Search International and National Patent Collections
|1. (WO2018066443) DIRTY WASTEWATER PURIFICATION SYSTEM|
|Title:||DIRTY WASTEWATER PURIFICATION SYSTEM|
[Problem] To provide a self-contained dirty wastewater purification system with improved durability and maintainability and improved degradation ability. [Solution] A dirty wastewater purification system 1 is provided with an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, and an accelerated oxidation tank 6. Each tank is disposed in proximity to any or a plurality of the other tanks and the water level in the tanks is kept the same. An immersible pump 19 that starts intermittently is provided in the anaerobic tank 3. One end of a transfer pipe 21, the other end of which is connected to an inflow opening of a solid-liquid separator 20, is connected to the immersible pump 19, and one end of a transfer pipe 22, the other end of which is positioned within the anoxic tank 4, is connected to the outflow opening of the solid-liquid separator 20. A scum pump 31 is disposed so as to float in the accelerated oxidation tank 6, and one end of a return pipe 32, the other end of which is positioned in the anaerobic tank 3, is connected to the scum pump 31.