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

Anaerobic ammonia oxidization granule sludge starting method for treatment of urban sanitary sewage

A technology for urban domestic sewage and anaerobic ammonia oxidation, which is applied in anaerobic digestion treatment and other directions, and can solve problems such as low treatment load

Active Publication Date: 2013-04-24
BEIJING UNIV OF TECH
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the anaerobic ammonium oxidation process under normal temperature generally has the problem of low processing load

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 ammonia oxidization granule sludge starting method for treatment of urban sanitary sewage
  • Anaerobic ammonia oxidization granule sludge starting method for treatment of urban sanitary sewage
  • Anaerobic ammonia oxidization granule sludge starting method for treatment of urban sanitary sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The test device is an upflow anaerobic sludge bed reactor, such as figure 1 shown. The test device is made of plexiglass, with an inner diameter of 100mm, a height of 2.0m, a total volume of 20L, and an effective volume of 12L. The upper 1 / 3 of the reaction zone in the column is filled with volcanic rock filter material with a particle size of 4-5mm, and the filling height is 0.5m. There is a sampling port every 100mm on the wall of the filter tank, the water flow direction is upward flow, and there is a water outlet at the top.

[0026]The sludge mixed with anaerobic ammonium oxidation sludge and short-course nitrification activated sludge at a mass ratio of 5:1 was used for inoculation, and the initial influent total nitrogen concentration was controlled at 240-260 mg / L, and nitrite nitrogen and ammonia nitrogen The element concentration ratio is 1.25-1.35, the reactor temperature is controlled at 28-33°C, and the low cross-sectional flow velocity is used for conti...

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 diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to an anaerobic ammonia oxidization granule sludge starting method for the treatment of urban sanitary sewage, and belongs to the field of water environment restoration and regeneration. According to the method, an upflow anaerobic sludge bed is adopted by a reactor; volcanic rock fillers with the particle diameter of 4 to 5mm are filled in one fourth to one third volume of the upper part of the reactor and are inoculated with the mature anaerobic ammonia oxidation and nitrosation mixing sludge, i.e. the granule sludge is cultured gradually at the low filtering rate; next, the granule sludge is cultured in a strengthening manner by continuously raising the section filtering speed; the treatment capacity of the granule sludge is strengthened by changing the water quality; and finally the granule sludge can be used for the treatment of the sanitary sewage. After 145 days, the average particle diameter of the granule sludge reaches 2.0mm, so that the granule sludge is capable of treating the sanitary sewage of 40 to 50mg / L, i.e. the water quality of effluent water reaches 1A standard, and the load reaches 3kg / m3 / d. Therefore, the method provided by the invention is suitable for the starting of an upflow anaerobic ammonia oxidization granule sludge reactor for the treatment of the urban sanitary sewage.

Description

technical field [0001] The invention belongs to the field of water environment restoration and regeneration. Specifically, it relates to a method for starting anaerobic ammonium oxidation (ANAMMOX) granular sludge used for treating normal temperature, low ammonia nitrogen urban domestic sewage. Background technique [0002] Since the Eleventh Five-Year Plan, the state has stepped up efforts to control environmental pollution, especially in the restoration of the water environment, and implemented a major national science and technology project - Water Pollution Control and Treatment, with an investment of 11.266 billion yuan. This figure will further increase to more than 14 billion yuan. This move is to solve the problem of water eutrophication caused by excessive discharge of nitrogen and phosphorus in recent years. According to the 2011 Environmental Status Bulletin, the surface water in the country is generally slightly polluted, the eutrophication of lakes is serious,...

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): C02F3/28
Inventor 李冬高伟楠吴迪李德祥梁瑜海王斌杨卓杨胤何永平张翠丹张玉龙吴青周元正苏庆岭门绚曾辉平张杰
Owner BEIJING 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