Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for treating phenol-containing waste water by gemini surfactant enhancement and flat plate ultrafiltration

A Gemini surface and active agent technology, applied in the field of organic wastewater membrane treatment, achieves the effects of low CG concentration, simple process combination, and avoiding secondary pollution

Inactive Publication Date: 2013-07-31
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned technologies. By using a gemini surfactant CG, a kind of surfactant with good removal effect, low energy consumption, simple operation, small secondary pollution, and low surfactant consumption is provided. A Gemini Surfactant CG Enhanced Plate Ultrafiltration Method for Treating Phenol-Containing Wastewater with Low Cost and Recyclable Surfactant and Phenol

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] When the concentration of phenol in the wastewater is 50.0mg / L, add 15×10 -3 mol / L CG, stir evenly, and let it stand for 2 hours. After the CG monomer molecules produce micelles, the phenol in the water is solubilized. The above-mentioned phenol-containing wastewater added with CG is pumped to a flat ultrafiltration membrane for filtration. The ultrafiltration membrane material is Polyethersulfone, the molecular weight cut-off is 10000Dalton, the operating pressure of the membrane is 0.2MPa, the operation mode of ultrafiltration is intermittent, and the retentate is returned to the water inlet tank to achieve the concentration effect. The CG micelles that solubilized phenol in water were retained by the ultrafiltration membrane, thereby realizing the removal of phenol in wastewater. The concentrations of phenol and CG in the permeate were determined by ultraviolet spectrophotometry and titration, and the results are shown in Table 1.

[0026] Table 1 Treatment of pheno...

Embodiment 2

[0030] When the concentration of phenol in the wastewater is 114.6mg / L, add 20×10 -3 mol / L CG, stir evenly, and let it stand for 2 hours. After the CG monomer molecules produce micelles, the phenol in the water is solubilized. The above-mentioned phenol-containing wastewater added with CG is pumped to a flat ultrafiltration membrane for filtration. The ultrafiltration membrane material is Polyethersulfone, the molecular weight cut-off is 10000Dalton, the operating pressure of the membrane is 0.2MPa, the operation mode of ultrafiltration is intermittent, and the retentate is returned to the water inlet tank to achieve the concentration effect. The CG micelles that solubilized phenol in water were retained by the ultrafiltration membrane, thereby realizing the removal of phenol in wastewater. The concentrations of phenol and CG in the permeate were determined by ultraviolet spectrophotometry and titration, and the results are shown in Table 2.

[0031] Table 2 Treatment of phen...

Embodiment 3

[0035] When the concentration of phenol in the wastewater is 247.1mg / L, add 25×10 -3 mol / L CG, stir evenly, and let it stand for 2 hours. After the CG monomer molecules produce micelles, the phenol in the water is solubilized. The above-mentioned phenol-containing wastewater added with CG is pumped to a flat ultrafiltration membrane for filtration. The ultrafiltration membrane material is Polyethersulfone, the molecular weight cut-off is 10000Dalton, the operating pressure of the membrane is 0.2MPa, the operation mode of ultrafiltration is intermittent, and the retentate is returned to the water inlet tank to achieve the concentration effect. The CG micelles that solubilized phenol in water were retained by the ultrafiltration membrane, thereby realizing the removal of phenol in wastewater. The concentrations of phenol and CG in the permeate were determined by ultraviolet spectrophotometry and titration, and the results are shown in Table 3.

[0036] Table 3 Treatment of phen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for treating phenol-containing waste water by a novel surfactant of gemini surfactant enhancement and flat plate ultrafiltration, which comprises the following steps that: firstly, gemini surfactants are added into phenol-containing waste water, the materials are uniformly stirred, the still standing is carried out, the phenol in the water is solubilized after gemini surfactant monomers generate micelles, then, the waste water is ultrafiltered through flat ultrafiltration membranes, and the ultrafiltration membrane stops the gemini surfactant micelle after the ultrafiltration treatment, so the goal of removing the phenol is reached. When the method is used for treating the phenol-containing waste water, the phenol removing effect is good, the energy consumption is low, the operation is simple, the recovery of the surfactant and the phenol is easy to realize, and in addition, the automatic operation is realized. The method has the advantages that the consumption of the selected gemini surfactant is low, the content of the surfactant in penetrating fluid is low, the secondary pollution is low, and in addition, the high-molecular-weight micelle is formed. The flat plate ultrafiltration membrane with the stop molecular weight being 10000 to 15000 Dalton is adopted, the membrane flux is large, and the surfactant can be favorably and practically applied to the engineering.

Description

Technical field: [0001] The invention relates to a method for treating organic wastewater by membrane method, in particular to a new type of surfactant-gemini surfactant "dimethylene-1,2-bis(dodecyldimethylammonium bromide)" reinforced plate A method for treating phenol-containing wastewater by ultrafiltration. Background technique: [0002] Phenol is a basic organic chemical synthesis raw material in industry. It is widely used in industry, such as the industrial production process of pesticides, insecticides, dyes, medicines, etc. With the rapid development of our country in recent years, the output of phenol has increased rapidly. At the same time, the discharge of organic wastewater containing phenol has continued to increase, causing serious pollution to the environment. Phenol-containing wastewater has the following characteristics: high organic content, strong toxicity, and poor biodegradability. At present, the conventional physical, chemical and biological method...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F1/44C02F103/34
Inventor 黄国和张雯翔魏佳郑如秉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com