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Sewer
lift stations collect wastewater streams from residential, commercial or public
buildings, and transfer their contents to a municipal plant for treatment.
Hence, everything we flush down a drain, ends up in a sewer lift station. Lift
stations are below grade, gravity fed cylindrical sumps, constructed of
concrete or fiberglass with depths ranging from 6 to 30 feet. They are
typically daisy chained together to create a liquid highway through which
wastewater can be transported over many miles, from source to treatment. There
are three main application segments in the lift station market including
industrial wastewater, municipal sewer and municipal storm water. Wastewater
enters lift stations from the top and is removed from the bottom using two
transfer pumps. The pumps are typically submersed within the sump or located
next to the lift station in a pump house. Lift stations are crowded, dynamic
environments with ladders, pipes, pumps, rails, electrical, sensors and waste
streams pouring in from one or more sources. Wastewater can be dirty, foaming,
viscous or oily with sludge and particulates, making it difficult to measure
reliably. The primary requirement for this application is to monitor the liquid
level, periodically transfer the wastewater from the lift station to another
location, and prevent it from overflowing or running dry. |
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Stormwater
lift stations collect rain and melting snow or ice from urban streets and
highways to control flooding, reclaim water and protect the environment. If it
washes down a street drain, it ends up in a stormwater lift station. Lift
stations are below grade, gravity fed cylindrical or rectangular sumps,
constructed of concrete or fiberglass with depths ranging from 6 to 30 feet.
When full, they transfer their contents, and are typically daisy chained
together to create a liquid highway through which stormwater can be transported
over miles. The final destination is normally a pond, reservoir, treatment
plant or the ocean. There are three main application segments in the lift
station market including industrial wastewater, municipal sewer and municipal
stormwater. Stormwater enters lift stations from the top and is removed from
the bottom using two or more transfer pumps. The pumps are typically submersed
within the sump or located next to the lift station in a pump house. Lift
stations are crowded, dynamic environments with ladders, pipes, pumps, rails,
electrical, sensors and water streams pouring in from one or more sources.
Stormwater can be dirty or oily with particulates, trash and debris, making it
difficult to measure reliably. The primary requirement for this application is
to monitor the liquid level, periodically transfer the stormwater from the lift
station to another location, and prevent it from overflowing or running dry. |
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Life
science exhibits house living aquatic species for public viewing at aquariums,
marine parks, zoos and hotels. Regardless of the animal type, the provision and
maintenance of clean water is a critical requirement. Within the life science
market, there are three main application segments including the pre-treatment
of water prior to being introduced to the exhibit, the monitoring of the
exhibit itself, and the post-treatment of wastewater after its been removed
from the exhibit. Exhibit tanks range widely in depth and capacity based upon
the species, their requirements and the scenery such as rocks, plants, water
features and backdrops. The support equipment is typically located behind the
exhibit or hidden within the scenery. To maintain water quality and make up for
evaporation, water is continuously circulated in and out of the exhibit. The
post-treatment system receives wastewater from the exhibit, treats it to
specification, removing physical or biological contaminants, and either
recirculates it back into the exhibit or releases it to the municipal sewer or
environment. A post-treatment system typically includes a storage tank to
collect the wastewater, a neutralization tank to treat the wastewater and
chemical feed tanks to supply the neutralization process. The storage tank can
be above ground or below grade with an open or enclosed top, and is normally
constructed of plastic, fiberglass or concrete. The neutralization tank is
typically a plastic or fiberglass tank with an open or enclosed top and mixer
for agitation. The chemical feed tanks are plastic day tanks, IBC totes or
drums with enclosed tops. The primary requirement for this application is to
monitor the liquid level in each tank, ensuring that the levels are maintained
within their operational ranges, and either refilling the day tank or notifying
the operator when additional chemical supply is needed prior to running out. |
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Life
science exhibits house living aquatic species for public viewing at aquariums,
marine parks, zoos and hotels. Regardless of the animal type, the provision and
maintenance of clean water is a critical requirement. Within the life science
market, there are three main application segments including the pre-treatment
of water prior to being introduced to the exhibit, the monitoring of the
exhibit itself, and the post-treatment of wastewater after its been removed
from the exhibit. Exhibit tanks range widely in depth and capacity based upon
the species, their requirements and the scenery such as rocks, plants, water
features and backdrops. The support equipment is typically located behind the exhibit
or hidden within the scenery. To maintain water quality and make up for
evaporation, water is continuously circulated in and out of the exhibit. The
pre-treatment system receives new water from a municipal or natural source such
as the ocean, or reclaimed water from the post-treatment system, and removes
any solids or impurities before introducing that water into the exhibit. A
pre-treatment system typically includes a filtration system with chemical feed
tanks, and storage tanks to hold the treated water. The storage tanks are
normally above ground plastic or fiberglass tanks with enclosed tops. The
chemical feed tanks are plastic day tanks, IBC totes or drums with enclosed
tops. The primary requirement for this application is to monitor the liquid level
in each tank, ensuring that the levels are maintained within their operational
