Multidirectional entrainment air floatation tank

Abstract

The utility model provides a multidirectional entrainment air floatation tank, which comprises an air floatation tank body, a dissolved air pipeline system and a slag scraper, the air floatation tank body comprises at least two separation areas which are arranged at intervals, a middle release area is arranged between the adjacent separation areas, two side release areas are respectively arranged on the outer side of the separation area on the outermost side, and the two side release areas are respectively arranged on the outer side of the separation area on the outermost side. The bottoms of the two side release areas and the middle release area are water distribution areas, and water collection assemblies are arranged in the separation areas; one end of the air floatation tank body is provided with a water distribution area, the water distribution area is respectively communicated with each water distribution area, and the other end of the air floatation tank body is sequentially provided with a clear water area and a water outlet area which are communicated with each other. According to the air floatation tank, the structure of the air floatation tank is optimized, the separation areas and the release areas are arranged at intervals, and meanwhile, sewage and air-dissolved water are mixed in each release area, so that the treatment capacity and the treatment efficiency of the sewage are improved; the contact area of the air-dissolved water and the sewage can be enlarged, so that the air-dissolved water and the sewage are fully and uniformly mixed and then enter a separation area, and the separation efficiency and effect of impurities in the sewage are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air flotation, in particular to a multi-directional scroll air flotation tank. Background Art

[0002] Dissolved air flotation is one of the most commonly used equipment in the field of solid-liquid separation in water treatment. Air is dissolved in water by pressurization, and then released to normal pressure. The air dissolved in water precipitates from the water in the form of tiny bubbles, floating the suspended particles in the water on the water surface, and then the suspended particles floating on the water surface are scraped away by a scraper, thereby achieving solid-liquid separation.

[0003] Common steel structure flotation on the market include horizontal flotation and shallow flotation. The dissolved air microbubbles in the separation zone gradually decrease from the water inlet to the outlet, resulting in a corresponding decrease in load. In addition, factors such as the high water flow rate in the separation zone have limited the load increase of traditional flotation. In recent years, the construction of steel concrete pools has been adopted to increase the surface load by reducing the length-to-width ratio, but it has mainly focused on water with low solid content. The promotion and use of complete sets of equipment is often limited by transportation restrictions.

[0004] In order to solve the defects of horizontal flotation and shallow flotation, the inventor proposed a semi-volume flotation tank (patent number: CN202221185708.5). However, the contact area between dissolved air water and sewage in this semi-volume flotation tank is small, resulting in poor impurity separation efficiency and effect. In addition, due to the limitations of water flow direction and the number of water collection pipes in the semi-volume flotation, the water collection capacity of the water collection pipe is relatively small. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a multi-directional volume flow flotation tank for solving the problems of small processing capacity and low processing efficiency of the semi-volume flotation tank in the prior art.

[0006] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a multi-directional vortex flotation tank, including a flotation tank body, a dissolved air pipeline system and a scraper, the flotation tank body includes at least two separation zones arranged at intervals, an intermediate release zone is provided between adjacent separation zones, and two side release zones are respectively provided on the outer side of the outermost separation zone, the two side release zones, the intermediate release zone and the separation zone are connected at the top, the bottom of the two side release zones and the intermediate release zone is a water distribution zone, and a water collection group is provided in the separation zone along its length direction. Parts; one end of the flotation tank body is provided with a water distribution area connected to the water inlet, and the water distribution area is respectively connected to each water distribution area; the other end of the flotation tank body is sequentially provided with a clean water area and a water outlet area connected to each other, the clean water area is connected to the water collection component, and the water outlet area is connected to the water outlet; the dissolved air pipeline system draws clean water from the clean water area to prepare dissolved air water, and releases it in the release areas on both sides and the middle release area; the scraper is installed above the flotation tank body, and the scraper is used to scrape away the scum on the surface to the scum collection area.

[0007] In one embodiment of the present invention, the water distribution area and the middle release area / the two side release areas are separated by a water distribution plate, and a plurality of through holes are evenly opened on the water distribution plate.

[0008] In one embodiment of the present invention, a plurality of flow stabilizing components are evenly spaced apart in the separation zone along its length direction, and the water collecting component is located below the flow stabilizing components.

[0009] In one embodiment of the utility model, a plurality of bucket-shaped sedimentation areas are provided at the bottom of the separation area, and a sewage outlet is provided at the bottom of the sedimentation area.

