| 摘要 |
The present invention relates to a sewage treatment system. The sewage treatment system comprises: a primary sedimentation tank which receives sewage and performs sedimentation; a biological reactor tank which receives treated water from the primary sedimentation tank and eliminates nitrogen (N), phosphorous (P) and organic material using microorganisms; a secondary sedimentation tank which receives treated water from the biological reactor tank and sediments microorganism sludge; a turbidity purification tank which receives treated water from the secondary sedimentation tank, measures a turbidity level, and purifies turbidity; and a filtration means which receives treated water from the turbidity purification tank and eliminates filter material. According to the present invention, an effect can be achieved in that a state of treated water discharged from the secondary sedimentation tank is measured via an image sensor, and thus a turbidity level can be reduced by supplying a coagulant via a coagulant inlet when a turbidity level of sewage is equal to or lower than a predetermined value. Furthermore, another effect can be achieved in that a connection tube through which treated water passes is formed in the form of a transparent U-shaped circular tube, and thus attachment of impurities can be minimized. |
