Method and apparatus for nitrogen enrichment and removal by utilizing combined membrane biological reaction system

A biological reaction, combined membrane technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as poor nitrification effect, control membrane pollution, reduce reaction The effect of the number of rinses

Active Publication Date: 2013-11-20
北京北控工业环境科技有限公司
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of domestic sewage treatment, the actual operating nitrification/denitrification process and its variant processes (such as oxidation ditch process, SBR process, BAF process, etc.), often add organic carbon sources (such as methano...

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 and apparatus for nitrogen enrichment and removal by utilizing combined membrane biological reaction system
  • Method and apparatus for nitrogen enrichment and removal by utilizing combined membrane biological reaction system
  • Method and apparatus for nitrogen enrichment and removal by utilizing combined membrane biological reaction system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Attached below figure 1 , 2 , 3, 4, 5, 6 and examples are described in detail to further understand the present invention.

[0043] A membrane module C 8 of the present invention ( image 3 , Figure 4 ), is made up of cation exchange membrane 28, ultrafiltration membrane or microfiltration membrane 27 and support plate 26 with diversion groove 30 and hole 31; cation exchange membrane 28 and ultrafiltration membrane or microfiltration membrane 27 are fixed on the support Both sides of the plate 26.

[0044] In order to achieve better experimental results, the cation exchange membrane 28 used in the present invention is a cation exchange membrane of the type CMS provided by Astom, Japan, and the ultrafiltration membrane 27 is a 0.1 μm pore size, membrane-pass membrane provided by Nanjing Ruijiete. The volume is 18.75-20.83 L / m 2 .h ultrafiltration membrane.

[0045] A membrane module A 22 of the present invention ( Figure 5 , Figure 6 ), is made up of anion exc...

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 relates to a method and an apparatus for nitrogen enrichment and removal by utilizing a combined membrane biological reaction system, and belongs to the technical field of sewage treatment. The sewage treatment method is carried out according to the following process: enriching NH4<+> and separating organic matters in waste water by using a membrane module C; carrying out an aerobic nitration reaction; carrying out aerobic sludge settlement; enriching NO3<-> in the waste water by using a membrane module A; carrying out anoxic denitrification by combining the previously separated organic matters; and discharging water. In order to complete the above process, a special enforcement apparatus is provided. The method and apparatus have good organic matter and nitrogen removal function, so as to provide a treatment method for waste water with insufficient carbon source and high density of organic matters and high ammonia nitrogen; meanwhile, the method and apparatus can effectively reduce membrane pollution of the membrane module, and reduce backwashing of membrane and operation cost.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a nitrogen enrichment and removal method and device using a combined membrane biological reaction system. Background technique [0002] C / N is an important factor affecting the nitrification and denitrification process. Theoretically, the stoichiometric C / N required in the denitrification process is 2.86 (COD / NO3--N), but it is reported that the actual C / N required in the nitrification / denitrification system is much greater than 2.86, often at 7 Even over 11. On the other hand, although nitrifying bacteria utilize inorganic carbon sources as electron donors, nitrification is more stable at lower C / N due to the competition between nitrifying bacteria and heterotrophic microorganisms. Therefore, how to control the C / N value of the nitrification process and denitrification process in a suitable range, and optimize the function of the nitrification bacteria and...

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): C02F9/14
Inventor 张岩刘焕光张中朱敏陈敬甘志明孙凤侠史扬谢杭冀
Owner 北京北控工业环境科技有限公司
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