From Sludge Treatment
The decanter centrifuge reliable and very efficient technique for sludge thickening. AAQUA has installed many decanter centrifuges and the whole control is fully automated. Both in biological sludge thickening and thickening of the physico-chemical sludge. Supervision is almost limited to the exchange of the sludge container and lubricating the decanter centrifuge.
In a centrifuge (or decanter) the centrifugal forces provide the means to separate the liquid and the sludge. In order to achieve a good separation (dry sludge and clear filtrate) it is necessary to add a polymer. The operation of a decanter is very simple. The control of the feeding pumps as well as all the safety features are fully integrated in the program of the PLC-controller. The simple pressing of a button initiates the startup-procedure and when the sludge tank is empty, the sludge supply pipe as well as the centrifuge itself is automaticly flushed and the centrifuge comes to a stop.
Apart from regular greasing and maintenance, this machine does not need a lot of surveillance.