Sewage oil-water separator

Abstract

The utility model discloses a sewage oil-water separator which comprises a separation tank, a rotational flow aeration seat and a floating oil weir, the surface of the separation tank is provided with a sewage inlet pipe which is tangentially arranged and is used for leading out sewage, and the surface of the separation tank is fixedly provided with a bracket; the spiral-flow aeration seat is fixedly mounted on the bottom surface of the separation tank, an aeration ball membrane is fixedly mounted on the surface of the spiral-flow aeration seat, a sewage outlet pipe is fixedly mounted on the bottom surface of the separation tank, the bottom end of the sewage outlet pipe is fixedly connected with a water collecting disc, and a spiral-flow runner which is arranged in the tangential direction is arranged on the surface of the spiral-flow aeration seat. According to the device, the cyclone assembly is arranged, sewage in the separation tank generates a cyclone effect by utilizing tangential input of airflow and water flow, and micro bubbles move and are dispersed in water liquid to perform cyclone and upward floating movement in cooperation with upward floating movement of the bubbles, so that the air floating effect of oil liquid is improved; exporting of the floating oil layer and the water liquid layer is realized through the floating oil weir and the sewage outlet pipe respectively, so that the oil-water separation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-water separation, in particular to a sewage oil-water separator. Background Art

[0002] The flotation separation method is to introduce gas into the sewage to generate tiny bubbles, so that grease, suspended matter, etc. combine with the bubbles to form bubbles, thereby lifting them from the water, and then remove the bubbles through a surface degreasing device to achieve oil-water separation. When tiny bubbles are generated in a liquid, a thin layer of liquid film will form on the surface of the bubble due to the mutual attraction between liquid molecules. This is the surface tension. When the bubbles come into contact with substances such as grease and suspended matter, the surface tension will cause these substances to be wrapped in the liquid film on the surface of the bubble. There is a certain interaction force between substances such as grease and suspended matter and the liquid film on the surface of the bubble. This force allows these substances to be tightly combined with the surface of the bubble and float to the liquid surface with the bubble.

[0003] The existing oil-water separation flotation mainly generates fine bubbles by arranging an aerator at the bottom of the sewage pool, and uses the bubbles to float the oil molecules in the sewage. The structure is simple and the bubble distribution is uneven, resulting in low efficiency in removing oil from the sewage. In view of this, the existing problems are studied and improved, and a sewage oil-water separator is provided to solve the current problems, aiming to achieve the purpose of solving the problems and improving the practical value through this technology. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted by the utility model is: a sewage oil-water separator, comprising: a separation tank, a cyclone aeration seat and an oil floating weir, the surface of the separation tank is provided with a tangentially arranged sewage inlet pipe for sewage outlet, the surface of the separation tank is fixedly installed with a support frame, the cyclone aeration seat is fixedly installed on the bottom surface of the separation tank and an aeration ball membrane is fixedly installed on the surface of the cyclone aeration seat, a sewage outlet pipe is fixedly installed on the bottom surface of the separation tank, the bottom end of the sewage outlet pipe is fixedly connected to a water collecting tray, the surface of the cyclone aeration seat is provided with a tangentially arranged cyclone flow channel, and one end of the cyclone flow channel is connected to a bronchus, and the ends of the bronchus are fixedly connected to air distribution rings.

[0006] In a preferred example, the utility model can be further configured as follows: the sewage outlet pipe is located on the central axis of the separation tank, and the vortex flow channel is spirally wound around the outer periphery of the sewage outlet pipe, and the top end of the bronchus is sealed and connected to the outer edge of the aeration ball membrane.

[0007] In a preferred example, the utility model can be further configured as follows: the aeration ball membrane is a hemispherical aeration mesh structure, and a plurality of densely distributed aeration micropores are provided on the surface of the aeration ball membrane, and the aeration micropores are nano-scale micropores.

[0008] In a preferred example, the utility model can be further configured as follows: the number of the separation tanks is a plurality of gas tanks evenly distributed on the surface of the support frame, and the gas distribution ring is annular in structure and sleeved on the outer circumference of the plurality of separation tanks.

