Supercharge Your Innovation With Domain-Expert AI Agents!

Two-stage synchronous nitrification denitrification process for treating ammonia nitrogen wastewater

A technology for simultaneous nitrification and ammonia nitrogen wastewater, applied in the field of sewage treatment, can solve the problem of difficult to achieve simultaneous nitrification and denitrification, and achieve the effect of large application potential and high removal rate

Inactive Publication Date: 2006-12-27
HARBIN INST OF TECH
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the many and complex factors affecting simultaneous nitrification and denitrification, factors such as DO, C / N, ORP, sludge floc morphology, pH value, temperature, and sludge age all have an important impact on simultaneous nitrification and denitrification. It is difficult to realize simultaneous nitrification and denitrification in actual engineering

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

specific Embodiment approach 1

[0007] Specific implementation mode 1: Taking the reactor to treat ammonia nitrogen sewage as an example, the method described in this implementation mode is realized through the following steps:

[0008] 1. Prepare the following medium and acclimatization medium:

[0009] 1. Different oxygen nitrification separation medium: NH 4 Cl 0.382g, sodium acetate 2g, MgSO 4 ·7H 2 O 0.05g, K 2 HPO 4 0.2g, NaCl 0.12g, MnSO 4 4H 2 O 0.01g, FeSO 4 0.01g, H 2 O 1000ml, pH=7~7.5, sterilized at 121°C for 20min.

[0010] 2. Aerobic denitrification separation medium: sodium succinate 4.7g, KNO 3 1.5g, NaNO 2 0.5g, KH 2 PO 4 0.5g, MgSO 4 ·7H 2 O 0.1g, trace element solution 2ml, H 2 O 1000ml, sterilized at 121°C for 20min. The composition of trace element solution is: EDTA 50g / l, ZnSO 4 2.2g / l, CaCl 2 5.5g / l, MnCl 2 4H 2 O5.06g / l, FeSO4 7H2O 5.0g / l, (NH4) 6 Mo 7 o 2 4H 2 O 1.1g / l, CuSO 4 ·5H 2 O 1.57g / l, CoCl 2 ·6H 2 O 1.61 g / l.

[0011] 3. Aerobic denitrifica...

specific Embodiment approach 2

[0018] Specific implementation mode two: In this implementation mode, the reactor treatment of ammonia nitrogen sewage is taken as an example:

[0019] 1. For the screening of heterotrophic nitrifying bacteria, put the water sample aside and discard the supernatant, take the activated sludge and inoculate it in the heterooxygenation nitrification liquid separation medium, the inoculum size is 5%, 30 ℃, 120rpm constant temperature oscillation cultivation, see When there is obvious growth (increased turbidity of the culture medium by visual inspection), transfer to fresh medium for shaking culture, use a sterilized pipette to absorb 10 mL of the culture medium that has been enriched and acclimatized, and add it to a Erlenmeyer flask containing 90 mL of sterilized water , add a few glass beads, shake fully; prepare serial dilutions, take 10 -5 ~10 -8 One drop each of the dilutions was spread on the heterooxynitration solid separation medium plate with a sterilized spatula, two p...

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 disposing method of ammonia nitrogen waste water in the effluent disposal technological domain, which is characterized by the following: sieving heterotrophic nitrobacteria and aerobic denitrobacteria with stronger environment adaptive ability to nitrate and denitrate simultaneously; constructing mud nitrated and denitrated system to dispose waste water with nitrogen simultaneously to satisfy different DO densities.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to a treatment method for ammonia nitrogen wastewater. Background technique [0002] Three different biological reactions usually occur in the biological denitrification process of urban sewage, namely aerobic oxidation of organic matter, nitrification and denitrification. Most biological denitrification processes separate the anoxic zone from the aerobic zone, forming the so-called pre-denitrification or post-denitrification process, because according to the traditional denitrification theory, nitrification and denitrification reactions cannot occur at the same time . In recent years, many tests and reports abroad have proved that nitrification and denitrification can be carried out in the same reactor under the same operating conditions, which is called simultaneous nitrification and denitrification. This method can not only overcome the existing problems of traditional bio...

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): C02F3/30
Inventor 马放苏俊峰杨基先
Owner HARBIN INST OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com