DRAINAGE PUMPING STATION Russian patent published in 2002 - IPC

FIELD: equipment for preliminary treatment of sewage water. SUBSTANCE: pumping station has feeding reservoir with suction pipelines, engine room with pumping units and pressure pipelines and cylindrical chamber with passage for discharge of liquid flow into feeding reservoir. Cylindrical chamber has air sucking opening and branch pipe for supplying antihelminthic ovicide reactant. Converging tube and diffuser are preliminarily set into said branch pipe. Cylindrical chamber with converging tube and diffuser are positioned on pressure pipeline of additional separate circulation pump for intaking liquid from feeding reservoir. Pumping station is used in drainage systems for pumping municipal, domestic, animal farming sewage waters. EFFECT: increased efficiency by preventing development of sulfate-reducing bacteria provoking corrosion of constructional members of pumping station and pressure pipelines, improved disinfection of sewage water from helminth larva. 3 dwg