Walden, Inc.

Walden, Inc.

Sequencing Batch Reactor (SBR)


The best municipal technology is now available for residential and commercial use. Sequencing batch reactors (SBR’s) have been around for a long time. They were operating successfully long before flow-through, activated sludge systems were designed. In flow-based systems, variables in the flow can cause upsets and incomplete treatment. Because the SBR process is time-based rather than flow-based, there is much more control of the treatment process – both in multiple and single tank systems.

  • Modular Design tanks operate in parallel, so a single tank can be taken off-line during low-flow seasons or for maintenance. With Walden’s incremental tank system, you can start small and add on as you grow.
  • No Clarifer Tanks means less valuable space required for Walden treatment systems.
  • No Sludge Return Pumps means less operator time needed for managing sludge inventory.
  • Easy Maintenance. Walden’s high quality mechanical components need only routine lubrication and an oil change. Interior finish cleans quickly.
  • All components are non-corrosive.
  • Perfect settling conditions. Because the process is controlled, quiescent settling conditions are obtained.
  • Short Circuiting Eliminated. Baffling and long, narrow tanks prevent short-circuiting.
  • Handles Shock-loading. Time-based, rather than flow-based process.
  • Nutrient Removal capabilities. Easily obtained with change in operating strategy.
  • Filamentous Growth easily controlled. Vary operating strategies to produce results.

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