revised_Customer process adjustment of pH value in the Water utilities sector

pH control

Treatment of surface waters


The first step in the treatment of surface waters to drinking water is the removal of suspended solids and colloids (particles <1 μm in diameter) from the water. For this purpose, the surface water is subjected to so-called coagulation and flocculation with the aid of chemicals. The optimum pH for this treatment is often below pH 7.4. Raw waters of medium to high alkalinity therefore benefit from a pH adjustment with acids in order to reduce the consumption of expensive chemicals and the associated production of waste sludge. In addition, when coagulating with aluminum salts, a well-adjusted pH value helps to keep the residual aluminum content low. This also reduces the aluminum load of any downstream activated carbon filter.

Application technology pH regulation in the Food & Beverages sector

Use the acidity of CO2

Easier process control, lower salt content and save on maintenance

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