RU2705355C1 - Device for purification and preparation of drinking water - Google Patents

Abstract

FIELD: water treatment.

SUBSTANCE: invention can be used in water treatment. Device for purification and preparation of drinking water consists of jet pump – hydrodynamic cavitator 1, cylindrical housing, ozonizing element. Cylindrical housing is coaxially divided into contact column 2 with gas discharge branch pipe 14, filter with granular charge 3, treatment zone with UV radiation 5. Ozonizing element represents glass bulb 6 with dielectric cover 13 with holes. On inner surface of bulb 6 there is a perforated electroconductive layer 9, which is touched by conducting bridges 8 of internal central pipe 7, which is a high-potential electrode connected to high-voltage transformer 10. Electroconductive housing of device is low-potential electrode and connected to high-voltage transformer 10.

EFFECT: invention allows reducing power consumption, weight and size parameters, increasing efficiency of water treatment, simplifying the design and improving reliability of the device.

1 cl, 1 dwg

Description

The invention relates to combined methods of processing and disinfecting water using several chemical components and physical effects to obtain clean water in a closed loop.

The device is intended for the preparation of drinking and industrial water from fresh water of natural open and underground sources, as well as centralized and decentralized water supply systems of municipalities and industrial enterprises.

The device consists of a jet pump - a hydrodynamic cavitator and a cylindrical body, coaxially divided into a contact column with a gas outlet pipe, a filter with granular loading, a UV treatment zone through which the treated water and the ozonizing element pass sequentially. The latter is a glass flask with a dielectric cap with openings for the passage of atmospheric air. A perforated electrically conductive layer is applied to the inner surface of the bulb, which is touched by the conductive bridges of the inner central tube, which is a high-potential electrode connected to a high-voltage transformer that serves to divert the ozone-air mixture generated in the annular gap between the tube and the electrically conductive layer through a non-return valve to the hydrodynamic cavity . In this case, the low-potential electrode is the electrically conductive housing of the device also connected to the high-voltage transformer.

Schematic diagram of a device for purification and preparation of drinking water is presented in figure 1.

Known devices of complexes and stations for the preparation of drinking water, described in the sources: patent of the Russian Federation RU 2120403 Device for ozonation of water; patent of the Russian Federation RU 2162061 Installation for ozonation of water; patent of the Russian Federation RU 98123544 Installation for ozonation of water; patent of the Russian Federation RU 131712. Mobile water treatment complex; patent of the Russian Federation RU 2051128. A method for the preparation of drinking water; Vorobyeva L.V. Hygiene, Sanology, Ecology: Textbook / Ed. L.V. Vorobieva: St. Petersburg .: SpetsLit Publishing House, 2011 .-- 255 p .; Moiseev I.I. Oxidative methods in water and air purification technology // Izv. AN Ser. Chem, No. 3. - M., 1995 .-- S. 578-588.

The closest in technical essence is: patent of the Russian Federation RU 2162061 Installation for ozonation of water.

Signs of the closest analogues that coincide with the essential features of the claimed invention are:

- use of ozonation and filtration in the technological process of water treatment;

- mixing the ozone-air mixture with the treated water in a jet pump - ejector;

- use combined in one housing design of the reaction vessel and filter.

Common disadvantages of these objects are the following:

- relatively low sanitary reliability;

- a significant probability of an overdose of an active disinfectant;

- the absence of a stage of post-treatment with UV radiation generated by corona discharge in the ozonizing element and decomposing residual ozone in the treated water;

- unsatisfactory weight and size indicators of installations and complexes;

- high power consumption;

- treated water does not always meet the requirements of regulatory regulatory documentation.

The reasons that impede the receipt of the technical result provided by the invention when using the device according to the prototype are:

- the need to use a separate unit in the installation design - a complex, expensive and relatively unreliable ozonizer when it is running at constant productivity, which increases energy consumption and overall dimensions;

- the inability to control the dose of ozone and the inability to control and remove residual ozone in the water during its processing causes a high probability of the formation of by-products of oxidation, which are poorly removed during the treatment process and may be more toxic than the original pollution.

The objective of the invention is to increase the efficiency of devices for the preparation of drinking water, increase sanitary reliability and reduce their weight and size characteristics.

