CN213569806U - Secondary rotational flow air-flotation sewage treatment device - Google Patents
Secondary rotational flow air-flotation sewage treatment device Download PDFInfo
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- CN213569806U CN213569806U CN202022493447.0U CN202022493447U CN213569806U CN 213569806 U CN213569806 U CN 213569806U CN 202022493447 U CN202022493447 U CN 202022493447U CN 213569806 U CN213569806 U CN 213569806U
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Abstract
The utility model relates to a sewage treatment technical field specifically discloses a second grade whirl air supporting sewage treatment plant for rely on whirl and air supporting to act on the suspended solid in the de-aeration sewage, include: the axis of the tank body is vertically arranged; the water inlet is arranged on the side wall of the tank body, so that sewage enters the tank body along the tangential direction of the tank body; the spiral lifting plate is arranged on the inner wall of the tank body and is positioned below the water inlet; the conical table is arranged at the bottom in the tank body; the inner cylinder is coaxially arranged in the tank body, so that a cavity is formed between the inner cylinder and the tank body, and the inner cylinder is positioned above the conical table and is communicated with the outside through a first overflow pipe at the top. The sewage treatment device has the advantages that the sewage is divided into two stages for treatment in the tank body by the arrangement of the inner cylinder, the sewage is treated in the strong cyclone area to remove suspended matters with large particle sizes, and then the remaining small suspended matters with large particle sizes and the large suspended matters with small particle sizes are removed in the weak cyclone area, so that the sewage treatment efficiency of the air floatation device is improved.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to a secondary cyclone air-flotation sewage treatment device.
Background
The cyclone flotation device combines the cyclone separation technology and the air flotation technology to be used for removing suspended solids in sewage, and is concrete, the cyclone separation technology is that the centrifugal force that utilizes the whirl to produce separates the suspended solids that aquatic and water density are different, the air flotation technology is then little based on micro-bubble density, the characteristics of easy come-up, utilize the bubble to carry the separation of attaching suspended solids come-up realization suspended solids and water, and the cyclone flotation device can be at weak whirl in-process, when accelerating the suspended solids from the aquatic separation, strengthen the suspended solids and attach on the bubble, improve sewage treatment efficiency. However, in practical application of the cyclone flotation device, since suspended matters contained in sewage are various and the density, the particle size, the mass and the like are distributed in a large data range, the existing cyclone flotation device can only control the speed of the cyclone and the size of the bubbles to separate a part of suspended matters distributed in a small range in the sewage, such as the density, the particle size, the mass and the like, and the sewage treatment efficiency is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the suspended solid scope in the separation sewage that prior art exists is little, sewage treatment efficiency is low, this application provides a second grade whirl air supporting sewage treatment plant.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
a secondary cyclone air-flotation sewage treatment device for removing suspended matters in sewage by means of cyclone and air-flotation, comprising: the axis of the tank body is vertically arranged; the water inlet is arranged on the side wall of the tank body, so that sewage enters the tank body along the tangential direction of the tank body; the spiral lifting plate is arranged on the inner wall of the tank body and is positioned below the water inlet; the conical table is arranged at the bottom in the tank body; the inner cylinder is coaxially arranged in the tank body, so that a cavity is formed between the inner cylinder and the tank body, the inner cylinder is positioned above the conical table, and the top of the inner cylinder is provided with a first overflow pipe communicated with the outside; and the water gap is positioned at the bottom of the tank body and used for discharging the treated sewage.
The air floatation technology is a common technical means for treating suspended matters in sewage, and particularly utilizes a large number of micro bubbles to capture and adsorb the suspended matters in the sewage, and the suspended matters are enriched on the surface of the sewage along with the floating of the bubbles, so that the effect of solid-liquid separation is achieved, and the content of the suspended matters in the sewage is reduced. Set up the water inlet along the tangential of jar body in this application, make sewage when getting into jar internal portion, the tangential entering along jar body, thereby possess the initial condition at jar internal formation whirl, this application utilizes whirl technique and air supporting technique to combine together, on the one hand, the centrifugal force that enables the whirl production at first separates out partly big particle diameter granule and oil drip etc. make it along with ascending whirl come-up, on the other hand makes the whirl increase bubble of sewage at jar internal formation collide with aquatic suspended solid and adsorption effect, for simple air supporting technique, same bubble adsorbs more suspended solids easily in the whirl air supporting technique, reach higher sewage treatment efficiency.
