Unlock instant, AI-driven research and patent intelligence for your innovation.

A synchronous nitrification and denitrification process combined with nitrification functional type and denitrification functional type suspension carrier

A suspension carrier and simultaneous nitrification technology, applied in aerobic and anaerobic process treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the functional design of bacteria lacking enrichment function and restrict SND effect, etc. problems, to achieve the effect of accelerating the growth rate of microbial attachment, improving denitrification performance, and improving nitrification performance

Active Publication Date: 2021-05-11
DALIAN UNIV OF TECH
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional suspension carrier usually has the disadvantage of lack of functional design for enriching functional bacteria, which restricts the further improvement of SND effect

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
  • A synchronous nitrification and denitrification process combined with nitrification functional type and denitrification functional type suspension carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] figure 1 It is a structural schematic diagram of the reaction device of this embodiment.

[0027] 1) Add nitrification functional type and denitrification functional suspension carrier to the MBBR reactor, and the dosage of nitrification functional type and denitrification functional suspension carrier is 30% of the effective volume of the reactor;

[0028] 2) Use the sludge from the secondary sedimentation tank of the municipal sewage treatment plant to start the MBBR reactor. After inoculation, the sludge concentration in the reactor is 5000mg / L, and the intermittent sludge discharge method is used for film formation;

[0029] 3) The reactor adopts a continuous flow water inlet method, and the water flow rate is controlled to adjust the hydraulic retention time to 8 hours; an aeration plate is placed at the bottom of the reactor, and an external aeration device is connected to ensure the nitrification and denitrification functions Sufficient fluidization and uniform ...

Embodiment 2

[0032] 1) Use the sludge from the secondary sedimentation tank of the municipal sewage treatment plant to start the MBBR reactor. After inoculation, the sludge concentration in the reactor is 5000mg / L, and the intermittent sludge discharge method is used for film formation;

[0033] 2) The reactor adopts a continuous flow water inlet method, and the water flow rate is controlled to adjust the hydraulic retention time to 8 hours; an aeration plate is placed at the bottom of the reactor, and an external aeration device is connected to ensure the nitrification and denitrification functions Sufficient fluidization and uniform distribution of the suspended carrier, and the aeration rate is adjusted through the rotameter to control the required dissolved oxygen concentration to be 0.6-1.0mg / L;

[0034] 3) The sludge concentration in the reactor is 2700mg / L;

[0035] 4) The influent water is the actual domestic sewage whose influent water quality and concentration fluctuate greatly i...

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 synchronous nitrification and denitrification process combined with a nitrification functional type and a denitrification functional type suspension carrier, belonging to the technical field of sewage treatment. In view of the different requirements of the two types of functional microorganisms in the synchronous nitrification and denitrification process on the performance of the biofilm carrier, the invention adopts two types of functional biological fillers, nitrification and denitrification, respectively as media for the growth of functional microorganisms. Among them, the nitrifying functional packing is more conducive to the rapid enrichment and growth of nitrifying microorganisms, and the denitrifying functional packing is more conducive to the rapid enrichment and growth of denitrifying microorganisms. Under low dissolved oxygen conditions, the two types of carriers act synergistically to accelerate the formation of biofilm, optimize the functional microbial community structure in the system, and improve the biodiversity of the system, thereby achieving a stable synchronous nitrification and denitrification denitrification effect, making the effluent Ammonia nitrogen and total nitrogen can meet the requirements of discharge standards.

Description

technical field [0001] The invention relates to a synchronous nitrification and denitrification process based on the combination of a nitrification functional type and a denitrification functional type suspension carrier (filler), and belongs to the technical field of sewage treatment. Background technique [0002] With the increase in population and the acceleration of urbanization, the discharge of nitrogen-containing pollutants in domestic sewage has led to various forms of nitrogen pollution, which has aggravated the degree of eutrophication in water bodies. Therefore, it is necessary to effectively control the nitrogen in sewage. Removal, in order to achieve the standard discharge of sewage. In order to enhance the removal effect of nitrogenous pollutants in sewage, the research on efficient and stable biological denitrification technology has become a focus of attention and discussion. [0003] The traditional biological nitrogen removal process is that organic nitrog...

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): C02F3/30
CPCC02F3/302
Inventor 刘涛徐嘉蔚贾光跃全燮
Owner DALIAN UNIV OF TECH