Alternative Swimming Pool Purification Methods

Bromine

• Bromine, like chlorine, is a member of the halogen family, but offers more stability than chlorine at higher temperatures, often it making it more suitable than chlorine for spa or hot tub use. Bromine sanitizers in tablet or granular form often contain a small amount of chlorine. Bromine sanitizers, although generally considered a viable alternative to chlorine, are more expensive than chlorine-based disinfectants and lose their ability to sanitize faster when they are exposed to UV light.

Saltwater Chlorination

• Saltwater chlorination is a frequently used alternative to traditional chlorine systems. Saltwater systems work by passing a mild salt solution through an electronic cell that converts the saltwater into chlorine, which eventually dissipates and returns to its salt form. This type of system has more initial expense, but salt and system maintenance are inexpensive. Pools sanitized using saltwater offer softer, more pleasant water than chlorine, leaving no residue and causing little or no skin irritation or material bleaching or discoloration.

Ozone System

• Ozone is an option that uses an ozonator, or air circulation system, to deliver oxygen in the form of ozone, a natural sanitizer. Ozone is added to the end of the equipment set, which includes the water intake and a solid particle filter, to sanitize water after it passes through the filter. Ozone systems create fast and effective oxidation, but must be used with a chemical partner like chlorine or bromine to kill bacteria and algae.

UV Systems

• UV, or ultraviolet light, systems offer a sanitizing option, but must be used simultaneously with a more active agent. The UV light is harnessed as a beam of light that filtered water must pass through. Unlike chemical agents, UV systems do not create or leave a residue that will prevent the growth of bacteria and algae, making a chemical disinfectant like chlorine or bromine necessary.

Metal Purification

• Metal purification systems, or pool ionizers, are in-line systems that use chemical reactions, typically involving copper and platinum, to sanitize water. These chemical-free systems use the metals they contain to neutralize organic contaminants in water. Ionizers generally run as needed, according to a sensor, rather than continually.