In addition, the spiral-lift plate in this application set up in the below of water inlet makes sewage get into jar body after keep forming the ascending motion state of whirl along jar internal wall, reduces the axial decay effect of whirl that factors such as gravity caused to a certain extent. Similarly, the conical table arranged at the bottom of the tank body can slow down the attenuation of the rotational flow of the sewage at the bottom through the conical surface of the conical table, so that the sewage at the bottom can keep weak rotational flow, and the effect of capturing and adsorbing suspended matters by bubbles is promoted.
It is worth to be noted that, as the rotational flow of the sewage is attenuated in the radial direction, the inner cylinder arranged in the tank body can divide the interior of the tank body, so that the sewage close to the center forms an independent area in the inner cylinder relative to the sewage close to the inner wall of the tank body. Specifically, sewage in a cavity between the outer wall of the inner cylinder and the inner wall of the tank body keeps strong rotational flow, so that suspended matters with large particle sizes are more influenced by centrifugal force and float upwards after being separated from water; the sewage in the inner cylinder keeps relatively weak rotational flow, so that the residual large-particle-size suspended matters in the sewage are separated by virtue of centrifugal force, and meanwhile, the micro suspended matters are trapped and adsorbed by bubbles and float on the surface of the sewage, or the inner cylinder is almost free of rotational flow and only used for separating the micro suspended matters. Meanwhile, the top of the inner barrel is independently connected with the overflow pipe to discharge bubbles and suspended matters accumulated in the inner barrel on the surface of sewage, so that the isolation between the inner side and the outer side of the inner barrel is enhanced, the bubbles and the suspended matters are prevented from being separated from each other due to the interference formed at the top after the cyclone separation, and the effect and the purification efficiency of sewage solid-liquid separation are ensured.
Furthermore, a flow guide part is arranged on the conical table, the flow guide part is positioned in the inner cylinder and extends along the height direction of the inner cylinder, and the flow guide part is in an inverted conical shape. Because sewage is more weak at the whirl of jar body bottom, sewage does not have the whirl hardly in the in-process of upward movement in the inner tube, in order to make sewage keep the whirl of certain intensity in the inner tube, sets up the water conservancy diversion spare of back taper in this scheme inside the inner tube. It should be noted that the height of the flow guide member can determine the range of the swirling flow in the inner cylinder, for example, according to the composition of suspended matter in the sewage and the treatment effect of the outer side of the inner cylinder, if the sewage in the inner cylinder also contains a large number of large-particle-size particles and oil drops, the total height of the flow guide member can be set high, so that the sewage keeps a swirling flow with certain strength in the inner cylinder, and the treatment effect of the large-particle-size particles and the oil drops in the sewage is enhanced. If most suspended solids just rely on the air supporting effect to realize solid-liquid separation in the sewage in the inner tube, then the height of water conservancy diversion piece can set up lowly for the whirl attenuates gradually to disappearing when sewage upward movement, and weak whirl is favorable to the absorption of small suspended solids, can improve the treatment effect to small suspended solids.
Furthermore, a return pipe is arranged at the lower part of the tank body, and sewage at the lower part of the tank body is returned into the tank body through the return pipe. The return pipe can make the comparatively limpid sewage after the suspension is got rid of to jar body lower part flow back to jar body once more, mixes with the original sewage that contains the bubble in jar body, makes the bubble once more to the suspension entrapment in the aquatic and adsorbs, further removes the suspended substance in the sewage.
Furthermore, the return pipe is communicated with the chamber in the inner cylinder, so that the returned sewage enters from the lower part of the inner cylinder along the tangential direction of the side wall of the inner cylinder. Suspended matters in the backflow sewage are obviously reduced relative to the sewage which enters the tank body for the first time, the backflow sewage is more suitable for directly entering the inner tank for treatment, the separation of large-particle-size suspended matters outside the inner tank is avoided from being interfered, and the backflow sewage enters the inner tank along the tangential direction of the inner tank and is also favorable for forming rotational flow in the inner tank.
