Cooling Water Treatment Solutions

As one of the leading industrial water treatment companies in South Africa, we develop solutions for every cooling water system.

When you work with us, you benefit from: advanced monitoring, specialised water treatment chemicals, ongoing technical support and proven water quality management. The result? Cooling water treatment that works for you and your business.

Protect critical assets, improve system performance and extend equipment lifespan.

Why is it important? Our clients maximise the lifespan of valuable equipment while improving operational efficiencies and reducing maintenance spend.

What Is Cooling Water Treatment?

Cooling water treatment is the process of managing and maintaining water quality within cooling towers, closed-loop systems, condensers and associated equipment. The objective is to prevent problems such as scaling, corrosion, fouling and biological contamination.

An effective water treatment process typically includes:

Scale prevention and control
Corrosion management

Microbiological control
Water quality monitoring

Chemical dosing and optimisation
System inspections and performance evaluations

Our Cooling Water Treatment Solutions

Protect against Scaling:
Scaling in Cooling Water Circuits is mainly caused by super saturation of scaling salts in the water. This can be caused by a number of variables, two of which are heat (heat exchanger) and evaporation/concentration of scaling salts (Open Recirculation Cooling Tower). Scaling in these two critical pieces of equipment can lead to major problems with your plant operation, resulting in increased energy costs, maintenance costs, emergency shutdowns and possible equipment failure.
G-CHEM’s 2000 Series deposition control products, use the latest PolySPERSE Technology in order to help maximize heat exchanger capacity/efficiency, resulting in optimum plant utilization.

Protection against Fouling:
Fouling is caused by the settling of insoluble solids i.e. dust, silt etc., in mainly low flow areas of cooling water circuits. This can result in reduced flowrates, heat exchange, under deposit corrosion which can lead to eventual equipment failure/lost production.
G CHEM uses two main methods of protecting your system against fouling – mechanical (filtration etc) and chemical, using our latest D-SPERSE Technology.

Inhibiting Corrosion:
Corrosion is, simply put, the irreversible conversion of metals to their natural state. Metal surfaces are irreversibly damaged and cannot be returned to their normal state. It can lead to catastrophic failure of equipment resulting in plant downtime.
Cooling water circuits offer the ideal environment for corrosion to take place. G-CHEM’s 3000 Series corrosion inhibition programs offer system protection over a broad pH range, ensuring optimum results even under the most harsh conditions.

Inhibit biofouling and microbiologically-induced corrosion (MIC):
Cooling Water systems are ideal environments for microbiological activity including both planktonic and sessile growth. Without a microbiological control program, this growth can result in major health hazards, corrosion, fouling and other efficiency issues that can cause equipment failure, unscheduled downtime, reduced heat transfer, lost production, and increased risk of Legionella.
G CHEM offers a broad RANGE of oxidizing and non-oxidizing biocides as well as biodispersants to treat and protect cooling systems from a variety of micro-organisms and microbiological growth.

Cooling Water Treatment Products

G-Chem Aquacare supplies a comprehensive range of cooling water treatment products designed to control corrosion, scale formation, fouling and microbiological growth in cooling towers and closed-loop systems. Our specialised treatment programmes:

Improve system efficiency
Protect critical equipment
Extend asset life

Discover more about our specialised cooling water treatment products below.

G-CHEM 1000 Series:

Cooling Water Treatment Biocide Programs

– Oxidizing Biocides
– Non-Oxidizing Biocides

Key Information: A range of oxidising and non-oxidising biocides formulated to control bacteria, algae and other microorganisms in cooling water systems. These products help maintain system hygiene, reduce fouling and support efficient cooling performance.

G-CHEM 2000 Series:

Cooling Tower Programs for Highly Scaling Waters:

– All Organic Scale & Corrosion Inhibitors

Key Information: All-organic scale and corrosion inhibitors designed for cooling systems operating with highly scaling water conditions. These products help prevent mineral deposits, improve heat transfer efficiency and protect system components.

G-CHEM 3000 Series:

Cooling Tower Programs for Corrosive Waters

Inorganic Corrosion Inhibitors
– Zinc Based
– Molybdate Based
– Phosphate Based
– Blends

Key Information: A range of inorganic corrosion inhibitor programmes, including zinc-based, molybdate-based, phosphate-based and blended formulations. Designed to protect metal surfaces from corrosion and extend the operational life of cooling water equipment.

G-CHEM 4000 SERIES:

Closedloop Water Treatment Programs

– Organic Based
– Inorganic Based
– Filming Amines
– Nitrite Based
– Molybdate Based
– Blends

Key Information: Specialised treatment programmes for closed-loop heating and cooling systems. Available in organic, inorganic, filming amine, nitrite, molybdate and blended formulations, these products help prevent corrosion, maintain water quality and optimise long-term system performance.

Cooling Water Treatment Biocide Programs

Our 1000 Series biocide programmes are designed to control bacteria, algae, fungi and other microorganisms in cooling water systems. Effective biological control helps prevent fouling, maintain heat transfer efficiency, reduce microbiologically influenced corrosion and support reliable system operation.

G-CHEM 1000 Series:

Oxidizing Biocides:
– Chlorine Based
– Bromine Based
– Chlorine Dioxide
– Peroxide
– Ozone

Key Information: Oxidizing biocides provide rapid and effective control of microbiological growth in cooling water systems. Available in chlorine-based, bromine-based, chlorine dioxide, peroxide and ozone formulations, these products help maintain system cleanliness and minimise biological fouling.

