ASH sequencing batch reactor
The Alfa Laval ASH Sequencing Batch Reactor (SBR) is an advanced biological wastewater treatment technology engineered for high performance and reliability. Using the activated sludge process in a sequential batch operation, it meets the most stringent effluent standards and offers exceptional flexibility for communities and industries with decant rates exceeding 25,000 gallons per minute (gpm).
Experience the all-in-one sequencing batch reactor solution for municipal and industrial wastewater treatment
- Simple robust design where all biological wastewater treatment process steps occur in the same tank
- Integrating all key stages—anaerobic, anoxic, aerobic and sedimentation—into one reactor maximizes efficiency, reduces footprint and reduces cost
- Ideal for municipal and industrial wastewater requiring consistent effluent quality under variable flows and loads
- Advanced automation and process control simplify operations, requiring less manpower
- Easy to retrofit into existing plants and earthen lagoons, or available in a package plant configuration
Benefits of SBR wastewater treatment for variable flows and loads
The sequential batch reactor process is suitable for treating all types of biodegradable wastewater, removing biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), as well as key nutrients like nitrogen and phosphorus. It provides optimized control of the SBR wastewater treatment process with advanced automation and flexibility. Unlike conventional systems, this sequencing batch reactor solution integrates all activated sludge functions into a single reactor, eliminating the need for separate basins for anaerobic, anoxic, cyclic aerobic, and sedimentation stages.
Especially suited for applications where influent flow and organic loads vary and effluent requirements are stringent, this all-in-one solution of sequencing batch reactors comes complete with floating decanters, blowers, a diffused aeration system, mixers, waste sludge pumps, motorized influent and air control valves, plus full instrumentation and a process control center. Engineered for flexibility, it fits numerous basin geometries and is ideal for both new installations and retrofits of existing basins or lagoons.
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