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Choking cavitator for treating organic sewage

A technology of organic sewage and cavitation, which is applied in the direction of oxidation water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of low inlet pressure and cavitation not effectively collapsed, etc. Achieve the effect of high energy utilization rate, simple structure and strong oxidation ability

Inactive Publication Date: 2012-06-13
HUNAN UNIV OF TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low inlet pressure required for vortex cavitation, cavitation can occur in a wide range of water bodies (larger than jet cavitation, smaller than orifice cavitation), but the collapse of cavitation is similar to jet cavitation, and some cavitation is not obtained. effective collapse

Method used

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  • Choking cavitator for treating organic sewage
  • Choking cavitator for treating organic sewage
  • Choking cavitator for treating organic sewage

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Embodiment Construction

[0034] The embodiment of the present invention is illustrated by using three different cavitation generators to conduct a comparative test of phenol degradation ability under the same experimental conditions. The clogged cavitator is the present invention; the oscillating cavity cavitation nozzle is a nozzle with an oscillating cavity, and its outlet has a conical expansion section with a cone angle of 30°; the ordinary nozzle is an ordinary nozzle with a contraction angle of 60°.

[0035] 1) Implementation parameters of the present invention

[0036] like figure 1 , The water inlet joint 1, the nozzle body 2 and the blocking body 3 are connected with bolts, the blocking body 3 is connected with the back pressure cover 4 with threads, and the water inlet joint 1 is connected with the external water supply pipe with threads. Each connection part adopts the corresponding sealing form. The equivalent diameter of the annular nozzle is 2.8mm, the width of the annular gap is 0.2mm, ...

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Abstract

The invention relates to a hydraulic cavitation sewage treatment device, in particular to a choking cavitator for treating organic sewage. The choking cavitator is characterized by comprising an inflow joint, a nozzle body, a choking body and a back pressure cover, wherein the nozzle body is matched with the choking body, so that an annular nozzle is formed; a choking pipe is arranged in the choking body; the choking body is matched with the back pressure cover, so that a collapse cavity is formed; and a back pressure hole is formed radially on the back pressure cover. The choking cavitator is designed according to the chocking phenomenon of gas-liquid two-phase critical flow, sewage is jetted into the choking pipe in the choking body through the annular nozzle for generating air bubbles,a choking section is formed close to the outlet of the choking pipe, and air bubbles are collapsed in the back pressure cover after passing through the choking section. The choking cavitator has the characteristics of simple structure, large quantity of air bubbles, high cavitation strength, high organic sewage treatment capacity, high energy utilization ratio, freeness from secondary pollution and the like, and is particularly suitable for treating non-degradable toxic and organic pollutants.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and specifically provides a clogged cavitator for organic sewage treatment. Background technique [0002] With the rapid development of my country's economy, environmental problems are also highlighted. Due to the lack of effective treatment of industrial sewage and domestic sewage, it seriously pollutes the precious water resources that people rely on for survival. Conventional physical, chemical, and biological treatment methods are difficult to meet the technical and economic requirements for the treatment of "three-pollution" organic pollutants that are difficult to biodegrade and are extremely harmful to humans. Looking for economical, easy, and effective new water treatment methods Technology becomes a priority. [0003] Modern advanced oxidation technologies characterized by free radicals participating in oxidation reactions, such as supercritical water oxidation technology, electrochemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/30
Inventor 张凤华刘海锋唐川林徐俊超
Owner HUNAN UNIV OF TECH
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