A2/O+A/O technique wastewater biological denitrification phosphorous removal process and its device
A nitrogen and phosphorus removal and sewage biological technology, applied in the field of A2/O+A/O process sewage biological nitrogen and phosphorus removal technology and its device, can solve the problem of unstable treatment effect of single sludge biological nitrogen and phosphorus removal process, Low compliance rate and other issues, to achieve the effect of saving COD consumption, reducing sludge production, and reducing oxygen consumption
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0032] During the test, A 2 / O process adopts synthetic beer wastewater (COD=25 1-406mg / L, total nitrogen TN=44.6-65.4mg / L and total phosphorus TP=7.1-11.5mg / L, C / N=6.5-7.4, C / P=40.1-57.2), the hydraulic retention time is 9h, the sludge age is 10-12d, the sludge concentration is 3500±100mg / L, the sludge reflux ratio is 0.5, the pH of the influent is controlled at 7.2-7.6, and the temperature is controlled by the heating rod. 20-23°C,. The test results show that the ratio of denitrification phosphorus uptake to aerobic phosphorus uptake is 15%, COD removal rate is 85%, TN and TP removal rates are 69% and 75% respectively.
example 2
[0034] During the test, the A / O process was adopted to adopt artificially synthesized beer wastewater (COD=25 1-406 mg / L, total nitrogen TN=44.6-65.4mg / L and total phosphorus TP=7.1-11.5mg / L, C / N= 6.5-7.4, C / P=40.1-57.2), hydraulic retention time 9h, sludge age 10-12d, sludge concentration 3500±100mg / L, sludge reflux ratio 0.5, control influent pH to stabilize at 7.2-7.6, The temperature is controlled at 20-23°C by a heating rod. The test results show that the ratio of denitrification phosphorus uptake to aerobic phosphorus uptake is 0%, COD removal rate is higher than 86%, TN and TP removal rates are 76% and 15% respectively.
example 3
[0036] During the test, A 2 / O+A / O process synthetic beer wastewater (COD=222-256 mg / L, total nitrogen TN=67-73mg / L and total phosphorus TP=6.3-6.8mg / L, C / N=3.4-3.9, C / P=35.2-38.5), the hydraulic retention time is 9h, the sludge age is 10-12d, the sludge concentration is 3500±100mg / L, the sludge reflux ratio is 0.5, the pH of the influent is controlled at 7.2-7.6, and the temperature is controlled by the heating rod Control at 20-23°C, turn on the aeration when investigating low C / N ratio, and turn off the mixer and bypass pump. from A 2 The test results of / O+A / O process show that (Figure 1, 2 and 3), the ratio of denitrification phosphorus uptake to aerobic phosphorus uptake is 45%, COD removal rate is higher than 80%, TN and TP removal The rates were 71% and 83%, respectively.
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com