Method for treating cyanobacterial bloom

The invention discloses a method for treating cyanobacterial bloom, and relates to the technical field of water treatment, the method comprises the following steps: S11, filtering for the first time to obtain a first water body and first algae mud; s12, performing electric flocculation treatment by taking an iron electrode as an anode plate to obtain a second water body; s13, filtering for the second time to obtain a third water body and second algae mud; s14, ozone combined ultrasonic treatment is carried out, and a fourth water body is obtained; s15, filtering for the third time to obtain a fifth water body and third algae mud; the third filtering device comprises a ceramsite layer, a wood chip layer and a straw layer which are arranged in a staggered manner; s16, aerating the fifth water body and then discharging the fifth water body; and carrying out centralized dehydration treatment on the first algae mud, the second algae mud and the third algae mud. The cyanobacteria bloom water body is sequentially su