RU2233798C2 - Bactericide apparatus for decontamination of water in submersible habitable vehicles - Google Patents

Abstract

FIELD: water treatment; decontamination of water in submersible habitable vehicles.

SUBSTANCE: proposed bactericide apparatus has housing provided with water supply and discharge branch pipes and divided into radiation and clarification chambers with filtration cartridges. Radiation chamber is made in form of U-shaped pipe with ultraviolet lamp and water flow swirler mounted coaxially in each side section. Water flow swirler may be made in form of disk with though holes which are inclined relative to disk axis. Disk are located as mirror image relative to each other. Water supply and discharge branch pipes are located at distance from upper edge of side sections H>d/2, where d is inner diameter of branch pipe. Water clarification chamber is secured between side sections of U-shaped pipe and is hydraulically connected with one of side sections. Filter cartridges may be made from elasto-deformable microporous material, for example polymer fibers.

EFFECT: improved quality of decontamination; compactness of apparatus; reduced vibrations and noise.

3 cl, 10 dwg

Description

The claimed technical solution relates to water treatment technology and can be applied on underwater inhabited objects (bathyscaphe, underwater stations, etc.), as well as in coastal conditions, where increased requirements are placed on the compactness of the equipment, its reliability and vibration and noise characteristics.

Known devices for disinfecting water by ultraviolet (UV) irradiation - bactericidal devices designed for disinfection of drinking water (1).

A disadvantage of the known devices is the low quality of water purification due to the lack of pre-clarification (pre-treatment) means in the apparatus, as well as increased weight and size characteristics due to the use of long-term sources of UV radiation.

These disadvantages of the known device are partially eliminated in another known device - a filter for clarification and disinfection of liquids (2). This device comprises a housing with nozzles for supplying and discharging water, divided into an irradiation chamber with bactericidal UV lamps located in its cavity and a water clarification chamber with filter cartridges installed inside it. The treated water first passes the clarification chamber, and then the irradiation chamber, which provides a better result of water purification.

The disadvantages of the known filter are:

- insufficient degree of disinfection of water;

- increased for a number of operating conditions, vibration and noise characteristics (VHS).

A device (“Water Treatment Station”) is also known, including a housing with nozzles for supplying and discharging water, an irradiation chamber with bactericidal UV lamps, filter cartridges, and water flow swirlers installed coaxially in its cavity (3).

The disadvantages inherent in this device are as follows:

- the bulkiness of the structure due to the presence of a charge filter;

- insufficient quality of water disinfection due to a single-stage UV treatment;

- increased vibration and noise characteristics due to the absence of vibration dampers.

The described water treatment station is taken as a prototype of the claimed technical solution, which is aimed at ensuring the compactness of the device, improving the quality of water treatment, in particular with regard to disinfection, reducing the vibration and noise characteristics of water treatment equipment.

The specified technical result is achieved in that the irradiation chamber is made in the form of a U-shaped tube, in each side section of which a UV lamp and a swirl of water flow are coaxially mounted; water inlet and outlet pipes are separated from the upper edges of the side sections at a distance H> d / 2, where d is the inner diameter of the pipe, and the clarification chamber is fixed between the side sections of the U-shaped pipe and is hydraulically connected to one of the side sections. In addition, the flow swirl is made, for example, in the form of a disk with through holes inclined relative to the axis of the disk, the disks in each of the chambers being mirrored with respect to each other, and the filter cartridges made of elastically deformable microporous material, for example, from polymer twisted fibers with a thickness of 15 ... 20 microns.

The bactericidal apparatus for disinfecting water on underwater inhabited objects (hereinafter referred to as the apparatus) is shown in the figures:

figure 1 - General view of the apparatus;

figure 2 - swirl flow for the left side section;

figure 3 is the same for the right side section;

figure 4 - swirl flow (section aa);

5 is a view I (side section in the area of water inlet);

6 is a diagram of UV rays in the horizontal section of the irradiation chamber;

Fig.7 is a view II (clarification chamber in the area of water inlet);

figa - wall of the filter cartridge before deformation under the influence of an external pulse pressure P;

figb - wall of the filter cartridge in an elastically deformed state;

figv - wall of the filter cartridge after deformation (P ₁ - pressure elastic relaxation)

