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A hydrodynamic cavitation device for increasing the concentration of cavitating radicals

A hydraulic cavitation and free radical technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of organic pollutants with unsatisfactory effects, small number of generated, and free radicals generated Wait for the question

Inactive Publication Date: 2016-05-04
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of traditional Venturi tubes in sewage treatment is greatly limited. The most important performance is that the number of free radicals generated is too small, especially the number of hydroxyl radicals is too small, resulting in unsatisfactory treatment of organic pollutants. , so this method of sewage treatment has not been widely used in practical engineering

Method used

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  • A hydrodynamic cavitation device for increasing the concentration of cavitating radicals
  • A hydrodynamic cavitation device for increasing the concentration of cavitating radicals
  • A hydrodynamic cavitation device for increasing the concentration of cavitating radicals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 1 and figure 2 , The hydraulic cavitation device for increasing the concentration of cavitation radicals in this embodiment is composed of a converging nozzle 1, a hydraulic cavitation chamber 2, a bluff body 3, an adjustment plate 4, and a fixed rod 5.

[0035] The hydraulic cavitation chamber 2 of this embodiment is a cylindrical structure with a diameter of 76mm placed horizontally. The left end side of the hydraulic cavitation chamber 2 is processed with a water inlet, and the bottom of the right end is processed with a water outlet. There is a converging nozzle 1, the diameter of the water inlet of the converging nozzle 1 is D 进 20mm, outlet diameter D 出 8mm, namely D 进 =2.5D 出 , so that the converging nozzle 1 and the hydraulic cavitation chamber 2 form a first-stage Venturi tube structure. In order to prevent the fluid from entering the hydraulic cavitation chamber 2 and staying in the dead corner, the inner wall of the water inlet end of the hyd...

Embodiment 2

[0053] A nozzle 1 is installed on the water inlet of the hydraulic cavitation chamber 2 of this embodiment, and the nozzle 1 is a convergent structure, forming a convergent fluid passage, and the diameter of the water inlet is D 进 20cm, outlet diameter D 出 10cm, D 进 / D 出 for 2.

[0054] The bluff body 3 installed in the hydraulic cavitation chamber 2 is a rotating body formed by a closed curve formed by the end-to-end connection of curve 1, curve 2, and curve 3 in a clockwise direction around the central axis of the hydraulic cavitation chamber 2. ;

[0055] The linear equation of curve 1 is: (x 1 -a 1 ) 2 +(y 1 -b 1 ) 2 =9 2

[0056] a 1 is the horizontal coordinate value of the center of the curve 1, the value is 12, and the unit is mm;

[0057] b 1 is the longitudinal coordinate value of the center of the curve 1, the value is 9, and the unit is mm;

[0058] The central angle of curve 1 is 190°.

[0059] The linear equation of curve 2 is: (x 2 -a 2 ) 2 +(...

Embodiment 3

[0070] The inner wall of the water inlet end of the hydraulic cavitation chamber 2 of this embodiment is processed into a circular arc surface structure, the arc radius of the longitudinal section is 39mm, and the central angle is 62°. A converging nozzle 1 is installed on the water inlet of the hydraulic cavitation chamber 2, and the diameter of the water inlet is D 进 20cm, outlet diameter D 出 4cm, D 进 / D 出 for 5.

[0071] The bluff body 3 installed in the hydraulic cavitation chamber 2 is a rotating body formed by a closed curve formed by the end-to-end connection of curve 1, curve 2, and curve 3 in a clockwise direction around the central axis of the hydraulic cavitation chamber 2. ;

[0072] The linear equation of curve 1 is: (x 1 -a 1 ) 2 +(y 1 -b 1 ) 2 =9 2

[0073] a 1 is the horizontal coordinate value of the center of the curve 1, the value is 12, and the unit is mm;

[0074] b 1 is the longitudinal coordinate value of the center of the curve 1, the val...

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Abstract

The invention relates to a hydrodynamic cavitation device for increasing the cavitation free radical concentration. The hydrodynamic cavitation device comprises a hydrodynamic cavitation cavity. A convergence type spraying nozzle is arranged at the water inlet of the hydrodynamic cavitation cavity. A flow blocking body and an adjusting plate are arranged in the hydrodynamic cavitation cavity. The flow blocking body is a rotating body, wherein the rotating body is formed when a closed curve formed by connecting a curve 1, a curve 2 and a curve 3 end to end in the clockwise direction rotates around a central shaft of the hydrodynamic cavitation cavity by one circle. High-pressure water flow is blocked to form high-pressure jet flow in the hydrodynamic cavitation cavity so that cavitation bubbles can be formed, the cavitation bubbles waver to a high-pressure area according to the effect that a flow body flows along a wall, the cavitation bubbles crack when blocked by the inner wall and the adjusting plate in the high-pressure area, a lot of free radicals are generated, and therefore the capacity of degrading organic pollutants through hydrodynamic cavitation is effectively improved, and the aim of improving and enhancing the cavitation waste water treatment effect is achieved; the hydrodynamic cavitation device is simple in structure, high in efficiency, convenient to operate, easy to manage, low in cost and suitable for industrial application.

Description

technical field [0001] The invention belongs to the technical field of research on liquid fluid cavitation generating devices, and in particular relates to a hydraulic cavitation device for increasing the concentration of cavitation free radicals by using hydraulic cavitation to degrade and treat organic pollutant wastewater. technical background [0002] According to the "China Environmental Status Bulletin" issued by the State Environmental Protection Administration, the water quality evaluation of nearly 140,000 kilometers of rivers in the country shows that nearly 40% of the river water has been seriously polluted; 41% of the seven major river systems in the country are inferior to Class V water quality. %. According to another important survey released by the State Environmental Protection Administration, among the 131 counted rivers flowing through cities in my country, 36 are seriously polluted, 21 are heavily polluted, and 38 are moderately polluted. [0003] Due to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00
CPCC02F1/34
Inventor 沈壮志郭建中
Owner SHAANXI NORMAL UNIV