Check patentability & draft patents in minutes with Patsnap Eureka AI!

A method for improving the methane production of microbial electrolysis cells and synchronously recovering nitrogen and phosphorus

A microbial electrolysis cell and methane technology, which is applied in the direction of electrolytic organic production, electrolysis components, electrolysis process, etc., can solve the problems of high content, low methane content, and high concentration of nitrogen and phosphorus nutrient elements, so as to increase the methane content, reduce the CO2 content, The effect of reducing ammonia nitrogen concentration

Active Publication Date: 2020-11-24
JIANGNAN UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the above-mentioned deficiencies existing in the prior art, the purpose of the present invention is to provide a kind of method that improves the methane production of microbial electrolysis cell and recovers nitrogen and phosphorus synchronously, solves the methane amount that existing anaerobic digestion produces low, CO 2 The problem of high content and high concentration of nitrogen and phosphorus nutrients in the digestive juice

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

[0037] Microorganisms in the secondary sedimentation tank of a sewage treatment plant are used as inoculum to domesticate and cultivate electrode biofilms. Microbial electrolytic cell reactors. The anode uses a carbon fiber brush with a diameter of about 5cm, and the cathode uses a 200-mesh nickel mesh. The reactor capacity is 500mL. In the reactor Add 400mL of sludge hydrolyzate, wrap 16g of magnesium silicate powder with a particle size of 120µm and 8g of calcium silicate powder with a particle size of 120µm in a 3500Da dialysis bag, and fix the dialysis bag near the anode, at a distance from the outermost bristle of the anode carbon brush. The distance is 0.5cm, the applied voltage is 0.8V, and the initial pH is 7.0. Stir and ferment at a constant temperature of 35±1°C, and the fermentation time is 72h.

Embodiment 2

[0039] The process parameters of Example 2 are the same as those of Example 1, except that calcium silicate and magnesium silicate are not added in the dialysis bag in Example 2.

Embodiment 3

[0041] The process parameter of embodiment 3 is the same as that of embodiment 1, the difference is that the magnesium silicate powder in the dialysis bag in embodiment 3 is 32g, and the calcium silicate powder is 16g.

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for increasing the methane output of a microbial electrolytic cell and synchronously recovering nitrogen and phosphorus. In the method, a calcium source and a magnesium source are added to a microbial electrolytic cell reactor to carry out the process of producing methane by the microbial electrolytic cell. The calcium source It is calcium silicate powder, and the magnesium source is magnesium silicate powder. The present invention realizes in-situ CO 2 The immobilization and synchronous recovery of nitrogen and phosphorus effectively reduce the CO in the gas produced by the microbial electrolysis cell 2 Content, improve the yield and purity of methane, and reduce the concentration of nitrogen and phosphorus elements in the digestive liquid of the microbial electrolytic cell.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method for increasing the methane output of a microbial electrolysis cell and synchronously recovering nitrogen and phosphorus. Background technique [0002] With the continuous development of urbanization, the problem of organic solid waste treatment such as excess sludge and kitchen waste has become increasingly prominent. Anaerobic digestion can convert organic matter in organic solid waste into methane gas that can be used as energy. It has the characteristics of resource utilization and is an advantageous technology for organic solid waste treatment. Microbial electrolysis cell is a microorganism attached to the anode that oxidizes and decomposes organic matter while generating electrons and protons. Under the action of an applied voltage, the electrons are transferred to the cathode through an external circuit, and the protons are transferred to the cat...

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 Patents(China)
IPC IPC(8): C25B3/04C25B15/08C12P5/02C01B25/45C25B3/25
CPCC12P5/023C25B1/00C01B25/451C25B3/25Y02E50/30
Inventor 刘和张衍龚林林姜倩倩郑志永崔敏华章湝
Owner JIANGNAN UNIV
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