RU2553875C2 - Device for water saturation with oxygen - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention can be used in the systems of air-activated aeration of natural and industrial effluents at biological treatment and in flotation systems. Proposed device consists of elongated cylindrical case 1, oxygen gas feed pipe 2, water feed 3 and discharge 8 pipes and oxygen release valve. Water feed pipe 3 is connected with water intake compartment and water acceleration compartment. Diameter of the latter is larger than that of water intake compartment. Said case 1 is tightly secured by its bottom inside cylindrical bed 7 including at least one water discharge pipe 8. Bottom of said case 1 has cutouts for water passage made over its entire circle. System of vertical barriers is arranged between case 1 wall and cylindrical bed 7.

EFFECT: simplified design and erection, lower costs, reliable operation.

6 cl, 3 dwg

Description

The invention relates to the field of saturation of liquids with gas, and more specifically relates to an aeration device.

The invention can be used in pneumatic aeration systems of natural and industrial wastewater during their biological treatment, in flotation systems, for air supply during the treatment of natural and industrial wastewater.

A combined device for biochemical wastewater treatment is known, which contains a biofilter with an irrigation system located above the sump aeration tank with feed pipes for jet aeration of liquids, a circulation pump that supplies sewage to aeration pipes, inside the upper part of which there are guide protrusions in the form of spirals (RU No. 2220915).

A device for biochemical wastewater treatment, containing aeration tank with aeration unit made in the form of an ejector with an aeration pipe attached to its outlet, and pipelines supplying and discharging waste water, a pipe with guiding protrusions in the form of cylindrical spirals is installed inside the aeration pipe, causing cavitation in the circulating sludge mixture, which ensures intensive dispersion in it of air bubbles sucked by the ejector, and a uniform distribution of the latter over the cross section the outflow of the sludge mixture (RU No. 2279408).

A device is known which comprises a water supply pipe with a conical nozzle and a coaxially located confuser, an air supply pipe, a mixing chamber and a diffuser. The water supply pipe is connected to the water supply pipe through a cylindrical switchgear located coaxially outside the air supply pipe, which is also a confuser. The distribution device for supplying water to the nozzle is equipped with at least three nozzles, the axes of which are located at an acute angle to the axis of the water supply pipe. The cross-sectional area of the air supply pipe is 1.5 times larger than the cross-sectional area of the water supply pipe. The cross-sectional area of the switchgear is greater than the area of the air supply pipe by at least 1.25 times. The total cross-sectional area of all nozzles is equal to the cross-sectional area of the switchgear (RU 1224833).

The disadvantages of the known devices is the passive saturation of the droplets of the liquid stream with atmospheric oxygen for a limited period of time with a significant increase in the size and cost of the aeration device.

A device for aeration of liquid is known, consisting of a central riser with a conical funnel in the upper part, a case located around the central riser, ending in the upper part with a mini-tank and mounted on a horizontal plug through which the central riser passes. In this case, the central riser with a case form a pressure cavity, bounded below by a horizontal plug. A pipe with a flange for introducing the source fluid is located at the bottom of the case. The device is additionally equipped with air pipes placed vertically in the pressure cavity, while their lower ends enter at different horizons inside the central riser in the area from the bottom edge of the conical funnel to the horizontal plug. Their upper ends are brought above the level of the processed fluid in the mini-tank. For ejection of air into the central riser, the air pipes with their lower ends enter the cavity of the central riser by means of half-bends, while the cutoffs of their sections are turned in the direction of flow (RU No. 2181343).

A device for aeration of a liquid is known, comprising a vertically arranged pipe, an air duct, an air chamber. The duct is connected to an air chamber located on the perforated portion of the pipe. The device is additionally equipped with a swirl chamber coaxially connected to the pipe. The swirl chamber is located below the air chamber. The diameter of the vortex chamber is 3-5 times larger than the diameter of the pipe. To the vortex chamber tangentially connected pipe for supplying fluid (RU 2189365).

A disadvantage of the known system is the complexity of the design of the aerator with insufficiently high aeration efficiency.

Also known is a technical oxygenator consisting of a housing, a fluid supply pipe, a saturated water drain pipe, an oxygen supply valve, a dirt drain pipe, a level regulator sensor and a control unit (electronic resource: http://centr-plastik.ru/razvedenie-ryby- v-basseinakh / oksigenator /).

Closest to the proposed technical solution (prototype) is the device (US 7571899 B2, publ. 11.08.2009). The known device for saturating water with oxygen consists of an elongated cylindrical body, an oxygen gas supply pipe, a water supply pipe and a water outlet pipe (a new prototype has been added).

The disadvantages of the known systems include the complexity of the aerator designs with low aeration efficiency and cumbersome design.

The task of creating and the technical result of the proposed technical solution is to obtain a device of a simplified design that provides effective aeration of water, increasing the reliability of operation, simplifying installation of the aeration device and reducing the cost of the aeration process.

The claimed technical result is achieved by creating a device for saturating water with oxygen, which consists of an elongated cylindrical body, in the upper part of which there is a pipe for supplying gaseous oxygen, a valve for discharging gas and a pipe for supplying water connected to the water receiving compartment and the water acceleration compartment, the diameter of the compartment for accelerating water exceeds the diameter of the compartment for receiving water, the elongated cylindrical body with its lower part is hermetically fixed inside the cylindrical base, containing necks least one water outlet pipe, wherein the lower portion of the elongated body along the entire circumference of the slits for the passage of water, between the walls of the elongated body and the base is formed a system of vertical barriers, allowing fluid to move in different directions.

