Treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater

A treatment method, a technology for organic wastewater, applied in the direction of biological treatment adjustment methods, water/sewage treatment, biological water/sewage treatment, etc., can solve the problems of degradation main reaction efficiency, affecting organic matter, etc.

Active Publication Date: 2021-07-06
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, for high-salt and high-ammonia-nitrogen refractory organic wastewater, the application of advanced oxidation method has the following disadvantages: (1) the high concentration of ammonia nitrogen in wastewater affects the efficiency of the main reaction of organic matter degradation; (2) advanced oxidation method will produce (Per)chlorate by-product, needs to be removed

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
  • Treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater
  • Treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater
  • Treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The treatment method of the high-salt and high-ammonia-nitrogen refractory organic wastewater described in this embodiment comprises the following steps:

[0074] (1) The waste water enters the anode chamber of the microbial electrolytic cell for anaerobic ammonium oxidation autotrophic denitrification, the anode electrode is a carbon fiber electrode, and the anammox bacteria are attached to the surface and pores of the carbon fiber electrode to grow, and the waste water is discharged from the anode chamber Bottom input, top output, cyclically flow through the carbon fiber electrode, and perform autotrophic denitrification under the biochemical action of anammox bacteria;

[0075] The carbon fiber electrode has a specific surface area of ​​500m 2 / g, the pore size is 20 μm, and the biofilm thickness is 10 μm;

[0076] The volume of the anode chamber is 450m 3 , the electrode mass required per unit volume is 2g, the operating pH value in the anode chamber is 7, the ope...

Embodiment 2

[0085] In the treatment method of high-salt, high-ammonia-nitrogen refractory organic wastewater described in this embodiment, such as figure 1 As shown, anaerobic treatment is added before the anode of the microbial electrolysis cell treats wastewater:

[0086] The wastewater first enters the anaerobic tank to degrade macromolecular organic matter, consume high-concentration organic carbon, and completely remove degradable organic matter as much as possible, creating favorable water inflow conditions for subsequent autotrophic denitrification treatment. At the same time, the ammonification reaction is carried out in the anaerobic tank to convert most of the organic nitrogen into ammonium nitrogen;

[0087] The effective volume of the anaerobic tank is 1200m 3 , the hydraulic retention time is 4d, and the volume removal load of organic matter is 0.7kg COD / (m 3 d), the COD concentration of the effluent of the anaerobic tank is 250mg / L;

[0088] The other steps and processing...

Embodiment 3

[0090] In the treatment method of high-salt, high-ammonia-nitrogen refractory organic wastewater described in this embodiment, the anode electrode of the anode chamber of the microbial electrolysis cell is a porous graphene electrode, and other steps and process conditions are the same as in Embodiment 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

PropertyMeasurementUnit
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater. The treatment method comprises the following steps that: S100, wastewater enters an anode chamber of a microbial electrolysis cell for anaerobic ammonia oxidation autotrophic nitrogen removal; S200, the wastewater enters an electrochemical advanced oxidation unit after being subjected to denitrification treatment, and refractory organic matters are degraded; and S300, the effluent of the electrochemical advanced oxidation unit enters a cathode chamber of the microbial electrolysis cell for reduction of perchlorate and chlorate so as to reduce the concentration of chlorine by-products in the wastewater. According to the treatment method, ammonia nitrogen removal, (per) chlorate reduction and advanced oxidation of organic matters are organically coupled, a novel microbial electrolysis cell is established by utilizing the electrochemical activity of anaerobic ammonium oxidation bacteria and chlorate reducing bacteria, autotrophic nitrogen removal by a biological anode and (per) chlorate reduction by a biological cathode are synchronously realized, a new technology for treating the high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater through microbial electrolysis cell-electrochemical advanced oxidation is formed, and economic, efficient and green treatment of the wastewater is realized.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method for high-salt, high-ammonia-nitrogen refractory organic wastewater. Background technique [0002] With the development of science and technology in industry and life, more and more new substances or new materials are used by people. However, these new substances or new materials will enter the wastewater after use, resulting in a large amount of refractory organic matter with high concentrations, Organic wastewater of ammonia nitrogen and chloride ions, such as coking wastewater, pharmaceutical wastewater, livestock and poultry breeding wastewater, landfill leachate, etc. [0003] For the treatment of this kind of refractory organic wastewater, the advanced oxidation method can solve the problem of the last mile of organic matter discharge, and is widely used. However, in addition to attacking the target organic pollutants, the free ra...

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): C02F9/14C02F3/00C02F1/467C02F101/12C02F101/16
CPCC02F3/005C02F3/006C02F1/4672C02F2101/16C02F2101/12
Inventor 王晓君毛文龙陈少华
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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