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Method for treating wastewater containing rubber latex

A technology of rubber latex and treatment method, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc.

Active Publication Date: 2013-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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

[0021] This example is used to illustrate the treatment method of the waste water produced in the production of rubber latex.

[0022] Measure 500ml of waste water (from the powder rubber workshop of Beijing Research Institute of Chemical Industry, wherein the rubber latex content is 3% by weight), electric heating to 100°C; weigh 9g of solid NaOH and add it to the waste water, stir for 5 minutes; weigh 16.67g of anhydrous Calcium chloride was added to the wastewater, stirred for 10 minutes, and allowed to stand for 24 hours.

Embodiment 2

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

[0025] Measure 500ml of waste water (from the powder rubber workshop of Beijing Research Institute of Chemical Industry, wherein the rubber latex content is 3% by weight), electric heating to 60°C; weigh 9g of solid NaOH and add it to the waste water, stir for 10 minutes; weigh 11.1g of anhydrous Calcium chloride was added to the waste water, stirred for 30 minutes, and left to stand for 0.5 hours.

Embodiment 3

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

[0028] Measure 500ml of waste water (from the powder rubber workshop of Beijing Research Institute of Chemical Industry, wherein the rubber latex content is 3% by weight), electric heating to 30°C; measure 45ml of NaOH solution with a concentration of 20% by weight and add it to the waste water, and stir for 5 minutes; Weigh 16.67g of anhydrous calcium chloride and add it to the waste water, stir for 10 minutes, and let stand for 24 hours.

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Abstract

The invention relates to a method for treating wastewater containing rubber latex, wherein the method comprises the steps of: mixing and standing the wastewater, water soluble alkali substances and water soluble metal halides. The method provided by the invention can effectively achieve demulsification of the wastewater containing the rubber latex with lower content, so that the wastewater is in milky wastewater layering to obtain a supernatant liquid layer, and the wastewater is decolored to facilitate the subsequent wastewater treatment of the supernatant liquid, so that the wastewater reaches the emission standard.

Description

technical field [0001] The invention relates to a method for treating waste water containing rubber latex. Background technique [0002] There are generally three methods of demulsification, namely, physical method, biological method and chemical method. Among them, the physical demulsification method includes filtration, centrifugation, ultrasonic, air flotation and so on. The particle size of the rubber particles in the latex suspension is 20-200 nanometers, which can be processed by membrane filtration technology theoretically, but the membrane pores are small, easy to block, and difficult to clean. However, methods such as centrifugation, ultrasound, and air flotation cannot achieve the demulsification of this emulsion. The biological demulsification method originated in the 1970s and is a method of using microorganisms to demulsify emulsions. Microbial demulsification refers to the use of microbial cells themselves or their metabolic processes and metabolites to achi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
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黄源
Owner CHINA PETROLEUM & CHEM CORP
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