A device for saturating water with oxygen can be made of polypropylene with a thickness of 3 to 5 mm or any other suitable inert material.

In a preferred embodiment, the elongated cylindrical body is not more than 1000 mm high and not more than 350 mm in diameter. The base is made with a height of not more than 550 mm and a diameter of not more than 650 mm.

The water supply pipe, if necessary equipped with a pump, is connected to the water intake compartment and the water acceleration compartment, while the diameter of the water acceleration compartment exceeds the diameter of the water intake compartment, and in a preferred embodiment, the water supply pipe has a diameter of 100 mm, the water intake compartment is 160 mm, and the water acceleration compartment does not exceed 220 mm.

The system of vertical barriers can be performed using a ring built between the elongated cylindrical body and the base, hermetically fixed to the bottom of the base. Preferably, the ring is provided with a diameter of 460 to 500 mm and a height of 300 to 400 mm.

In a preferred embodiment, the base in its lower part comprises an additional tap for draining the water.

In a preferred embodiment, the cylindrical elongated body at a height not exceeding the height of the base contains elongated slots along the entire diameter, preferably of a width of 3 to 15 mm and a length of not more than 200 mm.

In a preferred embodiment, the base comprises two water outlet pipes made opposite each other. Preferably, the water outlet pipes are located at a distance of 5 to 25 mm from the bottom.

The following is an example of the implementation of the proposed technical solution, in no way limiting other possible ways of its implementation.

In FIG. 1 is a General view of the inventive device for saturation of water with oxygen.

In FIG. 2 is a sectional view of a device for saturating water with oxygen.

In FIG. 3 is a sectional view of a device for saturating water with oxygen with a demonstration of fluid passage.

A device for saturating water with oxygen is made of an elongated cylindrical body 1, in the upper part of which there is a pipe for supplying gaseous oxygen 2, a valve for discharging gas (not shown in the drawing) and a pipe for supplying water 3 connected to the water receiving compartment 4 and the water acceleration compartment 5. With its lower part 6, the elongated housing 1 is hermetically fixed inside the cylindrical base 7. The base contains two water outlet pipes 8, made opposite each other. On the lower part of the elongated housing 1 along the entire circumference are made slots 9 for the passage of water. Between the walls of the elongated housing 1 and the base 7, a ring 10 is made forming a system of vertical barriers. The cylindrical elongated body 1 contains elongated slots 11 for the return of oxygen along the entire diameter.

The device operates as follows. The direction of flow of water in the drawing is shown by arrows.

With the pump, water is supplied to the device for saturating water with oxygen through the water supply pipe 3 to the water receiving compartment 4, then the water is accelerated between the water receiving compartment 4 and the water acceleration compartment 5 and directed vertically downward. Oxygen is supplied through the oxygen gas supply pipe, which fills the central body. A device for saturating water with oxygen is filled with water to the height of the base. Further, water under pressure falls down, passing through the central body filled with oxygen, and hits the surface of the water in the lower part of the device. When a falling stream of water hits the surface of the water, a suspension of small particles of water and oxygen is formed in the lower part of the central body, which entails the active dissolution of oxygen in water. Further, oxygen-enriched water passes through the lower rectangular slots 9 of the lower part of the base, rises up between the outer wall of the central body 1 and the wall of the ring 10, then the water unfolds in the opposite direction, passing between the walls of the ring 10 and the base 7, and is discharged through the water outlet pipes 11 outside the device to saturate water with oxygen.

Gaseous oxygen not dissolved in water is returned to the cavity of the central body through the slots 12 made in the walls of the body and is again dissolved in water.

The claimed proposal is industrially applicable and has significantly higher efficiency and stability compared to known devices due to structural simplicity. The low cost of the material used, the absence of electrical and complex mechanical components and assemblies can significantly extend the life of the device and makes the device very attractive from an economic point of view.

Due to its small size, the device can be integrated into existing water treatment systems.

Claims (6)

1. Device for saturating water with oxygen, consisting of an elongated cylindrical body, an oxygen gas supply pipe, a water supply pipe and a water outlet pipe, characterized in that it contains an oxygen outlet valve, a water supply pipe connected to a water receiving compartment and a water acceleration compartment, the diameter of the compartment for accelerating water exceeds the diameter of the compartment for receiving water, an elongated cylindrical body with its lower part is hermetically fixed inside a cylindrical base containing at least one water outlet pipe, and on the bottom of the elongated cylindrical body along the entire circumference, slots are made for the passage of water, and a system of vertical barriers is made between the walls of the elongated body and the cylindrical base, allowing water to move in different directions. 2. The device according to claim 1, characterized in that the housing and base are made of polypropylene, preferably from 3 to 5 mm thick. 3. The device according to claim 1, characterized in that the system of vertical barriers is made using a ring built between the elongated cylindrical body and the base, hermetically fixed to the bottom of the base. 4. The device according to claim 1, characterized in that the base in its lower part further comprises a tap for draining the water. 5. The device according to claim 1, characterized in that the elongated cylindrical body at a height not exceeding the height of the base is provided with elongated slots. 6. The device according to p. 1, characterized in that the base contains two water outlet pipes located opposite each other.

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