AS-H sequencing batch reactor
The Alfa Laval AS-H Sequencing Batch Reactor is an advanced technology for activated sludge biological wastewater treatment processes. It is ideal for processes that require flexibility of influent flow and organic load, and where effluent requirements are stringent. A patented floating decanter, menu of technology options, and the ability to work with challenging footprint limitations allow you to create a process that is tailored to deliver superior performance designed to your plant’s needs.
When flexibility and performance matter in your biological wastewater treatment process
- Simple robust design where all treatment steps occur in the same tank
- Fewer tanks and less equipment reduces cost
- Process guarantees available
- Highly automated process requires less manpower
- Easy to retrofit into existing plants and earthen lagoons, or available in a package plant configuration
How it works
The Alfa Laval ASH sequencing batch reactor brings together the key elements of advanced activated sludge technology including anaerobic, anoxic, cyclic aerobic, and sedimentation processes into a single automated reactor, cycling between each processing step to ensure that the time for each step is optimized.
The core of the system is a floating decanter, a leading technology for constant rate decanting for the best effluent quality and optimization of downstream processes. Constant rate decanting from the top water level to the bottom water level is achieved by the lowering of a circular and/or peripheral V-notched weir. The weir is stopped at a depth that produces the target decant flow rate. Once the target rate is achieved, the weir is stopped at that point and the head over weir principal ensures that this rate is maintained from top water level to bottom.
Patented Floating Decanter
At the core of the Alfa Laval AS-H SBR, is the floating decanter. There are several key features of this device that differentiate it from other solutions including:
- Adjustable V-notch weir to ensure precise decanting and minimize sludge disturbance
- Severe duty motors
- No underwater seals or valves
- Constant rate decanting
- Can be anchored anywhere within the aeration basin
The Alfa Laval AS-H floating decanter can also be purchased as a stand-alone product.
Flexible Process Control System
An expertly designed control system ensures optimum operation of your activated sludge SBR. Flexible options can range from:
- Flow proportional or Time-Based control
- True batch or Continuous Fill process
- User-friendly HMI, PLC, or a plant-wide SCADA system
Owners receive extensive training and ongoing support for their Alfa Laval AS-H SBR system.
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How can we help?
With industry-leading wastewater technology and expertise based on the experience of thousands of installations, we can help analyze your unique situation and select the optimal equipment model, configuration, and services for your needs and budget. Get in touch by submitting a general inquiry using the contact form below.
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