Large industrial cooling units stand against a clear blue sky, showcasing advanced technology in industrial water treatment.

Cooling Water Treatment for Industry

Water Treatment
Cooling Water

In power stations, industry and commerce, waste heat has to be dissipated, i.e. a cooling circuit is required. The most commonly used coolant is water. The cooling circuit can be open, closed or be designed as a hybrid solution. Open cooling circuits are the most widespread.

In an open cooling water treatment system, chemically pure water is extracted from the circuit by evaporation and dissolved salts as well as other contaminants are left behind. This process is called cycles of concentration.

In order to run the cooling circuit at a target cycles of concentration, a portion of the cooling water is discarded at regular intervals (blowdown). These losses must be compensated for with treated make-up water.

Cooling Water Circuit
Industry

Suitable cooling water treatment is indispensable when it comes to operating cooling systems with the highest possible cycles of concentration and thus low water consumption. In addition, the 42nd German Federal Immission Control Act (BImSchV) requires monitoring of the cooling water in order to prevent microbial contamination.

We offer all the required technology for cooling tower applications – from treating make-up water with softening units and reverse osmosis or nanofiltration for higher cycles of concentration to our specially developed dilution control system, Cooltrol data, which features an extensive range of functions and documentation of the operating data.

References
Water treatment cooling water - Made in Germany

A turquoise world map highlights Herco's global reach in industrial water treatment and reverse osmosis systems.

Nanofiltration Unit NF-S7 20000 AS/FU/SO
Cooling tower feed at an automotive manufacturer in Germany

Filtration Unit Oxidator / HEF + HSF / DEFU
Cooling tower water for a chemical industry in Bosnia and Herzegovina

Reverse Osmosis Unit UO-S7 18000 AS/FU/SO
Cooling tower water for a pharmaceutical industry in Germany

Reference project cooling water
Reverse osmosis system with PLC

Special system for the treatment of hardness-stabilised raw water. For innovative and clearer operation, the reverse osmosis system is equipped with a memory-programmable control system. In addition, this control technology enabled the implementation of a BUS connection for data transfer to the BMS (BACnet in this case).

Customer

German specialist for waste oil disposal and regeneration

Application

Cooling water systems industry

System technology of the UO-S7 15000 AS FU

Reverse osmosis system with 15 m³/h capacity each
Raw water stabilisation through antiscalant dosing
Control system - S7-1200 incl. BACnet connection
High-pressure pump with integrated frequency converter

Energy saving

30% through FU pump

more about the UO-D 1.500

Questions and answers on the subject of cooling water treatment

Why is efficient cooling water treatment so important in industry?

In industrial processes, cooling water quality plays a decisive role in the operational safety and efficiency of the systems. Untreated water can cause corrosion, deposits or biological impurities that damage heat exchangers and pipework. Reliable cooling water treatment (industry) extends the service life of systems, reduces downtimes and lowers energy consumption.

What processes does Herco use for industrial cooling water treatment?

Herco relies on modular system solutions that are customised to the process and the water quality. Depending on the requirements, reverse osmosis, filtration, softening, dosing technology and desalination control are used. All components are tested in the company's own test centre and are designed for maximum operational reliability - from feed water treatment to circuit monitoring.

How does cooling water treatment in power plants differ from other applications?

In power plants, particularly high demands are placed on cooling water treatment (power station), as large volumes of water and high operating temperatures must be precisely controlled. Herco develops systems that reliably prevent corrosion, scale formation and microbiological growth. This increases the efficiency of the system and significantly reduces water consumption.

Can Herco also modernise existing cooling water treatment systems?

Yes, Herco offers both retrofit solutions and the complete integration of new components into existing systems. Our engineers analyse the existing system technology and develop a concept that sustainably improves efficiency, water consumption and operating costs.

What role does sustainability play in cooling water treatment?

Sustainability is a central component of Herco's corporate philosophy. Herco contributes to the conservation of resources through optimised process management, energy-saving technologies and durable components.

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