[0009] In a preferred example, the utility model can be further configured as follows: the sewage inlet pipe is located in the middle section of the separation tank, and is equidistant from the top of the sewage outlet pipe and the bottom of the oil floating weir, and the sewage inlet pipe is located horizontally tangentially to the surface of the separation tank.

[0010] In a preferred example, the utility model can be further configured as follows: the oil floating weir is a bucket-shaped structure and is located at the same horizontal plane as the top of the separation tank.

[0011] The beneficial effects achieved by the utility model are:

[0012] 1. In the utility model, a cyclone component is provided, and the tangential input of air flow and water flow is utilized to cause the sewage inside the separation tank to generate a cyclone effect. With the upward movement of the bubbles, the tiny bubbles are dispersed in the water, and the cyclone and upward movement are performed, thereby improving the flotation effect of the oil. The floating oil layer and the water layer are respectively led out through the floating oil weir and the sewage outlet pipe, thereby improving the oil-water separation effect.

[0013] 2. In the utility model, a hemispherical air distribution ring structure is adopted to perform all-round uniform aeration during aeration work, avoiding the problem of low oil-liquid separation efficiency in water liquid caused by concentrated aeration, and the spherical air distribution ring has lower clogging efficiency in sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation structure of a cyclone aeration seat according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation structure of a separation tank according to an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the cyclone aeration seat and sewage outlet pipe structure of one embodiment of the utility model.

[0018] Reference numerals:

[0019] 100, separation tank; 110, support frame; 120, sewage inlet pipe; 130, sewage outlet pipe; 131, water collecting tray;

[0020] 200, cyclone aeration seat; 210, bronchial tube; 220, air distribution ring; 230, aeration ball membrane; 201, cyclone flow channel;

[0021] 300. Oil weir. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] A sewage oil-water separator provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.

[0024] Combination Figure 1-4 As shown, the utility model provides a sewage oil-water separator, comprising: a separation tank 100, a cyclone aeration seat 200 and an oil floating weir 300, the surface of the separation tank 100 is provided with a tangentially arranged sewage inlet pipe 120 for sewage outlet, the surface of the separation tank 100 is fixedly installed with a support frame 110, the cyclone aeration seat 200 is fixedly installed on the bottom surface of the separation tank 100 and an aeration ball membrane 230 is fixedly installed on the surface of the cyclone aeration seat 200, a sewage outlet pipe 130 is fixedly installed on the bottom surface of the separation tank 100, the bottom end of the sewage outlet pipe 130 is fixedly connected to a water collecting tray 131, the surface of the cyclone aeration seat 200 is provided with a tangentially arranged cyclone flow channel 201, and one end of the cyclone flow channel 201 is connected to a bronchus 210, and the ends of the bronchus 210 are fixedly connected to air distribution rings 220.

[0025] In this embodiment, the sewage outlet pipe 130 is located on the central axis of the separation tank 100 , and the cyclone flow channel 201 is spirally wound around the outer circumference of the sewage outlet pipe 130 , and the top of the bronchial tube 210 is sealed and connected to the outer edge of the aeration ball membrane 230 .

[0026] Specifically, the airflow is introduced into the swirl flow channel 201 to generate a swirl motion of the airflow, and the airflow is dispersed and guided out on the surface of the aeration ball membrane 230 .

[0027] In this embodiment, the aeration ball membrane 230 is a hemispherical aeration mesh structure, and a plurality of densely distributed aeration micropores are provided on the surface of the aeration ball membrane 230, and the aeration micropores are nano-scale micropores.

[0028] Specifically, the airflow is guided out through the micropores on the surface of the aeration ball membrane 230 , and water is prevented from penetrating into the interior of the cyclone aeration seat 200 through the micropores.

[0029] In this embodiment, the number of separation tanks 100 is several. The gas is evenly distributed on the surface of the support frame 110. The gas distribution ring 220 is an annular structure and is sleeved on the outer circumference of the several separation tanks 100.

