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In its commitment to implementing innovative technologies, SITRA has built a sludge dewatering plant using a screw conveyor to offer a pilot service that allows its clients to verify the effectiveness of this sludge dewatering system, considering their particular characteristics.
The plant, with a maximum treatment capacity of 3.8 m³/ha sludge concentrations of 2%, is fully automated, has remote connection and is located inside a container that facilitates its transport and movement.
The designed installation includes, in addition to the dewatering screw conveyor constructed of AISI 316 stainless steel, a sludge conditioning line consisting of a static mixer to achieve a homogeneous mixture and a diluted flocculant preparation unit that doses the flocculant into the mixer. To optimize reagent consumption, an electromagnetic flow meter has been installed in the mixer's inlet line.
The dehydrating screw features a programmable automatic washing system, allowing for continuous operation.
Other advantages offered by this system, which this pilot project aims to demonstrate, include the absence of vibrations and excessive noise, a high degree of sludge dewatering (dryness at the outlet between 17 and 30%), reduced power and washing water consumption, a long service life, and low maintenance requirements.
