Wastewater treatment system

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The present invention relates to a wastewater treatment system and, more specifically, to a wastewater treatment system for treating wastewater by forming a large quantity of microbubbles in a saturated water tank. The wastewater treatment system according to an embodiment of the present invention comprises a wastewater tank for storing wastewater; a medicine storage tank for storing medicine liquid to be mixed with the wastewater; a mixing tank for receiving, from the wastewater tank and the medicine storage tank, and mixing the wastewater and the medicine liquid; a wastewater treatment tank for filtering flock after receiving the wastewater and the medicine liquid mixed in the mixing tank; and a saturated water tank for supplying the mixed fluid of the wastewater and the medicine contained in the wastewater treatment tank to the wastewater treatment tank again after generating bubbles in the fluid, wherein the saturated water tank includes a main body for receiving, from the wastewater treatment tank, and storing the mixed fluid of the wastewater and the medicine; a plurality of bubble generating members having a plurality of bubble holes to generate bubbles when the fluid stored in the main body passes, and dividing the main body into a plurality of spaces; and a water level sensor for providing the water level of the fluid contained in the main body. Accordingly wastewater treatment efficiency is enhanced. [Reference numerals] (AA) Lavation line; (BB) DAF concentration tank separation tank; (CC) Final discharge