METHOD TO OPTIMISE THE CHEMICAL PRECIPITATIONS PROCESS IN A WATER- OR WASTE WATER TREATMENT PLANTS

摘要

The invention relates to a method to purify water and reduce the operation costs by regulating the basicity of the aluminium based coagulants in situ as one of the parameters, such as purification of water in water- or waste water treatment plants.

主权项

1. A method to optimise the chemical precipitation process in a water treatment plant or in a or waste water treatment plant by regulating the basicity of an aluminium based coagulant, wherein
a) the basicity is regulated by the addition of hydroxide ions, wherein the hydroxide ions are added through a solution of a coagulant and b) the regulation occurs in situ and c) the regulation is based upon stored data obtained from on-line measurements of the contamination degree of the water and/or d) the regulation is based from on-line measurements of the contamination degree of incoming untreated and/or outgoing treated water.