Furthermore, a check valve is arranged on the return pipe.
Further, a second overflow pipe is arranged at the top of the tank body and communicated with a cavity between the inner wall of the tank body and the outer wall of the inner cylinder. The second overflow pipe is used for discharging the bubble and the suspended solid on sewage surface in this scheme, avoids additionally setting up and scrapes the foam device.
Further, the bottom of the tank body is arc-shaped, and the water outlet is formed in the center of the bottom of the tank body below the conical table.
Furthermore, the top of the inner cylinder is conical. The top of the cone is favorable for pushing suspended matters enriched by bubbles on the surface of the sewage to be discharged out of the tank body through the first overflow pipe.
The beneficial effect of this application: the sewage treatment device has the advantages that the sewage is divided into two stages for treatment in the tank body by means of the arrangement of the inner cylinder, the sewage is firstly treated in a strong cyclone area to remove suspended matters with large particle sizes, then remaining small suspended matters with large particle sizes and most suspended matters with small particle sizes are removed in a weak cyclone area in the inner cylinder, and the sewage treatment efficiency of the air floatation device is improved through the secondary treatment system constructed in one tank body.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an external structural schematic of the present application;
FIG. 2 is a schematic view of the external structure from another perspective of the present application;
FIG. 3 is a schematic cross-sectional view of the present application taken along a vertical plane;
FIG. 4 is a schematic view of the internal structure of the present application after hiding the external structures such as the can body;
in the figure: 1-tank body; 2-a water inlet; 3-a first overflow pipe; 4-a second overflow pipe; 5-a return pipe; 6-water outlet; 7-a flow guide part; 8-a spiral rising plate; 9-a conical table; 10-inner cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1:
a two-stage cyclone air-flotation sewage treatment apparatus as shown in fig. 1 to 3 for removing suspended matters in sewage by means of cyclone and air-flotation, comprising: the tank comprises a tank body 1, wherein the axis of the tank body 1 is vertically arranged; the water inlet 2 is arranged on the side wall of the tank body 1, so that sewage enters the tank body 1 along the tangential direction of the tank body 1; the spiral lifting plate 8 is arranged on the inner wall of the tank body 1 and is positioned below the water inlet 2; the conical table 9 is arranged at the bottom in the tank body 1; the inner cylinder 10 is coaxially arranged in the tank body 1, so that a cavity is formed between the inner cylinder 10 and the tank body 1, the inner cylinder 10 is positioned above the conical table 9, and the top of the inner cylinder is provided with a first overflow pipe 3 communicated with the outside; and the water gap 6 is positioned at the bottom of the tank body 1 and is used for discharging the treated sewage.
The working principle is as follows:
according to the basic principle of the air flotation tank, sewage dissolved with pressurized air and sewage to be treated enter the tank body 1 along the tangential direction of the tank body 1 after being mixed at the water inlet 2, the movement direction of the sewage and the inner wall of the tank body 1 keep the sewage in a rotational flow state, a small section of spiral lifting plate 8 below the water inlet 2 is arranged along the rotational flow direction to block the initial downward trend of the sewage and spirally lift the sewage to keep the rotational flow of the sewage in the tank body 1. The inner cylinder 10 arranged in the tank body 1 divides the tank body 1 into two chambers which are communicated with each other at the bottom and are arranged at the inner side and the outer side of the inner cylinder 10, in the chamber between the outer wall of the inner cylinder 10 and the inner wall of the tank body 1, sewage keeps stronger rotational flow, large suspended matters are separated under the action of centrifugal force and adsorbed on bubbles to float upwards, and a small amount of small suspended matters are also trapped and adsorbed by the bubbles. Meanwhile, sewage enters a chamber on the inner side of the inner cylinder 10 from the bottom, and due to the axial attenuation and the radial attenuation of the rotational flow and the action of the conical table 9, the sewage on the bottom on the inner side of the inner cylinder 10 has a weaker rotational flow, the upward rotational flow is gradually weakened to disappear, and in the chamber, a large amount of micro suspended matters are trapped and adsorbed by bubbles and separated from the sewage.
