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

Device and method for rapid cultivation of aerobic granular sludge based on sludge-age control

An aerobic granular sludge and sludge age control technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problem that the sludge age cannot be effectively controlled, affect the stability of the particle structure, Problems such as microbial metabolism disorder in the system, to overcome the effects of long granulation time, improved TN removal rate, and compact granule structure

Active Publication Date: 2017-11-17
ZHEJIANG UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the aerobic granular sludge currently operating in the SBR reactor cannot be effectively controlled due to the fact that the sludge age cannot be effectively controlled, so that a large amount of sludge is discharged during the operation of the reactor, resulting in the loss of functional flora, the disorder of microbial metabolism in the system, and the effects of nitrification and denitrification Inhibited, affecting the stability of the particle structure, further causing the irreversible instability of the reactor, restricting its industrial application

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
  • Device and method for rapid cultivation of aerobic granular sludge based on sludge-age control
  • Device and method for rapid cultivation of aerobic granular sludge based on sludge-age control
  • Device and method for rapid cultivation of aerobic granular sludge based on sludge-age control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0045] In this embodiment, the aerobic granular sludge process for treating urban sewage adopts a sequencing batch reactor (SBR) with an effective volume of 4.0 L. The main body of the reactor is a cylindrical plexiglass cylinder with a cylinder height of 50 cm and an inner diameter of 10 cm. The aspect ratio is 5. For the specific structure of the device, see figure 1 and 2 As well as the foregoing description, no further details are given.

[0046] The inoculated sludge in this example is taken from the aeration tank of the municipal sewage treatment plant, and the Shannon index is 4.85, which means that there is a relatively high abundance of flora in the particles. The analysis of the flora structure at the phylum level found that Proteobacteria and Bacteroides Accounted for more than 60%.

[0047] In this embodiment, the operation process of using the above-mentioned reactor to treat urban sewage to cultivate aerobic granular sludge is as follows: the reactor is operat...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
heightaaaaaaaaaa
aspect ratioaaaaaaaaaa
Login to View More

Abstract

The invention discloses a device and method for rapid cultivation of aerobic granular sludge based on sludge-age control. The device comprises a water inlet unit, a reactor body, an aeration unit, a drainage unit, a sludge discharging unit and a control unit. The reactor body is a columnar double-layer cylinder, an inner cylinder serves as a reaction area, an area between the inner cylinder and an outer cylinder serves as a sludge storage area, a water outlet in the inner cylinder is connected with a sludge opening of the sludge storage area through a pipeline with a first solenoid valve, and the bottom of the outer cylinder of the sludge storage area is provided with a sludge discharging pipe with a second solenoid valve. The device for the rapid cultivation of the aerobic granular sludge has the advantages that the sludge age is easily and effectively controlled and the occupied area of a reactor is reduced, the running mode of controlling the sludge age during sludge discharging can be achieved, and the problem is solved that sequencing batch reactors (SBR) easily lose stability under the condition of not regulating the sludge age.

Description

technical field [0001] The invention relates to a device and method for rapid cultivation of aerobic granular sludge based on sludge age control, and belongs to the technical field of wastewater biological treatment. Background technique [0002] In 1991, Mishima et al. discovered the self-coagulation phenomenon of aerobic activated sludge in a continuous flow AUSB reactor. Aerobic granular sludge is a self-fixed form of microorganisms formed spontaneously under aerobic conditions. It has excellent settling performance, high biological retention, low sludge yield and resistance to organic load impact, which greatly compensates for the traditional Disadvantages of the activated sludge process. The first aerobic granular sludge seminar held in Munich, Germany in 2005 made a clear definition of it. It is believed that aerobic granular sludge is a microbial aggregate whose particles do not agglomerate with the reduction of hydraulic shear force and have Compared with the faste...

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): C02F3/12C02F101/16
CPCC02F3/12C02F3/1236C02F2101/16C02F2305/06Y02W10/37Y02W10/10
Inventor 张智明俞卓栋朱亮徐向阳
Owner ZHEJIANG 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