a preferred embodiment of the present invention, the jet section 67 includes two or more jet tubes 671 .

[0098] Wherein, the air flow is divided into two or more jets through the jet tube.

[0099] In a further preferred embodiment, the ratio of the inner diameter of the jet tube to the inner diameter of the buffer transition section 66 is (0.03˜0.05):1.

[0100] Among them, the preliminary turbulent air flow is derived by setting a jet tube with a small inner diameter, and the jet velocity is further increased, so that it is easy to achieve a higher Reynolds number (~10 5 ).

[0101]According to a preferred embodiment of the present invention, from the jet tube 671 to the ultimate self-excited pulse segment 68 , the inner diameter of the hollow cavity becomes larger.

[0102] The ratio of the inner diameter of the jet tube 671 to the inner diameter of the ultimate self-excited pulse segment 68 is (0.03˜0.06):1.

[0103] In a further preferred embodime...

experiment example

[0139] Experimental Example 1 Effect of Fluidic Components on the Solubility of Ozone

[0140] (1) Based on the device described in the present invention, the device formed by removing the ultraviolet radiation component and the ultrasonic component in the pool to be treated is the experimental object 1, (2) based on the experimental object 1, the device formed by removing the fluid control component therein The device is the experimental object 2, and the difference between the experimental object 1 and the experimental object 2 is: the experimental object 1 is equipped with a fluid control component, which is aeration of fluid control microbubbles; the experimental object 2 is not equipped with a fluid control component, which is a normal aeration.

[0141] Detect the ozone concentration in the pools of test object 1 and test object 2 to illustrate the influence of fluidic components on the mass transfer efficiency of ozone. The result is as image 3 shown.

[0142] Depend...

experiment example 2

[0147] Experimental Example 2 Removal Effect of Dissolved Organic Matter

[0148] The experimental raw water was taken from the discharge point where the secondary effluent of a certain sewage treatment plant was discharged to the river, and about 20 L of water samples passed through a 0.45 μm membrane filter (mainly to judge the removal effect of dissolved organic matter) were taken and entered into the device of the present invention for treatment.

[0149]Among them, the percentage of the ozone generator is adjusted to 50%. The ozone generator generates ozone at a flow rate of 1L / min, diverts the gas outlet, and controls the air intake of the subsequent connection to the flow control microbubble generating device to be 0.5-0.6L / min. Pressure 2Bar.

[0150] Ozone gas concentration is tested by iodometric method and it can be seen that the average concentration is 44.64mg / L. The total processing time of the experiment is 30 minutes, and the ozone concentration and water temp...

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Abstract

The invention discloses a flow control microbubble-ozone coupling based water treatment device and a water treatment method. The device comprises an oxygen supply source (1), an ozone generator (2), apressure adjustment filter component (4), a flow control component (6) and to-be-treated water tank (7) that are sequentially and mutually connected through flow guide pipes (9) and further comprisesan ultrasound component (11), wherein the to-be-treated water tank (7) is internally provided with ultraviolet radiation components (10). According to the device and the method, a microbubble technology is used for quickly improving ozone mass transfer efficiency and ozone solubility; at the same time, ultrasound is used for inducing microbubble breakage to generate free radicals; synchronous ultrasound cavitation pyrolysis and ultraviolet radiation promote ozone to generate the free radicals to improve productivity of the free radicals; the device and the method are applied to deep treatmentof secondary effluent of an urban sewage plant; an organic content of the secondary effluent is reduced; an organic matter structure of the secondary effluent is changed; and the biodegradability ofthe secondary effluent is improved.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to water treatment using ozone oxidation technology, in particular to a water treatment device and water treatment method based on fluidic microbubble-ozone coupling. Background technique [0002] Water resource regeneration and recycling is an important way to solve the current water supply crisis and curb the deterioration of the water environment. The research and development of water treatment technology is the key to this field. Surface water, groundwater, sewage, secondary effluent of sewage treatment plants, reclaimed water and other water bodies have a large amount of refractory biodegradable dissolved organic matter remaining. Traditional physical and chemical methods or the need to add persistent chemicals may easily cause secondary pollution, or Due to complex process and high cost, it is subject to various restrictions. [0003] Ozone oxidation has attracted much attentio...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/36C02F1/78C02F101/30
Inventor 范伟霍明昕
Owner NORTHEAST NORMAL UNIVERSITY
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