Epoxy resin high-salinity wastewater treatment method

A technology for epoxy resin and high-salt wastewater, applied in natural water treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult treatment, inability to use caustic soda for production, and high organic content , to achieve the effect of avoiding pollution, considerable economic benefits, and saving processing costs

Inactive Publication Date: 2012-12-12
JIANGSU KUMHO YANGNONG CHEM CO LTD +1
View PDF8 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic and organic pollutants such as toluene, salt, and aging resin in high-salt wastewater make COD as high as 1.0×10 4 mg/l, which is extremely difficult to deal with, and has become a bottleneck restricting the development of the domestic epoxy industry; although foreign capital or joint ventures have advanced

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Epoxy resin high-salinity wastewater treatment method
  • Epoxy resin high-salinity wastewater treatment method
  • Epoxy resin high-salinity wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. The quality of epoxy resin high-salt wastewater

[0025] Epoxy resin high salt wastewater quality

[0026] index pH TOC (mg / L) COD (mg / L) Salt (%) parameter 13.5 2764 5251 19

[0027] 2. Processing process and results

[0028] 2.1 Pass 1000Kg of epoxy resin high-salt wastewater through the micro-nano bubble generator, cooperate with ozone aeration, the reaction time is 4 hours, the suspended solids in the water are obviously precipitated, and the TOC in the tested water is 2414ppm after filtration.

[0029] 2.2 Take the water after micro-nano treatment, add activated carbon for adsorption, the amount of activated carbon is 0.3% (mass ratio) of the water, the reaction temperature is 70°C, and the stirring time is 40min. After the reaction, the activated carbon was removed by ordinary filtration. The effluent TOC is 2198ppm.

[0030] 2.3 Adjust the pH value to 3 with hydrochloric acid, add FeSO 4 ·7H 2 O 2.5Kg...

Embodiment 2

[0036] 1. The quality of epoxy resin high-salt wastewater

[0037] Epoxy resin high salt wastewater quality

[0038] index pH TOC (mg / L) COD (mg / L) Salt (%) parameter 13.5 3069 5712 19.4

[0039] 2. Processing process and results

[0040] 2.1 Pass 1000Kg of epoxy resin high-salt wastewater through the micro-nano bubble generator, cooperate with ozone aeration, the reaction time is 4 hours, the suspended solids in the water are obviously precipitated, and the TOC in the tested water is 2522ppm after filtration.

[0041] 2.2 Take the water after micro-nano treatment, add activated carbon for adsorption, the amount of activated carbon is 0.5% (mass ratio) of the water, the reaction temperature is 70°C, and the stirring time is 40min. After the reaction, the activated carbon was removed by ordinary filtration. The effluent TOC is 2042ppm.

[0042] 2.3 Adjust the pH value to 3 with hydrochloric acid, add FeSO 4 ·7H 2 O 2.2...

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

No PUM Login to view more

Abstract

The invention relates to an epoxy resin high-salinity wastewater treatment method, which comprises the following steps of: 1) removing aged resin in the epoxy resin high-salinity wastewater by the use of a micro-nano bubble generator; 2) using active carbon for decolouring such that TOC of the epoxy resin high-salinity wastewater is less than 2200 ppm; 3) adding hydrochloric acid into the outputted wastewater obtained from the step (2) so as to adjust pH value to 2-4, adding a Fenton's reagent for Fenton oxidation reaction, wherein the mol ratio of ferroporphyrin to hydrogen peroxide is 0.01-0.5; 4) adjusting the pH value of the outputted wastewater obtained from the step (3) to 9-10, adding a HPAC coagulant for coagulating sedimentation reaction so as to obtain a supernatant, making TOC of the epoxy resin high-salinity wastewater less than 200 ppm; 5) carrying out membrane filtration on the outputted wastewater obtained from the step (4), and removing visible impurities from the epoxy resin water; and 6) carrying out diaphragm electrolysis on the outputted water obtained from the step (5). The treatment method provided by the invention is environmentally friendly and economical.

Description

technical field [0001] The invention relates to a method for treating epoxy resin high-salt wastewater, belonging to the technical field of wastewater treatment. Background technique [0002] Bisphenol A basic epoxy resin is a product synthesized with epichlorohydrin, bisphenol A, and liquid caustic soda as the main raw materials under catalyst and certain process conditions. The by-product of the process is sodium chloride; Sodium chloride is a by-product in the medium, so it is necessary to separate the epoxy resin and sodium chloride by adding water and dissolving in a solvent, so a large amount of saline wastewater will be produced. Salt-containing wastewater consists of two parts ① high-concentration saline-containing wastewater produced during the resin washing process. The wastewater is a mixture of high-concentration organic wastewater and inorganic wastewater. Among them, the organic matter is a macromolecular intermediate product in the process of generating epox...

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
IPC IPC(8): C02F9/06C02F103/38
Inventor 宋数宾杨颖孙祥黄得庆魏天予马良
Owner JIANGSU KUMHO YANGNONG CHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap