Bicarbonate Water Alkalinity

Bicarbonate (HCO3) ions are the principal alkaline constituent in almost all water supplies. Alkalinity in drinking water supplies seldom exceeds 300 mg/l. Bicarbonate water alkalinity is introduced into the water by CO2 dissolving carbonate-containing minerals. Alkalinity water control is important in boiler feed water, cooling tower water, and in the beverage industry. Alkalinity neutralizes the acidity in fruit flavors; and in the textile industry, it interferes with acid dying. Alkalinity is known as a "buffer".

Bicarbonate Alkalinity Water Treatment - In the pH range of 5.0 to 8.0 there is a balance between excess CO2 and bicarbonate ions in water. The bicarbonate water alkalinity can be reduced by removing the free CO2 through aeration. Another effective Bicarbonate alkalinity water treatment method is done by reducing the feeding acid to lower the pH. At pH 5.0 there is only CO2 and 0 alkalinity. A strong base Anion Exchanger will also remove alkalinity from water.