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Method for preparing catalyst by using electrolysis waste water and electrolysis sludge

A technology for electroplating wastewater and electroplating sludge, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve environmental pollution, many factories, small scale, etc. problems, to achieve the effect of alleviating environmental pollution

Active Publication Date: 2011-09-14
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, due to many problems in my country's electroplating industry, such as many factories, small scale, low level of equipment and low level of pollution control, most of the electroplating sludge is still simply landfilled or even piled up randomly, causing serious pollution to the environment.

Method used

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  • Method for preparing catalyst by using electrolysis waste water and electrolysis sludge
  • Method for preparing catalyst by using electrolysis waste water and electrolysis sludge
  • Method for preparing catalyst by using electrolysis waste water and electrolysis sludge

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Effect test

Embodiment

[0023] The process and steps of this embodiment are as follows:

[0024] (1) Use industrial waste electroplating wastewater and sludge for pretreatment.

[0025] The main heavy metal content (mg / L) in electroplating wastewater is shown in Table 1 below:

[0026] Table 1 Contents of main heavy metals in electroplating wastewater (mg / L)

[0027] element

Ni

Zn

Cr

Cu

Fe

Co

Ca

Al

mg / L

2300.4

3200.6

946.8

3.4

9.7

3.4

18.7

8.9

[0028] The main heavy metal content (wt%) in the electroplating sludge is shown in Table 2 below:

[0029] Table 2 Contents of main heavy metals in electroplating sludge (wt%)

[0030] element

Ni

Zn

Cr

Cu

Fe

Co

Ca

Al

g / 100g dry sludge

4.8

6.5

3.5

0.6

50.4

0.2

23.4

1.7

[0031] (2) Mix the above-mentioned electroplating wastewater and electroplating sludge according to a certain ratio: per gram of dry ele...

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Abstract

The invention relates to a process method for preparing a catalyst by using electrolysis waste water and electrolysis sludge, and belongs to the technical field of waste recycling and environmental engineering. The process method comprises the following process steps: mixing, stirring, settling, separating solid from liquid, drying, calcining and the like. Through the coordinated treatment of electrolysis waste water and sludge, which are industrial wastes, and industrial CO2, the use of the process method has a great significance for the treatment of electrolysis waste water and the emission reduction and capture of green house gases, fully utilizes wastes and fulfils the aim of recycling; and a catalyst can be obtained, the environment pollution can be relieved, and the aim of treating waste with waste is fulfilled.

Description

technical field [0001] The invention relates to a process method for preparing a catalyst by utilizing electroplating wastewater and sludge, in particular to a process method for preparing a catalyst by co-processing electroplating sludge and carbon dioxide gas, and belongs to the technical field of waste resource utilization and environmental engineering. Background technique [0002] Because the electroplating industry uses a large amount of strong acid, strong alkali, heavy metal solutions, and even toxic and harmful chemicals such as chromium, cyanide, chromic anhydride, etc., waste water, waste gas and waste residues that pollute the environment and endanger human health are discharged in the process. a heavily polluting industry. Electroplating sludge is the discharge produced in the process of electroplating wastewater treatment, which contains a large amount of toxic heavy metals such as copper, cadmium, nickel, zinc, and chromium, and the composition is very complex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/86
Inventor 钱光人刘冲郑建昌余颖谷雨吴岳英
Owner SHANGHAI UNIV
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