A dewatering device for removing entrained solids and debris from a liquid stream includes a housing defining a chamber. An auger has a first end positioned outside the chamber and a second end positioned inside the chamber. A compaction zone includes a first tube fixed to the housing. A second tube is slidably mounted on the first tube. A partition is secured to the second tube and has a first longitudinal position in the housing allowing a solids plug to form in the compaction zone and a second longitudinal position in the housing preventing the solids plug from forming in the compaction zone.

An Archimedes screw plant for separating slurry includes a tubular sifting device; a slurry feeding device; a device for evacuating the liquid fraction; and a device for evacuating the substantially dry separated solid. The device includes an upper compaction chamber of the separated solid where a solid plug of product is formed. In addition, the tubular sifting device has an upper opening being provided with an auxiliary contrast element for forming the solid plug of product.

An Archimedes screw plant for separating slurry includes a tubular sifting device; a slurry feeding device; a device for evacuating the liquid fraction; and a device for evacuating the substantially dry separated solid. The device includes an upper compaction chamber of the separated solid where a solid plug of product is formed. In addition, the tubular sifting device has an upper opening being provided with an auxiliary contrast element for forming the solid plug of product.

The invention relates to a screw press for separating filtrate from a feed material. It is characterised in that a sensor arrangement comprising a sensor for measuring the filtrate content is arranged in the discharge area, the feed material flowing towards and/or around the sensor. This allows simple, prompt, and accurate measurement of the filtrate content.

A waste processing system and method for improving compaction and/or separating organics and liquids from waste material. An elongated extrusion screw and/or an adjustable compression gate may be provided to improve the compression of waste material. An improved extraction tube may also be provided to facilitate separation and removal of organics and other liquids from the compressed material. At least one sensor may be provided for sensing an increasing accumulation of waste material awaiting to be processed. An exemplary embodiment may also be adapted to add dry fraction to a waste load that is wet with organics or other liquids to improve compressibility. A system and method may also be adapted to automatically adjust to improve compression of the material and facilitate more efficient production.

A waste processing system and method for improving compaction and/or separating organics and liquids from waste material. An elongated extrusion screw and/or an adjustable compression gate may be provided to improve the compression of waste material. An improved extraction tube may also be provided to facilitate separation and removal of organics and other liquids from the compressed material. At least one sensor may be provided for sensing an increasing accumulation of waste material awaiting to be processed. An exemplary embodiment may also be adapted to add dry fraction to a waste load that is wet with organics or other liquids to improve compressibility. A system and method may also be adapted to automatically adjust to improve compression of the material and facilitate more efficient production.