The apparatus (Fig. 1) is a housing containing nozzles for supplying and discharging water, an irradiation chamber with bactericidal UV lamps and water flow swirls coaxially installed in it, and a clarification chamber with filter cartridges housed in it. The irradiation chamber is made in the form of a U-shaped tube 1 with lateral cylindrical sections 2 and 3, interconnected by a horizontal section 4. In each cavity of sections 2 and 3, a bactericidal ultraviolet lamp 5 is coaxially placed, protected by a quartz cover 6 and a flow swirl installed in the zone the connections of the side sections 2 and 3 with the horizontal section 4. The flow swirls 7 and 8 (Fig. 4) are made, for example, in the form of disks with through holes 9 inclined relative to the axis of the disk. The disks 7 and 8 are mounted mirror-like relative to each other m (2 and 3). In the gap between the side sections 2 and 3 of the U-shaped pipe, a clarification chamber 14 is fixed, in the cavity of which there are filter cartridges 15, tightened together in the form of a “candle” using a perforated hollow screed 16 (Fig.7). The cartridges 15 are made with the possibility of elastic deformation under the action of an external pulse pressure P (Fig.7, a, b, c). On the housing of the clarification chamber 14, a pipe 17 is provided for entering the source water into the apparatus. The cavity of the chamber 14 using the collector 18 is hydraulically connected to one of the side sections (in figure 1 - with section 1). The nozzles of the inlet 10 (Fig. 5) and the water outlet 11 (Fig. 1) are separated from the upper edge of the side section at a distance H> d / 2, where d is the inner diameter of the nozzle. All three sections (2, 3, 14) are closed from above with removable covers 19, 20, 21, and on the covers 19 and 20 there are electrical leads 22 for connecting UV lamps to the control panel and power supply.

The device operates as follows. The source water is supplied to the clarification chamber through the pipe 17 after turning on the UV lamps.

Under the conditions of an underwater inhabited object, the apparatus is installed immediately behind the injection means (behind a centrifugal or plunger pump, behind a hydrophore, etc.). At the same time, water injection means, as a rule, are a source of high-frequency or low-frequency vibration acting on the apparatus. As a result of the pulsating dynamic forces P (Fig. 7), the filter cartridges are elastically deformed and absorb the vibration energy, i.e. cartridges work like a damper. Passing through the walls of the cartridges, the water is simultaneously cleaned of highly dispersed impurities, and then through the collector 18 it is fed into the cavity of section 2, where it begins to be disinfected with UV rays (“near” UV light). The swirlers of the flow 7 and 8 provide the movement of water around the quartz cover 6 along a spiral path. Through the inclined holes 9 of the swirlers 7 and 8, the UV rays from the side sections pass into the horizontal section 4 and, thanks to the mirror arrangement of the disks 7 and 8, provide cross-beam multipath illumination of the cavity of the section 4 with “far” UV light (Fig. 6). A peculiar “air bell” 12 is formed in the upper part of the irradiation chamber, i.e. the space filled with air above the nozzle edge. The effect of UV rays 13 on oxygen in the air leads to the formation of ozone molecules, which are carried away by the water stream and together with UV rays contributes to a high-quality disinfection of water according to the principle of “synergistic effect” (UV rays + ozone). Air mass renewal in the “bell” 12 occurs continuously when new portions of water enter the irradiation chamber — due to deaeration.

The ozone formed in the zone of the air bell 12 is dissolved in the water stream and also participates in the disinfection process according to the principle of “synergetics”.

Further along the movement, the water enters the horizontal section, where the disinfection process continues due to the “far” UV light flowing through the through holes in the swirlers 7 and 8. The cross-direction of the UV rays due to the mirror orientation of the swirlers contributes to the maximum utilization of the “far” UV -Sveta.

In the side section 3, the disinfection process is completed using all of the effects described above.

Treated water through the pipe 11 is discharged from the apparatus to the consumer.

Thus, the described device realizes the following advantages:

1) Improving the quality of water treatment due to the intensification of the disinfection process by utilizing the "far" UV light and using a three-stage UV treatment.

2) Decrease in the vibration and noise characteristics of the equipment due to the use of elastically deformable microporous filter cartridges rigidly connected to the casing, operating as pulsation dampers.

3) Reducing the dimensions and weight of the apparatus by placing the clarification chamber in the gap between the side sections of the irradiation chamber.

All of the listed features of the described device are essential, since together they ensure the achievement of the task.

Used sources

1. Sokolov V.F. “Water disinfection by bactericidal rays.” Stroyizdat, M., 1964.

2. A.S. 482178 “Cartridge filter for clarification and disinfection of liquids”, 1973

3. Utility model 20084 “Water treatment station”, 2000

Claims (3)

1. A bactericidal apparatus for disinfecting water on underwater inhabited objects, comprising a housing with nozzles for supplying and discharging water, divided into an irradiation chamber with bactericidal ultraviolet lamps and water flow swirls located in its cavity, and a clarification chamber with filter cartridges installed inside it, characterized in that the irradiation chamber is made in the form of a U-shaped tube, in each of the side sections of which an ultraviolet lamp and a swirl of water flow are coaxially mounted, and the pipe supply and discharge of water separated from the upper edges of the side sections in the region H> d / 2, where d - diameter of the inner tube, wherein the clarification chamber is fastened between the side sections of the U-shaped pipe and is hydraulically connected to one of the side sections. 2. The bactericidal apparatus according to claim 1, characterized in that the swirl of the water flow is made, for example, in the form of a disk with through holes inclined relative to the axis of the disk, the disks being placed mirror-like with respect to each other. 3. The bactericidal apparatus according to claims 1 and 2, characterized in that the filter cartridges are made of elastically deformable microporous material, for example, of polymer twisted fibers.

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