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Processing method for organotin wastewater containing high concentration chloride

A treatment method, organotin technology, applied in the direction of oxidized water/sewage treatment, etc., can solve problems such as separation and difficult cleaning of fiber balls, achieve the effect of increasing oxygen pressure and oxidation speed, and reducing treatment costs

Inactive Publication Date: 2009-07-01
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ultrasonic degreaser is mainly used for the removal of a large amount of low-concentration organic matter in waste water, but it is difficult to separate the adsorbed organic matter from the fiber ball, which makes it difficult to clean the fiber ball, and the separated organic matter also needs further treatment.

Method used

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  • Processing method for organotin wastewater containing high concentration chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Take 3L organic tin wastewater with an organic matter content of 2812mg / L, put it into an autoclave, add 30g of catalyst, start stirring, start heating, when the temperature reaches 90°C, start to pass oxygen, and at a temperature of 200°C, the reaction 90min. After the reaction is over, close the oxygen inlet valve, turn off the heating, release the pressure and discharge the material. The feed liquid is initially filtered with a 100-mesh stainless steel screen, and the initial filter residue is returned to use. The filtrate is vacuum filtered and the suction filter residue is stored. The content of organic matter in the filtrate is 10.69 mg / L, and the removal rate of organic matter is calculated to be 99.62%, and the chlorine salt in suction filtration is recovered.

Embodiment 2

[0015] Example 2: Take 3L of organotin waste water with an organic content of 996mg / L, put it into an autoclave, add 20g of the catalyst recovered in Example 1, start stirring, start heating, when the temperature reaches 90°C, start to pass oxygen, at a temperature of 150°C ℃, react for 60min. After the reaction is over, close the oxygen inlet valve, turn off the heating, release the pressure and discharge the material. The feed liquid is initially filtered with a 100-mesh stainless steel screen, and the initial filter residue is returned to use. The filtrate is vacuum filtered and the suction filter residue is stored. The content of organic matter in the filtrate is 8.86 mg / L, and the removal rate of organic matter is calculated to be 99.11%, and the chlorine salt in suction filtration is recovered.

Embodiment 3

[0016] Example 3: Take 3L of organotin wastewater with an organic matter content of 227mg / L, put it into an autoclave, add 10g of the catalyst recovered in Example 2, start stirring, start heating, when the temperature reaches 30°C, start to pass oxygen, at a temperature of 100°C °C for 1 hour. After the reaction is over, close the oxygen inlet valve, turn off the heating, release the pressure and discharge the material. The feed liquid is initially filtered with a 100-mesh stainless steel screen, and the initial filter residue is returned to use. The filtrate is vacuum filtered and the suction filter residue is stored. The content of organic matter in the suction filtrate is 2.19 mg / L, and the removal rate of organic matter is calculated to be 99.04%, and the chlorine salt in the suction filtration is recovered.

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Abstract

The invention relates to a method for treating organic tin wastewater containing organic substances and high-concentration chlorates. The method comprises: under conditions of intermediate temperate and pressure, passing oxygen through and adding a catalyst in the waste water for oxygenolysis and removal of the organic substances in the wastewater; concentrating and crystallizing a filtrate obtained after filtration; and recovering the chlorates. The method carries out oxygenolysis of the organic substances, solves the problem of environment pollution of the organic wastewater and effectively recovers the chlorates.

Description

technical field [0001] The invention belongs to a method for treating organotin waste water containing refractory organic matter and high-concentration chlorine salt. Background technique [0002] The treatment methods of organic wastewater mainly include biological treatment, chemical treatment, physical and chemical treatment, physical treatment and so on. For the treatment of high-concentration organic wastewater, the above two or three methods are often used for comprehensive treatment. [0003] Chemical methods mainly use strong oxidants to treat organic wastewater. Commonly used strong oxidants include ozone, potassium permanganate, and chlorine gas. When using ozone chemical oxidation, in view of the power limitation of the current ozone generator, the ozone concentration is low, and in most cases it is used in the treatment of low-concentration organic waste water. Using potassium permanganate, chlorine and other oxidants to treat organic wastewater can treat waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 王炜王维昌张勇郭景巍王晓福刘新阳
Owner YUNNAN TIN GROUP HLDG
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