Drinking Water Treatment – pH Adjustment – Drinking Water ...
Aug 23, 2019· Soda ash/sodium hydroxide injection . How soda ash/sodium hydroxide injection works . This treatment method is used if water is acidic (low pH). Soda ash (sodium carbonate) and sodium hydroxide raise the pH of water to near neutral when injected into a water system. Unlike neutralizing filters, they do not cause hardness problems in treated water.