What chemicals are used in cooling tower water treatment?
What are the Chemicals used in Cooling Tower Water Treatment?
- Corrosion and Scale Inhibitors.
- Algaecides and Biocides.
- pH Adjusters.
How do you treat water in a cooling tower?
How Does A Cooling Tower Water Treatment System Work?
- Filtration & Ultrafiltration. Filtration systems are some most common water treatment options for cooling towers.
- Makeup Water Intake.
- Ion Exchange & Water Softening.
- Addition Of Chemicals.
- Side-Stream Filtration.
- Blowdown Treatment.
- Cooling Tower Cleaning.
Which water is used in cooling tower?
Both HVAC and utility power plant cooling tower water systems generally use copper and Admiralty tubes in their chillers and condensers and must limit the ammonia in recycled water.
What chemical is used for water treatment?
The U.S. Environmental Protection Agency (EPA) allows drinking water treatment plants to use chloramine and chlorine to disinfect drinking water. Research shows that chloramine and chlorine both have benefits and drawbacks. Chlorine is a highly effective method of disinfection.
Why is sulfuric acid and sodium hypochlorite used in a cooling tower?
Sulfuric acid is often added to cooling tower water basins to maintain standard pH levels. Acid often distributes poorly in these settings because it is more dense than water. Concentrations of acid at the bottom of basins produce extremely low pH levels, causing long-term damage to the basin and associated equipment.
What is boiler chemical?
There are two main groups of Chemicals for Boilers to choose from. One chemical group for boilers is for steam boilers and the second is for hot water boilers. Steam Boiler Chemicals – These include Oxygen Scavengers, Amines, Phosphates, Polymers, and Alkalinity Builders.
Why are chemicals added to cooling water?
Nearly all cooling towers and HVAC systems benefit from using chemicals in their water. These chemicals, which vary in both function and type, serve a number of purposes; primarily, they are meant to increase the longevity of the cooling tower and prevent issues like fouling, corrosion, and Legionella over time.
What is the pH of cooling tower water?
If you have doubts about the proper pH levels for your tower water, ask your water treatment company for recommendations. A pH between 6.5 and 7.5 is generally considered the ideal range for reducing scale formation, though some non-acid treatments for scale prevention can increase the cooling tower pH range up to 8.5.
Which chemical is used in RO plant?
Acids, typically hydrochloric [HCl] or sulfuric [H2SO4], are injected into the RO feed to lower pH. Sulfuric acid is used more often than HCl acid.
What is sodium hypochlorite used for in cooling towers?
For most cooling water systems, a 12.5 percent sodium hypochlorite solution is used for chlorination because it is safe to use and relatively more economical than chlorine gas or other solid chlorine sources.
What is the pH of sodium hypochlorite?
Sodium hypochlorite (NaOCl) in the form of laundry bleach is available in most households. The concentrate is about 5.25 to 6 percent NaOCl, and the pH value is about 12.