Method for cyanobacteria and/or cyanobacteria metabolites removal in an aqueous solution

A method for cyanobacteria removal in an aqueous solution, comprising the following main steps:

• a first main step of determining a percentage of coagulable dissolved aromatic organic matter to remove corresponding to a cyanobacteria percentage concentration to remove;
• a second main step of determining an optimal coagulant dose corresponding to the determined percentage of coagulable dissolved aromatic organic matter to remove;
• and
• a third main step of applying said optimal coagulant dose to the aqueous solution as an adjusted coagulant dose for cyanobacteria removal,
• wherein the method further comprises, prior to the main steps, the following preliminary steps:
• a first preliminary step of determining the cyanobacteria percentage concentration to remove;
• a second preliminary step of measuring a turbidity of the aqueous solution;
• a third preliminary step of measuring dissolved aromatic organic matter of the aqueous solution;
• and
• a fourth preliminary step of identifying a category corresponding to the aqueous solution by using:
• (1) the measured turbidity value from the second preliminary step and the measured dissolved aromatic organic matter value from the third preliminary step;
• and (2) a list of predetermined categories, wherein each category in the predetermined categories is linked to a relation between a cyanobacteria percentage concentration to remove and a percentage of coagulable dissolved aromatic organic matter in the aqueous solution,
• said identifying the category corresponding to the aqueous solution is based on at least:
• (1) a comparison between the measured turbidity value from the second preliminary step and a plurality of predetermined turbidity values, and
• (2) a comparison between the measured dissolved aromatic organic matter value from the third preliminary step and a plurality of predetermined dissolved aromatic organic matter values,
• wherein each pair of data obtained from the measured turbidity value from the second preliminary step and the measured dissolved aromatic organic matter value from the third preliminary step corresponds to a predetermined category,
• wherein the category corresponding to the aqueous solution provides a predetermined relationship between the percentage of cyanobacteria concentration to remove and the percentage of coagulable dissolved aromatic organic matter to be remove, and
• wherein the first main step uses said predetermined relationship and the determined cyanobacteria percentage concentration to remove from the first preliminary step.