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

Quick starting method for realizing nitrogen and phosphorus removal of SBR (Sequencing Batch Reactor) system

A rapid start-up, nitrogen and phosphorus removal technology, applied in chemical instruments and methods, water treatment parameter control, water/sludge/sewage treatment, etc., to achieve co-enrichment, rapid growth, and good nitrogen and phosphorus removal effects Effect

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing technologies regulate the system from the technical aspect. Due to the differences between microorganisms, especially the start-up process, there are still certain limitations in achieving rapid start-up by regulating parameters.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The laboratory builds a SBR system with an effective volume of 10L to treat sewage with an ammonia nitrogen concentration of 100mg / L, a total nitrogen concentration of 150mg / L, a COD concentration of 300mg / L, and a total phosphorus concentration of 10mg / L. The material of the reactor is plexiglass, and the ammonia nitrogen online monitoring instrument and the dissolved oxygen (DO) online monitoring instrument are installed in the reactor to control the start and stop of the aeration system and the regulation of each reaction stage respectively.

[0032] First, the activated sludge containing nitrifying bacteria and phosphorus accumulating bacteria in the secondary sedimentation tank of a sewage field was inoculated in the SBR reactor according to the sludge concentration of 2800mg / L; the removal rate of nitrogen and phosphorus at the initial stage of inoculation was about 46%. The nitrogen and phosphorus-containing wastewater to be treated enters the SBR reactor to start...

Embodiment 2

[0038] The laboratory builds a SBR system with an effective volume of 10L to treat sewage with an ammonia nitrogen concentration of 150mg / L, a total nitrogen concentration of 200mg / L, a COD concentration of 380mg / L, and a total phosphorus concentration of 12mg / L. The material of the reactor is plexiglass, and the ammonia nitrogen online monitoring instrument and the dissolved oxygen (DO) online monitoring instrument are installed in the reactor to control the start and stop of the aeration system and the regulation of each reaction stage respectively.

[0039] First, the activated sludge containing nitrifying bacteria and phosphorus accumulating bacteria in the secondary sedimentation tank of a sewage field was inoculated in the SBR reactor according to the sludge concentration of 3000mg / L; the removal rate of nitrogen and phosphorus at the initial stage of inoculation was about 47%. The nitrogen and phosphorus-containing wastewater to be treated enters the SBR reactor to start...

Embodiment 3

[0045] The laboratory builds a SBR system with an effective volume of 10L to treat sewage with an ammonia nitrogen concentration of 200mg / L, a total nitrogen concentration of 300mg / L, a COD concentration of 500mg / L, and a total phosphorus concentration of 15mg / L. The material of the reactor is plexiglass, and the ammonia nitrogen online monitoring instrument and the dissolved oxygen (DO) online monitoring instrument are installed in the reactor to control the start and stop of the aeration system and the regulation of each reaction stage respectively.

[0046] First, the activated sludge containing nitrifying bacteria and phosphorus accumulating bacteria in the secondary sedimentation tank of a sewage field was inoculated in the SBR reactor according to the sludge concentration of 4000mg / L; the removal rate of nitrogen and phosphorus at the initial stage of inoculation was about 48%. The nitrogen and phosphorus-containing wastewater to be treated enters the SBR reactor to start...

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 discloses a quick starting method for realizing nitrogen and phosphorus removal of an SBR (sequencing batch reactor) system. The method comprises the following steps: (1) setting an operation cycle in the starting process of the SBR system; an operation mode of gradually increasing the water inlet volume load is adopted in the starting process; the starting process comprises a plurality of periods, the reaction in the previous period is in an aeration-non-aeration alternate operation mode, and when the water inlet volume load reaches 40%-65% of the designed water inlet volume load, the operation mode of the reaction in the current and subsequent operation periods is adjusted to be an anaerobic stirring-anoxic stirring-aerobic aeration mode; and (2) inoculating activated sludge containing nitrifying bacteria and phosphorus-accumulating bacteria in the SBR reactor, enabling the nitrogen and phosphorus-containing wastewater to be treated to enter the SBR reactor to start the starting process, running according to the requirements of the step (1), and finishing the starting process of the SBR system until the ending requirements are met. According to the method, rapid enrichment culture of nitrifying bacteria and denitrifying phosphorus-accumulating bacteria in a short time can be achieved, and then the nitrogen and phosphorus removal function of the SBR system is rapidly started.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, and in particular relates to a quick start method for realizing denitrification and dephosphorization of an SBR system. Background technique [0002] SBR (Sequenced Batch Activated Sludge Process) is a widely used biological nitrogen and phosphorus removal process, which can remove carbon, nitrogen and phosphorus pollutants in sewage in the same reactor, and requires nitrifying bacteria with different functions , denitrifying bacteria and phosphorus accumulating bacteria play their respective roles under different conditions. Among them, nitrifying bacteria belong to aerobic autotrophic microorganisms, which grow slowly and have a long generation time, so it is not easy to cultivate quickly; denitrifying bacteria are mostly heterotrophic facultative bacteria, which convert nitrate and / or nitrite into nitrogen; Phosphorus accumulating bacteria are heterotrophic microorgani...

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): C02F3/30
CPCC02F3/301C02F3/308C02F2203/004C02F2203/006C02F2209/08C02F2209/14C02F2209/16C02F2209/02C02F2209/06C02F2209/22Y02W10/10
Inventor 孙丹凤高会杰王刚陈明翔
Owner CHINA PETROLEUM & CHEM CORP
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