Membrane bioreactor-based sewage treatment method

A sewage treatment method and membrane bioreactor technology are applied in the field of sewage treatment based on membrane bioreactors, which can solve the problems of easy membrane blockage and serious pollution of membrane components, and achieve the effect of slowing down the reduction of membrane flux and reducing membrane pollution.

Active Publication Date: 2014-05-21
CHONGQING NAIDE MACHINERY EQUIP
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aerobic bacteria are easy to produce gelatinous bacteria clusters, which have strong adhesion, seriously pollute the membrane modules, and easily block the membrane

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
  • Membrane bioreactor-based sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] combined with figure 1 , a sewage treatment method based on a membrane bioreactor, the treatment process includes aerobic reaction treatment and membrane biological reaction treatment, sewage enters the aerobic reaction zone 2 through the sewage input pipe 314, and the first aeration head is arranged at the bottom of the aerobic reaction zone 2 105 performs an aeration reaction on the sewage in the aerobic reaction zone 2; the sewage aerated in the aerobic reaction zone 2 enters the anaerobic reaction zone 4 through the aerobic outlet pipe 104 for membrane bioreaction, and the air discharged from the aerobic reaction zone 2 passes through the gas After the accelerator 10 is accelerated, the bottom of the membrane module 6 is flushed and aerated by the fourth aeration head 108; the air at the air outlet of the blower 12 passes through the second air valve 102 to control the air volume, and then the second aeration head 107 aerates the bottom of the membrane module 6 , th...

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 membrane bioreactor-based sewage treatment method. A treatment process comprises aerobic reaction treatment and biological reaction treatment, wherein sewage firstly passes through an aerobic reaction region for performing an aerobic reaction, sewage aerated by the aerobic reaction region enters an anaerobic reaction region through an aerobic water outlet pipe for membrane biological reaction, and air is discharged from the anaerobic reaction region by using the aerobic reaction region for washing and aerating a membrane assembly; meanwhile, an air blower is used for aerating the bottom of the membrane assembly to control the aeration rate so that the dissolved oxygen in a region inside the membrane assembly is 0.2-0.5 mg/L, and an anaerobic environment is treated. According to the sewage treatment method disclosed by the invention, after air reacts through an aerobic reaction region, the oxygen content is lower. The membrane assembly is in the anaerobic environment, thus the membrane assembly is prevented from forming an aerobiotic membrane bioreactor, the membrane pollution and blockage are reduced, the membrane flux is decreased, and the speed is lowered. In the anaerobic environment, phosphorus-accumulating bacteria are used for discharging phosphorus in a body into the sludge, the phosphorus is directly removed through gasification, and the phosphorus in sewage is discharged in a hydrogen phosphide manner.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a sewage treatment method based on a membrane bioreactor. Background technique [0002] Membrane bioreactor is a representative water treatment device that has developed rapidly in recent years. It can not only replace the secondary settling tank of the traditional device, but also significantly improve the quality of the effluent. [0003] Most of the current membrane bioreactors are aerobic reactions, and it is necessary to provide an aeration device under the membrane modules to generate an aerobic reaction environment. Under the aerobic reaction environment, the aerobic bacteria group has a short reproduction cycle and dies quickly, forming a large amount of phosphorus-containing sludge. Aerobic bacteria tend to produce gelatinous bacteria clusters with strong adhesion, which seriously pollute the membrane modules and easily block the membrane. Contents of the ...

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 蒋川
Owner CHONGQING NAIDE MACHINERY EQUIP
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap