Effect Of Mixing Process And PH On Flocculation And Removal Of Algae

In many of the methods, using the method of flocculation to removal of Microsystis aeruginosa got much attention. In the research of effect of the flocculation and removal, many researchers completed their experiments through the rotating stirring.Effects of different mixing methods (rotating or reciprocating stirring), stirring intensity and cell concentration on flocculation and removal of Microsystis aeruginosa were studied. The results showed that effect of the flocculation and removal with rotary was better than reciprocating stirring, and the effect was improved with the increase of the stirring intensity. The higher density of the algae cells, the greater stirring intensity was needed, and the resuspension process was affected by the stirring intensity and the time of standing after flocculation.In addition, effect of pH to flocculation and removal of algae was studied. The results showed that pH has a very important influence to flocculation effect of chitosan modified clays in fresh water, and acidic environment is in favour of flocculation.