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Screw Press

An automatic continuous discharge system for waste water plants

What are they and what are they for?

The screw press is a special continuous-discharge centrifugal decanter used in particular for the treatment of waste water.

After separation of the solid phase by flocculation (a process that leads to the formation of flakes of suspended material), the water is sent into the drum and subjected to the thrust generated by the rotation of the screw.

Subsequently the disks operate the dehydration of the solid part by means of a movement that simultaneously allows the expulsion of water from the disks.

The pressure cone is able to automatically adjust the compression speed according to the load of solids, in order to keep the dehydration speed constant.

The drum is automatically cleaned at calibrated intervals by a pressurized water jet.

In general, a screw press is made of high quality stainless steel in order to guarantee a high degree of cleanliness and maximum efficiency in water purification. The scraper blades are made of high-density polyurethane and can be replaced following consumption.

Applications

The screw press are used for the treatment of waste water, dehydration and in all those situations where a high degree of dryness is desired.