A method for realizing short-term denitrification process of urban sewage by using delayed anaerobic/low-carbon anoxic SBR

A short-range denitrification and urban sewage technology, applied in the field of sewage biological treatment, can solve the problems of lack of effective methods for startup and process control, and achieve the effects of saving additional carbon sources, enhancing utilization efficiency, and stabilizing nitrite accumulation rate

Active Publication Date: 2021-10-01
BEIJING UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the short-range denitrification process using complex organic carbon sources in urban sewage as electron donors has not been realized, and there is still a lack of effective methods for its start-up and process regulation

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
  • A method for realizing short-term denitrification process of urban sewage by using delayed anaerobic/low-carbon anoxic SBR

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0023] The system consists of the following parts: Sequencing batch SBR reactor (1); submersible mixer (1.1); float level gauge (1.2); first electromagnetic drain valve (1.3); second electromagnetic drain valve (1.4 ); the third electromagnetic drain valve (1.5); the first emptying valve (1.6); COD concentration sensor (1.7); nitrate concentration sensor (1.8); ammonia nitrogen concentration sensor (1.9); multi-parameter online monitor (1.10) ;Secondary effluent storage tank of sewage plant (2); the first water inlet pump (2.1); the first overflow pipe (2.2); the second emptying pipe (2.3); urban sewage storage tank (3); Inlet pump (3.1); second overflow pipe (3.2); third vent pipe (3.3); outlet water reservoir (4); third overflow pipe (4.1); fourth vent pipe (4.2); PLC automatic control system (5); online parameter controller (5.1); reactor operation controller (5.2...

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

A method for realizing short-range denitrification process of urban sewage by using delayed anaerobic / low-carbon anoxic SBR belongs to the technical field of sewage biological treatment. Focusing on the bottleneck problem that the anammox nitrite in urban sewage is difficult to obtain stably at this stage, this method adopts a sequencing batch SBR reactor, and controls the operating parameters such as the ratio of urban sewage to the secondary effluent of the sewage plant, anoxic stirring time, etc., so that The reactor operates continuously in the mode of delayed anaerobic / low-carbon anoxic to realize the start-up of short-range denitrification provided by urban sewage as an organic carbon source. The method strengthens the utilization efficiency of the organic carbon source of urban sewage by the short-range denitrification bacteria group, can obtain a stable nitrite accumulation rate, realize the enrichment of short-range denitrification functional microorganisms, and thereby realize the establishment of a short-range denitrification system. The method uses the nitrite obtained from urban sewage, which is one of the important substrates in the anammox process, and is of great significance for the subsequent realization of the deep denitrification of urban domestic sewage by anammox.

Description

technical field [0001] The invention proposes a method for realizing the short-range denitrification process of urban sewage by using a time-delayed anaerobic / low-carbon anoxic SBR, which belongs to the technical field of sewage biological treatment. It is suitable for urban sewage with low carbon-to-nitrogen ratio and the secondary effluent of sewage treatment plants containing nitrate. It has the characteristics of stable accumulation of nitrite, saving additional carbon sources, and easy and flexible regulation. Background technique [0002] Anaerobic ammonium oxidation denitrification technology is a new key technology for energy-saving and consumption-reducing sewage biological treatment. 2 - -N (nitrite nitrogen) to NH 4 + -N (ammonia nitrogen) is oxidized to achieve autotrophic denitrification. Compared with the traditional denitrification process, it can save 60% of the aeration energy consumption. It also has the characteristics of no need for external carbon sou...

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 Patents(China)
IPC IPC(8): C02F3/30C02F3/28C02F3/12C02F101/16
CPCY02W10/10
Inventor 彭永臻范泽里杜睿王淑莹
Owner BEIJING 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