Closed circuit treatment

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Closed Loop  Closed Circuit Heating  Cooling
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Water Treatment Services is a leading independent
UK water treatment company offering a full range
of expert services for the management of closed
systems, closed loop heating, cooling and closed
circuit chilled water systems. Our closed loop
water treatment solutions address the problems of
corrosion, fouling, biofouling and scaling that
affect the reliability and performance of closed
circuit and closed loop water systems. Our
specialist services for closed circuit water
systems are delivered by in-field experts who
combine the latest high performance closed loop
water treatment techniques to help reduce costs,
save energy, enhance operational efficiency and
reliability, and extend asset lifecycles.
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Expert closed system closed loop water
treatment solutions Our specialist closed loop
and closed circuit water treatment solutions
include CLOSED LOOP WATER TREATMENT
SERVICING In-field closed circuit and closed loop
water treatment, engineering support and
maintenance services to control corrosion,
fouling, microbial fouling and scaling. MONITORIN
G VALIDATION Latest water analysis equipment to
monitor and validate closed circuit water
treatment programme performance. ENERGY
EFFICIENCY Expert investigation and analysis to
identify process improvement and energy
efficiencies involving heating, cooling and
chilled water systems, and heat transfer
processes energy efficiency ?
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Full national UK coverage With offices in London
serving the South and South East England,
Manchester (North West), Birmingham (Midlands),
Bristol (South East England and Wales), Leeds
(North and North East) and Glasgow (Scotland),
supported by regional teams of specially trained
engineers, in-field water treatment specialists
and technical experts Water Treatment Services
can offer professional, cost effective solutions
for the treatment of closed circuit heating,
cooling and closed loop chilled water systems
throughout the UK and Ireland. Contact us today
to learn how our expert water treatment and
closed circuit engineering support solutions can
help you to save energy, reduce downtime,
optimise costs and operational efficiencies, and
increase asset reliability. To speak with one of
our water treatment experts call us on 0330 223
31 31 or simply use the button below to get our
full contact details or submit our contact
form. Contact Us Today
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What are closed system water circuits? Closed
systems, closed circuits or closed loop water
systems are used in many commercial, industrial
and process environments where they provide
heating or cooling to work spaces, other internal
environments, and manufacturing and industrial
processes. Closed circuits operate as a closed
loop or closed system meaning that they are
effectively sealed and the water inside the
system is not exposed to the atmosphere. This
means that a closed loop system contains a fixed
volume of water that recirculates and tends to
suffer only negligible water losses.
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Problems affecting closed loop systems If closed
loop systems or the water used within them are
poorly maintained or left untreated it can lead
to problems that will affect energy usage, cost,
asset performance and reliability. Specifically,
these problems include corrosion, fouling,
biofouling and scaling to a lesser extent unless
there is significant water loss requiring
additional make-up water.

• CORROSION
• FOULING
• BIOFOULING
• SCALING

To combat such problems closed loop systems and
the water used within them require suitable
treatment.
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Successful closed circuit water treatment The
successful management of closed loop systems
requires a holistic approach to the maintenance
and protection of both the system, its components
and the water used in them against the
detrimental effects of corrosion,
fouling, biofouling and scaling. A well-managed
waster system has significant benefits and will
help save energy, reduce downtime, optimise costs
and operational efficiencies, and increase asset
reliability. Water Treatment Services holistic
approach to the successful management of closed
loop water systems involves control of the
following issues CORROSION CONTROL Appropriate
control measures to minimise system
corrosion. CONTROL OF FOULING Controlling system
fouling to reduce blockages, maintain energy
transfer efficiencies, and flow
rates. CONTROLLING BIOFOULING Controlling
biofouling from microbial slimes, pseudomonas
bacteria, nitrifying and sulphate reducing
bacteria. SCALE CONTROL Scaling in closed
circuits is generally less of an issue but can be
problematic where significant make-up volumes are
required.
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Inhibiting corrosion in closed loop water
systems Corrosion can affect closed loop
heating, cooling and chilled water systems even
though oxygen levels tend to be lower in such
fixed volume water systems. However, it is more
common in heating systems where higher,
fluctuating temperatures can increase rates of
corrosion. Corrosion control is important as if
left unchecked it can lead to the degradation of
metallic components and increased fouling from
corrosion by-products. This can lower flow rates,
cause blockages, and reduce reliability and
life-expectancy. It can also lower heat transfer
efficiencies which increases energy costs. A
thorough understanding of system metallurgy is
essential in the development of an effective
corrosion control programme. Several different
metals are commonly used in closed loop systems
and care needs to be taken that any chemical
water treatment products selected are compatible.
This is especially true for systems that contain
aluminium. Chemical corrosion control can be
achieved by incorporating specialist closed loop
water treatment technologies including high
performance corrosion inhibitors and oxygen
scavengers in to the water treatment programme.
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Controlling fouling microbial slimes in closed
circuits Closed circuit water systems can
become fouled from sources including suspended
solids, corrosion by-products, scaling and the
build-up of microbial slimes from pseudomonas
bacteria, nitrifying and sulphate reducing
bacteria. The accumulation of such fouling in
the form of sludge and suspended solids can cause
blockages, reduce heat transfer efficiencies, and
constrict flow rates. It can also cause localised
corrosion and bioaccumulation. Pseudomonas
bacteria can cause significant microbial fouling
issues in closed cooling and chilled water
systems. As Pseudomonas bacteria proliferates
throughout such closed circuit systems thick
microbial slimes can build-up to contaminate the
water, reduce cooling efficiencies and increase
operating costs. Successful treatment of closed
loop water systems that operate below
temperatures of around 80oC should incorporate a
broad spectrum biocide to control the growth and
build-up of bacteria and microbial slimes within
the closed system.
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Controlling scale formation The formation
of scale (sometimes called limescale) in closed
circuits and closed loop systems tends to be less
of an issue because of the fixed volumes of water
involved. However, if there are regular water
losses that require significant make-up volumes
then treatment for scale formation may be
required. This is usually more of an issue with
heating systems, especially those using hard
water, as the increased system temperatures make
the hardness salts more insoluble. The build-up
of scale on internal surfaces can cause
blockages, reduce heat transfer efficiencies, and
constrict flow rates. Closed systems water
treatment training The industrial and process
water treatment specialists at Water Treatment
Services have developed an extensive series of
professional water and wastewater treatment
training courses that includes WTS 0060 Water
Treatment for Closed System Heating Cooling
Water Circuits. This specialist training for
closed systems comprises an intensive one day
course designed for facilities managers, water
treatment service engineers,  maintenance and
engineering contractors, plant operators, and
those with responsibility for the installation,
pre-commissioning, maintenance and on-going
management of commercial and industrial closed
water systems used in heating, chilled and
cooling water installations water treatment
training ?
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Expert closed loop water treatment
solutions Contact Water Treatment Services today
to discuss your closed loop water treatment
requirements. We can provide expert advice and
engineering support regarding the management and
water treatment of closed loop heating, cooling
and closed circuit chilled water systems to help
reduce costs, save energy, enhance operational
efficiency and reliability, and extend asset
lifecycles. With offices in London serving the
South and South East England, Manchester (North
West), Birmingham (Midlands), Bristol (South East
England and Wales), Leeds (North and North East)
and Glasgow (Scotland), supported by regional
teams of specially trained engineers, in-field
water management specialists and technical
experts we can offer professional, cost effective
water treatment and engineering services across
the whole of the UK and Ireland. Contact us today
for more information or for your FREE, no
obligation quote. Contact Us Today
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loop-water-systems-2/