Innovative pier-supported drive mechanism
General Product Overview
The hydraulic differential approach is the key to the success
of Enviroquip's SS Series clarifiers. This process assures
that activated sludge is dense, fresh and spends minimum time
outside of the aeration process.
Sludge is drawn from the floor
of the basin to a suspended trough for removal by an artificially
create hydraulic differential.
Since the trough is open, it allows visual inspection of
the sludge from all pickup locations. The tubes can be cleaned
with a straight rod or hose from above without exposing the
operator to danger or removing the unit from service. A low
head loss transfer of return activated sludge is provided.
The
sludge suction tubes are large, typically four inches in
diameter, with no orifices. Since the tubes are large and straight,
the potential for clogging is minimized.
Squeegees rake sludge
to each riser tube location. Their raking pattern is designed
to cover any given part of the floor twice
per revolution.
All models are fitted with spray scum traps
which improve the full surface skimming ability of the units.
Scum ports situated
within the influent well remove a major portion of the scum
before it enters the clarifier. Additional ports at intervals
across the clarifier scum trough remove the remainder of
the scum. All units are built with access bridges, which make
it
easy to maintain the drive assembly and allow easier cleaning
of the return trough, and pickup tubes.
We manufacture several
models of SS Series clarifiers. The basic differences between
the models are the methods in which
the sludge is separated or discharged and scum is removed. Benefits/Features
- Truly non-clogging
- Eliminates bent tubes or underwater
orifices
- Same length draw tubes eliminate flow control
devices and provides balanced sludge removal
- Open troughs
allow viewing of sludge return from each tube to ensure
required pumping rates
- 95% of scum is removed inside
the influent well. SS3.5 with optional ScumTrappR
- Center pier design provides versatility
- Flocculating
inlet wells improve clarifier performance
- Available
in galvanized mild steel or type 316 stainless steel
Applications
CLARIFER PIER-SUPPORTED DRIVE MECHANISM
Enviroquip®, Inc.,
is proud to introduce an innovative pier-supported drive
mechanism with a key feature that makes
our clarifier and thickener mechanisms superior to the competition. One of the most common claims made by clarifier manufacturers
is that the unit is supplied with removable strip liners
that can be replaced without removing the access bridge.
What these manufacturers fail to mention is that the access
bridge is not the problem -- the drive cage is. The drive
cage, to which the collector arms are attached, must be unbolted
from the rotating portion of the drive mechanism to gain
access to the strip liners and bearing balls. The drive cage
and flight arms must be supported during the process, which
requires dewatering the clarifier to place supports under
the mechanism to hold it in place while repairs are being
made.
With the clarifier out of service, a waste treatment
plant runs the risk of an increase in suspended solids
being discharged
to the effluent due to excessive hydraulic loads being
applied to the remaining clarifiers. If a plant has only
one clarifier,
the problem is even more severe.
We have developed a revolutionary,
new, heavy-duty, center pier-supported internal spur gear
drive¹ that eliminates
this problem. Enviroquip's unique gear Clarifier
Drive is designed so that all critical
parts of the drive mechanism, such as the bearing raceways,
balls and gear set, can be disassembled and removed for repair
or replacement without disconnecting the drive cage and rake
arm assembly from the rotating portion of the drive mechanism.
Significantly, it is no longer necessary for the clarifier
or thickener basin to be dewatered in order to shore up the
drive cage and collector arms while repairs are performed.
Flow can continue through the clarifier while the disassembly
and reassembly procedure takes place. Instead of taking days,
repairs take only four to six hours. A clarifier can handle
the solids load over this time span without detrimental effects
to the process even though the rake arms are not rotating.
Even
more significant, all of the disassembly and repairs can
be done on the bridge platform surrounding the drive
mechanism (Jack Bolt
Drive)
with only a one-ton portable hoist, such as an engine hoist.
This eliminates the expense of a large mobile crane and
operator and the damage often caused to the landscaping.
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