The essential features of the claimed invention, distinguishing from the closest analogue, are:

- replacing the ejector with an ejector-cavitator during water treatment will provide an additional effect of water disinfection by cavitation with highly efficient mixing of media and guaranteed ejection of a gaseous stream of ozone-air mixture;

- the use of combined processing by hydrodynamic cavitation and ozonation allows to achieve a synergistic effect, which allows for a significant reduction in the dose of reagents to achieve a high disinfection effect, which increases the sanitary reliability of the system;

- the abandonment of a separate ozonation unit in favor of the ozonizing element integrated in the design will significantly reduce the overall dimensions and energy consumption of the system, will make it possible to use corona UV radiation not only for final disinfection, but also for decomposition of residual ozone in the treated water, and also reduce the range of replaceable -spare parts and the complexity of the maintenance device.

The technical result of the invention will be in the development of a device for the purification and preparation of drinking water, which reduces energy consumption and overall dimensions, improves the efficiency of water treatment due to the rational organization of two-stage disinfection and filtration, a synergistic effect when interacting with active influences, simplifies the design by eliminating moving parts and assemblies reactors, improving the reliability of the entire installation while reducing the functional unit the front of the ozonation unit.

The general technical result for all the features included in the formula is to increase the efficiency of water treatment due to the rational organization of two-stage disinfection and filtration, as well as a synergistic effect during the interaction of active influences.

A device for purification and preparation of drinking water is proposed, consisting of a jet pump - a hydrodynamic cavitator and a cylindrical body, characterized in that the latter is coaxially divided into a contact column with a gas outlet pipe, a filter with a granular charge, a UV treatment zone through which it passes sequentially the treated water and the ozonizing element, which is a glass flask with a dielectric cap with openings for the passage of atmospheric air, to the inner the flask surface is coated with a perforated electrically conductive layer, which is touched by the conductive bridges of the inner central tube, which is a high-potential electrode connected to a high-voltage transformer, used to divert the ozone-air mixture generated in the annular gap between the tube and the electrically conductive layer through a non-return valve to the hydrodynamic cavit water is treated by hydrodynamic cavitation and ozone, while the low-potential electrode is an electric the conductive housing of the device is also connected to a high voltage transformer.

The number, purpose and operation of the functional units of the system provide a complete and comprehensive solution to the task.

A similar device can be used for the preparation of drinking and industrial water from fresh water of natural open and underground sources, as well as centralized and decentralized water supply systems of municipalities and industrial enterprises for the supply of drinking, industrial water to individual industries, enterprises, organizations, vessels, pools, small municipalities, etc.

The present invention will ensure high-quality preparation of drinking water and quality close to them using the processes of ozonation, filtration and UV radiation due to the use of a synergistic effect in the system, which occurs when several active effects and oxidizing agents are used simultaneously (Activated oxidative technologies (AOT's)). This phenomenon allows to obtain the desired effect to reduce the intensity of each of the individual effects with simultaneous use. In relation to a specific AOT's system, it consists in the simultaneous use of hydrodynamic cavitation, ozonation, and UV radiation. In this case, this will reduce the ozone dose and the intensity of UV radiation, which reduces the overall dimensions of the system elements and their energy consumption.

Using the proposed devices for water supply will increase the sanitary reliability of the systems, will always allow consumers to receive high-quality drinking water, ensure the safety of end consumers and maintenance personnel, improve the environmental situation due to the absence of emissions of chlorine-containing reagents and their decay products, reduce energy consumption and increase the reliability of the installation due to abandonment of the ozonation unit, reduction of the range of spare parts and consumed rea gents. The proposed solution will improve the overall dimensions of the water preparation systems, simplify their design, reduce construction and operating costs, and allow comprehensive automation of the work process.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of a device for purification and preparation of drinking water.

The scheme is made in the form of graphical symbols and structural elements of the device, connected functionally by the lines of movement of the liquid and the ozone-air mixture.