Preferably, the top of the inner cylinder 10 in this embodiment may be tapered to facilitate pushing the suspension enriched by bubbles on the surface of the sewage out of the tank 1 through the first overflow pipe 3. In addition, as shown in fig. 1, a second overflow pipe 4 for discharging suspended matters floating on the surface at the top of the tank 1 is arranged at the top of the tank 1, and the second overflow pipe 4 is communicated with a chamber between the inner wall of the tank 1 and the outer wall of the inner cylinder 10. Combine the setting of first overflow pipe 3, the suspended solid on sewage surface relies on first overflow pipe 3 and second overflow pipe 4 respectively to discharge in the cavity of the inside and outside both sides of inner tube 10, and the mutual independence of the inside and outside both sides of jar body 1 top keeps the inner tube, avoids the suspended solid of surface adsorption on the bubble to be strikeed by the whirl of different speeds and destroys.
Example 2:
in this embodiment, further optimization and limitation are performed on the basis of embodiment 1.
The conical table 9 is provided with a flow guide part 7, the flow guide part 7 is positioned in the inner cylinder 10 and extends along the height direction of the inner cylinder 10, and the flow guide part 7 is in an inverted conical shape.
The guide member 7 is used for keeping the sewage in the inner cylinder 10 in a rotational flow with certain strength, and whether the guide member 7 is arranged or not and the height of the guide member 7 depend on the composition of suspended matters in the sewage in practical application and the treatment effect of the sewage in a cavity between the outer wall of the inner cylinder 10 and the inner wall of the tank body 1. Specifically, for example, the height of the flow guide 7 can determine the range of the swirling flow in the inner cylinder 10, and if the sewage in the inner cylinder 10 also contains a large number of large-particle-size particles and oil drops, the total height of the flow guide 7 can be set high, so that the sewage keeps a certain strength of swirling flow in the inner cylinder 10, and the treatment effect on the large-particle-size particles and the oil drops in the sewage is enhanced. If most suspended solids in the sewage in the inner cylinder 10 only depend on the air flotation effect to realize solid-liquid separation, then the height of water conservancy diversion piece 7 can set up lowly for whirl attenuates gradually to disappearing when sewage upward movement, and weak whirl is favorable to the absorption of small suspended solids, can improve the treatment effect to small suspended solids.
Example 3:
in this embodiment, further optimization and limitation are performed on the basis of embodiment 1 or 2.
As shown in fig. 1-2, a return pipe 5 is arranged at the lower part of the tank body 1, and the return pipe 5 returns the sewage at the lower part of the tank body 1 to the tank body 1. The return pipe 5 is provided with a one-way valve.
The working principle is as follows:
set up back flow pipe 5 on jar body 1 in this embodiment, when still containing a large amount of suspended solids in the sewage that the device was once handled in this application, back flow pipe 5 can make jar body 1 lower part get rid of comparatively limpid sewage after the suspended solids flow back to jar body 1 once more in, mix with the sewage that originally contained the bubble in jar body 1, make the bubble adsorb the suspended solids entrapment in the aquatic again, further remove the suspended substance in the sewage. In addition, the preferable scheme of this embodiment is to connect the return pipe 5 with the chamber inside the inner cylinder 10, so that the returned sewage enters from the lower part of the inner cylinder 10 along the tangential direction of the side wall of the inner cylinder 10. As the suspended matters in the returned sewage are obviously reduced relative to the sewage which enters the tank body 1 for the first time, the returned sewage is more suitable for directly entering the inner cylinder 10 for treatment, the separation of the suspended matters with large particle size outside the inner cylinder 10 is avoided from being interfered, and the returned sewage enters along the tangential direction of the inner cylinder 10 and is also favorable for forming rotational flow in the inner cylinder 10.
It is also worth mentioning that the return pipe 5 also has the function of controlling the level of the water inside the tank 1. The water level of the tank body 1 is controlled to ensure that suspended matters which float on the water surface and are enriched by bubbles can be pushed out of the first overflow pipe 3 and the second overflow pipe 4 by sewage in the tank body 1. Meanwhile, the operation of the return pipe 5 may be continuous or intermittent, so that the flow rate of the return pipe 5 is controlled according to the water level. The operating state of the return pipe 5 can be controlled by a separately provided control system and a non-return valve on the return pipe 5.
