RU164318U1 - SHIPPING OIL-WATER WATER TREATMENT OZONE - Google Patents

Abstract

A ship’s ozone-containing water purification device comprising an enclosed tank with a shut-off-regulated purified water supply pipe and a shut-off-regulated purified water discharge pipe, an ozone generator, a compressor for supplying atmospheric air and an adsorption filter, characterized in that a surface cavity is allocated in a closed tank, in the upper part of which an ozone generator is installed, made in the form of an ultraviolet lamp, while in the bottom zone of the tank there is a spray connected to the surface the cavity with a vertical tube, in turn, the adsorption filter is placed in a separate housing and is connected by an inlet through an additional shut-off-regulated pipeline to the outlet of the tank, and by an outlet - through a shut-off-regulated pipeline to drain purified water, and a safety valve is installed in the surface cavity of the tank to discharge excess air, in turn, the device is additionally equipped with a control unit, the input of which is connected to the water level sensor in the tank, and the outputs are controlled by valves of all spare parts orno-regulated pipelines.

Description

The utility model relates to technical means of water purification by treating it with ozone. The device can be used for the final purification of oily water generated during the operation of ships and ship power plants, for the disinfection of drinking water in the water supply systems of cities and towns, for the disinfection of recycled water pools.

The prior art devices for treating drinking water with ozone (see, for example, “A device for drinking water ozonation” according to copyright certificate SU No. 1632951, MKI C02F 1/78, published 1991; “A device for drinking water ozonation” according to RF patent No. 2374184 IPC C02F 1/00, publ. 2007), consisting of an ozone-gas mixture generator and a tank with water supply and discharge systems. Gas dispersing elements are installed in the bottom of the tank, connected by a pipeline to the ozone-gas mixture generator.

The disadvantage of this device is the large mass and overall dimensions, which causes difficulties in placing objects on ships.

To date, sufficient experience has been accumulated with the treatment of ozone and marine oil-containing water (see, for example, “Purification of oil-containing sub-batch water with ozone” / V.I. Reshnyak, A.I. Kalyaush, K.V. Reshnyak // Bulletin of the State University of Sea and River Fleet named after Admiral S.O. Makarov. - SPb. 2014. - Issue 5. - P.135-140; "Ship system for the purification of oily" waters according to RF patent No. 89484, IPC B63J 4/00, published on December 10, 2009 and etc.).

Among the known analogues, the closest to the proposed utility model by technical nature and purpose is the device according to the patent of the Russian Federation No. 89484, IPC B63J4 / 00, publ. 12/10/2009.

The device contains three functional blocks: preliminary, main and final cleaning. The pre-treatment unit provides static sedimentation of the source oil-containing water (HB) in order to isolate non-emulsified oil products and heavy impurities. The main cleaning unit is intended for further separation of heavy impurities and coarse emulsified oil products. At the stage of final cleaning, finely emulsified oily waters undergo final processing, after which they can be used for shipboard technical needs or dumped overboard. The final cleaning unit includes: a closed tank with water supply and drain systems loaded with activated carbon, an ozonizer with an air supply system, connected to the tank through a water-air ejector, and instrumentation.

The known device operates as follows.

The ozonizer of the finishing block generates an oxygen oxidizer (O ₃ ), then, through a water-air ejector, the formed mixture is fed into an activated carbon tank, where fine emulsified oil products are oxidized and activated carbon is sorbed. The water purified to normalized indicators of the concentration of oil products is discharged overboard through an electromagnetic valve. The control of the degree of purification fixes the device installed at the system output. In case of exceeding the level of concentration of oil products, the liquid is sent to the pre-treatment unit for reprocessing.

The disadvantage of the prototype is: the complexity of the technological scheme and structural design, which in turn is the reason for the increased overall dimensions of the installation. In addition, in the prototype, the ozone-air mixture is supplied to oily water in an ejector, from where the resulting water-air mixture enters an adsorption filter, where ozone can be absorbed by activated carbon, which reduces the cleaning efficiency.

The proposed utility model allows to obtain a new result compared to the prototype, which consists in reducing the overall dimensions of the device and improving the quality of cleaning.

To achieve the specified technical result in the ship’s ozone-containing water purification device containing ozone (as well as the prototype, a closed tank with a shut-off-regulated pipe for supplying purified water and a shut-off-adjustable pipe for draining purified water, an ozone generator, a compressor for supplying atmospheric air and adsorption filter), unlike the prototype, a surface cavity is allocated in a closed tank, in the upper part of which there is an ozone generator made in the form of an ultraviolet lamp, at ohms in the bottom zone of the tank placed nebulizer coupled to the vertical tube above the water cavity in turn adsorption filter is placed in a separate housing and is connected via a further input shut-off adjustment with the conduit outlet tank, and the output from controllable shut-off drain conduit purified water. At the same time, a safety valve is installed in the surface cavity of the tank to release excess air. In this case, the device is additionally equipped with a control unit, the input of which is connected to the water level sensor in the tank, and the outputs with controlled valves of all shut-off and regulated pipelines.

