Choosing the Right Water Treatment filters for Cooling Towers

Cooling towers are the backbone of water-cooled systems, which are crucial in lowering the cooling system's water temperature. This is achieved by bringing in outside air and water inside the tower, where some water is evaporated, reducing the temperature of the residual water that is recirculated inside the system. 

A secondary function of a cooling tower is to act as an air scrubber, cleaning the air inside the tower, which typically contains airborne contaminants. Airborne contaminants such as dust, sand, and pollen are removed from the air and mixed into the tower's water supply. 

These contaminants get trapped in the water flow of towers and cause under-deposit corrosion, biological growth, scale, fouling, and a decrease in system efficiency.

This blog post summarizes what should be considered when selecting a filtration system for your cooling tower filtration requirements.

Industrial manufacturing facilities typically require cooling equipment to cool down chillers, heat exchangers, products, and other devices, and this equipment must be protected from contamination found in the cooling water.

Furthermore, environmental regulations for protecting water sources require manufacturers to return the used cooling water to its source in a non-polluting state.

Cooling tower filtration systems are crucial for safeguarding equipment and following these regulations.

The enefits of cooling tower filtration:

→ Improving heat transfer rates in water cooling systems for a longer period.

→ Reduced water consumption

→ Improved chemical effectiveness

→ Reduced chemical consumption

→ Reduced maintenance and energy costs.

→ Increased equipment lifetime

Filtration plays a crucial role in protecting cooling towers and is divided into three categories: side-stream water filtration, full-stream water filtration, and make-up water filtration.

Cooling Water Filtration Technologies:

Deciding which filtration technology is right for your system is crucial. It 's crucial to understand the general application requirements, including filtration degrees, as well as evaluating the advantages and disadvantages and costs of each technology.

1. Centrifugal Separators

Centrifugal separators, also known as hydrocyclones, use centrifugal forces to separate solids larger than 70 microns from water using centrifugal forces. They are frequently used together with a filtration system that can remove finer particles, but centrifugal separators do not remove organic particles.

2. Traditional Sand Filters

Sand/media filters circulate the cooling water to the media bed. There are various types of filter beds, such as sand, crushed glass, basalt, and more. As the water flows through the bed, the particles are trapped, and the filtered water is then discharged through the outlet.

3. Automatic Screen Filters-wedge wire screen

Automatic screen filters use multiple screens to trap suspended solids in the cooling water as it passes through them. Filtered water flows through the filter outlet. The gradual dirt buildup (cake) on the inner screen’s surface begins the cleaning process.

4. Disc Filters.

Disc filters consist of a series of flat grooved discs stacked together under pressure. As unfiltered water flows through the discs, it traps the particles. As more particles are trapped, the filters pressure differential increases, beginning the cleaning.

5. Cartridges & Bag Filters

Cartridge and bag filters are flexible solutions for side-stream filtration. However, they are consumable and require manual replacement. This should be taken into account as the disposable nature of these filters will increase expenses over time.

Selecting the Right Cooling Tower Filtration System

Here are some considerations to take into account when choosing the best type of water cooling filtration system for your needs and performance:

Location: Where in the cooling process will the filtration system be installed?

Footprint: Are there any limitations on the installation space?

Flow rate: What is the flow rate of the system? Is the preferred pressure variable or steady?

Particle characteristics: What is the micron size of the particles that need to be filtered for the filtration degree?

Particle characteristics include Sand, algae, etc.

Costs (purchase, maintenance, operations, backwash, energy): This will aid in the decision-making process.

Cooling towers require water treatment to ensure a safe, reliable, and efficient system. YUBO provides cooling tower water treatment filtration solutions for industries such as hospitality, industrial and infrastructure.

Our filtration solutions do much more than just prevent corrosion, deposits, and microbiological growth in your cooling tower water systems. Our self cleaning filter housings and wedge wire screen strainers maximize the life of your cooling water system, while keeping energy, water and maintenance costs as low as possible.