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Microemulsion and its preparation process and use in treating industrial phenolic waste water

A microemulsion and emulsion technology, applied in chemical instruments and methods, water/sewage treatment, extraction water/sewage treatment, etc., can solve problems such as easy swelling and demulsification, liquid film instability, etc., achieve fast separation speed and easy operation , the effect of low operating costs

Inactive Publication Date: 2006-09-27
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a microemulsion for the defects of the prior art, which effectively solves the problems of unstable liquid film, easy swelling and difficult demulsification in the separation process of the existing emulsion liquid film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Preparation of di-(2-ethylhexyl) phosphate / sorbitan monooleate / kerosene / NaOH microemulsion

[0020] Di-(2-ethylhexyl) phosphate, sorbitan monooleate, and kerosene were mixed evenly in a mass ratio of 1:1.5:5, and slowly added dropwise at normal temperature and under magnetic stirring. When the 5% NaOH solution is added dropwise until the volume ratio of the oil phase and the internal water phase is 5:2, the system gradually changes from turbidity to a uniform transparent liquid, that is, a water-in-oil W / O microemulsion is obtained.

[0021] (2) Extraction of phenol in wastewater

[0022] a. After coagulation, precipitation and filtration, the phenol-containing waste water is metered and enters the upper part of the countercurrent rotary extraction tower, and carries out countercurrent contact with the emulsion entering from the bottom of the tower, and controls the rotating speed of the rotary tower, milk-to-water ratio and water flow in the tower. b. The treated ...

Embodiment 2

[0025] (1) Preparation of di-(2-ethylhexyl) phosphate / sorbitan monooleate / kerosene / NaOH microemulsion

[0026] Di-(2-ethylhexyl) phosphate, sorbitan monooleate, and kerosene were mixed evenly in a mass ratio of 1:0.5:4, and slowly added dropwise at normal temperature and under magnetic stirring. When the 4% KOH solution is added dropwise until the volume ratio of the oil phase and the inner water phase is 5:2.5, the system gradually changes from turbidity to a uniform transparent liquid, that is, a water-in-oil W / O microemulsion is obtained.

[0027] (2) the extraction of phenol in waste water is with embodiment 1

Embodiment 3

[0029] (1) Preparation of di-(2-ethylhexyl) phosphate / sorbitan monooleate / kerosene / NaOH microemulsion

[0030] Di-(2-ethylhexyl) phosphate, sorbitan monooleate, and kerosene were mixed evenly in a mass ratio of 1:1:6, and slowly added dropwise at normal temperature and under magnetic stirring. 10%Na 2 CO 3 solution, when the volume ratio of the oil phase and the internal water phase is 5:3, the system gradually changes from turbidity to a uniform transparent liquid, that is, a water-in-oil W / O microemulsion is obtained.

[0031] (2) the extraction of phenol in waste water is with embodiment 1

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PUM

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Abstract

This invention refers to a microemulsion and Process for preparing as well as the use in dealing with industrial sewage contains hydroxybenzene. The invention is consisted of oil phase and internal water, thereinto the oil phase is consisted of two-(2-ethyl group hexyl) phosphate ester, dehydration sorbitol monooleate and coal oil according to mass ratio 1:0.5- 1.5:4-6, internal water phase is alkaline solution, the volumetric ratio of oil phase and internal water phase is 5:2- 3. The industrial waste water dealed by this invention has the virtues of good liquid film stability, quick mass transfer velocity, high separating efficiency, simple technics, recoverable solute, needing no strong agitation, high pressure static electricity demulsifying setting and so on. The operation cost is low, the stability of motion is good, especially adapts to the dealing, reclamation and utilization of waste water of high concentration hydroxybenzene contain, conquering the biological method's disadvantages of large initial investment, high operation cost, large accommodation area and not suit to the disposal of high concentrated wastewater.

Description

Technical field: [0001] The invention is an improved technology for the separation process of phenol removal by emulsion liquid membrane, and specifically relates to a microemulsion, a preparation method and the use of the microemulsion in treating phenol-containing industrial wastewater. Background technique: [0002] With the rapid development of modern industry, the ensuing large amount of industrial wastewater has become more and more serious to the environment, especially the wastewater containing phenol. Phenol is a highly toxic substance, which is a cell protoplasm substance. Low concentration of phenol can denature protein, and high concentration can cause protein precipitation; phenol has direct damage to various cells, and has a strong corrosive effect on skin and mucous membranes. Phenol-containing wastewater often causes pollution of rivers and lakes, causing a large number of aquatic organisms such as fish to die, reducing crop production or even dying. Due to ...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/26C09K23/00
Inventor 周富荣杜金萍李忠铭
Owner JIANGHAN UNIVERSITY
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