STATION TO PURIFY SURFACE RUNS-OFF Russian patent published in 2003 - IPC

FIELD: conservation of water resources, prevention of fouling of water objects by surface heavy-shower runs- off, in particular. SUBSTANCE: station to purify surface runs-off includes drain collector linked to intake-distribution chamber, unit of primary treatment of water from course- dispersive particles and oil products and unit of additional treatment of water with filters based on filtering load fitted with pipe-lines supplying water for purification and discharging purified water and system to flush filtering load. Unit of primary treatment has thickener, at least one hydrocyclone, separator connected in series and is linked to unit of additional treatment of water by buffer vessel equipped with system of hydraulic flushing of sediment in the form of perforated tube which is discharge tube of separator and is laid around the edges of bottom of buffer vessel. Unit of additional treatment is supplemented with multicyclone installed in front of filters which presents three vessels with filtering loads of gravel-sand, zeolite, shungite correspondingly installed in series. System to flush filtering load is provided with vessel of flushing fluid, vessel collecting solution after flushing of filtering load, filter and pump. Station also includes system for removal of thickened phase presented by Nutsche filter communicating with thickener and carrying fixture to unload dewatered sediment. EFFECT: increased efficiency of purification of surface runs-off when they are conveyed to water object to protect environment. 4 cl, 1 dwg