Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A device for deep denitrification and phosphorus removal of tubular membrane combined with anoxic endogenous denitrification

A technology of endogenous denitrification and subsequent hypoxia, which is applied in chemical instruments and methods, aerobic and anaerobic process treatment, water treatment parameter control, etc., can solve the problems of mud-water separation difficulties, waste of carbon sources, etc., and achieve improvement Sewage treatment efficiency, simple operation, and the effect of improving the scope of application

Active Publication Date: 2021-10-22
BEIJING UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of traditional nitrogen and phosphorus removal, waste of carbon sources and difficulty in separating mud and water

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 device for deep denitrification and phosphorus removal of tubular membrane combined with anoxic endogenous denitrification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A device for deep denitrification and denitrification of endogenous denitrification with anoxic endogenous tubular membranes, characterized in that it includes urban sewage raw water tanks (1), biochemical reactors (2), tubular membranes (3) connected in sequence ); the urban sewage raw water tank (1) includes an overflow pipe (1.1) and an emptying pipe (1.2); the urban sewage raw water tank (1) is connected to the biochemical reactor through the water inlet pipe (2.1) and the water inlet pump (2.2); the biochemical The reactor includes 8 compartments, which are divided into two anaerobic sections, two aerobic sections, and three anoxic sections according to the direction of water flow. 2.4) Use the air pump (2.7), aeration pipe (2.8), and aeration head (2.9) for continuous aeration; except for the aerobic section (2.4), each cell of the biochemical reactor (2) is equipped with an agitator (2.6); The biochemical reactor (2) is connected with the tubular membrane (3) thr...

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 device for deep denitrification and dephosphorization of endogenous denitrification with anoxic endogenous denitrification after combined with tubular membrane, which belongs to the technical field of sewage biological treatment. The domestic sewage first enters the anaerobic section of the AOA reactor from the raw water tank. The polysaccharide bacteria and phosphorus-accumulating bacteria in the anaerobic section fully absorb the external carbon source in the raw water, convert it into an internal carbon source (PHA) and store it in the cell. At the same time, the phosphorus-accumulating bacteria perform anaerobic phosphorus release; then the mixed solution pushes into the aerobic section for nitrification, and at the same time, the phosphorus-accumulating bacteria in the activated sludge perform aerobic phosphorus uptake to complete the absorption of phosphorus; then the mixed solution flows into the In the anoxic section, nitrate nitrogen is used by phosphorus accumulating bacteria and polysaccharide bacteria to realize endogenous denitrification; finally, the mixed solution is pushed into the tubular membrane system for sludge-water separation, and the filtered water is discharged as the final effluent, and the filtered sludge is returned to the AOA reaction anaerobic and anoxic zones. In the invention, the anoxic section is placed behind, and the internal carbon source is fully utilized for denitrification and denitrification. The tubular membrane system solves the problems of large amount of returning sludge and difficulty in separating sludge and water.

Description

technical field [0001] The invention relates to a continuous-flow device for deep denitrification and dephosphorization of tubular membrane combined with anoxic endogenous denitrification, which belongs to the field of sewage treatment. Background technique [0002] When the traditional anaerobic-anoxic-aerobic process treats domestic sewage, nitrifying bacteria carry out nitrification reaction under aerobic conditions, that is, ammonia nitrogen is oxidized to nitrite and nitrate nitrogen, and denitrifying bacteria use the carbon source in domestic sewage under anoxic conditions Carry out denitrification, that is, nitrous and nitrate nitrogen are reduced to nitrogen, and then nitrogen in domestic sewage is removed. Biological phosphorus removal is achieved by alternating anaerobic phosphorus release and aerobic phosphorus uptake, and by discharging phosphorus-containing sludge. Due to the competition of carbon sources between phosphorus accumulating bacteria and denitrifyin...

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): C02F3/30C02F101/16
CPCC02F3/30C02F2101/16C02F2101/163C02F2209/08C02F2209/14C02F2209/15
Inventor 彭永臻王晓玲张亮孟庆贺李家麟杨慎华
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com