The essence of the proposed technical solution lies in the possibility of obtaining ozone inside the tank due to the implementation of the ozone generator in the form of ultraviolet lamps and placing it in the surface of the tank. The combination in one case of the ozone generation zone and its reaction zone with water can significantly reduce the overall dimensions of the installation, reduce the length of pipelines and the number of units of shut-off and adjustable valves. In addition, the proposed design allows for better mixing of ozone with water due to the direct transition of ozone into water through the air-water interface, as well as due to the intense dispersion of ozone-air mixture into water.

The choice of ultraviolet lamps for generating ozone was made based on the following considerations. There are several methods for producing ozone, among which the most common are electrolytic, electro-synthesis in a gas-discharge plasma, and photochemical. Analysis of various modern designs of ozonizers showed that ultraviolet lamps that implement the photochemical method are the most suitable for the treatment of oily water (see "Cleaning Oily Contained Shallow Water with Ozone" / V.I. Reshnyak, A.I. Kalyaush, K.V. Reshnyak // Bulletin of the State University of the Sea and River Fleet named after Admiral S.O. Makarov. - SPb. 2014. - Issue 5. - P. 135-140). Moreover, of all types of ultraviolet lamps, the ozone-forming bactericidal ultraviolet lamp type DBK-9 mounted in the OUFB-04 irradiator has optimal characteristics (cost, safety, dimensions, energy intensity, etc.) for these purposes.

A comparison of the proposed device and the prototype showed that the task is solved as a result of a new set of features, which proves the proposed utility model meets the patentability criterion of "novelty."

The ship’s ozone-containing water purification device is shown in FIG. one.

The device consists of a closed tank 1, in which the ozonation of purified water, an ozone generator 2 made in the form of ultraviolet lamps, an adsorption filter 3 with activated carbon loading, an ozone-air mixture atomizer with a vertical tube 4, the upper end of which protrudes above the water level, takes place 5, a compressor 6 for supplying atmospheric air to the tank 1, controlled valves 7, shut-off and adjustable pipelines 8, a safety valve 9, a level sensor 10.

The device operates as follows: purified water, saturated with finely emulsified oil products, is piped 8 to the tank 1. The water level in the tank 1 is regulated by the control unit 5, which, depending on the signal from the sensor 10, gives commands to the controlled valves 7 of the water supply and drain pipes 8. Simultaneously with the supply of oily water to the tank 1, an ozone-air mixture enters through the sprayer 4 located in the lower part of the tank. Ozone in the surface zone of the tank is formed using ultraviolet lamps 2 from atmospheric air supplied to the tank by the compressor 6. The pressure of the ozone-air mixture formed in the upper part of the tank 1 is regulated by a safety valve 9. The purified water is discharged through a pipe 8, passed through an adsorption filter 3 and then discharged into the pond.

It was found that the ozone oxidation process of emulsified oil products includes the following main steps:

- the transition of ozone from the ozone-air mixture into water;

- dissolution of ozone in water;

- diffusion of ozone into the reaction zone with emulsified particles of oil products;

- the oxidation reaction itself.

With a constant volume of purified water and a constant supply of ozone to the treatment device, the oxidation reaction most effectively proceeds at the beginning of the process - at high concentrations of ozone and emulsified oil products. Then, the speed of the process decreases, since during the reaction the concentration of oil products decreases and the distance and time of diffusion of the reacting substances into the reaction zone increases. A sufficient time for cleaning HB is the time when the residual concentration of petroleum products in water becomes zero or ceases to change. The oxidation process is considered complete at the time the flocculent mass of oil oxidized by ozone appears in the water. Subsequent filtration removes the mass from the water.

The inventive utility model was created by employees of the Department of Chemistry and Ecology FSBEI HE "Admiral S.O. GUMRF" Makarova "as part of research work. The cleaning device has been tested in the laboratory. As tests have shown, the proposed design solution allows to reduce the weight and dimensions of the cleaning device compared to the prototype by about 1.5 times and to ensure the concentration of oil products in the working fluid after treatment with ozone to 30 mg / l., And at the outlet of the adsorption filter to 0, 05 mg / l.

The above allows us to conclude that the claimed utility model meets the criterion of "industrial applicability".

Claims (1)

A ship’s ozone-containing water purification device comprising an enclosed tank with a shut-off-regulated purified water supply pipe and a shut-off-regulated purified water discharge pipe, an ozone generator, a compressor for supplying atmospheric air and an adsorption filter, characterized in that a surface cavity is allocated in a closed tank, in the upper part of which an ozone generator is installed, made in the form of an ultraviolet lamp, while in the bottom zone of the tank there is a spray connected to the surface the cavity with a vertical tube, in turn, the adsorption filter is placed in a separate housing and is connected by an inlet through an additional shut-off-regulated pipeline to the outlet of the tank, and by an outlet - through a shut-off-regulated pipeline to drain purified water, and a safety valve is installed in the surface cavity of the tank to discharge excess air, in turn, the device is additionally equipped with a control unit, the input of which is connected to the water level sensor in the tank, and the outputs are controlled by valves of all spare parts orno-regulated pipelines.

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