RU2201901C1 - Water cleaning unit - Google Patents

Abstract

FIELD: water cleaning devices. SUBSTANCE: device has body with layers of catalyst and filter medium inside it, lower and upper drainage units, supply pipe line connected to upper and lower parts of body and water cleaning and regeneration pipe lines. Pipe lines are interconnected by means of water flow selector; fitted on supply pipe line before said selector is unit for delivery of air to water being cleaned. EFFECT: extended field of application; low cost of process. 4 cl, 2 dwg

Description

 The invention relates to the field of water purification by filtering from impurities of metals, colloidal and dispersed particles, bacteria and viruses.

 There are many devices for water purification, which are filters with the loading of filter material in the device casing with inlet and outlet pipes. The stream of filtered water is supplied either from top to bottom, in this case, the filter nozzle is pressed to the lower drainage system, or from bottom to top, in this case a suspended layer of filter material is formed (Chemical-Energy Handbook. - M .: Energy, 1972, p. 149-153. , Kastalsky A.A., Mints D.M. Water Treatment for Drinking and Industrial Water Supply, State Publishing House "Higher School". - Moscow, 1962, p. 500-507).

 Closest to the claimed is a device for water purification from iron, containing a housing, layers of filtering material located in it, a supply pipe, a lower drainage device for air supply and cleaning and regeneration pipelines connected by switching valves (see RF patent 2134660, publ. 08.20.99).

 The disadvantages of this device include the possibility of ejection of filter material from the housing when loosening a stream of water directed from the bottom up. This design eliminates the use in the device of combinations of filter materials with different specific gravities, for example, ion-exchange resins, silica sand, activated carbon. Another disadvantage is that loosening is carried out by a stream of water, this does not provide deep washing of the filter material and requires an increased flow of water.

 The problem to which the invention is directed, is to expand the functionality of the device by installing various types of filter materials, as well as increasing efficiency by reducing the cost of water treatment.

 The problem is solved in that a water purification device comprising a housing with layers of filter material located therein, a supply pipe, a lower drainage device, an air supply device and water purification and regeneration pipelines installed outside the housing, connected respectively to the upper and lower parts of the housing and connected to each other and the supply pipe by means of a water flow switch, provided with a catalyst layer that promotes the formation of dispersed particles from the Nij metals contained in the feed water, the air supply device is installed on the supply line to water flow switch, and over the catalyst bed is set upper drainage device.

 The filter layers can be made of ion exchange resin and, for example, silica sand. The device for supplying air can be made in the form of an ejector, and the water flow switch is in the form of a three-way valve.

 Figure 1 presents a General view of the device, figure 2 is a view of "A" in figure 1.

 The device consists of a housing 1, an upper drainage device 2, a supply pipe 3, a water flow switch 4, a lower drainage device 5, a cleaning pipe 6, a regeneration pipe 7, an air supply device, for example an ejector 8, mounted on the supply pipe 3 to the switch 4 In addition, the device includes an air valve 9, a clean water outlet pipe 10, a catalyst layer 11 located under the upper drainage device 2.

 Under the catalyst layer, a layer of ion exchange resin 12, a layer of silica sand 13 for mechanical cleaning are sequentially placed. In the upper part of the housing there is a loading window 14. The device also includes a drain valve 15 and a drain pipe 16.

 The device operates as follows.

 Water from the network or from the pump through the valve is supplied to the inlet pipe 3, then to the air supply device — an ejector 8, where air is drawn in, and a water flow switch — a three-way valve 4, after which water flows through the water treatment pipe 6 to the upper part of the housing 1 Excess air is discharged into the atmosphere through valve 9 (gaseous impurities are blown away with air, which often give an unpleasant odor to water), and water enters the catalyst bed 11, on which all forms of iron, manganese, aluminum, etc. are converted into coarse particles rsnuyu form. Passing through a layer of cation exchange resin in silver form 12, the water is saturated with silver, after which all dispersed particles from the water are removed on the mechanical cleaning layer 13, made, for example, from a layer of silica sand. Purified water leaves the housing 1 through the outlet pipe for clean water 10. The layers of filter material 11, 12, 13 are installed between the upper 2 and lower 5 drainage devices, made in the form of a mesh with a cell smaller than the granules of the filter material or in the form of drainage caps (standard drainage) .

 After the accumulation of a large number of dispersed particles in the mechanical cleaning layer 13, the resistance to water flow increases. This usually occurs after 1-2 months of continuous use.

 To remove accumulated particles, the handle of the three-way valve 4 is turned from the "Cleaning" position to the "Loosening" position, water is supplied to the bottom of the filter through the regeneration pipeline 7 and, coming from the bottom up, loosens the filter materials, freeing them from accumulated particles. This water is drained through pipe 16. The loosening process lasts 15-20 minutes. The upper drainage device 2 eliminates the removal of filter material from the filter. Then the three-way valve 4 is set to the "Cleaning" position for the next 1-2 months. Filtration and loosening processes alternate for several years.

 The loading of filtering materials is carried out through the loading window 14. The drainage of water from the housing is carried out through the drain valve 15.

 To improve the process of loosening the filter materials, an ejector 8 is installed in front of the three-way valve 4. In this case, the air enters the water not only in the filtration mode, but also when loosening. Loosening by the water-air flow occurs more intensively and the possibility of “pressing” the filter layer to the upper drainage device is excluded, which can be observed when loosening without air supply.

 Thus, the proposal will allow the installation of various filtering materials, which will expand the functionality of the device by filtering out various impurities, as well as eliminate the loss of filtering material during filter regeneration, reduce the cost of water treatment through the use of a catalyst that allows you to quickly convert dissolved forms of metals into insoluble particles, and use the source water to rinse the filter layers.

Claims (4)

 1. A device for water purification, comprising a housing with layers of filtering material located therein, a supply pipe, a lower drainage device, an air supply device and water purification and regeneration pipelines installed outside the housing, connected to the upper and lower parts of the housing, respectively, and connected between itself and the supply pipe by means of a water flow switch, characterized in that it is provided with a catalyst bed that promotes the formation of dispersed particles from meth llov contained in the feed water, the air supply device is installed on the supply line to water flow switch, and over the catalyst bed is set upper drainage device.  2. The device according to claim 1, characterized in that the filter layers are made of different materials, for example, from an ion exchange resin and silica sand.  3. The device according to any one of claims 1 and 2, characterized in that the air supply device is made in the form of an ejector.  4. The device according to any one of claims 1 to 3, characterized in that the water flow switch is made in the form of a three-way valve.

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