| 摘要 |
Equipment is proposed, comprising: flocculator (12), coagulator (2) and floatation unit (1) arranged in annular form. The coagulator (2) is provided with disc (4) to mix and distribute polyelectrolite and water saturated with micro-bubbles of air. At the lower third of its height, the floatation unit is provided with an inlet for water saturated with micro-bubbles of air. At its top, it is provided with a sludge discharge (11). The annular arrangement of flocculator (12), coagulator (2) and floatation unit (1) is connected to an air saturator (15), operating in a pulsating mode and, in some cases, including a fill (16). A part of the purified water discharged from the floatation unit (1) is routed to the air saturator (15), without using a pump. |
