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

Anaerobic aerobic flocculation precipitation sewage treatment process

A sewage treatment, anaerobic and aerobic technology, applied in the direction of flocculation/sedimentation water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of large head loss, unreasonable process, Low infrastructure investment and other issues, to achieve the effect of short hydraulic retention time, simple process flow, and convenient operation and implementation

Inactive Publication Date: 2003-03-05
SOUTH CHINA UNIV OF TECH
View PDF1 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing sewage treatment process technology, the anaerobic membrane bed is an efficient sewage anaerobic treatment process, which has the advantages of fast start-up, sludge is not easy to lose, and fillers of different materials can be selected, but there is also a long reaction time. , the disadvantage of large pool volume; the biological aerated filter is also an efficient sewage aerobic treatment process. The biggest advantage of the biological aerated filter is that it integrates the functions of biological oxidation and interception of suspended solids, saving the secondary sedimentation tank; In addition, this treatment process also has the characteristics of large volume load, large hydraulic load, small footprint, low infrastructure investment, high oxygen transfer rate, and good effluent quality, but it also has high requirements for the concentration of suspended solids in the influent SS , the water head loss is large, and regular backwashing is required; flocculation and sedimentation is a very mature sewage purification treatment technology, the operation is simple and easy to implement, different sedimentation methods can be selected, and the most effective flocculant can be selected according to the water quality
In the invention patent application with the patent application number 00110777.1, a "self-flowing sewage treatment process" is disclosed, including cyclone sand removal, anaerobic biological treatment, aerobic biological treatment, sedimentation effluent, etc., which is characterized in that sewage passes through anaerobic For the digestion tank, staggered multi-channel upper and lower partitions are set in the anaerobic digestion tank. At the same time, a degradable biofilm is set in the tank, and the tank is covered with an insulation layer; Sludge separation, all the deposited sludge in this tank is returned to the anaerobic digestion tank, and mixed with anaerobic sludge; the advantage of this process is mainly anaerobic degradation, supplemented by aerobic degradation, and integrated sludge and water treatment , to reduce equipment investment and operating costs; but it also has the following disadvantages: the process is not reasonable, the anaerobic digestion effect is not good, the load rate is low, the infrastructure investment is large, and the aerobic tank produces a large amount of sludge. unrealistic

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 aerobic flocculation precipitation sewage treatment process
  • Anaerobic aerobic flocculation precipitation sewage treatment process
  • Anaerobic aerobic flocculation precipitation sewage treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment of the anaerobic aerobic flocculation sedimentation sewage treatment process of the present invention The main part of the sewage treatment is a square concrete structure, mainly including a swirl type grit chamber, anaerobic membrane bed, aerated biological filter, flocculation reaction zone, vertical flow type Sedimentation tank, sludge concentration tank; swirl type grit chamber is a swirl structure, which can remove some particles and adjust water quality and water quality; the lower part of the anaerobic membrane bed is equipped with sewage distribution pipes and packing brackets, and anaerobic packing is placed ;The lower part of the biological aerated filter is equipped with a backwash pipe (that is, an outlet pipe), a filter plate, an aeration pipe and biological filter material, and the upper part is equipped with a water inlet pipe and a backwash outlet pipe; the flocculation reaction zone adopts a folded plate structure; vertical flow The type sedim...

Embodiment 2

[0027] figure 2 Another process flow of the anaerobic aerobic flocculation sedimentation sewage treatment process of the present invention is shown. This process flow is suitable for sewage treatment with low phosphorus content. After that, it is driven by a water pump into the cyclone grit chamber to remove part of the suspended solids, and then the sewage enters the anaerobic membrane bed through the water distribution pipe for anaerobic biological treatment to remove some pollutants (COD Cr 、BOD 5 ), the residence time of sewage in the anaerobic membrane bed is 2 to 8 hours, and the volume load of the anaerobic membrane bed is 1.2 to 3.6kgCOD / m 3 .d; The water flowing out from the anaerobic membrane bed enters the biological aerated filter for aerobic biological treatment to further remove pollutants (COD Cr 、BOD 5 ), the residence time of sewage in the biological aerated filter is 1 to 4 hours, and the volume load of the biological aerated filter is 2.4 to 7.2kgCOD / m ...

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
Removal rateaaaaaaaaaa
Removal rateaaaaaaaaaa
Login to View More

Abstract

The invented sewage treatment process includes the following steps: making the sewage pass through grill and collecting well firstly, then feeding it into cyclonic settling pin by means of water pump, and making it flow into anaerobic membrane bed to make annaerobic biological treatment, then making the anaerobic-treated sewage flow into aerated biological filter pool to make aerobic biological treatment, then feeding the sewage into flocculation precipitation reaction tank, and discharging it. Said invention uses anaerobic membrane bed and aerated biological fitler pool as main body, uses flocculation precpitation as auxiliary measure, its efficiency is high and technological process is simple, and its application range is extensive.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic aerobic flocculation sedimentation sewage treatment process. Background technique [0002] In the existing sewage treatment process technology, the anaerobic membrane bed is an efficient sewage anaerobic treatment process, which has the advantages of fast start-up, sludge is not easy to lose, and fillers of different materials can be selected, but there is also a long reaction time. , the disadvantage of large pool volume; the biological aerated filter is also an efficient sewage aerobic treatment process. The biggest advantage of the biological aerated filter is that it integrates the functions of biological oxidation and interception of suspended solids, saving the secondary sedimentation tank; In addition, this treatment process also has the characteristics of large volume load, large hydraulic load, small footprint, low infrastru...

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): C02F1/52C02F3/30C02F9/14
Inventor 胡勇有黄瑞敏汪晓军周勤凌霄
Owner SOUTH CHINA 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