The device consists of a jet pump - a hydrodynamic cavitator (pos. 1) and a cylindrical body coaxially divided into a contact column (pos. 2) with a gas outlet pipe (pos. 14), a filter with a granular charge (pos. 3), in the upper and the lower parts of which have overflow windows (pos. 4, 11), a UV treatment zone (pos. 5) and an ozonizing element. The latter is a glass flask (pos. 6) with a dielectric cap with holes for the passage of atmospheric air (pos. 13). A perforated conductive layer (pos. 9) is applied to the inner surface of the flask, which is connected by the conductive jumpers (pos. 8) of the inner central tube (pos. 7), which is a high-potential electrode connected to a high-voltage transformer (pos. 10), which serves to remove ozone - air mixture, through a non-return valve (pos. 12) to the hydrodynamic cavitator (pos. 1). In this case, the low-potential electrode is the electrically conductive housing of the device also connected to the high-voltage transformer (item 10).

DETAILED DESCRIPTION OF THE INVENTION

The result is achieved by the fact that the incoming water undergoes a complex treatment in accordance with the circuit diagram of a device for purification and preparation of drinking water, shown in figure 1, as follows.

Water from the water supply system enters the hydrodynamic cavitator (item 1), where primary disinfection occurs due to the simultaneous treatment of the flow with hydrodynamic cavitation and ozone, which is ejected as part of the ozone-air mixture through a non-return valve (item 12) from the ozonizing element. Next, water enters the contact column (pos. 2), where the contact time necessary for the oxidation of impurities is provided and rises from the bottom up, while air and the remains of the unreacted ozone-air mixture are discharged through the gas outlet (pos. 14) to the atmosphere. After that, through the upper overflow windows (pos. 11), water is supplied to the granular filter loading (pos. 3), where suspended particles and mechanical contaminants are separated. Further, the flow through the lower overflow windows (item 4) passes the UV treatment zone (item 5), where the secondary disinfection with UV rays generated by corona discharge in the ozonizing element, as well as the decomposition of residual ozone in water, takes place and goes to consumers.

Atmospheric air is ejected through the holes in the dielectric cap (key 13) and enters the annular gap between the central tube (key 7) and the perforated electrically conductive layer (key 9) applied to the inner surface of the glass bulb (key 6) that touches conductive jumpers (item 8). An ozone-air mixture is created in the annular gap due to the corona discharge generated by the high-voltage transformer (item 10). In this case, the high-potential electrode connected to the high-voltage transformer (pos. 10) is the central pipe (pos. 7), the conductive jumpers (pos. 8) and the electrically conductive layer (pos. 9), and the low-conductivity casing of the device is also connected to the high-voltage transformer (item 10). Further, the ozone-air mixture is aspirated from the ozonizing element through the central pipe (pos. 7) due to the ejection created by the hydrodynamic cavitator (pos. 1).

As a result of this principle of operation of the device, the high quality of drinking water is constantly ensured and a possible excess of the oxidizing agent dose is not allowed.

Thus, the number, purpose and operation of functional units provide a complete and comprehensive solution to the task.

The present invention will ensure high-quality preparation of drinking water and quality close to them using the processes of ozonation, filtration and UV radiation. Using the proposed devices for water supply will increase the sanitary reliability of the systems, will always allow consumers to receive high-quality drinking water, ensure the safety of end consumers and maintenance personnel, improve the environmental situation due to the absence of emissions of chlorine-containing reagents and their decay products, reduce energy consumption and increase the reliability of the installation due to abandonment of the ozonation unit, reduction of the range of spare parts and consumed rea gents. The proposed solution will improve the overall dimensions of the water preparation systems, simplify their design, reduce construction and operating costs, and allow comprehensive automation of the work process.

Claims (1)

A device for the purification and preparation of drinking water, consisting of a jet pump - a hydrodynamic cavitator and a cylindrical body, characterized in that the latter is coaxially divided into a contact column with a gas outlet pipe, a filter with a granular charge, a UV treatment zone through which the processed water, and contains an ozonizing element, which is a glass flask with a dielectric cap with holes for the passage of atmospheric air, to the inner surface A perforated electrically conductive layer is applied to the flasks, which is touched by the conductive bridges of the inner central tube, which is a high-potential electrode connected to a high-voltage transformer that serves to divert the ozone-air mixture generated in the annular gap between the tube and the electrically conductive layer through a non-return valve to the hydrodynamic cavitator which is treated with hydrodynamic cavitation and ozone, while the low-potential electrode is electric wire device housing also connected to a high voltage transformer.

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