Cooling water treatment

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Cooling water Questionnaire Arrow right

Jurby WaterTech International offers time-proven JurbySoft® chemical products for chemical treatment of cooling water. JurbySoft® offers a full range of corrosion inhibitors, dispersants, advanced multifunctional scale, and corrosion inhibitors. The range of products also includes oxidising and non-oxidising biocides, biodispersants for biological bio-fouling control as well as cleaners for heat exchangers.

We provide chemical treatment for the following types of cooling systems:

  • open cooling systems;
  • closed cooling systems.

CORROSION AND SCALE INHIBITORS

Jurby WaterTech International provides robust JurbySoft® products for scale and corrosion control in cooling water systems. The products include single action scale or corrosion inhibitors as well as multifunctional. Main advantages of JurbySoft® corrosion and scale inhibitors:

  • Formulas tested in plants for over 30 years;
  • Heavy industry trusted performance for over 30 years;
  • Optimally sized product range for any case;
  • Products that tolerate significant changes in water quality;
  • Stable in extreme treatment conditions;
  • Strict quality policy.

JurbySoft® corrosion inhibitors would help companies to achieve excellent corrosion rate values for carbon steel and copper alloys:

RECIRCULATION COOLING WATER SYSTEM
Corrosion rate of copper alloys Description
mpy mm/year
OPEN < 0.1 < 0.025 Excellent
0.1 to 0.35 0.025 to 0.09 Good
0.35 to 1.0 0.09 to 0.25 Poor
> 1.0 > 0.25 Very poor
CLOSED < 0.1 < 0.025 Excellent
0.1 to 0.25 0.025 to 0.06 Good
0.25 to 0.5 0.06 to 0.125 Poor
> 0.5 > 0.125 Very poor
RECIRCULATION COOLING WATER SYSTEM
Corrosion rate of carbon steel Description
mpy mm/year
OPEN < 1 < 0.25 Excellent
1 to 5 0.25 to 1.25 Good
5 to 10 1.25 to 2.50 Poor
> 10 > 2.50 Very poor
CLOSED < 0.2 < 0.05 Excellent
0.2 to 0.5 0.05 to 0.125 Good
0.5 to 1.0 0.125 to 0.25 Poor
> 1.0 > 0.25 Very poor

 

JurbySoft® corrosion and scale inhibitors

Product name Description Application / advantages

Scale and corrosion inhibitors for open recirculating cooling systems
JurbySoft 2 Product for alkalinity and pH correction increases alkalinity and pH;
neutralises acid wastewater;
reduces corrosion-causing tendencies;
stabilises pH in circulating systems
JurbySoft 80 Zinc-based corrosion and scale inhibitor multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +3.0);
inhibits corrosion of various metals;
compatible with oxidising biocides
JurbySoft 80 plus Zinc-based corrosion and scale inhibitor with enhanced corrosion inhibition multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +3.0);
enhanced corrosion inhibition for various metals;
compatible with oxidising biocides
JurbySoft 80-5 Organic corrosion and scale inhibitor multifunctional;
highly effective scale inhibitor (Langelier index up to a value of +3.0);
compatible with oxidising biocides
JurbySoft 80-7 Zinc-based corrosion and scale inhibitor (with copper inhibitor) highly effective corrosion inhibitor;
protects against galvanic and pitting corrosion in mixed-metal systems
JurbySoft 82 Corrosion inhibitor for copper and copper alloys highly effective corrosion inhibitor for copper alloys;
protects against pitting and general corrosion;
JurbySoft 83 Corrosion and scale inhibitor based on organic and inorganic phosphates multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +2.5);
promotes the formation of a protective film;
compatible with non-oxidising biocides
JurbySoft 83-1 Corrosion and scale inhibitor based on stabilised phosphates for decarbonised water stable over a wide temperature range up to 80 ºC;
highly effective corrosion inhibitor for steel surfaces;
inhibits pitting and galvanic corrosion in systems made of various metals
JurbySoft 83b Corrosion and scale inhibitor based on organic and inorganic compounds with enhanced inhibition properties for steel corrosion multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +2.5);
promotes the formation of a protective film;
compatible with all biocides
JurbySoft 83c Corrosion and scale inhibitor based on organic and inorganic phosphates with enhanced inhibition properties for calcium scale multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +3.0);
inhibits corrosion process;
chlorination and bromination do not cause product decomposition
JurbySoft 83c plus Corrosion and scale inhibitor based on organic phosphates and dispersants multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +3.0);
inhibits corrosion process;
chlorination and bromination do not cause product decomposition
JurbySoft 88-5 Corrosion and scale inhibitor based on organic and inorganic phosphates multifunctional;
scale inhibitor for high water hardness (Langelier index up to a value of +3.0);
protects systems made of various metals against corrosion;
compatible with oxidising biocides
JurbySoft 89 Corrosion and scale inhibitor based on organic, inorganic phosphates and zinc multifunctional;
effective corrosion and scaling inhibitor;
inhibits both pitting and galvanic corrosion in systems containing steel and non-ferrous metals;
most effective at рН 7.5–8.5 and is resistant to temperature changes
JurbySoft 99 Organic scale inhibitor for hard water systems containing a high level of suspended solids completely organic product;
inhibits scale formation;
promotes the removal of existing scale;
chlorination and bromination do not cause product decomposition

