Micro-bubble generator and water treatment equipment having same

The present invention relates to a micro-bubble generator capable of purifying contaminated water by generating micro-bubbles at atmospheric pressure and supplying the micro-bubbles in the water, and water treatment equipment using the same. The micro-bubble generator according to the present invention comprises: a case having an inlet chamber and a suction hole formed therein; an air supply pipe for supplying air to the inlet chamber; a water pump installed on the inside of the case, for pumping a water-air mixed fluid made by mixing water and air; and a disperser. The disperser comprises: a spray head having an outlet which is connected to a connection flow path on the inside of the case in order to spray, to the outside of the case, the water-air mixed fluid flowing along the connection flow path; an impaction plate installed in front of the outlet of the spray head so as to be separated from the outlet; a nozzle provided between the spray head and the impaction plate in order to spray, to the outside of the spray head, water and the micro-bubbles generated by colliding with the impaction plate after the water-air mixed fluid is discharged from the outlet.