[0010] In an embodiment of the present invention, the inclination angles of the inclined surfaces on both sides of the precipitation area are consistent.

[0011] In one embodiment of the present invention, the water collection component is located in the middle of the separation zone, and the water collection component is located a certain distance above the sedimentation zone.

[0012] In an embodiment of the present invention, the heights of the water collecting components are the same.

[0013] In one embodiment of the utility model, the dissolved gas pipeline system includes a suction pipeline connected to the clean water area, and a plurality of release pipelines connected to the middle release area and the release areas on both sides, and the ends of the release pipelines are connected to releasers.

[0014] In one embodiment of the present invention, the scum collection area is located between the separation area and the clean water area, the top of the scum collection area is connected to the separation area, and the scum collection area is separated from the clean water area and is not connected.

[0015] In one embodiment of the present invention, a blocking plate is provided at the entrance of the scum collecting area to prevent the scum from re-entering the separation area.

[0016] As described above, the multi-directional vortex flotation tank of the utility model has the following beneficial effects:

[0017] 1. The utility model optimizes the structure of the flotation tank, arranges the separation zone and the release zone at intervals, and mixes sewage and dissolved air water in each release zone, thereby improving the sewage treatment capacity and treatment efficiency; and can increase the contact area between dissolved air water and sewage, so that the dissolved air water and sewage are fully mixed and evenly mixed before entering the separation zone, thereby improving the separation efficiency and effect of impurities in sewage.

[0018] 2. The structure of this flotation tank is simpler and more optimized, with higher space utilization and better treatment effect. It is suitable for situations with large treatment volume, and maintenance and repair are simpler and more convenient.

[0019] 3. The utility model sets the inclination angles of the inclined surfaces on both sides of the sedimentation area to be consistent, so that the reaction forces of the inclined surfaces on both sides to the water flow are consistent, thereby reducing water flow fluctuations and reducing the disturbance of the water flow to the scum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the multi-directional vortex flotation tank disclosed in the embodiment of the utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the cross section along the AA direction.

[0022] Figure 3 for Figure 1 Schematic diagram of the cross section along the BB direction.

[0023] Figure 4 for Figure 1 Schematic diagram of the cross section along the CC direction.

[0024] Component number description

[0025] 100. Flotation tank body; 101. Water distribution area; 102. Release areas on both sides; 103. Water distribution plate; 104. Middle release area; 105. Separation area; 106. Flow stabilization component; 107. Water collection component; 108. Scum collection area; 109. Clean water area; 110. Water outlet area; 111. Water inlet; 112. Water outlet; 113. Sedimentation area; 200. Dissolved air pipeline system; 201. Suction pipeline; 202. Release pipeline; 203. Releaser; 204. Water pump; 205. Dissolved air chamber; 300. Scum scraper. DETAILED DESCRIPTION

[0026] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] See also Figure 1 The utility model provides a multi-directional vortex flotation tank, including a flotation tank body 100 for treating sewage, a dissolved air pipeline system 200 for preparing dissolved air water so as to float suspended particles to the liquid surface, and a scraper 300 for scraping away scum floating on the water surface.

[0028] Reference Figure 1 and 4 The flotation tank body 100 includes two separation zones 105 arranged at intervals, a middle release zone 104 is provided between the two separation zones 105, and two side release zones 102 are provided outside the two separation zones 105, respectively. The two side release zones 102, the middle release zone 104 and the separation zone 105 are connected at the top, and the bottoms of the two side release zones 102 and the middle release zone 104 are water distribution zones, and a water collection component 107 is provided in the separation zone 105 along its length direction; the flotation tank body 100 A water distribution area 101 connected to a water inlet 111 is provided at one end thereof, and the water distribution area 101 is respectively connected to each water distribution area; a clean water area 109 and a water outlet area 110 are sequentially connected to each other at the other end of the flotation tank body 100; the clean water area 109 is connected to a water collection component 107, and the water outlet area 110 is connected to a water outlet 112; the dissolved air pipeline system 200 draws clean water from the clean water area 109 to prepare dissolved air water, and releases it in the release areas 102 on both sides and the middle release area 104.

