Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Device and method for low-C/N ratio municipal wastewater short-cut denitrification/short-cut nitrification anaerobic ammonia oxidation biofilm process

A short-range denitrification technology for urban domestic sewage, applied in aerobic and anaerobic process treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problem of substandard TN concentration in effluent, complicated operation management, and reduced operating costs and other problems, to achieve the effect of saving aeration, good treatment effect and reducing operating cost

Active Publication Date: 2016-11-16
BEIJING UNIV OF TECH
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The patent of this invention aims at the problems of traditional biological denitrification process when treating low C / N ratio urban domestic sewage, poor stability, high energy consumption, low efficiency, complicated operation and management, effluent TN concentration not up to standard, etc., and proposes a short-range denitrification / short-range The nitrifying anammox biofilm process improves the denitrification effect of low C / N domestic sewage, realizes high-efficiency, low-consumption deep denitrification, thereby reducing operating costs

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 and method for low-C/N ratio municipal wastewater short-cut denitrification/short-cut nitrification anaerobic ammonia oxidation biofilm process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0024] Such as figure 1 As shown, the device and method of low C / N ratio urban domestic sewage short-range denitrification / short-range nitrification anammox biofilm process, is characterized in that: comprises urban sewage water tank (1), short-range denitrification biofilm reactor (2 ), an intermediate water tank (3), a short-course nitrification anammox biofilm reactor (4), and an outlet water tank (5). The domestic sewage is connected to the short-range denitrification biofilm reactor (2) through the water inlet pump (2.1); the short-range denitrification biofilm reactor (2) is provided with an agitator (2.2), a drain port (2.4), and an overflow port (2.5), PH probe (2.7), dissolved oxygen probe (2.8), and filled with polyurethane foam bioactive filler (2.3), hanging short-range denitrifying bacteria biofilm; short-range denitrification reactor (2) efflue...

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 and a method for a low-C / N ratio municipal wastewater short-cut denitrification / short-cut nitrification anaerobic ammonia oxidation biofilm process, belonging to the field of biological sewage treatment. The method comprises the following steps: allowing municipal wastewater and one part of supernatant subjected to short-cut nitrification anaerobic ammonia oxidation in the previous cycle to simultaneously enter a short-cut denitrification bio-membrane reactor, performing anaerobic stirring, performing short-cut denitrification by fully utilizing a carbon source in raw water, and reducing NO3<-> into NO2<->, so that the influence of organic matters in the raw water on microbes in the subsequent short-cut nitrification anaerobic ammonia oxidation bio-membrane reactor; and pumping the supernatant containing NH4<+> and NO2<-> into the short-cut nitrification anaerobic ammonia oxidation bio-membrane reactor through a peristaltic pump for carrying out an anaerobic ammonia oxidation reaction, performing short-cut nitrification and anaerobic ammonia oxidation on the residual NH4<+> in an intermittent aeration and intermittent stirring manner, and finally draining. According to the method disclosed by the invention, the carbon source does not need to be added, advanced nitrogen removal of the low-C / N ratio municipal wastewater is realized, and the method has the advantages of energy consumption, small treatment amount of residual sludge, and the like.

Description

technical field [0001] The invention relates to a device and method for deep denitrification of short-range denitrification / short-range nitrification anaerobic ammonium oxidation biofilm process of urban domestic sewage with low C / N ratio, belongs to the technical field of sewage biological treatment, and is a method for realizing low C / N Experimental device and method for deep denitrification of urban domestic sewage. Background technique [0002] When the traditional aerobic / anoxic SBR process treats domestic sewage, nitrifying bacteria carry out nitrification reaction under aerobic conditions, that is, NH 4 + -N is oxidized to NO 2 - -N, NO 3 - -N, under anoxic conditions, denitrifying bacteria use the carbon source of domestic sewage for denitrification, that is, NO 2 - -N, NO 3 - -N is reduced to N 2 , and then remove nitrogen in domestic sewage. At present, my country's urban domestic sewage generally presents a low C / N ratio. The lack of carbon sources in 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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/302
Inventor 王淑莹黄宇赵伟华王梅香潘聪彭永臻
Owner BEIJING UNIV OF TECH
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
Eureka Blog
Learn More
PatSnap group products