A kind of electroplating sludge chromium element extraction device and method equipped with ultrasonic generator

A technology of ultrasonic generator and electroplating sludge, which is applied in the direction of improving process efficiency, etc., can solve the problems of low processing efficiency, long reaction time, low extraction rate of chromium element, etc., and achieve improved processing efficiency, high-purity extraction, and shortened reaction time the effect of time

Active Publication Date: 2022-05-06
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: in the process of large-scale industrial treatment of electroplating sludge in the prior art, the reaction time is long, the treatment efficiency is low and the extraction rate of chromium element is low

Method used

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  • A kind of electroplating sludge chromium element extraction device and method equipped with ultrasonic generator
  • A kind of electroplating sludge chromium element extraction device and method equipped with ultrasonic generator
  • A kind of electroplating sludge chromium element extraction device and method equipped with ultrasonic generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] like figure 1 An electroplating sludge chromium element extraction device equipped with an ultrasonic generator as shown includes an electroplating sludge pretreatment tank 1, three ultrasonic cavitation reactors 2 arranged below the electroplating sludge pretreatment tank 1, and A separation assembly 3 for separating sludge at the lower end of the ultrasonic cavitation reactor 2, and a reaction extraction device 4 communicating with one end of the separation assembly 3;

[0045] like figure 2 As shown, the electroplating sludge pretreatment tank 1 includes a horizontally disposed treatment tank body 10, a water inlet pipe 11 arranged on the treatment tank body 10, and a first stirring shaft 12 arranged inside the treatment tank body 10 , the first stirring blade fan 13 evenly arranged on the first stirring shaft 12, and the drive motor 14 arranged on the treatment tank body 10 for driving the first stirring shaft 12;

[0046] The lower end surface of the treatment t...

Embodiment 2

[0061] The difference with embodiment 1 is:

[0062] The cone angles of the upper cone surface 211 and the lower cone surface 212 are both 55°.

[0063] like Figure 5 The ultrasonic cavitation reaction chamber 21 is provided with a vibrating diaphragm assembly 25 inside;

[0064] like Figure 5 , Image 6 As shown, the vibrating diaphragm assembly 25 includes a first fixed plate 250 evenly arranged on the inner wall of the upper conical surface 211 and a second fixed plate 251 evenly arranged on the inner wall of the lower conical surface 212. The first vibrating membrane 252 on the plate 250, and the second vibrating membrane 253 arranged on the second fixed plate 251 and extending in the horizontal direction.

[0065] A rotating connecting ring 213 is disposed inside the lower conical surface 212; a mud scraper 214 is movable on the rotating connecting ring 213.

[0066] Wherein, the first vibrating membrane 252 and the second vibrating membrane 253 are both made of sp...

Embodiment 3

[0069] Adopt the electroplating sludge chromium element extracting device carrying ultrasonic generator of embodiment 1 to carry out the method for chromium element extraction, comprise the following steps:

[0070] S1, adjust the water content

[0071] First add electroplating sludge into the electroplating sludge pretreatment tank 1, then add clear water into the treatment tank body 10 through the water inlet pipe 11, so that the liquid-solid ratio in the electroplating sludge pretreatment tank 1 is 4ml: 1g, the first stirring Blade fan 13 stirs;

[0072] S2. Ultrasonic cavitation

[0073] Open the sealing cover plate 101 to allow the electroplating sludge to enter the ultrasonic cavitation reaction chamber 21, spray a sodium hydroxide solution with a mass concentration of 35% into the electroplating sludge through the first nozzle 241, and start the first ultrasonic generator 221 and the second ultrasonic generator simultaneously. Two ultrasonic generators 223; when the p...

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Abstract

The invention relates to the technical field of sludge treatment, and discloses an electroplating sludge chromium element extraction device and method equipped with an ultrasonic generator; the extraction device includes an electroplating sludge pretreatment tank, and a plurality of electroplating sludge pretreatment tanks are arranged The ultrasonic cavitation reactor below is set at the lower end of the ultrasonic cavitation reactor to separate the separation assembly for sludge, and a reaction extraction device connected to one end of the separation assembly; the extraction method includes the following steps: S1, adjusting the containing Water volume; S2, ultrasonic cavitation; S3, separation and extraction of chromium element; the present invention can effectively shorten the reaction time, improve the processing efficiency, and can greatly improve the extraction of chromium element in the process of large-scale industrial treatment of electroplating sludge Rate.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a device and method for extracting chromium from electroplating sludge equipped with an ultrasonic generator. Background technique [0002] Electroplating sludge refers to the sediment mainly composed of copper, chromium and other heavy metal hydroxides produced in the process of electroplating wastewater treatment, with complex components; due to the large amount of electroplating wastewater, complex components, high COD, and high heavy metal content, if not Arbitrary discharge after treatment will cause serious environmental pollution. During the treatment of electroplating wastewater, a large amount of electroplating sludge will also be formed. The heavy metal components in these electroplating sludge have high thermal stability and are easy to migrate. If not handled properly, it is easy to cause secondary pollution. [0003] Electroplating sludge contains a large a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/32C22B7/00
CPCC22B34/32C22B7/008Y02P10/20
Inventor 黄凯华张文超胡小英杜建伟李彦希张明杨田雨贺框徐晓玲王李张政
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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