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Without effective cooling water treatment, a cooling water system can suffer from scale formation, corrosion and fouling and may become a breeding ground for harmful bacteria such as those which cause Legionnaires’ disease, which reduces efficiency, shortens plant life and makes your operation unreliable and unsafe. Poor control can not only put your cooling process at risk, but can also incur huge cost in wasted energy, chemicals and water charges. To overcome the water problems, YunRui provides a comprehensive range of cooling water treatment products and consultancy services to keep your system operating safely and efficiently.

Problems in Cooling Water:

Corrosion, Scaling, Bio-fouling and Algae are four main problems in cooling and circulating water system, which may result in health hazards, increase in water & electricity consumption, reduction in cooling efficiency and use-life of the equipment.

YunRui electrochemical descaling equipment is patented system that prevents scaling, bio-fouling, micro-organism growth; inhibits corrosion, and produces oxidation in the water and prevents bacteria like Legionella. It deals problems associated with the cooling water system in a unique electrochechemical process, which is more active, cost effective, and with no harmful chemicals.

How YunRui electrochemical descaling equipment works:

The equipment is connected to the cooling system/tower externally, so no intervention to the system, which significantly reduces costs and time for the installation.

DC current passes from the cathode, through the electrolyte water in reaction tank, to the anodes and produces OH ions, which cause a PH rise near the cathode and also cause scale to accumulate on the mesh. The accumulated scales can be removed periodically in physical way, and no chemicals involved. It also produces corrosion preventing copper and irons, which creates the environment that prevents the development of harmful micro-organism.

OH ions that remain near the anode cause a decrease of PH valve and produces oxidants which disinfect and sterilize the water.

Based on electrochemical principle, an anodic oxidation reaction zone and a cathodic reduction reaction zone are created separately in electrolysis reaction chambers. Scales will be deposited on the surface of the cathode; sterilization fungicide like free chlorine and ozone are generated in the anode area without any chemicals, to prevent biological contamination, kill Legionella, and pipeline corrosion mitigation.

Chemical Reaction on Cathode:

A high concentration of Hydroxide is formed at the cathode: 2H2O + 2e --> H2 + 2OH-

The elevated pH ebvironment(pH about 13), is easy for the mineral pre-scaling, which will remove calcium and magnesium ions, OH-, CO22- and Ca2+ to form Ca(OH)2 (Scale), CaCO3 (Scale).

Chemical Reaction on Anode:

In the anode area, the chlorine ions will be converted into free chlorine, while ozone is generated: O2 + 2HO- -2e à O3, to achieve the sterilization effect.


1.     Anti-fouling & Descaling

Calcium and magnesium ions are adsorbed, and are visible to the naked eye, which dramatically reducing the risk of fouling in heat exchanger. By take taking the mesh out, the scales adsorbed and rust will be removed from the water, without drainage. So that the heat exchange surface is always at perfect state, which will improve heat exchange efficiency.

2.     Rust-removal & Corrosion Mitigation

Electrolysis reaction chamber is connected with the pipe, play the role of cathodic protection, which solve the water problem of red rust, thus extend use-life of pipes and heat exchangers.

3.     Sterilization

A large number of O3、OH-、O-2、H2O2、O2 are released while functioning, which has a strong bactericidal effect. Together with the patented copper & silver ion collector, 99.8% of the bacteria and algae in water will be removed, including Legionella. Comprehensive prevention and control of biological pollution, protecting human health, improving safety performance, improve the cooling efficiency.

4. Algae Eliminating

A number of copper and silver ions will be released from the internal generator, which is made from certain alloys. The algae in water will be removed.

Maintenance and control of the system is performed on site with constant access to all figures and para-maters relating to water quality and system performance online. Be it any question or confusion, our technical team is always available to support online and offline.