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SBR
Lab Tests
Modem
Control
Projects
Contacts |
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That's S B R
process
Sequencing Batch Reactor
The best municipal technology is now
available for residential and commercial use.
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1. PLC
control and Modem as standard equipment. 2. Unique floating decant.
3. Gasketed covers control noise and odor. 4. Course bubble
diffusers. 5. Positive displacement blowers. 6. Accessible
screening chamber. |
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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. Here's what the E.P.A. has to
say:
"The SBR process has widespread application
where mechanical treatment of small wastewater flows is desired. Because it
provides batch treatment...it is ideally suited for....wide variations in flow
rates... operation in the "fill and draw" mode prevents the "washout" of
biological solids that often occurs with extended aeration systems.... Another
advantage of SBR systems....is that they require less operator attention
yet....produce a very high quality effluent."
| EPA Manual, "Wastewater
Treatment/Disposal for Small Communities," Office of Research &
Development, Office of Water, Sept. 1992. |
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Walden Features:
- 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 compoents need only routine lubrication and an oil change.
Interior finish cleans quickly.
- All compoents are
non-corrosive.
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Wait, theres more!
- Perfect settling conditions.
Because the process is controlled, quiescent setttling 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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How it works...
| typical
SBR process |
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special
Walden features |
| Wastewater fills the tank, mixing
with biomass that settles during the previous cycle |
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Walden treatment tanks are made
out of non-corrosive fiberglass. Our unique modular design allows for future
expansion. |
| Air is added to the tank to aid
biologial growth and facilitate subsequent waste reduction. |
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Corrosion resistant components
are the Walden standard. Non-clog course bubble insures consistent air
flow. |
| Mixing and aeration stop during
this stage to allow solids to settle to the bottom of the tank |
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The baffled influent screening
compartment prevents short circuiting and simplifies cleaning of all Walden
treatment systems. |
| Clarified effluent is
discharged. |
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Walden's proprietary floating
decant system excludes solids while remaining accessible in the event of pump
failure. No need for confined space entry. |
| If necessary, sludge removal
occurs during this stage. |
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Because Walden utilizes extended
aeration, sludge production is minimized, which means greater savings in the
cost of sludge disposal. |
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All rights reserved - Walden Corporation
2001 |
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