Air catalytic oxidation treatment benzyl cyanide waste water method

A catalytic oxidation and air oxidation technology, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of complicated treatment procedures, unsafe, high treatment costs, etc., and achieve technological process Simple, flexible operation, easy to operate effect

Inactive Publication Date: 2012-11-07
聊城鲁西氯苄化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment methods of phenylacetonitrile wastewater are traditional cyanide extraction method, thermal decomposition method, strong oxidant oxi

Method used

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  • Air catalytic oxidation treatment benzyl cyanide waste water method

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Embodiment 1

[0017] A method for air catalytic oxidation treatment of phenylacetonitrile wastewater, using activated carbon as a co-catalyst, soaking the activated carbon with copper sulfate solution as a main catalyst, making a composite catalyst, and loading it into an air oxidation tower 6; the pretreated phenylacetonitrile wastewater is discharged from the air oxidation tower The upper part of 6 enters the air oxidation tower 6, and the air enters from the lower part of the air oxidation tower 6, the waste water is in countercurrent contact with the air, and the treated water flows out from the lower part of the tower; the specific operation steps are as follows:

[0018] (1) Activation of activated carbon, preparing a copper sulfate solution with a mass fraction of 15%, pouring it into the air oxidation tower 6 to spray impregnated activated carbon, passing air through the air inlet 7 to dry the water for later use;

[0019] (2) Wastewater pretreatment, inject phenylacetonitrile wastew...

Embodiment 2

[0024] A method for air catalytic oxidation treatment of phenylacetonitrile wastewater, using activated carbon as a co-catalyst, soaking the activated carbon with copper sulfate solution as a main catalyst, making a composite catalyst, and loading it into an air oxidation tower 6; the pretreated phenylacetonitrile wastewater is discharged from the air oxidation tower The upper part of 6 enters the air oxidation tower 6, and the air enters from the lower part of the air oxidation tower 6, the waste water is in countercurrent contact with the air, and the treated water flows out from the lower part of the tower; the specific operation steps are as follows:

[0025] (1) Activation of activated carbon, preparing a copper sulfate solution with a mass fraction of 15%, pouring it into the air oxidation tower 6 to spray impregnated activated carbon, passing air through the air inlet 7 to dry the water for later use;

[0026] (2) Wastewater pretreatment, inject phenylacetonitrile wastew...

Embodiment 3

[0031] A method for air catalytic oxidation treatment of phenylacetonitrile wastewater, using activated carbon as a co-catalyst, soaking the activated carbon with copper sulfate solution as a main catalyst, making a composite catalyst, and loading it into an air oxidation tower 6; the pretreated phenylacetonitrile wastewater is discharged from the air oxidation tower The upper part of 6 enters the air oxidation tower 6, and the air enters from the lower part of the air oxidation tower 6, the waste water is in countercurrent contact with the air, and the treated water flows out from the lower part of the tower; the specific operation steps are as follows:

[0032] (1) Activation of activated carbon, preparing a copper sulfate solution with a mass fraction of 15%, pouring it into the air oxidation tower 6 to spray impregnated activated carbon, passing air through the air inlet 7 to dry the water for later use;

[0033] (2) Wastewater pretreatment, inject phenylacetonitrile wastew...

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PUM

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Abstract

The invention discloses an air catalytic oxidation treatment benzyl cyanide waste water method. Active carbon serves as promoter and copper sulfate solution serves as a main catalytic agent to soak the active carbon to prepare composite catalyst which is filled in an air oxidation tower. Benzyl cyanide waste water after pretreatment enters the tower from the upper portion of the tower, air is led in from the lower portion of the tower, the waste water and the air are in countercurrent contact, and water after treatment flows out form the lower portion of the tower. Copper sulfate solution with mass fraction of 15% is prepared, the copper sulfate is infiltrated in the air oxidation tower to spray and soak the activated carbon, and moisture is dried for reserve through lead-in air. The benzyl cyanide waste water after pretreatment is infiltrated in a head tank, oil water is separated again at normal temperature after settling separation, the air is led in, and airflow is kept to be stable for 10min. The benzyl cyanide waste water after pretreatment is added in an air oxidation tower, water after pretreatment is observed, the water is colorless and transparent, cyanide ion content in the water after treatment is detected, when the cyanide ion content is smaller than 0.5mg/L, the waste water is qualified, on the contrary, the waste water is disqualified. The qualified water is discharged or enters a next working procedure for comprehensive utilization.

Description

technical field [0001] The invention relates to industrial waste water treatment, in particular to a method for air catalytic oxidation treatment of benzyl nitrile waste water. Background technique [0002] At present, a large amount of wastewater is produced in the production process of phenylacetonitrile in the industry. Phenylacetonitrile wastewater is toxic wastewater containing cyanide, which requires harmless treatment before it can enter the next process or be discharged up to standard. The treatment methods of phenylacetonitrile wastewater are traditional cyanide extraction method, thermal decomposition method, strong oxidant oxidation method, etc. The treatment procedure is complicated, the treatment cost is high, and the treatment process is accompanied by unsafe factors. Contents of the invention [0003] The purpose of the invention is to provide a kind of air catalytic oxidation treatment benzyl nitrile waste water method for overcoming the above-mentioned def...

Claims

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Application Information

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IPC IPC(8): C02F1/74C02F101/38
Inventor 吴宪清付磊韩亚果贾永朋
Owner 聊城鲁西氯苄化工有限公司
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