Method for promoting generation of hydroxyl radicals from ozone

A free radical and ozone generation technology, applied in the field of water treatment, can solve environmental secondary pollution and other problems, achieve the effect of reducing construction costs, speeding up the speed, and no risk of secondary pollution

Active Publication Date: 2016-07-27
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydroxylamine is usually a toxic organic substance, and as an ozone system accelerator, it will cause secondary pollution to the environment

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

[0018] Add 12 μmol / L sodium thiosulfate and 40 μmol / L ozone to the water containing 1 μmol / L ethyl atrazine (the molar ratio of sodium thiosulfate to ozone is 0.3:1) and mix rapidly. The reaction time was 0.4s, the pH of the system was 7, and the removal rate of ethyl atrazine was 56.5%.

Embodiment 2

[0020] Add 12 μmol / L potassium thiosulfate and 40 μmol / L ozone (the molar ratio of sodium thiosulfate to ozone is 0.3:1) to the water containing atrazine at a concentration of 0.5 μmol / L and mix rapidly to react The time is 0.4s, the pH of the system is 7, and the atrazine is 90.8%.

Embodiment 3

[0022] Add 12 μmol / L sodium thiosulfate and 40 μmol / L ozone (the molar ratio of sodium thiosulfate to ozone is 0.3:1) into water containing 50 ng / L geosmin and mix them rapidly. The reaction time is 0.4s, the pH of the system was 7, and the removal rate of geosmin was 84.5%.

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 belongs to the field of water treatment, and in particular relates to a method for promoting generation of hydroxyl radicals from ozone. The method comprises the following steps: feeding ozone and thiosulfate into water with pollutants, and rapidly mixing to react, thereby prompting generation of the hydroxyl radicals from the ozone. The method provided by the invention is very fast in reaction speed, can lower the cost when being used in water treatment, can promote rapid reaction in acid, neutral and alkali environments without adjusting the pH value of a water body, is free of risk of secondary pollution and is beneficial to industrial application.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a method for prompting ozone to rapidly generate hydroxyl radicals. Background technique [0002] At present, the commonly used method for treating organic pollutants is mainly oxidation treatment technology. Ozone has attracted widespread attention because of its strong oxidation ability and no secondary pollution. [0003] Although ozone has a strong oxidation ability and has been widely used in water treatment, ozone is selective for the oxidative degradation of organic matter, and has a poor removal effect on some refractory organic matter, and the oxidation of organic matter by ozone is not complete. The intermediate products formed by decomposition sometimes prevent further oxidation of ozone. With the continuous in-depth research and exploration of ozone and ozone technology, methods to improve the oxidation ability and oxidation efficiency of ozone have gradual...

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): C02F1/78
CPCC02F1/78C02F2305/023
Inventor 李继马军杨兢欣李婷婷
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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