| 摘要 |
<p>PURPOSE:To enhance the purifying capacity of a purifying treatment apparatus by arranging a module unit consisting of two modules made of mineral matter connected by a connection flange unit to the water forcible circulating flow path of a water tank. CONSTITUTION:When a circulation pump 10 is operated, the sewage containing org. matter and ammonia in a water tank 1 enters the circulation pump 10 from the bottom part of the water tank 1 through an inflow passage 11 and the air pressurized and sucked by an oxygen supply means 8 is mixed with the sewage. Then, the sewage enters the first and second modules 4, 5 filled with cultured aerobic bacteria, and the activating substance of these bacteria. The org. matter and ammonia in the sewage are subjected to oxidative decomposition by the aerobic bacteria or the like bonded to the surface of mineral matter from the beginning within the modules 4, 5 to become nitrate. Subsequently, the sewage enters an ultraviolet sterilizing unit 9 and the pathogenic bacteria of the fish in a water tank 2 are killed by ultraviolet rays.</p> |
