AAO (Anaerobic-Anoxic-Oxic)-biological contact oxidation strengthened denitrification and dephosphorization device and real-time control method of low C/N sewage treatment
A biological contact, nitrogen and phosphorus removal technology, applied in the field of sewage biological treatment, can solve the problems of difficult to achieve nitrogen and phosphorus removal effects, low denitrification and phosphorus removal efficiency, and low nitrification efficiency, and achieve enhanced denitrification and phosphorus removal effects, The effect of solving the contradiction between long and short mud ages and alleviating the shortage of carbon sources
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 1
[0036] The DO sensor 32 collects the dissolved oxygen concentration in each cell of the biological contact oxidation tank 4 online, and can realize the control of the nitrification process through the calculation output of the computer 33. The DO of the first two grids is controlled at 2.5~4.0mg / L, the DO of the last two grids is controlled at 0.5~2.0mg / L, and the total gas volume is 0.1~0.6m 3 / h. NH 4 + The sensor 28 collects the ammonia nitrogen concentration in the water tank 6 online, and obtains real-time control variables through the calculation output of the computer 33. When NH 4 + When the concentration is ≥2mg / L, increase the aeration volume to 0.5~0.6m 3 / h; When NH 4 + When the concentration is ≤0.5mg / L, reduce the aeration volume to 0.3~0.4m 3 / h; When NH 4 + Concentration ≤0.5mg / L and nitrite accumulation rate of effluent NO 2 - / NO x - When ≤30%, reduce the aeration volume to 0.1~0.2m 3 / h.
specific Embodiment approach 2
[0037] The DO sensor 32 collects the dissolved oxygen concentration in each cell of the biological contact oxidation tank 4 online, and can realize the control of the nitrification process through the calculation output of the computer 33. The DO of the first two grids is controlled at 2.5~4.0mg / L, the DO of the last two grids is controlled at 0.5~2.0mg / L, and the total gas volume is 0.1~0.6m 3 / h. NO 3 - Sensor 29 and NO 2 - The sensor 30 collects the concentration of nitrate nitrogen and nitrite nitrogen in the water tank 6 online, and obtains real-time control variables through the calculation output of the computer 33. When NO 3 - +NO 2 - When the concentration is ≥14mg / L, increase the reflux ratio of the nitrification solution to 300%~400%; when NO 3 - +NO 2 - When the concentration is less than or equal to 6mg / L, reduce the reflux ratio of the nitrification solution to 100% to 200%.
specific Embodiment approach 3
[0038] The DO sensor 32 collects the dissolved oxygen concentration in each cell of the biological contact oxidation tank 4 online, and can realize the control of the nitrification process through the calculation output of the computer 33. The DO of the first two grids is controlled at 2.5~4.0mg / L, the DO of the last two grids is controlled at 0.5~2.0mg / L, and the total gas volume is 0.1~0.6m 3 / h. The TP sensor 31 collects the TP concentration in the water tank 6 online, and obtains real-time control variables through the calculation output of the computer 33. When the TP concentration is greater than or equal to 1 mg / L, increase the reflux ratio of the nitrification solution to 300% to 400%; when the TP concentration is less than or equal to 0.2 mg / L, reduce the reflux ratio of the nitrification solution to 100% to 200%.
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