Sewage pre-treatment station with shaftless screw filter

The sewage pre-treatment station type SBFCS is installed for the treatment of sewage deriving from cesspools, Imhoff tanks and industrial plants, transported by means of tank truck. The station, completely closed to ensure the maximum hygiene and safety, consists of a structure which is also used as sewage storage tank and a screw filter FCS type. The operation is easy: the sewage entering the tank from the tank truck, passing through the steel filtering screen deposits on it the suspended solid materials and undergoes to micro-screening. The trapped solid materials are lifted by a shaftless screw consisting of a first scraping section and a second conveying & compacting section – and discharged into a specific container through a hopper. In the terminal part of the screw on the same axis it is installed a shaft in order to improve the effect of compaction. During the compaction, the drain waters are recycled to the tank. The main characteristics of the equipment are: short emptying time of the tank truck thanks to the high inlet flow, maximum efficiency in the solid-liquid separation, considerable compaction of the solid material with consequent reduction in volume and weight. The station is provided with ball half-joint “Perrot” type; on request, it is also possible to have a pneumatic valve installed on the piping. Furthermore the station is complete with nozzles for the washing of tank, filtering screen and screened material. The station is made completely in stainless steel. On request, it can be provided with a specific computerized equipment for the detection of the quantity and quality characteristics of the inlet sewage.