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Method for treating dicumyl peroxide condensed wastewater

A technology of dicumyl peroxide and a treatment method is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. High removal efficiency, significant environmental and economic benefits, and high COD removal rate

Inactive Publication Date: 2012-12-26
金魏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problem of high cost and difficulty in treating wastewater in water treatment plants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Configure 10% N-503-cumene system extractant;

[0027] Mix the acidic waste water and condensation waste water after the acid analysis of waste alkali to adjust the pH value to 2.5;

[0028] The mixed solution enters the first settling tank, and after separation, the waste water goes out from the bottom and mixes with the extractant from the third settling tank;

[0029] The mixed wastewater enters the second settling tank. After separation, the wastewater goes out from the bottom and mixes with the extractant from washing with sodium hydroxide solution, and then enters the third settling tank.

[0030] The mixed wastewater enters the third settling tank, and after separation, the wastewater goes out from the bottom for distillation.

[0031] The extraction agent and the condensation wastewater are extracted in countercurrent. After the extraction agent and the condensation wastewater are mixed, they first pass through the third settling tank. After being s...

Embodiment 2

[0034] Configure 10% N-503-cumene system extractant;

[0035] Mix the acidic wastewater and condensation wastewater after acid analysis with waste alkali to adjust the pH value to 2.0;

[0036] The mixed solution enters the first settling tank, and after separation, the waste water goes out from the bottom and mixes with the extractant from the third settling tank;

[0037] The mixed wastewater enters the second settling tank. After separation, the wastewater goes out from the bottom and mixes with the extractant from washing with sodium hydroxide solution, and then enters the third settling tank.

[0038] The mixed wastewater enters the third settling tank, and after separation, the wastewater goes out from the bottom for distillation.

[0039] The extraction agent and the condensation wastewater are extracted in countercurrent. After the extraction agent and the condensation wastewater are mixed, they first pass through the third settling tank. After being separ...

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Abstract

The invention discloses a method for treating dicumyl peroxide condensed wastewater. By taking N-N-di(1-methylheptyl)acetamide as an extracting agent, the method comprises the following steps of: step 1, preparing 5-15% of N-N-di(1-methylheptyl)acetamide to a solvent by cumin as an extracting agent; step 2, mixing the dicumyl peroxide condensed wastewater by acidic wastewater, and adjusting a pH value of the mixed liquid to 1-6; step 3, carrying out three-level or four-level reverse extraction on the mixed liquid so as to obtain extract liquor; step 4, separating the extracted wastewater into a normal pressure distillation tower, condensing and recycling the distillate, and detecting a COD (Chemical Oxygen Demand) value and the phenol content; and step 5, washing the extract liquor by sodium hydroxide solution to obtain the extracting agent for recycling. After the extracting agent system is recycled, the extracting agent is repeatedly used; after the dicumyl peroxide condensed wastewater is subjected to three-level or four-level reverse extraction, the phenol removal rate of the recycled distillate is up to more than 99.5%, and the removal rate of the COD after distillation is high.

Description

technical field [0001] The invention relates to a treatment method for dicumyl peroxide condensation waste water. Background technique [0002] In the prior art, the dicumyl peroxide condensation wastewater is not treated in the device, and is generally treated in a dewatering treatment plant. [0003] When the condensation wastewater of dicumyl peroxide goes to the water treatment plant, the wastewater not only has high chemical oxygen demand (CODcr) and high phenol, but also contains dimethyl benzyl alcohol, cumene, phenol, acetone, hydrogen peroxide Organic substances such as cumene and benzoic acid are expensive and difficult to treat in water treatment plants. [0004] The extractant N-503 currently on the market is used to treat wastewater and extract organic compounds, such as phenols and aromatic nitro compounds, and has a very good effect. The chemical name of N-503 is N,N-bis(1-methylheptyl)acetamide. [0005] It is a difficult problem in this field to provi...

Claims

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Application Information

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IPC IPC(8): C02F9/10
Inventor 金魏
Owner 金魏
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