Defoaming agent for landfill leachate and preparation method thereof

A technology of landfill leachate and defoaming agent, which is applied in separation methods, chemical instruments and methods, liquid degassing, etc., and can solve problems such as difficult and efficient defoaming of defoaming agents

Inactive Publication Date: 2021-10-22
杭州撒拉弗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that existing defoamers are difficult to effectively defo...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment relates to a defoamer for landfill leachate, which includes the following components in parts by mass: 12 parts of modified abietic acid, 6 parts of fatty acid polyoxyethylene ester, 3 parts of alkaline silica sol, ethanol 1 part, 2 parts of isopropanol, 1.2 parts of emulsifier AEO-9, 1.2 parts of nonylphenol polyoxyethylene ether, 2.8 parts of PPG, the pH value of the alkaline silica sol is 9.5, and the silicon dioxide content is 30%, The average particle size is 8-20nm;

[0027] The preparation method of described defoamer is:

[0028] Weigh each raw material according to the stated mass parts for later use, first add the modified abietic acid and the ethanol and isopropanol into the reaction kettle, gradually heat up to dissolve, stir and mix for 30 minutes, keep the temperature and add the fatty acid polyoxygen Vinyl ester and the alkaline silica sol, continue to stir and mix for 30 minutes, add the emulsifier AEO-9, the nonylphenol polyoxyethylene ...

Embodiment 2

[0033]This embodiment relates to a defoamer for landfill leachate, which includes the following components in parts by mass: 12 parts of purified abietic acid, 6 parts of fatty acid polyoxyethylene ester, 3 parts of alkaline silica sol, 1 part of ethanol 2 parts, 2 parts of isopropanol, 1.2 parts of emulsifier AEO-9, 1.2 parts of nonylphenol polyoxyethylene ether, 2.8 parts of PPG, the pH value of the alkaline silica sol is 9.5, the silicon dioxide content is 30%, the average The particle size is 8-20nm;

[0034] The preparation method of described defoamer is:

[0035] Weigh each raw material according to the number of parts by mass for later use, first add the purified abietic acid and the ethanol and isopropanol into the reaction kettle, gradually heat up to dissolve, stir and mix for 30 minutes, and add the fatty acid polyoxyethylene ester and The alkaline silica sol was continuously stirred and mixed for 30 minutes, cooled to room temperature, added with the emulsifier A...

Embodiment 3

[0037] This embodiment relates to a defoamer for landfill leachate, which includes the following components in parts by mass: 12 parts of modified abietic acid, 6 parts of fatty acid polyoxyethylene ester, 3 parts of alkaline silica sol, ethanol 1 part, 2 parts of isopropanol, 1.2 parts of emulsifier AEO-9, 1.2 parts of nonylphenol polyoxyethylene ether, 2.8 parts of PPG, 0.8 parts of tert-butylphenyldiazosulfonate, the alkaline silica sol The pH value is 9.5, the silica content is 30%, and the average particle size is 8-20nm;

[0038] The preparation method of described defoamer is:

[0039] Weigh each raw material according to the stated mass parts for later use, first add the modified abietic acid and the ethanol and isopropanol into the reaction kettle, gradually heat up to dissolve, stir and mix for 30 minutes, keep the temperature and add the fatty acid polyoxygen Vinyl ester and the alkaline silica sol, continue to stir and mix for 30 minutes, add the emulsifier AEO-9,...

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Abstract

The invention provides a defoaming agent for landfill leachate, and belongs to the field of defoaming agents, and the defoaming agent comprises the following components in parts by mass: 4-12 parts of modified abietic acid, 3-6 parts of polyoxyethylene fatty acid, 1-4 parts of alkaline silica sol, 1-4 parts of low-grade saturated monohydric alcohol, 1-2 parts of fatty alcohol-polyoxyethylene ether, 1-2 parts of alkylphenol polyoxyethylene ether, and 1-3 parts of polyether polyol; according to the invention, the modified abietic acid is added on the basis of polyoxyethylene fatty acid so that the defoaming agent with excellent defoaming and foam inhibition performance is prepared.

Description

technical field [0001] The invention relates to the technical field of defoamers and their preparation, in particular to a defoamer for landfill leachate and a preparation method thereof. Background technique [0002] Garbage leachate mainly refers to the moisture contained in the garbage itself in the landfill, the rain and snow water and other moisture entering the landfill, deducting the saturated water holding capacity of the garbage and the covering soil, and passing through the garbage layer and the covering soil. A high-concentration organic wastewater is formed, with complex organic components, high BOD and COD values, high ammonia nitrogen content, and large changes in water quality and quantity. If it is not treated and discharged directly, it will cause serious pollution to the environment. [0003] The control and treatment of landfill leachate is the key to ensure the long-term and safe disposal of waste. In the process of landfill leachate treatment, due to th...

Claims

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Application Information

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IPC IPC(8): B01D19/04
CPCB01D19/0409B01D19/0404
Inventor 陈万钧计玲玲
Owner 杭州撒拉弗科技有限公司
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