ODOR
CONTROL – “It’s not just odors you need to consider”
When
deciding on the most appropriate and cost effective odor control technology
for your specific application, there are many aspects that must be taken into
account to get the best solution. Most of the time it is based on costs and
effectiveness. In some cases however, there are other challenges that must be
over come. This is the case with the City of Lake Oswego, OR – Palisades
Terrace Lift Station.
As shown in the following pictures, the site had many
obstacles. The obvious one was the fact that the system was to be placed in an
underground lift station vault in the driveway outside the front door of a
multi-million dollar home located on the shores of Lake Oswego. The lift
station was built many years ago before the house was constructed and was in
need of upgrading. This presented design considerations that included odor
treatment effectiveness, size, noise, aesthetics, and long-term maintenance.
The
HAWK Radial Flow Odor Control System™ was chosen for this application
due to its ability to meet all of these needs. The face velocity of HAWK
radial flow system allows it to have a much smaller footprint than an up-flow
packed bed system. Also, the radial flow kinetics produces lower pressure drop
through the media bed, which results in a lower horsepower motor and smaller
fan to be used. This will cause much lower electrical costs and reduced noise
levels.
As shown, the system fit nicely into the pre-existing space
that could not be changed. The system is comprised
of HAWK adsorber canister, flexible ductwork, damper, and FRP fan with
sound enclosure. This system
can handle up
to 500 cfm with concentrations of hydrogen sulfide and organic orders up to 50
ppm.
The HAWK line comes in either stand-alone canisters
or complete skid mounted systems to fit your specific project needs. These
systems are built of FRP with premium resin and high manufacturing standards for
long-term, maintenance free operation. The systems can handle up to 20,000 cfm
per canister and comes in seven standard sizes, based on airflow and treatment
needs.
The
HAWK utilizes radial flow operation as shown. This allows much lower pressure
drop, in a smaller footprint, than standard up flow packed bed. The system also
eliminates the problem of bed expansion and media fluidization that causes media
fragmentation and increased pressure drop.
The
graph below shows the relative pressure drop with airflow comparison between
HAWK radial systems and standard up flow packed bed systems.
The
resulting reduced pressure drop allows for lower horsepower motors than can have
considerable savings over time as shown below.
System Comparison
Motor HP Comparison
Difference
in Electrical Costs $/yr.
10
year Cost Difference
HAWK
500 vs. HF-400
1.0 vs. 1.5
$327
$3,270
HAWK
2000 vs. HF-2000
3.5 vs. 10
$4,246
$42,460
HAWK
5000 vs. Deep Bed 6000
10 vs. 25
$9,798
$97,980
HAWK
7500 vs. Deep Bed 8500
15 vs. 30
$9,798
$97,980
HAWK
10000 vs. Deep Bed 12000
20 vs. 40
$13,065
$130,650
HAWK
15000 vs. Deep Bed 15000
35 vs. 60
$16,331
$163,310
Please
contact your local Bay Products representative or contact Bay Products directly
for information on how the HAWK line of radial flow systems can help with your
odor control needs.
