High-efficiency sewage treatment device and method of DBIO coupled aerobic granular sludge
By using a high-efficiency wastewater treatment device that couples aerobic granular sludge with DBIO, and employing a segmented treatment and intelligent control scheme, the problems of low efficiency and high cost of traditional wastewater treatment processes under low carbon-nitrogen ratio conditions are solved, achieving efficient removal of carbon, nitrogen, and phosphorus and improved sludge stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI JINDALAI ENVIRONMENT ENG CO LTD
- Filing Date
- 2026-05-20
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional wastewater treatment processes such as AAO and SBR are inefficient, require large areas, and have high operating costs in treating wastewater with low carbon-to-nitrogen ratios. DBIO and aerobic granular sludge systems suffer from poor sludge settling, limited resistance to shock loads, and a lack of intelligent control schemes, resulting in low granulation efficiency and limited volumetric load.
A high-efficiency wastewater treatment device with DBIO coupled aerobic granular sludge is designed, including an anaerobic zone, an anoxic zone, a micro-aerobic-aerobic coupling zone, and a sedimentation zone. It adopts a dual-zone water and air distribution system and an intelligent control scheme. The wastewater is treated in stages by transferring water pumps and air pumps, forming a granular sludge structure with an inner anaerobic layer and an outer aerobic layer. Combined with hydraulic shear force, it promotes microbial self-aggregation and achieves simultaneous nitrification, denitrification, and biological phosphorus removal.
It improves the stability and shock resistance of aerobic granular sludge, increases wastewater treatment efficiency, reduces carbon source addition, achieves efficient removal of carbon, nitrogen, and phosphorus, and lowers operating costs.
Smart Images
Figure CN122403642A_ABST