Water aeration method. RU patent 2513440.
 Method of purification of the waste waters and the storm waters from mechanical impurities and the device for its realization / 2278828The 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. |
| Method of purification of the waste waters and the storm waters from mechanical impurities and the device for its realization / 2278828 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. |
 Water aeration method / 2513440Water aeration method involves feeding gas through a pipe into an aeration apparatus, e.g. an aeration tank, dispersion thereof, wherein the aerator used is tuff with open porosity of 48-52% having a flat, conoidal, spherical or cylindrical shape, and the aeration gas used is oxidising gases, e.g. ozone, oxygen, air, chlorine or mixtures thereof. |
| Membrane unit and membrane separator / 2523806 Invention relates to membrane gas separation. Membrane separator comprises membrane element immersed in processed liquid, processing bath, air distribution device located above membrane element, and set of plate arranged between membrane element and air distribution device. Note that plates are arranged in multistep configuration, width of every plate decreasing as they get off from said air distribution device. |
FIELD: chemistry.
SUBSTANCE: water aeration method involves feeding gas through a pipe into an aeration apparatus, e.g. an aeration tank, dispersion thereof, wherein the aerator used is tuff with open porosity of 48-52% having a flat, conoidal, spherical or cylindrical shape, and the aeration gas used is oxidising gases, e.g. ozone, oxygen, air, chlorine or mixtures thereof.
EFFECT: low costs.
5 dwg
The invention relates to sewage treatment and can be used in biological wastewater treatment in the aerators.
Known aerators (patent RU №120644, C02F3/18, publ. 27.09.2012, patent RU №2260566, C02F 3/18, publ. 20.09.2005)containing supporting tube with a radial holes and dispersing floor with a variable porosity and average size of pores.
Known aerator (application RU №2004132862, C02F 3/20, publ. 10.06.2005), containing porous plastic molded element.
The closest technical solution is (see sewage. Textbook for high schools. S.V. Yakovlev, and other Ed. 5-E. M., stroiizdat, 1975, s) aerator in the form of porous filtronic plates measuring 300 x 300 mm and thickness of 35 mm or porous pipes with diameter 70-200 mm, made of chamotte, which is associated with a mixture of liquid glass of fine fireclay dust, or of quartz sand and coke, which are connected bakelite resin. Filtresi or pipes are placed in the aeration device, for example in the aeration tank. Plates or tubes are placed in two or three rows supply in aeration required air volume. Air is supplied through the main ducts and risers to the channel, covered with the plates, risers are placed in 20-30 meters
However Filtrona plate can become clogged inside with the dust, scale and rust, and external - can fill bacterial film, so need to be cleaned, but it is enough for a short time. So every 7 years Filtrona plate completely replaced with new ones, which increases operating costs
The task of the invention - reducing economic costs.
The technical result consists in the following: as of the aerator is natural material - tuff. Tuff has an open porosity, allowing it to be used as aerator - disperser air. The cost of its production is minimal and are only in the cutting of natural material - tuff necessary size and shape of aerators depending on the specific conditions of use. Replacement of such aerator no cost to manufacture.
The essence of the invention consists in that the method of aeration of water, including the supply of gas through the pipeline inlet in the aeration device, for example in the aeration tank, its dispersion, the diffuser is used tuff with open porosity 48-52%, in the form of a flat, conoidal, spherical or cylindrical form, and as aeration gas used gases-oxidants such as ozone, oxygen, air, chlorine or their mixtures.
The invention is illustrated by drawings, where figure 1 shows the location of the diffuser made of tufa, figure 2-5 - form of diffusers made of tufa, respectively: flat, cylindrical, spherical, coloidala.
Aeration device is a tank 1 with a trunk pipeline 2 for filing aeration gas strut 3. Tank 1 installed aerator tuff 4.
The method is as follows.
Tank 1 aeration devices by pipeline 2 served aeration gas which is fed to the aerator tuff 4 and dispersed into the bubbles. This aerators tuff 4 can be flat, cylindrical, spherical, comodality.
Porosity tuff 48-52%. The less porosity the need to serve a larger number of gas for saturation and chemical interactions that leads to the required high pressure compressors and, consequently, to higher energy costs. If porosity above 52%, and accordingly the size of pores and large gas bubbles coming out of dispersant, have increased the size and reduced mass transfer coefficient. And this requires the submission of the increased amount of gas from the compressor, which in turn causes increased energy costs.
The form of the diffuser is determined by the character and dispersion of substances in the liquid.
Biological treatment of wastewater aeration tanks as aeration gas is air. Biological treatment of wastewater in oxiteno as aeration gas uses oxygen. At oxidation of phenols in water quality aeration ozone gas is used, and for disinfection - chlorine.
The method of aeration of water, including the supply of gas through the pipeline to the aeration device, its dispersion, notable as the aerator is used tuff with open porosity 48-52% flat, conoidal, spherical or cylindrical form, and as aeration gas used gases-oxidants such as ozone, oxygen, air, chlorine or their mixtures.