[0030] In this embodiment, the sewage inlet pipe 120 is located in the middle section of the separation tank 100 and is equidistant from the top of the sewage outlet pipe 130 and the bottom of the oil floating weir 300 . The sewage inlet pipe 120 is located horizontally tangentially to the surface of the separation tank 100 .

[0031] In this embodiment, the oil floating weir 300 is a bucket-shaped structure and is located at the same horizontal plane as the top of the separation tank 100 .

[0032] Specifically, in the sewage flow input at the sewage inlet pipe 120 port, the difference between the flow velocity and the flow velocity of the sewage outlet pipe 130 is the extraction rate of the upper floating oil liquid.

[0033] The working principle and use process of this utility model:

[0034] During the oil-water separation of sewage, the sewage inlet pipe 120 is connected to input sewage, and the high-pressure air pump is connected to input airflow through the air distribution ring 220 at the same time. The airflow is input through the bronchial tube 210 inside to generate cyclonic motion. The tangential input of airflow and water flow causes the sewage inside the separation tank 100 to produce cyclonic effect, and cooperates with the floating movement of bubbles to make the tiny bubbles move and disperse throughout the water, perform cyclonic and floating movements, and due to the mutual attraction between liquid molecules, a thin liquid film will form on the surface of the bubbles, and the substances are wrapped in the liquid film on the surface of the bubbles. The oil is tightly combined with the surface of the bubbles and floats to the liquid surface with the bubbles; the water in the center area of ​​the cyclone is discharged through the sewage outlet pipe 130, and after the new water flow fills the inside of the separation tank 100, the oil overflows through the floating oil weir 300 to perform water-liquid-oil separation.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sewage oil-water separator, characterized in that: include: A separation tank (100), a cyclone aeration seat (200) and an oil floating weir (300); a sewage inlet pipe (120) arranged tangentially is provided on the surface of the separation tank (100) for draining sewage; a support frame (110) is fixedly installed on the surface of the separation tank (100); the cyclone aeration seat (200) is fixedly installed on the bottom surface of the separation tank (100) and an aeration ball membrane (230) is fixedly installed on the surface of the cyclone aeration seat (200); a sewage outlet pipe (130) is fixedly installed on the bottom surface of the separation tank (100); a water collecting tray (131) is fixedly connected to the bottom end of the sewage outlet pipe (130); a cyclone flow channel (201) arranged tangentially is provided on the surface of the cyclone aeration seat (200); one end of the cyclone flow channel (201) is connected to a bronchus (210); and the ends of the bronchus (210) are fixedly connected to an air distribution ring (220).

2. A sewage oil-water separator according to claim 1, characterized in that: The sewage outlet pipe (130) is located on the central axis of the separation tank (100), and the cyclonic flow channel (201) is spirally connected to the outer periphery of the sewage outlet pipe (130), and the top end of the bronchial pipe (210) is sealed and connected to the outer edge of the aeration ball membrane (230).

3. The wastewater oil-water separator according to claim 1, characterized in that: The aeration ball membrane (230) is a hemispherical aeration mesh structure, and a plurality of densely distributed aeration micropores are provided on the surface of the aeration ball membrane (230), and the aeration micropores are nanoscale micropores.

4. The wastewater oil-water separator according to claim 1, characterized in that: The number of the separation tanks (100) is a plurality of gas tanks evenly distributed on the surface of the support frame (110), and the gas distribution ring (220) is an annular structure and is sleeved on the outer periphery of the plurality of separation tanks (100).

5. The wastewater oil-water separator according to claim 1, characterized in that: The sewage inlet pipe (120) is located in the middle section of the separation tank (100) and is equidistant from the top of the sewage outlet pipe (130) and the bottom surface of the oil floating weir (300). The sewage inlet pipe (120) is located in the horizontal tangential direction of the surface of the separation tank (100).

6. The wastewater oil-water separator according to claim 1, characterized in that: The floating oil weir (300) is in a bucket-shaped structure and is located at the same horizontal plane as the top of the separation tank (100).

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