Non-Oxidizing Biocides:
– Isothiazolene Based
– Quaternary Amines
– Gluteraldehyde Based
– DBNPA Based
– Bronopol Based
– THPS Based
– Carbamate Based
– MBT Based
– Blends

Key Information: Non-oxidizing biocides are formulated to target specific microorganisms and provide longer-lasting biological control. Available in isothiazolone, quaternary amine, glutaraldehyde, DBNPA, bronopol, THPS, carbamate, MBT and blended formulations, they help control resistant organisms and support comprehensive cooling water treatment programmes.

Legionella Bacteris

Algae

Cooling Water Open Recirculating Programs

Our open recirculating cooling water programmes are designed to address the specific challenges associated with scaling and corrosive water conditions. These specialised treatment solutions help maintain system efficiency, protect valuable assets and extend equipment life in cooling tower applications.

G-CHEM 2000 Series:
Scaling Waters:
– All Organic AntiScalents
– All Organic Corrosion/Scale Inhibitors

Key Information: Formulated for cooling systems operating under highly scaling conditions, the G-CHEM 2000 Series helps prevent mineral deposits, maintain heat transfer efficiency and reduce maintenance requirements.

G-CHEM 3000 Series:
Corrosive Waters:
All Organic Based:
– Phosphonate Based
– Filming Amine

Inorganic Based:
– Zinc Based
– Molybdate Based
– Phosphate Based
– Blends

Key Information: The G-CHEM 3000 Series provides targeted corrosion protection for cooling systems exposed to aggressive water conditions. A range of organic and inorganic treatment options are available.

Closedloop Chemical Programs

Our closed-loop water treatment programmes are designed to protect heating and cooling systems from deterioration. These specialised formulations help maintain system efficiency, extend equipment life and reduce maintenance requirements in closed-loop applications.

G-CHEM 4000 Series:
All Organic:
– Phosphonate Based
– Filming Amines

Key Information: Organic treatment programmes provide effective corrosion protection while maintaining system cleanliness and stability. These solutions are well-suited to a wide range of closed-loop heating and cooling systems.

Inorganic:
– Nitrite Based
– Molybdate Based
– Organic/Inorganic Blends

Key Information: Inorganic treatment programmes offer robust corrosion protection for closed-loop systems operating under demanding conditions.

Partner With A Cooling Water Treatment Expert

G-Chem Aquacare combines decades of experience with advanced water treatment technology to deliver reliable and optimised cooling water treatment programmes. Whether you require ongoing monitoring, specialised water treatment chemicals, system optimisation or a complete industrial water treatment solution, our team is ready to assist.

G-Chem Aquacare provides industrial water treatment services to a wide range of industries throughout South Africa, including:

Our technical team understands the unique challenges faced by each sector and develops customised industrial water treatment solutions that deliver measurable results. Better yet, we’re able to help clients in all the major provinces of the country: namely, Limpopo, Mpumalanga, Gauteng, the North West, Free State, KwaZulu-Natal, Northern Cape, Eastern Cape and the Western Cape. We have offices in Cape Town, Johannesburg, Durban and Gqeberha, and manufacturing facilities in Cape Town and Johannesburg.

You can contact G-Chem Aquacare for cooling water treatment support, no matter where you are in South Africa.

Manufacturing facilities
Food and beverage processing plants

Mining operations
Power generation facilities

Commercial buildings
Chemical processing plants

Municipal infrastructure
Industrial processing facilities

You can contact G-Chem Aquacare for cooling water treatment support, no matter where you are in South Africa.

Speak to our Cooling Water Treatment Experts

Gauteng: dean.j@gchem.co.za
Free State: dean.j@gchem.co.za
Western Cape: aghmad.v@gchem.co.za

Kwa-Zulu Natal: simon.m@gchem.co.za
Eastern Cape: sive.m@gchem.co.za
Northern Cape, North West, Limpopo and Mpumalanga: shaun.g@gchem.co.za

Frequently Asked Questions

What is cooling water treatment?

Cooling water treatment is the process of maintaining water quality within cooling towers and cooling systems to prevent corrosion, scale formation, fouling and biological growth. Effective treatment improves efficiency and protects valuable equipment.

Why is corrosion control important in cooling water systems?

Corrosion can damage pipes, heat exchangers and other critical components. A professional corrosion management programme helps extend equipment lifespan, reduce maintenance costs and improve system reliability.

What chemicals are used in cooling water treatment?

Common cooling water treatment chemicals include corrosion inhibitors, scale inhibitors, dispersants, biocides and pH control products. The exact treatment programme depends on system design and operating conditions.

How often should cooling water systems be monitored?

Regular monitoring is essential for effective water quality management. Most systems require routine testing and inspections to ensure water chemistry remains within recommended parameters and treatment programmes continue to perform effectively.

Why choose G-Chem Aquacare for cooling water treatment?

G-Chem Aquacare prides itself in our HVAC and Cooling-dedicated divisions, which provides customised industrial water treatment services, specialised water treatment chemicals, ongoing technical support and advanced monitoring programmes, specifically dedicated to and in the cooling water treatment space. Our solutions are designed to improve efficiency, reduce costs and protect critical cooling system infrastructure.