Example 4:
the present embodiment is further optimized and limited based on the above embodiments.
As shown in fig. 1-2, the bottom of the tank body 1 is arc-shaped, and the water outlet 6 is arranged at the center of the bottom of the tank body 1 below the conical table 9. The arc-shaped bottom is beneficial to the collection and discharge of a small amount of sediments in the sewage, and the influence of the sediments accumulated at the dead angle of the tank body 1 on the sewage treatment effect is avoided.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. The utility model provides a second grade whirl air supporting sewage treatment plant for rely on whirl and air supporting to act on the suspended solid in the de-aeration, its characterized in that: the method comprises the following steps:
the tank body (1), wherein the axis of the tank body (1) is vertically arranged;
the water inlet (2) is arranged on the side wall of the tank body (1) to ensure that sewage enters the tank body (1) along the tangential direction of the tank body (1);
the spiral lifting plate (8) is arranged on the inner wall of the tank body (1) and is positioned below the water inlet (2);
the conical table (9) is arranged at the bottom in the tank body (1);
the inner cylinder (10) is coaxially arranged in the tank body (1), so that the tank body (1) is divided into two cavities with communicated bottoms and respectively positioned at the inner side and the outer side of the inner cylinder (10), the inner cylinder (10) is positioned above the conical table (9), and the top of the inner cylinder is provided with a first overflow pipe (3) communicated with the outside;
and the water outlet (6) is positioned at the bottom of the tank body (1) and is used for discharging the treated sewage.
2. The secondary cyclone air-flotation sewage treatment device of claim 1, which is characterized in that: be equipped with water conservancy diversion spare (7) on toper platform (9), water conservancy diversion spare (7) are located inner tube (10) inside and extend along inner tube (10) direction of height, water conservancy diversion spare (7) are the conical shape of inversion.
3. The secondary cyclone air-flotation sewage treatment device of claim 1, which is characterized in that: the lower part of the tank body (1) is provided with a return pipe (5), and the return pipe (5) returns sewage at the lower part of the tank body (1) to the tank body (1).
4. The secondary cyclone air-flotation sewage treatment device of claim 3, which is characterized in that: the return pipe (5) is communicated with a chamber in the inner cylinder (10) so that returned sewage enters from the lower part of the inner cylinder (10) along the tangential direction of the side wall of the inner cylinder (10).
5. The secondary cyclone air-flotation sewage treatment device of claim 4, which is characterized in that: the return pipe (5) is provided with a one-way valve.
6. The secondary cyclone air-flotation sewage treatment device of claim 1, which is characterized in that: the top of the tank body (1) is provided with a second overflow pipe (4), and the second overflow pipe (4) is communicated with a cavity between the inner wall of the tank body (1) and the outer wall of the inner cylinder (10).
7. The secondary cyclone air-flotation sewage treatment device of claim 1, which is characterized in that: the bottom of the tank body (1) is arc-shaped, and the water outlet (6) is arranged at the center of the bottom of the tank body (1) below the conical table (9).
8. The secondary cyclone air-flotation sewage treatment device according to claim 2, which is characterized in that: the top of the inner cylinder (10) is conical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022493447.0U CN213569806U (en) | 2020-11-02 | 2020-11-02 | Secondary rotational flow air-flotation sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022493447.0U CN213569806U (en) | 2020-11-02 | 2020-11-02 | Secondary rotational flow air-flotation sewage treatment device |
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| CN213569806U true CN213569806U (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115477358A (en) * | 2022-08-05 | 2022-12-16 | 中国石油化工股份有限公司 | Secondary separation device, multistage separator, separation system and separation method for oily sewage |
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2020
- 2020-11-02 CN CN202022493447.0U patent/CN213569806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115477358A (en) * | 2022-08-05 | 2022-12-16 | 中国石油化工股份有限公司 | Secondary separation device, multistage separator, separation system and separation method for oily sewage |
| CN115477358B (en) * | 2022-08-05 | 2024-01-16 | 中国石油化工股份有限公司 | Secondary separation device, multistage separator, separation system and separation method for oily sewage |
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