Supercharge Your Innovation With Domain-Expert AI Agents!

Electrochemical disinfection method based on singlet oxygen

A technology of singlet oxygen and disinfection methods, applied in chemical instruments and methods, sterilization/microkinetic water/sewage treatment, special treatment targets, etc., can solve the problem of easy generation of chlorinated organic disinfection by-products and inorganic disinfection of chlorate radicals by-products etc.

Active Publication Date: 2021-09-10
HARBIN INST OF TECH
View PDF20 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that existing electrochemical disinfection methods are prone to generate chlorinated organic disinfection by-products and inorganic disinfection by-products containing chlorate, and then provides an electrochemical disinfection method based on singlet oxygen

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
  • Electrochemical disinfection method based on singlet oxygen
  • Electrochemical disinfection method based on singlet oxygen
  • Electrochemical disinfection method based on singlet oxygen

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0033] Embodiment 1: This embodiment is based on the electrochemical disinfection method of singlet oxygen, which is carried out according to the following steps:

[0034] Using the electrode that generates hypochlorous acid in situ as the anode, the hypochlorous acid and hydrogen peroxide generated by the sequencing batch electrochemical reaction are used to generate singlet oxygen, which is used to kill microorganisms in the water;

[0035] When the cathode is graphite felt electrode, stainless steel or titanium; set the anode and cathode in the electrochemical reactor, and the distance between the two electrodes is 1cm~20cm, and the volume ratio of the area of ​​the electrode to the water to be treated is 1cm 2 : (10~200)mL, add the water to be treated into the electrochemical reactor, aerate air or oxygen into the electrochemical reactor, the reaction temperature is 3℃~30℃, and the aeration rate is 60mL / min~200mL / min, the voltage is 2V~30V and the current density is 2.5mA...

specific Embodiment approach 2

[0048] Embodiment 2: This embodiment is different from Embodiment 1 in that the anode is a platinum-titanium electrode, a boron-doped diamond film electrode or an iridium-ruthenium-titanium oxide electrode; the gas diffusion electrode is made of carbon nanotubes. , One or several modified graphite electrodes of polytetrafluoroethylene and carbon black. Others are the same as the first embodiment.

specific Embodiment approach 3

[0049] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the described iridium ruthenium titanium oxide electrode is specifically carried out according to the following steps:

[0050] ①. Put the titanium sheet in the mixed liquid containing hydrofluoric acid and nitric acid, and ultrasonically treat it for 30min-180min to obtain the titanium sheet with the oxide film removed; the concentration of hydrofluoric acid in the mixed liquid containing hydrofluoric acid and nitric acid It is 0.1mol / L~1mol / L, and the molar ratio of hydrofluoric acid and nitric acid is (0.5~2): 1; ②, take the titanium sheet that removes the oxide film as the cathode and the anode respectively, and carry out cathode ruthenium plating treatment, with the concentration of Be that the ruthenium trichloride solution of 1mmol / L~20mmol / L is electrolyte, under the condition that temperature is 5 ℃~30 ℃ and voltage is -3V~-1V, electroplating 5min~30min, after electroplating, take...

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 an electrochemical disinfection method based on singlet oxygen, and relates to an electrochemical disinfection method. The invention aims to solve the problem that chlorinated organic disinfection by-products and inorganic disinfection by-products containing chlorate radicals are easily generated in a conventional electrochemical disinfection method. The method takes an electrode for generating hypochlorous acid in situ as an anode, achieves generating of singlet oxygen by using hypochlorous acid generated by sequencing batch or through-flow electrochemical reaction and hydrogen peroxide, and using the singlet oxygen to kill microorganisms in water. The method is used for electrochemical disinfection of singlet oxygen.

Description

technical field [0001] The present invention relates to electrochemical disinfection methods. Background technique [0002] In the process of water treatment, disinfection is an essential part, because it effectively kills pathogenic microorganisms in the water and greatly reduces the risk of waterborne diseases. Chlorine disinfectants have been used for hundreds of years and are the most common disinfectants for drinking water treatment. Of course, the use of chlorine also faces some difficulties. For example, in the process of disinfection, harmful disinfection by-products such as chloroform and haloacetic acid will be generated. [0003] Electrochemical disinfection has the advantages of being environmentally friendly, easy to use, and clean and efficient. At the same time, the disinfection species generated online avoids the transportation, storage and dosing of disinfectants. Based on this, electrochemical disinfection technology has high application potential in dec...

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): C02F1/467C02F1/461C02F1/50
CPCC02F1/467C02F1/4674C02F1/46109C02F1/50C02F2001/46133C02F2303/04
Inventor 马军卢晓辉邱微汪达徐浩丹
Owner HARBIN INST OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com