RU2489363C1 - Water treatment unit - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to drinking water treatment by electrolysis, particularly, to electrochemical devices to this end. Proposed device comprises water electrochemical treatment unit and detachable filter. Said water electrochemical treatment unit comprises metal case for water treatment accommodating adapted of aluminium alloy arranged there inside to make clearance between case inner surface and adapter outer surface. Metal case makes a cathode while said adapter makes an anode to be connected to appropriate poles of power supply. Water discharge device is arranged at case bottom and communicated with plug-in joint outlet located nearby said case, approximately, level with its top edge. Aforesaid filter is to be coupled with water electrochemical unit case and comprises casing to house filtration element, water feed device and pure water drain device. Said water feed device includes plug-in joint inlet to be connected to plug-in joint outlet. Note here that the latter comprises valve.

EFFECT: higher efficiency of cleaning.

8 cl, 4 dwg

Description

The invention relates to the field of purification of drinking water, specifically to electrochemical devices for water purification by electrolysis.

Electrochemical water purification devices have the widest range of contaminants removed from water. After this treatment, the salt composition characteristic of the region remains almost unchanged, since the treatment removes mainly impurities introduced into the water due to the activities of human society. During the electrochemical treatment of water, accumulation of removed impurities in the device does not occur, therefore, the quality of the treated water remains unchanged throughout its life.

Known devices for electrochemical water purification, including an electrolyzer and a flotation chamber and made as a whole.

In the "Device for the electrochemical treatment of water", RU 2381996, publication 2010.02.20, having a metal cathode body, inside of which there is a cassette containing a base, on the outer surface of which at least one anode electrode is located, which is made in the form of an aluminum plate alloy. The cassette is placed with the formation of at least one vertical channel between the surface of the anode and the surface of the housing. At the bottom of the casing there is a device for supplying treated water, and at the top of the casing there is a device for discharging treated water.

The “Electrochemical water treatment device for water purification devices” is also known, RU 2397956, publication 2010.08.27, comprising a cylindrical metal casing — a cathode, a cylindrical aluminum alloy insert — an anode — is placed inside the casing, with the formation between the inner surface of the casing and the outer surface of the insert cavities. At one end of the casing there is a device for supplying treated water to the cavity, and at the other end of the casing there is a device for draining treated water from the cavity. The housing and insert contain contacts for connection to an electric current power source. The cavity between the housing and the insert is sealed.

The closest is the solution according to patent US 7931814 "Electric water filter", publication 2010.12.16, which consists of a housing, a filter medium located in the housing. The first electrode is installed on the inner surface of the housing and consists of an electrically conductive material, and the second electrode is connected to the inner surface of the housing, while the second electrode consists of an alloy consisting mainly of aluminum, zinc, rare earth metals.

The technical problem solved by this invention is to create a compact device that provides effective water purification, that is, electrochemical water purification and final filtration of purified water.

The inventive water purification device comprises an electrochemical water treatment unit and a removable filter unit. The electrochemical water treatment unit includes a metal casing forming a cavity for the water to be treated; an aluminum alloy insert is placed inside the casing, with a gap between the inner surface of the casing and the outer surface of the insert. The metal casing is the cathode, and the insert by the anode, cathode and anode are made with the possibility of connecting to the corresponding poles of the power source. At the bottom of the casing there is a water drainage device connected to the output part of the detachable connection installed near the casing at the level of its upper cut. The filter unit is made with the possibility of removable placement on the housing of the unit for electrochemical water treatment and comprises a housing with a filter element installed inside, a water supply device and a drain of clean water. The water supply device includes an inlet part of the detachable connection, configured to connect to said output part of the detachable connection, while the output part of the detachable connection includes a valve.

At the first stage of water treatment, it is produced inside the electrochemical water treatment unit, with the filter unit removed. After this treatment is completed, a filter unit is installed on the electrochemical water treatment unit, the output and input parts of the detachable connection are connected, and then the water is purified from the residual sludge by the filter. The valve in the detachable connection is closed when the connection is undocked and open when the parts of the connection are docked.

This water purification device provides, on the one hand, an effective electrochemical treatment of water due to the arrangement of electrodes between each other and the organization of a water space that provides electrochemical treatment of water of the entire volume of water due to circulation, while the process of flotation and coagulation is also effective.

On the other hand, the process of filtering water from sludge is effectively organized. It occurs due to the fact that the treated water is discharged at the bottom of the housing through the water drainage device. In this case, the water drainage device is connected to the output part of the connection installed at the housing at about the level of its upper cut. An important feature of this design is the fact that in each subsequent portion of the treated water it practically does not penetrate the system for the removal of purified water from the electrochemical water treatment unit. This is due to the valve installed in the output part of the plug-in connection, which is closed when the output and input parts of the plug-in connection are disconnected. This design feature improves the reliability of the device.

In addition, this design is simple, technologically advanced to manufacture.

In the particular case, in order to ensure better water circulation, the casing of the electrochemical water treatment unit is made of cylindrical shape, and the cylindrical insert is also made of cylindrical shape.

The insert can be installed at the bottom of the housing, which provides a flotation mode when lifting water during electrolysis.

The water drainage unit of the electrochemical water treatment unit may include a pump.

A handle can be attached to the casing of the electrochemical water treatment unit, on which the connection between the water drainage device and the outlet connection is located. Inside the handle, in the connection channel, a primary filter can be placed after electrochemical treatment of water.

In addition, the valve of the output part of the detachable connection is configured to close when the output and input parts of the detachable connection are disconnected.

The water treatment device is compact and provides ease of use by combining the electrochemical water treatment unit and the removable filter unit. Moreover, the device not only takes up small dimensions, but is also easy to operate.

