Rheinkalk Gmbh

Wolfgang König

Günter Scholz

Christopher Pust

Wolfgang Rabe

Helma Honig

A method for stabilising or raising the pH of bodies of water and/or neutralising bodies of water is illustrated and described. According to the invention a feed material containing an unburnt lime product, the unburnt lime product having a granularity with a fraction &#x3c;about 10 &#x3bc;m of &#x2267;50%, is used to stabilise or raise the pH and/or neutralise bodies of water. With the aid of the proposed method the pH of bodies of water can be stabilised, raised and/or bodies of water can be neutralised effectively and in an ecologically harmless manner, and at low cost.

Methods for treating bodies of water

The invention relates to a method of raising the pH of a body of water having a pH of less than 4.5 by introducing neutralizing agent, the raising of the pH taking place in at least two stages thus: at pH levels below 4.5, a first neutralizing agent having a final conductivity of not more than 100 &#x3bc;S/cm, and, after attainment of a pH of at least 4.5, a second neutralizing agent, having a final conductivity of more than 100 &#x3bc;S/cm, is introduced into the body of water, the final conductivity of the neutralizing agents being defined as the conductivity of an aqueous suspension or solution of neutralizing agent in solution equilibrium at 25&#xb0; C., having a neutralizing agent content of 0.015% by weight.

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Wülfrath, Germany

Wolfgang König