Method for removing high-concentration dimethyl phthalate through radiation

A dimethyl phthalate, high-concentration technology, which is applied in the field of water treatment, can solve the problems such as the operation method of PAEs removal in the water that has not been given, and achieve the effect of strong penetrating power

Inactive Publication Date: 2011-10-19
NANJING UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] These studies are only a general study of the radiation degradation effect of PAEs, and do not give a feasible and

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 removing high-concentration dimethyl phthalate through radiation
  • Method for removing high-concentration dimethyl phthalate through radiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The aqueous solution of dimethyl phthalate with a concentration of 5000mg / L is put into a metal container, treated with γ-ray radiation with an absorbed dose of 16kGy, and after the treatment, the turbid solution is centrifuged for 20 minutes with a centrifugal force of 10000×g, and the upper layer is poured out liquid, remove the sediment, and obtain a water quality with a removal rate of dimethyl phthalate of 96.1%.

Embodiment 2

[0031] The aqueous solution of dimethyl phthalate with a concentration of 3000mg / L is put into a glass container and treated with X-ray radiation with an absorbed dose of 20kGy. After the treatment, the turbid solution is centrifuged for 20 minutes with a centrifugal force of 10000×g, and the upper layer is poured out Liquid, remove sediment, obtain the water quality that the dimethyl phthalate removal rate is 96.0%. Give example 3:

Embodiment 3

[0032] Put the aqueous solution of dimethyl phthalate with a concentration of 1500mg / L into the container or flow into the pipeline, and treat it with gamma-ray radiation with an absorbed dose of 30kGy. After the treatment, centrifuge the turbid solution for 20 minutes, and pour it over The supernatant was removed, and the sediment was removed to obtain a water quality with a dimethyl phthalate removal rate of 96%.

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 removing high-concentration dimethyl phthalate through radiation. In the method, the dimethyl phthalate at the concentration of 300 to 5,000 mg/L is subjected to high-dose radiation treatment by high-energy rays; and then solid substances are separated and removed from the solution. By the method, the removal rate of the dimethyl phthalate is over 95 percent; radiation degradation products can be removed directly; chemical aids are not required; and energy is saved.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a method for treating plasticizer waste water, that is, high-concentration dimethyl phthalate waste water. Background technique [0002] Phthalic acid esters (Phthalic acid esters, or Phthalates, referred to as PAEs, also known as phthalates) are one of the most important endocrine disruptors in the water environment. In industry, PAEs compounds are mainly used as plasticizers and softeners for plastic products, and the addition amount in PVC and polyethylene plastic products reaches 20% to 50%. One of the synthetic organic compounds. [0003] PAEs are a class of compounds, the main members of which are DMP, DEP, DBP, DOP, DEHP and BBP. In August 1998, the U.S. EPA announced 67 kinds (types) of environmental endocrine disruptors that endangered human body and organisms screened from 86,000 kinds of commercial chemicals, and PAEs were officially included in it. China'...

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): C02F1/30C02F1/58
Inventor 赵永富郑正罗艳张继彪袁守军
Owner NANJING UNIV
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