Which type of chlorine is commonly used for water treatment in pools?

Granular chlorine is often utilized in pool water treatment because of its convenience and effectiveness. It can be easily added directly to pool water without the need for dilution, making it a practical choice for operators. This form of chlorine typically dissolves quickly and can be used for both routine chlorination and shock treatment to eliminate contaminants, algae, and bacteria efficiently.

In addition, granular chlorine is generally stable and has a long shelf life, which adds to its practicality for regular usage in aquatic facilities. It also allows for easier handling compared to other forms, helping to maintain safety in the facility.

The other forms of chlorine, although they have their applications, can present more complexities in usage or handling. Liquid chlorine requires careful measurements and can pose hazards if not managed properly, while chlorine gas requires specialized equipment and safety protocols due to its toxic nature. Di-chlorine, while not a standard term used in water treatment, may refer to forms of chlorine that are not as commonly used or recognized for pool treatment.