Abstract: A device for clarification of liquids and separation of precipitates is characterized by that it comprises a contact chamber 1 above which there is a multi-stream settling tank 2 and below which a chamber 6 for thickening the precipitate is comprised, and comprises an overflow pocket 5 for clarified liquid, the contact chamber 1 has the shape widening upwards, preferably the shape of an inversed cone or an inversed truncated pyramid and the axis of the contact chamber 1 is skew to the level, whereas on the upper edge of the contact chamber 1 an adjustable overflow edge 4 is situated, in the upper part of the multi-stream settling tank 2 there is an outflow unit 7, and the overflow pocket 5 is comprised below the outflow unit 7, the outflow unit 7 is constructed of many uniformly distributed outlet elements 8 which are stub pipes directed upwards and situated on the upper horizontal or inclined surface of the cover plate of the unit 7, the outlet surface of all stub pipes being situated on the same common plan