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

Method for inactivating urine and synchronously removing PPCPs by singlet oxygen generated in situ by three-dimensional electrochemical reactor

A chemical reactor and singlet oxygen technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of increasing sewage treatment costs, secondary pollution of water bodies, etc., and achieve full inactivation, synchronization and high efficiency , low cost, low applied electric field voltage and low current density

Active Publication Date: 2021-06-22
TONGJI UNIV
View PDF20 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need to add H 2 o 2 , The input of oxidants such as PMS and PDS increases the cost of sewage treatment, and due to the introduction of metal ions by metal oxides, the water body is polluted twice

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 inactivating urine and synchronously removing PPCPs by singlet oxygen generated in situ by three-dimensional electrochemical reactor
  • Method for inactivating urine and synchronously removing PPCPs by singlet oxygen generated in situ by three-dimensional electrochemical reactor
  • Method for inactivating urine and synchronously removing PPCPs by singlet oxygen generated in situ by three-dimensional electrochemical reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a method for in-situ generation of singlet oxygen by a three-dimensional electrochemical reactor to inactivate urine and simultaneously remove PPCPs, including the following steps:

[0032] 1000mL contains 10 6 CFU mL -1Escherichia coli bacteria and 10mg / L PPCPs urine water samples were added to the reactor, then 50mmol sodium sulfate was added to the three-dimensional electrochemical reactor, and the urine water samples were electrochemically treated at room temperature and under the conditions of an external DC electric field , wherein the condition of the electrochemical treatment is that the current density of the direct current is 10mA / cm 2 , the distance between the cathode and the anode in the three-dimensional electrochemical reactor is 1 to 5 cm, and bacteria and sulfamethoxazole (PPCPs contained in urine include various PPCPs including sulfamethoxazole) in the system under different reaction times are detected. , the present inventio...

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

PropertyMeasurementUnit
Surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for inactivating urine and synchronously removing Pharmaceutical and Personal Care Products (PPCPs) by generating singlet oxygen in situ through a three-dimensional electrochemical reactor, which specifically comprises the following steps of: firstly, adding 106CFU mL <-1 > of escherichia coli bacteria and a urine water sample of 10mg / L of PPCPs into the reactor, then adding electrolyte sodium sulfate into the three-dimensional reactor, performing electrochemical treatment on the urine sample under the conditions of room temperature and external direct-current electric field, wherein 50 mmol of sodium sulfate is correspondingly added into each 1L of urine sample, the third electrode of the reactor is nitrogen and phosphorus co-doped activated carbon particles, the cathode is a modified graphite felt electrode, the cathode is a graphite felt electrode, and the distance between the cathode and the anode in the reactor is 3 cm. The method is simple, sodium sulfate is added into a to-be-treated urine water sample to form a three-dimensional electrochemical reactor, singlet oxygen is generated in situ, bacteria in urine can be fully inactivated, and PPCPs can be synchronously and efficiently oxidized and degraded.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for inactivating urine and synchronously removing PPCPs by generating singlet oxygen in situ in a three-dimensional electrochemical reactor. Background technique [0002] Urine has complex components, unstable properties, and high concentrations of salts, nutrients (such as N, P, K) and organic matter. At the same time, there are a variety of trace pollutants and pathogenic microorganisms in urine, which are difficult to be effectively removed by traditional sewage treatment methods, and have significant potential risks to humans and the environment. The presence of pathogenic microorganisms and viruses will make urine an important way for the spread of diseases, so urine needs to be inactivated before discharge to prevent the spread of microorganisms that are concerned about infection with wastewater. There are many kinds of drugs and personal care...

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): C02F1/461C02F101/38
CPCC02F1/46109C02F1/4606C02F2001/46133C02F2101/38
Inventor 周雪飞张亚雷陈家斌姚秋芳
Owner TONGJI UNIV
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