SOLID-LIQUID SEPARATOR HAVING STIRRING FLOW FORMING MEANS

摘要

PROBLEM TO BE SOLVED: To increase separation efficiency or a separation speed of solid-liquid separation by controlling the speed and the direction of particles by utilizing inertia, and to provide a compact and inexpensive solid-liquid separator. SOLUTION: A porous member 3 for dividing an internal space to an upper separation region 2a and a lower flow region 2b is disposed in a separation tank 2. A stirring blade 4 is disposed at the lower flow region 2b. A guide plate 5 for converting whirling flow A generated by the stirring blade 4 to downward flow B is erected at a central part of a lower surface of the porous member 3. Since precipitable material in the water to be treated within the lower flow region 2b is flown by the force of inertia of a horizontal direction due to the whirling flow A generated by rotation of the stirring blade 4, the precipitable material hardly accompanies ascending flow C depending on raw water feeded quantity or the like, receives downward force due to the downward flow B and is separated.