A food wastewater treatment system and method based on coupling of SBR and granular sludge
By optimizing the food wastewater treatment system through the time-series coupling operation strategy of SBR and granular sludge, the problems of granular sludge cultivation stability and sludge settling were solved, achieving efficient nitrogen and phosphorus removal, which is suitable for food wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING ENTERPRISES ENVIRONMENTAL PROTECTION EQUIPMENT GUANGDONG CO LTD
- Filing Date
- 2026-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to maintain the cultivation and long-term stable operation of aerobic granular sludge when treating food wastewater. Traditional SBR processes exhibit poor sludge settling under high loads, making it difficult to simultaneously achieve nitrogen and phosphorus removal, resulting in low treatment efficiency and high energy consumption.
A time-coupled operation strategy based on SBR and granular sludge is adopted. By adjusting the combination of homogenization treatment, anaerobic and aerobic reactors, the operation cycle and micro-ecological metabolic cycle are precisely matched, and the functional structure of granular sludge is enhanced, including the design of stirring, aeration and sludge discharge systems, so as to achieve optimization of sludge settling performance and simultaneous removal of pollutants.
It achieves good sludge settling performance, stable operation, and significant nitrogen and phosphorus removal effects, and does not require a secondary settling tank, thus efficiently treating food wastewater and fully leveraging the advantages of granular sludge technology.
Smart Images
Figure CN122403641A_ABST