The thickened sludge to be pumped to the dewatering unit (centrifugal decanter, belt press or filter press) will have more suspended solids content.

Each thickener mechanism shall be supplied complete with all components and accessories necessary for its correct installation, operation and maintenance: the construction materials shall be suitable for the service.

Accessories necessary for the correct operation of the equipment (such as water and sludge pipes with fittings, electrical and instruments cables etc.).