| 摘要 |
A constructed wetland type catalytic oxidation system for advanced treatment of sewage and wastewater is provided to removal efficiencies of organic matters such as nitrogen, phosphorous, etc. contained in sewage and wastewater and prevent closing of a composite filter media layer by alternately operating an aerobic zone and a non-aerobic zone of catalytic oxidation tanks through an air injector. In a constructed wetland type catalytic oxidation system for advanced treatment of sewage and wastewater, wherein raw water such as sewage or wastewater flows in a grit and anaerobic tank(100) through an inlet, the raw water is treated through a flow equalization tank(110), settling tanks(120,130,140), etc., and treated water is discharged to the outside through a discharge tank(150), the constructed wetland type catalytic oxidation system comprises first to third catalytic oxidation tanks(200,200a,200b) sequentially installed between the settling tanks and the discharge tank, wherein the first catalytic oxidation tank is divided into a non-aerobic zone and an aerobic zone, the second catalytic oxidation tank is divided into an aerobic zone and a non-aerobic zone, and the third catalytic oxidation tank has an aerobic zone so that the constructed wetland type catalytic oxidation system is operated to perform advanced treatment of raw water such as sewage or wastewater by alternately operating the non-aerobic zone and the aerobic zone in the first and second catalytic oxidation tanks by an air injector(300) for intermittently aerating the raw water while consistently maintaining the aerobic zone in the third catalytic oxidation tank. |
