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Micro-screen
Rotating Drum Filtration |
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Micro-screen
Rotating Drum Filters, or “Drum Filters”
are an alternative to sand filtration especially
when excessive waste water is a concern. The filtering
process of Drum Screen Filters is very simple,
yet
very efficient and reliable due to their overall
design
and operation. Drum Filters are designed with
few
moving parts to ensure a long life with low operating/
maintenance costs.
Micro-screening
essentially captures particles on a screen fabric
while letting the water pass. Consider Drum Filters
as an alternative to sand filters, especially
with mammal and bird bathing pool applications,
where hair and
feathers can create havoc with filter internals.
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| Features: |
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| • Superior solid
waste filtering when compared to sand filtration, especially
when filtering animal hair and feathers.
• Reduced waste water generated
when compared to sand filtration.
•
Liquid-level or timer initiated intermittent pressure
spray wash system cleans the filter screens automatically.
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•
Filter screen panels are easily changed, the press ion
woven polyester filter fabric is available in a variety
of micron porosities.
• Robust design
and construction, available in 316 stainless steel.
• Removable full
cover
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1.
Inlet
2. Outlet
(not shown)
3. Solids
outlet
4. Rinse
water connection
5. Back-wash
header
6. Drive
unit (not shown)
7. Filter
panels
8. Rubber
lip sealing
Filter Screen Panels simplify replacement
or changing the micron porosity with the number of panels
dictated by the drum size. This facilitates maintenance
and allows for easy adapting for a variety of filtering
needs. |
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How
Drum Filters Work
1. Waterborne solid waste particles enter the
Drum Filter via the inside of the rotating drum. The rotating
drum is actually a frame with mounted filter panels. The
filter panels use a polyester or stainless steel filter
cloth that is of a specific micron porosity.
2.
Water laden with solid waste enters the filter via the
inside of the rotating drum.
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3.
Solid waste particles (larger than
the micron porosity rating of the filter screens) are
captured on the filter screens.
4. Water passes through the filter
screens.
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5.
A float level switch or timer initiates filter screen
rinse.
6. The rinse sprays off solid waste
particles into the waste trough where they are collected
and then exit the filter. |
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Moving
back-wash system is available only
on the belt driven drum filters. This patented innovation
reduces the need of back-wash which in turn saves energy
and filter media.
Note:
Micro-screens are designed for low-
head pressure operation and requrer precise poitioning
(vertical) within the application
(filter loop.) Micro-screen filters typically operate
with a gravity inlet/pressure (pump) outlet or pressure
(pump) inlet/gravity outlet. These consideration must
be ecaluated
during the application design phase.
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316 Stainless Steel Micro-Screen
Drum Filter Specifications
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| Part
# |
Flow
Rate
Approx. |
Screen
Opening |
Float
Initiated
Rinse |
High
Pressure
Rinse/PSI |
Freshwater
Rinse/GPM |
No.
of
Filter
Panels |
Filter
Area
(ft²) |
Drive
Motor
(hp)
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| HDF
5011P |
150
GPM |
60µm |
Yes |
Yes/100 |
Yes/3.2 |
2 |
4.84 |
1/4 |
| HDF
8011P |
300
GPM |
60µm |
Yes |
Yes/100 |
Yes/4.75 |
2 |
10.33 |
1/3 |
| HDF
8021P |
700
GPM |
60µm |
Yes |
Yes/100 |
Yes/9.5 |
4 |
20.67 |
1/3 |
| HDF
12021P |
900
GPM |
60µm |
Yes |
Yes/100 |
Yes/9.5 |
6 |
31.0 |
1/2 |
| HDF
12031P |
1,400
GPM |
60µm |
Yes |
Yes/100 |
Yes/14.25 |
9 |
46.5 |
1/2 |
316 Stainless Steel Micro-Screen
Drum Filter Maximum Flow Rates
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| Part
# |
40µm
Screen Opening |
60
µm
Screen Opening |
90
µm
Screen Opening |
| HDF
5011P |
143
GPM |
174
GPM |
222
GPM |
| HDF
8011P |
380
GPM |
476
GPM |
571
GPM |
| HDF
8021P |
761
GPM |
951
GPM |
1,141
GPM |
| HDF
12021P |
1,141
GPM |
1,427
GPM |
1,712
GPM |
| HDF
12031P |
1,712
GPM |
2,140
GPM |
2,568
GPM |
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