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

Method for preprocessing neopentyl glycol industrial wastewater by catalytic oxidation

A technology for neopentyl glycol and waste water production, which is applied in the directions of oxidized water/sewage treatment, chemical instruments and methods, molecular sieve catalysts, etc., to achieve the effects of improving biodegradability, high catalytic activity and low cost

Inactive Publication Date: 2010-07-14
UNIV OF JINAN
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inhibitory effect of formaldehyde on microorganisms, the wastewater produced by disproportionation neopentyl glycol is not suitable for direct biological treatment, and there is currently no effective treatment method

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
  • Method for preprocessing neopentyl glycol industrial wastewater by catalytic oxidation
  • Method for preprocessing neopentyl glycol industrial wastewater by catalytic oxidation
  • Method for preprocessing neopentyl glycol industrial wastewater by catalytic oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 2.0 grams of copper nitrate to make a copper nitrate solution with a mass fraction of 2.0%; then weigh 20.0 grams of γ-Al 2 o 3 Added to 2.0% copper nitrate solution, the catalyst active component, that is, copper nitrate, was evenly distributed in the γ-Al by equal volume impregnation method. 2 o 3 The catalyst was impregnated for 2 hours, dried at a constant temperature of 100°C for 8 hours, and calcined at 300°C for 3 hours.

Embodiment 2

[0023] Take 1.0 gram of ferric nitrate and make it into a 1.0% ferric nitrate solution; then weigh 20.0 grams of γ-Al 2 o 3 Added to 1.0% ferric nitrate solution, the active component of the catalyst, namely copper nitrate, was evenly distributed in the γ-Al 2 o 3 The catalyst was soaked for 1 hour, then dried at 80°C for 9 hours, and calcined at 200°C for 4 hours.

Embodiment 3

[0025] Take 6.0 grams of copper nitrate to make a copper nitrate solution with a mass fraction of 6.0%; then weigh 20.0 grams of γ-Al 2 o 3 Added to 6.0% copper nitrate solution, the catalyst active component, that is, copper nitrate, was evenly distributed in the γ-Al 2 o 3 The catalyst was impregnated for 2 hours, dried at a constant temperature of 100°C for 8 hours, and calcined at 300°C for 3 hours.

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 discloses a method for preprocessing neopentyl glycol industrial wastewater by catalytic oxidation. The invention is to remove formaldehyde and some organic matters from wastewater under a certain condition by adding a catalyst and 30wt% of hydrogen peroxide in the wastewater. The method for preparing the catalyst comprises the following steps: adding a porous inorganic oxide carrier in metal nitrate solution or acetate solution with mass fraction of 1.0-6.0% and mixing uniformly; dipping for a certain time; and drying and baking to obtain the catalyst. The removing rate of formaldehyde is above 89%, the removing rate of CODcr is above 50%, and preprocessed neopentyl glycol industrial wastewater can be processed thoroughly to meet emission standard by a common biological method.

Description

technical field [0001] The invention relates to a method for catalytic oxidation pretreatment of neopentyl glycol production wastewater, which belongs to the technical field of wastewater treatment. Background technique [0002] Neopentyl glycol (Neopentyl glycol, NPG) is a white crystal, mainly used in the production of saturated polyester resins, unsaturated polyester resins, polyester polyols and esters used in synthetic lubricants, polymer plasticization Agents and alkyd resins, etc. Neopentyl glycol derivatives are widely used in the fields of automobiles, textiles, medicine, coatings, pesticides, plastics and petroleum. Saturated polyester resins produced from neopentyl glycol outperform resins prepared from ethylene glycol (which has problems with crystallization) and propylene glycol (which has problems with hydrolysis). The neopentyl structure makes powder coatings and high-solid component coatings prepared from such resins have excellent fluidity, flexibility, ch...

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 Applications(China)
IPC IPC(8): C02F1/72B01J23/72B01J23/745B01J23/755B01J29/00B01J23/89B01J23/34C02F103/36
Inventor 魏琴王晓东杜斌吴丹郑显鹏魏东姚振兴司维
Owner UNIV OF JINAN
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