PLANT FOR PURIFICATION OF STORM WASTE WATER Russian patent published in 2000 - IPC

FIELD: purification of waste water. SUBSTANCE: proposed plant includes receiving accumulating reservoir, purification consisting of housing, sand receiving bin, suspended particles and petroleum products separation unit made in form of thin-layer module of tube bank and through final purification; tubes of thin-layer module are made from material possessing high wettability coefficient; thin-layer module is located inside sand receiving bin (in its upper portion); thorough final purification unit is located between housing and upper portion of sand receiving bin; part of its volume is filled with freely floating particles of material possessing high coefficient of wettability by liquid particles of petroleum products; located between housing, thin-layer module and through final purification unit is chamber with area of horizontal section reducing upward; this chamber is connected with entrapped particles accumulator arranged additionally in housing by means of pipe line. Receiving accumulating reservoir is located inside housing above sand receiving bin; its upper portion is provided with chamber whose area of horizontal section reduces upwards; it is connected with entrapped petroleum product accumulator by means of pipe line. Receiving accumulating reservoir is provided with overflow pipe line at point located above probable maximum level of waste water to be purified. Accumulating purified water reservoir is additionally located between housing and sand receiving bin; it is fitted with siphon launder. Proposed plant is additionally provided with receiving grate, well for removal of sand from sand receiving bin and if necessary with well for intake or removal of purified water. EFFECT: reduced overall dimensions and usage of materials; low cost and expenses at retained efficiency of purification of water from suspended substances and petroleum products. 5 cl, 1 dwg