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

Anaerobic active sludge process

An activated sludge, sequencing batch technology, applied in the direction of aerobic and anaerobic process treatment, can solve the problems of unstable ecosystem, difficult biochemical advantages, and the potential of Methanothrix cannot be fully utilized.

Inactive Publication Date: 2007-01-03
TAIYUAN UNIV OF TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the perspective of microbial ecology, batch fermentation is carried out in ASBR. With the continuous transfer of initial substrates to intermediate products, the composition of methane bacteria and dominant bacteria in the reactor are also constantly replaced, forming an unstable ecosystem. , making it difficult for Methanosarcina and Methanotrichum to give full play to their respective biochemical advantages: On the one hand, the methanogens in ASBR are mostly Methanothrix, in order to maintain the balance between acidogenic bacteria and methanogenic bacteria, Its organic load is generally ≯8.0g / (L d), which sacrifices the high substrate utilization rate of Methanosarcina; on the other hand, the granular sludge in ASBR is composed of hydrolytic bacteria, acidogenic bacteria and methanogenic The mixed flora composed of bacteria, the alternation of dominant flora makes the potential of Methanothrix to substrate conversion reaction not be fully utilized

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
  • Anaerobic active sludge process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] Inoculation sludge is inoculated with digested sludge from urban sewage treatment plants.

[0026] The reactor in section A operates at medium temperature (30-35°C); the adsorption time is 10-15 minutes; the biogas (biogas) produced by itself is used for intermittent stirring; the reactor in section A is maintained at a high concentration of acetic acid, and the organic load of the influent is about 5.0~ 7.5g / (L d); trace metal elements have an activation effect on Methanosarcina bacteria, and the trace elements Fe, Co, Ni are directly added to the reactor, and the trace element dosage is: Fe adopts 1mg / ( L·d); Co adopts 0.1mg / (L·d); Ni adopts 0.2mg / (L·d). Reactor height and diameter ratio H / D take 5.

[0027] The B-stage reactor operates at medium temperature (30-35°C); the biodegradation time is 6h-8h; the biogas (biogas) generated by the A-stage reaction is used for intermittent stirring; the load of the B-stage reactor is maintained at 5g / (L·d) Next, make it opera...

Embodiment approach 2

[0029] Inoculation sludge is inoculated with digested sludge from urban sewage treatment plants.

[0030] The reactor in section A operates at medium temperature (30-35°C); the adsorption time is 10-20 minutes; the biogas (biogas) produced by itself is used for intermittent stirring; the reactor in section A is maintained at a high concentration of acetic acid, and the organic load of the influent is 7.5~ Between 10.0g / (L d); trace metal elements have an activation effect on Methanosarcina bacteria, and the trace elements Fe, Co, and Ni are directly added to the reactor, and the trace element dosage is: Fe is 1mg / (L·d); 0.1 mg / (L·d) for Co; 0.2 mg / (L·d) for Ni. The reactor height and diameter ratio H / D is preferably 6.

[0031] The B-stage reactor operates at medium temperature (30-35°C); the biodegradation time is 8h-12h; the biogas (biogas) generated by the A-stage reaction is used for intermittent stirring; the load of the B-stage reactor is maintained at 5g / (L·d) Next, ...

Embodiment approach 3

[0033] Inoculation sludge is inoculated with digested sludge from urban sewage treatment plants.

[0034] The reactor in section A operates at medium temperature (30-35°C); the adsorption time is 15-30 minutes; the biogas (biogas) produced by itself is used for intermittent stirring; the reactor in section A is maintained at a high concentration of acetic acid, and the organic load of the influent is 10.0~ Between 12.0g / (L·d); trace metal elements have an activation effect on Methanosarcina bacteria, and the trace elements Fe, Co, and Ni are directly added to the reactor, and the trace element dosage is: Fe is 1mg / (L·d); 0.1 mg / (L·d) for Co; 0.2 mg / (L·d) for Ni. Reactor height and diameter ratio (H / D) take 5.5.

[0035] The B-stage reactor operates at medium temperature (30-35°C); the biodegradation time is 12h to 24h; the biogas (biogas) generated by the A-stage reaction is used for intermittent stirring; the load of the B-stage reactor is maintained at 5g / (L·d) Next, make...

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 anaerobic sequencing batch active sludge process belongs to the field of environment protecting and waste water treating technology. The present invention features the two-stage serially contained anaerobic sequencing batch reactor (ASBR) for optimizing methane bacteria colony, the separate adsorption in the reactor A and biodegradation in the reactor B, and the application of the technological process for treating medium and high concentration insoluble organic waste water. Compared with traditional ASBR, the present invention has 10-30 % raised organic load, 10-20 % reduced power consumption and 10 % raised organic matter eliminating rate.

Description

technical field [0001] The invention discloses an anaerobic sequencing batch activated sludge process, which belongs to the technical field of environmental protection and waste water treatment. Specifically, two-stage anaerobic sequencing batch reactor Anaerobic Sequencing BatchReactor-ASBR is used in series to optimize the methane flora, and the A-stage reactor and B-stage reactor are used to complete the adsorption process and biodegradation reaction respectively. To treat medium and high concentration non-dissolved organic wastewater. technical background [0002] Anaerobic sequencing batch reactor ASBR is a high-efficiency anaerobic reactor developed by Professor Dague in the United States in the early 1990s. It has the advantages of high-efficiency and stable kinetics, and is simple in structure, flexible in operation, easy to operate, and strong in adaptability. However, from the perspective of microbial ecology, batch fermentation is carried out in ASBR. With the co...

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
Inventor 李亚新岳秀萍
Owner TAIYUAN 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