pumps
Transport
saline water
safely
Jung Pumpen “U 3 K(S)
special” submersible
pump now available for
softening plants.
written by andreas kämpf
Overhaul Biesbosch pumps
for Evides Waterbedrijf
written by inge sluijter
Recently, Pentair Nijhuis overhauled the exchangeable pump set of Evides Waterbedrijf, a
water company in the Netherlands. These pumps are used by Evides to move untreated
surface water from the Meuse River to reservoirs in the Biesbosch. Evides supplies citizens
of southwestern Netherlands with drinking water and large industrial companies with
industrial water. In addition, Evides is active in wastewater treatment.
The pumps are in constant operation and thus need to
be overhauled every five to six years. Since it is crucial
to maintain the buffer store level in the reservoirs to
ensure uninterrupted drinking water production, the
pumps cannot be shut down for extended periods.
Therefore, Evides Waterbedrijf has an exchangeable
pump set that acts as a back-up to the active pumps.
The Services department of Pentair Nijhuis overhauled
the exchangeable pump set, removed the active pumps
from the cellar in situ, and installed the overhauled
pumps. It concerned two large pumps, 18.7 feet (5.7
meters) long and 6 feet (1.85 meters) in diameter with
a capacity of 1056 gallons per second (4 m3/s) each. The
pumps were serviced at Nijhuis Services in Beverwijk,
the Netherlands. In addition, several technical improvements were made to the pumps. The project
was completed with minimal pump downtime, ensuring Evides could maintain a continuous water supply to
its customers.
14
knowhow 2011
The Biesbosch has developed into a wetland
where large groups of water birds find food,
shelter and nesting places. Three reservoirs in
the Biesbosch, ‘De Gijster’, ‘Honderd en Dertig’
and the ‘Petrusplaat’, store surface water from
the Meuse River. The water in these reservoirs
undergoes a “natural” flushing process for several months, before it is pumped to various
water treatment areas.
Submersible pumps from Pentair’s Jung
Pumpen U 3 series have been recognized
for decades for their reliability to transport a variety of wastewater. In 2009,
Pentair Jung Pumpen launched the “U 3
special”, which provided additional
resistance to aggressive substances such
as silage juice, liquid fertilizer, and slightly acidic condensate, as well as more
abrasive substances, such as drainage
water. By using especially high-quality
materials, the manufacturer has extended the pump’s range of applications
again. The new “U 3 K(S) special” can
now safely transport saline water from,
for example, softening plants.
* Watch the YouTube-movie of
this foam flammability test.
Go to YouTube.com and search for
“Schuimtest Versteijnen Logistics”.
Fig. 1: The motor casing’s high-quality alloy enables the
“U 3 K(S) special” to transport more aggressive substances,
for example, from condensate- or softening plants.
Softening plants have become more popular in
recent years as they prevent washing machines,
faucets, and other household appliances from calcifying. During the water softening process, the plants
accumulate salt brine, which – depending on the
softening plant’s installation site – must be removed
with pumps. The high levels of salt in the water,
however, may cause pitting corrosion on the pump
components.
Chloride ions, contained in salt water, trigger this
pitting corrosion. The new “U 3 K(S) special” from
Jung Pumpen offers an optimal solution for softening
plants. Alloying their motor casing with high-quality
stainless steel ensures the safe transport of salt
water solutions. The new “U 3 K(S) special” is also
portable and can be used as a bilge pump in seawater or brackish water - on boats, for example.
Fig. 2: The new “U 3 K(S)
special” can now safely
transport saline water from,
for example, softening
plants. The water is collected
in a sturdy container and
subsequently discharged
over the flood level into the
sewers.
Pentair Nijhuis pump units
used in expansion foam system
New hazardous substance warehouse well protected against fire.
written by inge sluijter
An impressive foam flammability test was performed at Versteijnen Logistics’ new hazardous substances warehouse in Tilburg, the Netherlands. The test of the sprinkler and high
expansion foam protection system proved that the warehouse is well equipped to fight
potential fires. Nijhuis Pompen BV, part of Pentair, supplied and installed the firefighting
pump unit to feed the sprinkler system with extinguishing water.
“We are a service provider that focuses on thoughtout solutions for transporting and warehousing,” said
Jorn Versteijnen, manager of Versteijnen Logistics.
“Transporting hazardous substances (ADR goods)
requires special attention, which is why we have specialized in this field. We handle these hazardous substances with the utmost care for safety and expertise.
This also includes safe storage.”
On July 8, 2011, Versteijnen Logistics introduced its
new ADR warehouse with an impressive foam flammability test. Niels van den Hurk, Area Sales Manager
at Pentair Nijhuis witnessed this test. “For this foam
flammability test, the pump unit we installed was
used.” he said. “A foam concentrate was added to
the water, which enhances the extinguishing capacity for flammable substances. The test showed how
the warehouse, with a volume of almost 813,000
cubic feet (23,000 m3), was filled with foam to the
roof in just a few minutes.* We can confidently say
that Versteijnen Logistics is well-prepared for fire
emergencies at this warehouse, and that environmental and other damages will be kept to a minimum
in the event of a fire.”
knowhow 2011
15