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1. (WO2013160030) DEVICE FOR DECANTING A SUPERNATANT RECEIVED IN A CLARIFIER

Pub. No.:    WO/2013/160030    International Application No.:    PCT/EP2013/055835
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Thu Mar 21 00:59:59 CET 2013
IPC: B01D 21/24
B01D 21/34
C02F 1/00
Applicants: INVENT UMWELT- UND VERFAHRENSTECHNIK AG
Inventors: HÖFKEN, Marcus
Title: DEVICE FOR DECANTING A SUPERNATANT RECEIVED IN A CLARIFIER
Abstract:
The invention relates to a device for decanting a supernatant received in a clarifier (1), comprising: a decanter (2) which is pivotally attached to a clarifier (1) and which comprises a decanter head (5) that has a water inlet opening (6); a pivoting device (7) which is connected to the decanter (2) via an actuator (8) with an adjustable length for raising or lowering the water inlet opening (6) relative to a floor (B) of the clarifier (1); a first measuring device (9) for measuring a fill level (H1) of the wastewater (Ab) received in the clarifier (1); a device for determining a length (L) of the actuator (8); an evaluating device with which a distance (H2) from the water inlet opening (6) of the decanter (2) to the floor (B) of the clarifier (1) can be determined from the length (L) of the actuator (8); and a controller (S) for controlling the pivoting device (7) such that a water inlet opening (6) immersion depth (E), which results from the difference between the fill level (H1) and the distance (H2), is kept in a specified range.