The design of the device is illustrated by drawings.

Figure 1 shows a sectional view of the design of a device for purifying water assembly.

Figure 2 shows a section of a block of electrochemical water treatment before water treatment.

Figure 3 shows a section of a removable filter unit.

Figure 4 shows an example of the operation of the device after electrochemical cleaning, at the stage of final filtration.

The water purification device (FIG. 1) comprises a unit 1 for electrochemical water treatment and a removable filter unit 2. Block 1 of the electrochemical water treatment includes a metal casing 3, forming a cavity 15 for the treated water. Inside the housing 3 there is an insert - an electrode 4 made of aluminum alloy, with a gap 5 being formed between the inner surface of the housing 3 and the outer surface of the insert 4. The metal housing 3 is the cathode, and the insert 4 is the anode, which are connected to the corresponding poles of the power source (not shown in the drawings ) The power supply can be performed within block 1 or as a separate device connected to the anode 3 and cathode 4 through the connector. At the bottom of the housing 1, a water drainage device 6 is installed, comprising a pump 7 and connected to an output part 7 of a detachable connection installed at the housing 3 at approximately the level of its upper cut. A valve is installed inside the output part 7 of the detachable connection, which in this example of construction is automatically closed when the detachable connection is undocked. A handle 13 is attached to the housing 3, inside which a primary filter 14 is placed. The water drainage device 6 is connected to the outlet part 7 of the detachable connection, through the channel 16 located at the bottom of the housing 3, the channel inside the handle 13, with the primary filter 14 located therein.

The filter unit 2 is arranged for removable placement on the housing 3 of the electrochemical water treatment unit 1 and comprises a housing 9 with a filter element 10 installed inside, a water supply device 11 and a drain of clean water 12. The water supply device 11 includes an input part 8 of a detachable connection connected to an output part 7 of a detachable connection of an electrochemical water treatment unit 1. In the described example of the detachable connection design, the valve automatically closes the hole (not shown in the figures) when the output part 7 and the input part 8 are disconnected.

The device operates as follows.

Block 1 of the electrochemical treatment of water (Figure 2) is installed on the surface with the removed block 2 of the filter (Figure 3). Water is poured into the cavity 15 of the metal housing 3, which is subsequently subjected to electrochemical treatment. The electrodes are supplied with voltage from the power supply, which, as a rule, is equal to 24 V, the current strength is several amperes. In the process of electrochemical processing in the interelectrode space, between the body 3 and the insert 4 are formed hydroxides (hydroxides) of metals and gas bubbles, mainly hydrogen. The flow of water due to the movement of gases rises up into the cavity 15. In the gap 5 (interelectrode space), more and more new portions of water are suitable, forming a turbulent flow in the cavity 15. Due to this movement of the flow in the free volume, flotation processes occur. Bubbles of gases capture the smallest particles of sludge and lift them up, where a sludge (coagulant) is formed at the surface of the water containing impurities removed from the water. During processing, a certain amount of solid impurities is deposited on the bottom of the housing 3 of the block 1.

After the end of the process of electrochemical treatment of water, which lasts about 4-5 minutes, the coagulation stage begins. It is carried out by mixing water in the housing 3 using a metal stirrer. The coagulation process lasts 10-12 minutes.

After that, block 2 of the filter is installed on block 1 of electrochemical water treatment (Figure 4). The output connection 7 and the input connection 8 are interconnected. The pump 7 is turned on and the treated water enters the channel located in the handle 13, where it is first cleaned by the filter 14. Then, through the water supply device 11, the water enters the housing 9 of the filter unit, where the final cleaning of the sludge in the filter 10 takes place. contain one or more filters. Next, through the drain 12 of pure water, purified water is poured into a container 19.

During electrochemical water treatment, it is disinfected. In the water that underwent the treatment described above, the content of salts of heavy metals and organic compounds is significantly reduced, and the organoleptic characteristics of water are improved.

Claims (8)

1. A water purification device comprising an electrochemical water treatment unit and a removable filter unit, characterized in that the electrochemical water treatment unit includes a metal housing forming a cavity for the water to be treated, an aluminum alloy insert is placed inside the housing to form between the inner surface of the housing and the outer surface insertion of the gap, while the metal case is the cathode, and the insert is the anode, the cathode and the anode are configured to connect to the corresponding poles of power supply, at the bottom of the housing there is a water drainage device connected to the output part of the detachable connection installed at the housing at about the level of its upper cut, the filter unit is configured to be removably placed on the housing of the electrochemical water treatment unit, contains a housing with a filter element installed inside water supply and draining clean water, while the water supply device includes an input part of a detachable connection configured to connect to said output part of a releasable connection, wherein the outlet portion comprises releasable connection valve. 2. The water purification device according to claim 1, characterized in that said casing of the unit for electrochemical water treatment is made in a cylindrical shape. 3. The water purification device according to claim 1, characterized in that the said insert is installed at the bottom of the housing. 4. The water purification device according to claim 1, characterized in that the said cylindrical insert is made of a cylindrical shape. 5. The water purification device according to claim 1, characterized in that said water removal device of the electrochemical water treatment unit comprises a pump. 6. The water purification device according to claim 1, characterized in that a handle is attached to the body of the electrochemical water treatment unit, on which the connection between the water drainage device and the outlet connection is located. 7. The water treatment device according to claim 6, characterized in that the primary filter after the electrochemical treatment of water is placed inside the handle in the connection channel. 8. The water purification device according to claim 1, characterized in that the said valve of the output part of the detachable connection is configured to close when the output and input parts of the detachable connection are disconnected.

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