Teaser Adjusting the pH-value Drinking Water

revised_Customer process adjustment of pH value in the Water utilities sector

pH control

Treatment of surface waters


The first step in the conditioning of surface waters is the removal of suspended solids and colloids (particles <1 μm in diameter). For this purpose the surface water is subjected to coagulation and/or flocculation steps with the aid of proper chemical agents. The optimum pH for this treatment is usually 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.

pH regulation (food) application technology

Use the acidity of CO2

Easier process control, lower salt content and save on maintenance

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