CO2 and the Neutralization of Alkaline Water

The use of CO2 for pH adjustment and control (neutralizing or lowering) has long been recognized as a cost effective alternate to Sulfuric Acid. Many companies have turned to CO2 for help with their environmental needs because it offers the following advantages:

Greater Control - as it reduces high pH levels quickly. It is then self-buffering as it reaches neutral pH levels. This self-buffering feature allows precise end-point control without the danger of overshooting into undesirable low pH levels.

Greater Safety - as CO2 is not stored as an acid solution.

Reduced Maintenance Costs - as CO2 requires less equipment and monitoring costs.

Greater Storage Capacity - convenient bulk systems make it possible to store up to twice as much neutralizing agent in the same amount of storage space with no increase in weight.

Reduced Labor Costs - CO2 requires no handling costs, and can be utilized via a completely automated system.

Extended Equipment Life - as CO2 is non-corrosive to pipes and equipment.

Precise pH Control is Essential

Precise control of pH is a necessary element in the disinfection of swimming pool and spa water, as it maximizes the potential for oxidation of organic matter. Also, precise pH balance, within proper ranges, will maximize the life of the pool and spa structure and the components of the recirculation system. Muriatic acid and carbon dioxide (CO2) are the two most common products used to reduce or lower the pH of pool and spa water. CO2 may be considered the chemical of choice.

CO2 Versus Acid

Co2 is considered to be easy to use - very safe to handle and store. Its use alone makes it virtually impossible to lower the pH of pool and spa water below 6.0. Extreme caution must be used to ensure safe handling and storage when using acid.

Telltale signs of pool and spa facilities that employ acid as the method of pH adjustment are:

• Roughening or eating away of pool/spa finish surfaces
• Corroding/leaking plumbing
• Shortened life for recirculation pumps
• Shortened life of filter systems
• Shortened life of heat exchangers
• Corroding electrical devices, conduit, and mechanical room structural supports
• Etching and destruction of equipment room concrete floors

Our CO2 feed systems will resolve the problems associated with storage and use of acid. CO2 Feed systems offer these benefits:

• CO2 creates a natural bicarbonate buffer
• pH stability
• Simple to install
• Easy to operate
• Less maintenance
• Less space required
• No spills
• Safer to use