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

Device for biological ex-situ degradation of organic matter

An organic matter and heterotopic technology, which is applied in the field of organic pollutant degradation, can solve the problems of cumbersome steps, large quantities, and unsafety, and achieve the effects of simple and convenient operation, low energy consumption, and low cost

Inactive Publication Date: 2019-04-16
TIANJIN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, anthraquinone oxidation produces H 2 o 2 The steps are cumbersome, there are objective unsafe factors in the production process, and there are many types and quantities of flammable and explosive substances involved, and H 2 o 2 It is a strong oxidizing agent with lively properties, and it has strict requirements on external conditions and container materials during storage, packaging and transportation. Therefore, it is necessary to find an in-situ self-synthesized 2 o 2 technology is particularly important

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
  • Device for biological ex-situ degradation of organic matter
  • Device for biological ex-situ degradation of organic matter
  • Device for biological ex-situ degradation of organic matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In-situ biodegradation of formaldehyde is carried out in two ways, one is the microbial suspension growth system, and the other is the biofilm system. The steps are as follows:

[0034] 1) Suspension growth system is to take the sewage from the sewage treatment plant as the source of microorganisms, and add the nutrients required by the microorganisms [sodium acetate 1.0g L -1 , phosphate buffer (50mM PBS, NH 4 Cl 0.31g L -1 ,KCl 0.13g·L -1 ,NaH 2 PO 4 2H 2 O2.772g·L -1 , Na 2 HPO 4 4.576g·L -1 ), metal solution 12.5mL·L -1 , and vitamin solution 5mL·L -1 ], expose oxygen to the solution for 10min, add high-concentration formaldehyde solution to make the concentration respectively 6, 8, 10 and 20mg / L, seal with tinfoil paper and plastic wrap, and treat for 24h.

[0035] 2) The biofilm system is also the sewage from the sewage treatment plant as the source of the carbon cloth to enrich the microorganisms. Add the above-mentioned nutrients required by the micr...

Embodiment 2

[0038] Adopt the present invention, synthesize H based on microbial electrochemical system 2 o 2 And realize the steps of the method for bioheterogeneous degradation of formaldehyde, specifically as follows:

[0039] 1) Install the graphite-carbon black mixed roll-pressed air cathode into the cathode chamber of an anode-acclimated microbial electrochemical system. The two chambers are separated by a cation exchange membrane to form a double-chamber BES. The cathode chamber is 50mM Na 2 SO 4 Solution, cultivated for two cycles to adapt the anode organisms to the environment.

[0040] 2) Apply a bias voltage of 0.6V between the cathode and anode for 1h, and pump the accumulated H in the cathode chamber 2 o 2 Solution transfer to UV / H 2 o 2 In the reaction vessel, add high-concentration formaldehyde solution dropwise to make the concentrations 6mg / L, 8mg / L, 10mg / L and 20mg / L respectively, adjust the pH of the solution to 3, set the optical path to 2cm and 5cm, turn on the s...

Embodiment 3

[0045] Adopt the present invention, synthesize H based on microbial electrochemical system 2 o 2 And realize the steps of the method for bioheterogeneous degradation of formaldehyde, specifically as follows:

[0046] 1) Install the graphite-carbon black mixed roll-pressed air cathode into the cathode chamber of an anode-acclimated microbial electrochemical system. The two chambers are separated by a cation exchange membrane to form a double-chamber BES. The cathode chamber is 50mM Na 2 SO 4 Solution, cultivated for two cycles to adapt the anode organisms to the environment.

[0047] 2) Apply 0.6V bias voltage 0h, 0.5h, 1.0h and 1.5h between the cathode and anode, and use the pump to transfer the hydrogen peroxide solution accumulated in the cathode chamber for 0h, 0.5h, 1.0h and 1.5h to the UV / h 2 o 2 In the reaction vessel, add high-concentration formaldehyde solution dropwise to make the concentration 6mg / L, adjust the pH of the solution to 3, set the optical path to 2...

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 device for biological ex-situ degradation of organic matter. A microbial electrochemistry / advanced oxidation coupling degradation organic matter system is adopted, the systemis composed of a microbial electrochemistry system for synthesizing H2O2 and a UV / H2O2 advanced oxidation system; the microbial electrochemistry system for synthesizing the H2O2 is composed of an anode chamber and a cathode chamber, the anode chamber and the cathode chamber are separated by a cation exchange membrane, and a carbon brush and a graphite-carbon black mixed rolling air cathode are used as the anode and the cathode respectively. A power supply is connected to the anode and the cathode through wires respectively, and the power supply is used for applying bias voltage to the microbial electrochemistry system; the UV / H2O2 advanced oxidation system is mainly composed of a reactor, a magnetic stirring device, a supporting frame and a low-voltage mercury lamp hung over the reactor.The H2O2 in the cathode chamber of the microbial electrochemistry system for synthesizing the H2O2 is conveyed into the reactor of the UV / H2O2 system through a water pump. By means of the device, theproblems caused by transportation and storage of the H2O2 are avoided.

Description

technical field [0001] The invention relates to the field of degradation of organic pollutants, in particular to a device for biological heterotopic degradation of organic matter. Background technique [0002] With the improvement of people's living standards, people's level of interior decoration has gradually improved, and the degree of indoor air pollution has also increased accordingly. According to statistics, the pollution level of indoor air is generally 2-5 times that of outdoor air, and even more than 100 times in some cases. Formaldehyde (CH 2 O), as an important industrial raw material, is widely used in construction, wood processing, furniture, textiles and chemical industries, while formaldehyde is also one of the main indoor air pollutants, which has been classified as a possible cause of nasopharyngeal Human carcinogens of cancer and leukemia, long-term exposure or exposure to high doses of formaldehyde will cause chronic poisoning, allergies, asthma, lung d...

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): B01D53/85B01D53/72
CPCB01D53/72B01D53/85B01D2251/95B01D2257/708B01D2258/06Y02A50/20
Inventor 李楠赵倩安敬昆
Owner TIANJIN 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