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

Method and device for highly-efficiently removing phosphorus at low temperature through SBR domestication of special sludge structure

A sludge and sewage technology, applied in water/sludge/sewage treatment, chemical instruments and methods, biological water/sewage treatment, etc. Effective Phosphorus Removal

Active Publication Date: 2017-12-19
JILIN UNIV
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This operation mode solves the problem that low-temperature sewage is difficult to remove phosphorus efficiently, and further reduces the energy consumption and operating costs of the sewage plant

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 device for highly-efficiently removing phosphorus at low temperature through SBR domestication of special sludge structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022]One of the method of SBR domestication special sludge structure of the present invention realizes efficient phosphorus removal in low-temperature sewage, the method first adopts traditional anaerobic-aerobic environment to domesticate a large amount of phosphorus accumulating bacteria PAOs alternately, and removes phosphorus in the aerobic effluent of the system When the rate is greater than 90% and the operation is stable, it is considered that the effect of this stage is good, and there are a large number of phosphorus accumulating bacteria inside the reactor; after that, adjust the duration of the anaerobic environment, and monitor the critical aerobic environment through the dissolved oxygen concentration sensor inside the reactor The DO value is controlled within 1.0mg / L-1.5mg / L, and a critical aerobic environment is built. At the same time, the sludge changes from the traditional morphological structure to an external critical aerobic environment, with filamentous ba...

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 method and device for highly-efficiently removing phosphorus at a low temperature through SBR domestication of a special sludge structure. The method characterized in that traditional anaerobic-aerobic environment alternation is adopted to domesticate a large amount of phosphorus-accumulating bacteria PAOs, the effect is good when the phosphorus removal rate of the aerobic outlet water of the system is greater than 90% and the system stably runs, and the phosphorus-accumulating bacteria massively exist in a reactor; and the duration of the anaerobic environment is adjusted, and the DO value of the critical aerobic environment is monitored to control the DO value within a range of 1.0-1.5 mg / L, so the reduction of the running cost of a sewage plant is greatly benefited. The sludge having a special form structure is domesticated to make the internal and the external of the sludge in different environments, so NO<3><->-N, NO<2><->-N and PO<4><3->-P in water are simultaneously removed, and the subsequent sewage treatment process is reduced, thereby the treatment cost is further reduced.

Description

technical field [0001] The invention relates to a method for realizing high-efficiency dephosphorization of low-temperature sewage by SBR acclimating a special sludge structure, and belongs to the technical field of sewage biological treatment. SBR means Sequencing Batch Activated Sludge Process. Background technique [0002] The removal of phosphorus in urban sewage is of great significance to the eutrophication of surface water after water discharge. At present, the removal of phosphorus in sewage treatment mainly adopts traditional A / A / O technology or SBR technology. The environment provides phosphorus accumulating bacteria PAOs (polyphosphorus accumulating organisms) with normal phosphorus release and excess phosphorus uptake, and then at the end of the aerobic stage, the purpose of removing phosphorus in the water body is achieved through sludge discharge. [0003] Sewage in winter has the characteristics of large fluctuations in water quality and low temperature. Bec...

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): C02F3/12
CPCC02F3/1263Y02W10/10
Inventor 邹东雷刘美君
Owner JILIN UNIV
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