Sewage treatment system using granule

• Main Authors: JIN YONGXUN, CHOI MIN KYU, RYU CHANGHYUN, KWON DAEYOUNG, CHANHYUK PARK, CHUNG YUNCHUL, SHIN DONGKUK, SONG KYUNG GUEN
• Format: Patent
• Language: English; Korean
• Published: 03.04.2019
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present invention relates to a sewage treatment system using granules. To be more specifically, the sewage treatment system using granules comprises: an anoxic tank including a sewage inlet port through which sewage enters; an anaerobic tank connected to the anoxic tank; an intermittent aeration tank connected to the anaerobic tank, and composed of two or more divided spaces including granules and aeration devices therein, wherein the aeration devices operate alternatively; and a settling tank connected to the intermittent aeration tank. In addition, the sewage treatment system operates by the following processes: a first step in which sewage enters; a second step in which the entered sewage receives a carbon source while passing the anoxic tank; a third step in which the sewage passing the anoxic tank enters the anaerobic tank; a fourth step in which the sewage passing the anaerobic tank enters a first intermittent aeration tank and a second intermittent aeration tank including aeration devices as well as granules composed of nitrogen treated microorganisms; a fifth step in which the first intermittent aeration tank is in an aeration state and the second intermittent aeration tank is not in an aeration state; and a sixth step in which the first intermittent aeration tank is not in an aeration state and the second intermittent aeration tank is in an aeration state. Therefore, the sewage treatment system using granules can remove nitrogen and phosphorus by corresponding to outside environment changes such as temperature reduction, and can provide continuous treatment. 본 발명은 그래뉼을 이용한 하수처리시스템에 대한 것으로, 보다 상세하게는 하수가 유입되는 하수유입구를 가진 무산소조, 상기 무산소조와 연결되는 혐기조, 상기 혐기조와 연결되며, 2개 이상의 별도의 구획된 공간으로 구성되고, 상기 공간 내부에는 그래뉼과 폭기장치가 포함되면서, 상기 폭기장치는 교대로 가동되는 간헐폭기조, 상기 간헐폭기조와 연결되면서 침전조를 포함하여 구성되며, 하수가 유입되는 1단계, 상기 유입된 하수는 무산소조를 거치면서 탄소원을 공급받는 2단계, 상기 무산소조를 거친 하수가 혐기조로 유입되는 3단계, 상기 혐기조를 거친 하수가 질소처리 미생물로 구성된 그래뉼과 폭기장치가 포함된 제1 간헐폭기조 및 제2 간헐폭기조에 유입되는 4단계, 상기 제1 간헐폭기조가 폭기되고, 상기 제2 간헐폭기조는 비폭기상태인 5단계, 상기 제1 간헐폭기조가 비폭기 상태이고, 상기 제2 간헐폭기조가 폭기되는 6단계를 포함하여 운전된다.