SU1042783A1 - Aerator - Google Patents

Abstract

AERATOR containing a vertical cylindrical body with tangent. A device for supplying water. An arrangement for supplying and distributing an air along its wall and an opening for discharging the mixture is characterized in that with a chain increasing the efficiency of aeration by increasing the contact surface of the media and reducing operating costs, a central opening is made in the upper part of the housing. the body with the atmosphere, the device for the supply and distribution of air is made in the top of the tangential nozzles arranged along the height of the body, and the bristle for the mixture is placed in the lower part STI hull. /

Description

The invention relates to devices for saturating liquids with gases and can be used to aerate wastewater. An aerator is known that contains a supply pipe with air pipes attached to it. Cl. The disadvantage of this aerator is a low effect of liquid oxygen in the air due to short duration. contact sr. unit and their small contact surface. The closest to the invention to the technical essence and the achieved result is an aerator comprising a vertical cylindrical body with a tangential water supply device, a supply device and. the distribution of air along its wall and a hole for the release of the water-air mixture. The disadvantages of the known aerator are the low efficiency of aeration and high operating costs, which is about (5) a small contact surface and an air supply necessary by increasing the surface of contact of media and reducing operating costs. The aim of the invention is to improve the aeration process. The goal is achieved by the fact that in an aerator containing a vertical cylindrical body with a tangential device for supplying water, a device for supplying and distributing air the ear along its wall and a hole for bleeding; in the upper part of the body there is a central hole, a body together with the atmosphere, devices for inlet and air distribution made in the form of tangential nozzles placed along the height of the body, and a hole for blending Fig. 1 schematically shows an aerator, general view, and Fig. 2 is the same, top view. The aerator contains a vertical cylindrical body 1 with a tangential water supply device — a pipeline 2 equipped with an air Inlet nozzles 3, a device for supplying and distributing air, performed in the form of chuigial nozzles 4 arranged along the height of the body of the body no. 4, the nozzles 4 are arranged along a helix. The connections of the connections with the pipeline 2 and the housing 1 are sealed tightly. In the upper part of the housing 1, a central opening 5 is made, so that the housing has an atmosphere, in the lower part of the housing there is a opening b for discharging the water-air mixture. The aerator works as follows. Sewage fluid under pressure moves through pipeline 2. At the end of the pipeline (in the immediate vicinity of the spout) the static pressure is close to zero, due to which air is injected through the pipes 3 without diffusers and constricting devices. The initially saturated water-air mixture due to the tangential arrangement of the feed pipe in the cylinder moves in a spiral, which increases the duration of contact between water and air in cramped conditions (centrifugal force presses the flow to the inner wall of the housing 1). In this case, the rotating flow sucks in the housing 1 fresh portions of air through the opening 5, which provides continuous blowing of its internal surface. At the same time, the air is injected into the volume of the flow through the nozzles 4. Continuous aeration of the flow causes its specific weight to change along the direction of movement. provides good mixing of media in the zone of action of centrifugal force, directly about: Portionally dependent on mass. After this aeration, the mixture flies out of the fan due to rotation. the lower opening 6 of the housing 1, capturing the new air piston, i. Thus, the design of the air diffuser offers repeated air saturation of the fluid with oxygen of the air while stirring the water-air mixture. The absence of narrowing devices, as well as the installation of nozzles 4 flush with the inner surface of the housing 1, ensure the passage through the aerator of waste liquid containing large garbage (paper, paper, chips, t, n,). Due to this, the aerator can be installed anywhere in the wastewater treatment chain, even in the receiving chamber. The use of the proposed aerator will make it possible to increase the effect of saturating the liquid with oxygen in the air without any operating costs due to excessive pressure. The economic effect is to reduce the flow rate of air supplied by mechanical blowers.

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Claims (2)

AERATOR comprising a vertical cylindrical housing with tangent. A real water supply device, air supply and distribution devices along its wall and an outlet for discharging the mixture, characterized in that, in order to increase the aeration efficiency by increasing the contact surface of the media and reduce operating costs, a central hole is made in the upper part of the housing, the housing in communication with the atmosphere, a device for supplying and distributing air is made in the form of tangential nozzles placed along the height of the section, and the hole for discharging the mixture is placed in the lower part of pusa. ία 1042783 2 metically. A central opening 5 is made in the upper part of the housing 1, which communicates with the atmosphere, and an opening 6 for discharging the air-water mixture is placed in the lower part of the housing. The aerator works as follows. Sewage under pressure moves through the pipeline 2. At the end of the pipeline (in the immediate vicinity of the spout), the static pressure is close to zero, due to which air is injected through nozzles 3 without diffusers and narrowing devices. Due to the tangential location of the supply pipe in the cylinder, the initially saturated water – air mixture moves in a spiral, which increases the duration of the contact of water and air in cramped conditions (centrifugal force presses the flow against the inner wall of the housing 1). At the same time, the rotating flow draws fresh air into the housing 1 through the opening 5, which ensures continuous blowing of its inner surface. At the same time, air is injected into the thickness of the stream through the nozzles 4. Continuous aeration of the stream leads to a change in the direction of its specific gravity, which. provides' good mixing of media in the centrifugal force zone, directly proportional to the mass. After i [this aeration mixture due to the rotational movement of the fan flies out. lower holes 6 of the housing 1, capturing new portions of air. > Thus, the design of the proposed aerator provides multiple. the saturation of the liquid with atmospheric oxygen while stirring the water-air mixture. The absence of constricting devices, as well as the installation of pa 'tubes 4 flush with the inner surface of the housing 1, provide a passage through the aerator of sewage containing large waste (paper, rags, chips, etc.). Due to this, the aerator can be installed anywhere in the technological chain of wastewater treatment, even in the receiving chamber. Using the proposed aerator will increase the effect of saturation of the liquid with oxygen in the air without any operating costs due to overpressure. The economic effect ^ consists in reducing the air flow supplied by mechanical superchargers.