Scale and corrosion inhibitors for closed cooling systems
JurbySoft 73 Nitrite-based corrosion inhibitor for closed cooling and heating systems in which demineralized water, soft water or antifreeze is circulating anodic inhibition of metal surfaces;
stable over a wide temperature range;
forms a firm protective film
JurbySoft 74 Nitrite-based corrosion inhibitor for closed cooling and heating systems in which municipal water or antifreeze

is circulating

 anodic inhibition of metal surfaces;
stable over a wide temperature range;
forms a firm protective film;
inhibits corrosion of copper and copper alloys
JurbySoft 527 Molybdate-based corrosion inhibitor for closed cooling and heating systems in which demineralized water or antifreeze is circulating excellent anodic inhibition of metal surfaces;
stable over a wide temperature range;
forms a firm protective film
JurbySoft 527-1 Molybdate-based corrosion inhibitor for closed cooling and heating systems in which municipal water or antifreeze is circulating excellent anodic inhibition of metal surfaces;
stable over a wide temperature range;
forms a firm protective film;
inhibits corrosion of copper and copper alloys
JurbySoft 527-2 Corrosion inhibitor with reduced molybdate content for closed cooling and low-pressure heating systems filled with demineralized, soft, or hard water multifunctional;
excellent anodic and cathodic inhibition of metal surfaces;
stable over a wide temperature range;
forms a firm protective film;
inhibits corrosion of various types of metal, including carbon steel, aluminium, copper, and copper alloys

 

BIO-FOULING CONTROL

Jurby WaterTech International offers a wide range of biocides and dispersants for cooling water treatment systems. Our line of products for bio-fouling control consists of oxidising and non-oxidising biocides that control the growth of bacteria, algae and, fungi, as well as the formation of biological slime and biofilms in water systems.

Main advantages of JurbySoft® bio-fouling control products:

  • a broad spectrum of effectiveness against microorganisms;
  • effective at very low concentrations and a broad range of pH conditions;
  • non-corrosive and do not increase salinity;
  • liquid products that can be easily used;
  • non-foaming as well as foaming formulation for enhanced bio-fouling control;
  • compatible with most corrosion and scale inhibitors;
  • biodegradable.

JurbySoft® bio-fouling control products

Product name Description Application / advantages
JurbySoft AC Activator of sodium hypochlorite enhances the action of hypochlorite due to the formation of
hypobromous acid;
cost-effective;
more effective than chlorine when water pH is high;
less aggressive (corrosive) than chlorine
JurbySoft 61 Oxidising microbiocide based on stable sodium hypochlorite broad-spectrum biocide;
cost-effective;
non-foaming;
compatible with chemicals resistant to oxidising agents;
short period of biological decay
JurbySoft 61 plus Detergent for production of chlorine dioxide – biocide used only in combination with JurbySoft® DS1 plus;
is one of raw material for production of chlorine dioxide;
chlorine dioxide can be used as oxidizer or disinfectant;
chlorine dioxide is a very strong oxidizer;
chlorine dioxide also prevents and removes biofilm;
chlorine dioxide can be used for drinking water treatment
JurbySoft DS1 plus Acid detergent for production of chlorine dioxide – biocide used only in combination with JurbySoft® 61 plus;
is one of raw material for production of chlorine dioxide;
chlorine dioxide can be used as oxidizer or disinfectant;
chlorine dioxide is a very strong oxidizer;
chlorine dioxide also prevents and removes biofilm;
chlorine dioxide can be used for drinking water treatment
JurbySoft 62 Algicide effective algicidal effect;
prevents the growth of algae and effectively removes existing algae;
effective over a broad range of pH and temperatures;
non-volatile, and does not cause foam
JurbySoft 63 Non-oxidising microbiocide based on quaternary amines broad-spectrum biocide;
has cleaning properties;
compatible with other cooling water treatment chemicals;
has the properties of a corrosion inhibitor;
effective over a wide pH range
JurbySoft 64 Liquid non-oxidising microbiocide based on glutaraldehyde broad spectrum of biocidal activity;
effective against anaerobic sulphate-reducing bacteria;
fast biocidal action;
effective at low concentrations and a broad range of pH values;
JurbySoft 67 Non-oxidising microbiocide based on isothiazolinones broad-spectrum biocide; non-foaming,
effective control against anaerobic sulphate-reducing bacteria;
compatible with other cooling water treatment chemicals;
effective over a wide pH range
JurbySoft 68 Non-oxidising microbiocide based on isothiazolinones broad-spectrum bactericide activity;
prolonged action biocide;
non-volatile and non-foaming;
effective control against anaerobic sulphate-reducing bacteria;
compatible with other cooling water treatment chemicals;
effective over a wide pH range;
non-reactive with metals, rubber and other materials
JurbySoft DB Biocide based on an organic stabilised bromine compound broad-spectrum biocide;
destroys and removes biofilms;
compatible with other cooling water treatment chemicals;
effective over a wide pH range;
short period of biological decay
JurbySoft 95 Inhibitor of biological fouling, biodispersant destroys and removes biofilms, acts as biocides and enhances effective action of other biocides;
effective over a wide pH range;
ensures clean surfaces;
short period of biological decay
JurbySoft 95 plus Inhibitor of biological fouling, biodispersant destroys and removes biofilms, enhances effective action of
biocides;
effective over a wide pH range;
ensures clean surfaces;
short period of biological decay

 

DOSING AND MONITORING EQUIPMENT

Jurby WaterTech International offers a cost-effective and reliable dosing and monitoring solution AquaDos for the control of chemical water treatment in cooling towers. AquaDos dosing station allows JurbySoft® products to be applied in constant and precise operational doses leading to convenient operation of cooling tower and the efficiency of the reagent treatment programme. Application of AquaDos dosing station results in control of corrosion, scaling, bio-fouling, and microbiological contamination.

In addition, Jurby WaterTech International experts will recommend a wide range of digital dosing pumps, corrosion racks, controllers, and probes that are suitable for JurbySoft® products metering and control of water parameters.

According to your request, Jurby WaterTech specialists will recommend a custom-designed dosing station for you. Contact us

 

Used in the following case studies

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