Continuous flow aerobic granule sludge culture and grain diameter control method and system

An aerobic granular sludge, particle size control technology, applied in chemical instruments and methods, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc. Instability and other problems, to achieve the effect of promoting granulation, ensuring normal operation and simple process

Inactive Publication Date: 2017-05-31
ZHEJIANG UNIV OF TECH +1
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the current problems of difficult cultivation of aerobic granular sludge in continuous flow, long period, difficult particle size control, easy instability, etc., and aiming at the c

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
  • Continuous flow aerobic granule sludge culture and grain diameter control method and system

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Example 1: A continuous-flow aerobic granular sludge cultivation and particle size control method, the sludge from the aeration tank of the sewage treatment plant was inoculated into the reactor at 1200 mg / L, the inoculated sludge was in floc form, and the SVI was 85ml / g, using sodium acetate, ammonia oxide, potassium dihydrogen phosphate to make COD 1000mg / L, NH 4 + - Sewage with a N concentration of 60mg / L and a TP concentration of 10mg / L is continuously fed into the operation, the heavy sludge of the barbed cyclone separator is returned to the front of the anoxic tank, the sludge of the sedimentation tank is returned to the front of the anaerobic tank, and the reactor After 20 days of continuous operation, the aerobic sludge is granulated, most of the particle size is 500-1000 microns, the sedimentation rate is 20-30m / h, SVI<52ml / g, the removal rate of COD is about 95%, and the removal rate of TN The rate is around 85%, and the TP is around 90%.

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 provides a continuous flow aerobic granule sludge culture and grain diameter control method. The continuous flow aerobic granule sludge culture and grain diameter control method comprises the following steps: 1) enabling input water to pass through a thick-fine grid and a primary sedimentation tank in sequence and then enter a biochemical tank; 2) pressing output water of the biochemical tank to a cyclone separator and carrying out light and weight sludge separation, wherein the cyclone separator is a built-in barb cyclone separator and is internally provided with barbs for controlling the grain diameter of granular sludge; 3) pressing and reflowing a separated heavy sludge mixed solution back to an oxygen-free tank; pressing a light sludge mixed solution to a sedimentation tank and carrying out sludge-water separation; after carrying out the sludge-water separation, taking one part of sludge as residual sludge and reflowing the residual sludge to the front end of an anaerobic tank; dehydrating the other part of the sludge and conveying the sludge to the outer side; enabling the output water of the sedimentation tank to pass through a disinfection facility and realizing up-to-standard discharging. The invention provides a continuous flow aerobic granule sludge culture and grain diameter control system. The granulation of aerobic sludge is promoted and the grain diameter of granules is controlled to be in an optimal range.

Description

technical field [0001] The invention belongs to the field of sludge treatment and relates to a continuous flow aerobic granular sludge cultivation and particle size control method and system. [0002] technical background [0003] Compared with ordinary activated sludge, aerobic granular sludge technology has good settling performance, high sludge concentration, and can withstand high organic load, load shock and toxic substances, etc., and it is becoming a hot research and report from all walks of life. Generally speaking, the formation of aerobic granular sludge is a complex process involving physical, chemical and biological effects. The mainstream view describes this process as a phenomenon of biological aggregation formed by microbial self-agglomeration under certain hydrodynamic conditions. . Scholars at home and abroad have proposed various aerobic granular sludge formation mechanisms based on their own experimental research based on different reactors, experimental m...

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
IPC IPC(8): C02F9/14C02F3/30
CPCC02F9/00C02F1/00C02F1/52C02F3/30C02F3/302C02F2101/105C02F2101/16C02F2301/08C02F2303/04
Inventor 李军陈涛李兴强阜崴张树军高永青张帅
Owner ZHEJIANG UNIV OF TECH
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