METHOD OF PURIFICATION OF THE WASTE WATERS AND THE STORM WATERS FROM MECHANICAL IMPURITIES AND THE DEVICE FOR ITS REALIZATION Russian patent published in 2006 - IPC C02F1/52 C02F3/14 B01D21/02 

FIELD: purification of the waste waters and storm waters from mechanical impurities.

SUBSTANCE: the invention is pertaining to purification of the waste waters and storm waters from mechanical impurities, in particular, to purification of the great volumes of the waste waters and the storm waters from mechanical impurities (sand, slurry, glass breakage, etc.). The method of purification of the waste and storm waters from the mechanical impurities includes feeding the being purified waters through the gate into the internal cavity of the device body, aeration of the purified waters, settling-down of the mechanical impurities, transportation of the settled impurities to the purification pit, removal of the settling from the pit and withdrawal of the purified waste and storm waters. At that the aeration is conducted by aerators with pinholes of 70-150 microns both during and after the passage of the being purified waters above the purification pit, and more than a halve of the all mechanical impurities are being settled above the purification pit due to the aeration of the being purified flow of the waste and storm waters in this zone. The device for purification of the waste waters and storm waters from mechanical impurities includes: the horizontally located body with the bottom, gates for feeding of the purified waters and for withdrawal of the purified waters, the sand channels, the aerators, the purification pit, the tool for transportation of the settling to the purification pit and the tool for the settling removal from the purification pit. At that at least, one basic aerator is installed inside the body cavity on the bottom behind the purification pit between the sand channels along the longitudinal axis of symmetry of the bottom, and, at least one more aerator is installed in the body cavity near to the surface of the bottom perpendicularly to the longitudinal axis of the symmetry of the body bottom. The technical result of the invention is the increased efficiency of the purification due to settling-down of the maximum amount of the mechanical impurities, especially - the fine fractions of sand up to 0.2 mm in the area above the purification pit, and also due to the uniform distribution of the settled impurities and due to improvement of the hydraulic mode of the purification, that also allows to reduce the loading on the sand transportation tool to the purification pit.

EFFECT: the invention ensures the increased efficiency of the purification of the maximum amount of the mechanical impurities, the uniform distribution of the settled impurities and improvement of the hydraulic mode of the purification reducing the loading on the sand transportation tool.

12 cl, 4 dwg