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

Process for recycling acrylic wastewater

A technology for wastewater treatment and acrylic acid, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of low recovery rate of acrylic acid, dark color of acrylic acid concentrate, and many impurities , to achieve the effect of realizing industrialized production operation, reducing waste water discharge and reducing evaporation

Active Publication Date: 2015-07-15
HANGZHOU BLUETEC ENVIRONMENTAL TECH
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recovery rate of acrylic acid in the membrane concentration stage of this method is very low, and the color of the acrylic acid concentrate obtained is very dark and has many impurities.

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
  • Process for recycling acrylic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] With reference to the accompanying drawings, the acrylic acid wastewater entering the process of the present invention (acrylic acid wastewater, containing impurities such as polyacrylic acid, ferric ions and pigments) is processed in the following steps:

[0024] (1) Use a nanofiltration (NF) system to remove impurities such as polyacrylic acid colloids, ferric ions, and pigments; the recovery rate of acrylic acid by nanofiltration is controlled above 98%, and polyacrylic acid colloids, The removal rate of impurities such as ferric ions and pigments can reach more than 80%. The above parameters can also be adjusted according to the needs of subsequent processing. The water produced by the nanofiltration system enters step (2) for treatment. The membrane module used in the nanofiltration system can be a coiled membrane, and the membrane material is selected from cellulose acetate (CA), sulfonated polysulfone (SPS), sulfonated polyethersulfone (SPES) and polyvinyl alcoh...

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 provides a process for treating acrylic wastewater through a membrane process. The process for treating the acrylic wastewater comprises the following steps: 1) performing nanofiltration system treat (NF); 2) performing two-stage electroosmosis system (ED) treatment, introducing concentrated outlet water which passes through the electroosmosis system into a follow-up rectifying process or a high-pressure reverse osmosis process, and recycling fresh outlet water into an acrylic acid absorption tower for being recycled as absorbed water. The process disclosed by the invention can be used for comprehensively treating the acrylic wastewater without causing environmental load, and can be used for recycling the acrylic wastewater.

Description

technical field [0001] The invention relates to a process for treating and recycling acrylic acid wastewater. Background technique [0002] Acrylic acid wastewater has the characteristics of high organic matter content, complex water quality, and poor biodegradability. In terms of the treatment of acrylic acid wastewater, many studies have been carried out at home and abroad, but they mainly focus on the treatment process of wastewater. At home and abroad, the treatment of acrylic acid wastewater is mainly terminal control, and the technologies used are mainly: biochemical method, electrochemical method, catalytic oxidation method, incineration method, etc. Most of these methods remain on the basis of laboratories. Although the incineration method has been applied in engineering, its cost is too high, which is not conducive to large-scale promotion. [0003] Most domestic acrylic acid wastewater treatment has not systematically analyzed from the perspectives of clean produ...

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): C02F9/06C02F9/10
Inventor 楼永通陈良易资利
Owner HANGZHOU BLUETEC ENVIRONMENTAL TECH
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