Treatment method of wastewater containing rubber latex

A treatment method, rubber latex technology, applied in the direction of chilled water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., to achieve an environmentally friendly effect

Inactive Publication Date: 2012-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that it is difficult to adopt the method of the prior art to carry out demulsification of waste water containing rubber latex, and provide a kind of treatment method for waste water that is easy to make the waste water containing rubber latex demulsification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This example is used to illustrate the treatment method of the waste water produced in the production of rubber latex.

[0025] Measure 1000ml waste water (from the powder rubber workshop of Beijing Research Institute of Chemical Industry, wherein the rubber latex content is 3% by weight, and the chemical oxygen demand COD of waste water is 16356.4mg / L), put into-10 ℃ freezer and freeze for 168 hours, Take out and filter after natural thawing, the obtained filtrate is clear liquid, and its COD value is 351.6mg / L.

Embodiment 2

[0027] This example is used to illustrate the treatment method of the waste water produced in the production of rubber latex.

[0028] Measure 1000ml waste water (from the powder rubber workshop of Beijing Research Institute of Chemical Industry, wherein the rubber latex content is 2.5% by weight, and the chemical oxygen demand COD of waste water is 14337.0mg / L), put into -70 DEG C freezer and freeze for 24 hours, Take out and filter after natural thawing, the obtained filtrate is clear liquid, and its COD value is 312.4mg / L.

Embodiment 3

[0030] This example is used to illustrate the treatment method of the waste water produced in the production of rubber latex.

[0031] Measure 1000ml waste water (from the powder rubber workshop of Beijing Research Institute of Chemical Industry, wherein the rubber latex content is 0.5% by weight, and the chemical oxygen demand COD of waste water is 2981.8mg / L), put into -40 ℃ freezer and freeze for 72 hours, Take out and filter after natural thawing, the obtained filtrate is clear liquid, and its COD value is 325.7mg / L.

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Abstract

The invention provides a treatment method of wastewater containing rubber latex. The method comprises a step that the wastewater is frozen and is then thawed. With the method provided by the invention, emulsion breaking can be effectively realized out upon the rubber-latex-containing wastewater with relatively low rubber latex content. With the method, solid substances in opalescent wastewater can be flocculated, water quality can be clarified, and wastewater can be decolorized. Therefore, subsequent wastewater treatment can easily be carried out upon the clarified liquid. No agent is adopted according to the invention, such that no secondary pollution is caused. Therefore, the method is environment-friendly.

Description

technical field [0001] The invention relates to a method for treating waste water containing rubber latex. Background technique [0002] The freezing method was first used in seawater desalination treatment, and it has only been used in wastewater treatment in recent decades. The freezing method is based on the principle of solid-liquid phase equilibrium between ice and aqueous solution, and uses the physical characteristics of the freezing point of impurities in wastewater to be much lower than the freezing point of water. Under low temperature conditions, the water in it is first crystallized in the solid phase. , while the impurities are left in the liquid phase, by separating the solid and liquid phases and melting the ice crystals, the purer water and the concentrated liquid containing impurities can be obtained. According to the different ways of ice crystal formation, it can be divided into natural freezing method and artificial freezing method. [0003] The natural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/22C02F1/52
Inventor 李秉海张晓红宋志海戚桂村高建明蔡传伦王亚张红彬赖金梅
Owner CHINA PETROLEUM & CHEM CORP
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