Method for removing water algae by utilizing ultrasonic fortified flocculation

The invention relates to a method of removing algae in water body by using low-intensity supersonic to intensify the coagulating course, belonging to water treating application field. The method intensifies the coagulating course by using low-intensity supersonic to improve coagulating effect, and removes algae in water without breaking the algae cell, first, damaging the air-pocket and photosynthetical system in the algae cell by using supersonic, to make the algae cell already flocculated and deposited will not flost and grow further; second, reducing the hydration layer of the algae cell and suspended matter particle by using supersonic, reducing zeta electric potential, improving the surface flocculability, and increasing the flocculability efficiency. Third, fastening the dispersion of flocculability agent by using supersonic, stimulating the reaction of flocculating agent with algae cell and floating particle and increasing the coagulating velocity. The refloating and further growing of algae already coagulated can be prevented by using this method, the flocculating agent consumption can be reduced, the degree of density of the flocculating product can be increased and the coagulating clearance can be improved.