ranges, and either refilling the day tank or notifying the operator when
additional chemical supply is needed prior to running out. |
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Life
science exhibits house living aquatic species for public viewing at aquariums,
marine parks, zoos and hotels. Regardless of the animal type, the provision and
maintenance of clean water is a critical requirement. Within the life science
market, there are three main application segments including the pre-treatment
of water prior to being introduced to the exhibit, the monitoring of the
exhibit itself, and the post-treatment of wastewater after its been removed
from the exhibit. Exhibit tanks range widely in depth and capacity based upon
the species, their environmental requirements and associated display scenery
such as rocks, plants, water features and backdrops. The support equipment is
typically located behind the exhibit or hidden within the scenery. To maintain
water quality and make up for evaporation, water is continuously circulated in
and out of the exhibit. The primary requirement for this application is to
monitor the liquid level, maintain it, and prevent it from rising or falling to
levels that would endanger the inhabitants. |
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Cooling
towers are heat exchange systems that bring air and water into direct contact
with each other in order to reduce the temperature of the water. To accomplish
this, water is continuously pumped to the top of the tower, where it cascades
over a series of baffles, mixes with air, and collects in either a basin
located directly under the tower or a sump next to the tower. As heat and water
escapes the tower through evaporation, additional water must be periodically
added to the system. Cooling towers come in a variety of sizes from roof top
systems to those the size of buildings or even larger. The typical water basin
is open to air, 4’ or less in depth, constructed of fiberglass, metal or
concrete, and large enough in capacity to hold all of the water in the system.
Cooling towers have two basic control systems, one to add liquid into the
basin, and one to turn the water recirculation system on or off. The primary
requirement for this application is to monitor the liquid level, automatically
refill the basin, and prevent the system from running dry. |
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Chemical
feed systems inject precise amounts of chemicals into processes to produce
water fit for a specific purpose, maintain process efficiency, protect
equipment and minimize costs. Chemical feed is separated into three main
application segments including cooling, boiler and water treatment. Each
requires a chemical feed system that basically includes a metering pump,
storage tank and level sensor. Chemical feed tanks are small and often stand
alone. They’re typically plastic mini-bulk tanks around 6’ in height, or IBC
totes between 3’-6’ in height, or drums or pails that are 3’ or less in height.
While purification requirements and processes differ in industrial, municipal
and commercial applications, chemical feed plays a common role in water
treatment. The primary requirement for this application is to monitor the
liquid level and notify the operator when additional chemical supply is needed
prior to running out, thus maintaining water integrity. Mini-bulk tanks are
typically refilled from tanker trucks, while IBC totes, drums or pails are
exchanged. |
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Chemical
feed systems inject precise amounts of chemicals into processes to maintain
efficiency, protect equipment and minimize costs. Chemical feed is separated into
three main application segments including cooling, boiler and water treatment.
Each requires a chemical feed system that basically includes a metering pump,
storage tank and level sensor. Chemical feed tanks are small and often stand
alone. They’re typically plastic mini-bulk tanks around 6’ in height, or IBC
totes between 3’-6’ in height, or drums or pails that are 3’ or less in height.
Boilers generate and maintain heated water or steam for use in facility
processes. City water contains impurities such as phosphates, chelants and
polymers that are treated with chemicals at the boiler. The primary requirement
for this application is to monitor the liquid level and notify the operator
when additional chemical supply is needed prior to running out, thus maintaining
the integrity of the boiler. Mini-bulk tanks are typically refilled from tanker
trucks, while IBC totes, drums or pails are exchanged. |
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Above
ground bulk storage tanks are containers that hold large volumes of liquid and
typically range from 10 to 32 feet in height. They operate under no pressure,
are available in many shapes, and are widely manufactured out of plastic,
fiberglass or metal. Vertical cylindrical tanks are the most common. Depending
upon the liquid, they may also have a chemically resistant inner lining. There
are many environmental regulations associated with the design and operation of
bulk storage tanks, and above ground tanks have different regulations than
below ground tanks. Bulk storage tanks have two basic control systems, one to
add liquid into the tank and one to remove liquid from the tank. Some also have
secondary containment walls to prevent spills or leakage, and all have good
transportation access to support deliveries. The primary requirement for this
application is to monitor the liquid level, enabling operators to know when
it’s time to refill the tank, and prevent it from overflowing or running dry. |
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When a Colorado municipality needed reliable level measurement of their polymer feed tanks, they turned to Flowline. Organic flocculants are widely used in water treatment for clarification. Their polymer chains attract suspended solids to form flocs that precipitate during settling, thus leaving clear water behind. Polymer is very sticky and the operators had problems with previous conductance level sensors that required ongoing maintenance due to coating build-up. For this reason, Flowline suggested the use of our non-contact, ultrasonic liquid level sensors that are unaffected by sticky liquids. The ultrasonic sensor provides reliable level data to the SCADA, which in turn, monitors the polymer feed tanks. Flowline is reliable level measurement. |