Activated sludge flocculation: direct determination of the effect of calcium ions

C A Biggs1, A M Ford, P A Lant

  • 1Advanced Wastewater Management Centre, University of Queensland, St Lucia, OLD 4072 Australia.

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When a substance such as sodium chloride is added to water, it dissolves, forming an aqueous solution. The extent of dissolution is called solubility. The process of dissolution can exist in equilibrium, just like other chemical processes. Solubility equilibria are also called precipitation equilibria because the process of solubility can be reversible. The reverse of the solubility process is called precipitation.
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