Control method for N2O reduction in sewage biological nitrogen removal process and system
A control method, sewage biological technology, applied in the direction of water treatment parameter control, water pollutants, biological treatment devices, etc., can solve the problems of excessive dosage of exogenous nutrients, excessive aeration, variable influent water quality, etc. , to avoid excess carbon sources, reduce aeration, and reduce energy consumption
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0057] Example 1
[0058] A sewage biological denitrification process N 2 The O reduction control method is applied to the SBR treatment process of sewage with a C / N ratio of 8:
[0059] In the water intake phase, set the time T 1 For 5min;
[0060] In the facultative / anaerobic stage, set the time T 2 5min, set time T 3 15min; set value α is -5, set time T 4 30S, set time T 5 90min, the setting value β is -300mV, the external nutrient added is sodium acetate, the average dosage is 10mL each time, and the concentration is 1mg·L -1 , Set time T 6 20min;
[0061] In the aerobic phase, set the time T 7 120min, set time T 8 15min;
[0062] In the water discharge stage, set the time T 9 30min, set time T 10 2min, set time T 11 For 5min.
[0063] After one cycle of control to treat 1L of sewage, it was found through monitoring that the ammonia nitrogen removal rate reached 99%, and the total amount of sodium acetate added was 12g, N 2 The total amount of O released is within 5.4mg, and the aera...
Example Embodiment
[0064] Example 2
[0065] A sewage biological denitrification process N 2 The control method of O reduction is similar to that of Example 1, except that it is applied to the SBR treatment process of sewage with a C / N ratio of 10.
[0066] In the water intake phase, set the time T 1 Is 3min;
[0067] In the facultative / anaerobic stage, set the time T 2 6min, set time T 3 20min; set value α is -5, set time T 4 Is 20S, set time T 5 80min, the setting value β is -300mV, the external nutrient added is sodium acetate, the average dosage is 10mL each time, and the concentration is 1mg·L -1 , Set time T 6 15min;
[0068] In the aerobic phase, set the time T 7 100min, set time T 8 20min;
[0069] In the water discharge stage, set the time T 9 40min, set time T 10 1min, set time T 11 For 3min.
[0070] After one cycle of control to treat 1.5L of sewage, it was found through monitoring that its ammonia nitrogen removal rate reached 97%, and the total amount of sodium acetate added was 10g, N 2 The ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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