Wastewater treatment system using microbubble aeration process

摘要

The present invention relates to a wastewater treatment apparatus and a wastewater treatment method using a microbubble aeration process, and more particularly, an anaerobic tank for releasing phosphorus by removing organic matter from wastewater stored by anaerobic bacteria, and treated water transferred from the anaerobic tank An anoxic tank in which nitrogen is stored and nitrogen is removed, an aeration tank for overabsorbing and nitrifying phosphorus that is stored and discharged from the nitrogen-removed treated water in the anoxic tank, a wastewater supply unit for supplying wastewater to the anaerobic tank, and the treated water of the aeration tank. A conveying unit for conveying to the anoxic tank, a microbubble supply unit for generating microbubbles using the treated water of at least one of the aeration tank and the oxygen-free tank and the supplied gas to supply the microbubbles to the aeration tank, and an aeration agitation for stirring the treated water stored in the aeration tank A portion, and an oxygen-free stirring portion for stirring the treated water stored in the anoxic tank. According to the present invention as described above, it is possible to improve the removal rate of phosphorus and nitrogen by improving the mixing ratio of the organic matter and the wastewater from which phosphorus is released.