[0029] The utility model optimizes the structure of the flotation tank, arranges the separation zone 105 and the release zone at intervals, thereby maximizing the area of ​​the release zone for mixing dissolved air water and sewage, thereby improving the sewage treatment capacity and treatment efficiency; and can increase the contact area between dissolved air water and sewage, so that the dissolved air water and sewage are fully mixed and then enter the separation zone 105, thereby improving the separation efficiency and effect of impurities in sewage.

[0030] Reference Figure 1 and 4 The water distribution area and the middle release area 104 / the release areas on both sides 102 are separated by a water distribution plate 103. A number of through holes are evenly opened on the water distribution plate 103, which can adjust the flow state of the water flow to make it more stable, so that the sewage is evenly distributed in the middle release area 104 and the release areas on both sides 102. The through hole is preferably a circular hole, and can also be a polygonal hole. In addition, since the water distribution area is located below the middle release area 104 and the release areas on both sides 102, the sewage flows from the water distribution area at the bottom into the middle release area 104 / the release areas on both sides 102, which can reduce the flow rate of the sewage and achieve energy dissipation.

[0031] Reference Figure 1 and 3 In each separation zone 105, a plurality of flow stabilizing components 106 are evenly spaced along the length direction thereof. The flow stabilizing components 106 can stabilize the liquid surface state, thereby reducing the disturbance to the floating scum. The flow stabilizing components 106 are preferably baffles, and a plurality of baffles are evenly spaced and fixed on the pool walls on both sides of each separation zone 105, dividing the separation zone 105 into a plurality of areas, thereby reducing the flow velocity in the separation zone 105 and achieving a steady flow. Furthermore, the water collecting component 107 is arranged below the flow stabilizing component 106, so that the water flows through the steady flow of the flow stabilizing component 106 before entering the water collecting component 107.

[0032] Reference Figure 3 and 4 At the bottom of the separation zone 105, there are several sedimentation zones 113 for discharging the sludge that sinks in the sewage. The sedimentation zones 113 are bucket-shaped, and there are drainage outlets at the bottom of the sedimentation zones 113, so that the sludge can be discharged from the drainage outlets at the bottom of the sedimentation zones 113 along the slope. To ensure the stability of the water flow, the slopes on both sides of the sedimentation zone 113 have the same inclination angle, so that the reaction force of the slopes on both sides on the water flow is consistent, thereby reducing the fluctuation of the water flow and reducing the disturbance of the water flow to the scum.

[0033] To ensure that the water collecting component 107 can better collect clean water, the water collecting component 107 is located in the middle of the separation area 105, and the water collecting component 107 is located a certain distance above the sedimentation area 113, so that the water collecting component 107 is located on the path of the annular flow direction and can better collect clean water.

[0034] Reference Figure 1 and 2 The dissolved air pipeline system 200 includes a suction pipeline 201 connected to the clean water area 109 for sucking clean water in the clean water area 109, and a plurality of release pipelines 202 connected to the middle release area 104 and the release areas 102 on both sides for injecting dissolved air into the sewage, and the ends of the release pipelines 202 are connected to releasers 203. Among them, a water pump 204 for pumping clean water from the clean water area 109 is provided on the suction pipeline 201, and a dissolved air cavity 205 for adding pressurized air into the clean water to prepare dissolved air is provided between the suction pipeline 201 and the release pipeline 202. Further, the release pipelines 202 are evenly arranged on the top of the pool body of the middle release area 104 and the release areas 102 on both sides, and are inserted into the middle release area 104 and the release areas 102 on both sides to a certain depth.

[0035] Reference Figure 3The scraper 300 is installed above the flotation tank 100 to scrape the scum on the surface of the liquid to the scum collection area 108. The scum collection area 108 is located between the separation area 105 and the clean water area 109. The top of the scum collection area 108 is connected to the separation area 105, and the scum collection area 108 is separated from the clean water area 109 and is not connected; at the same time, a blocking plate is provided at the entrance of the scum collection area 108 to prevent the scum from re-entering the separation area 105.

[0036] When in use, sewage flows into the water distribution area 101 from the water inlet 111, dissipates energy in the water distribution area 101, and then flows into the release areas 102 on both sides and the middle release area 104 under the distribution of the water distribution area 101. The sewage is evenly distributed in the release areas 102 on both sides and the middle release area 104 through the water distribution plates 103 arranged in the release areas 102 on both sides and the middle release area 104 through the through holes; the dissolved air pipeline system 200 extracts clean water from the clean water area 109 to prepare dissolved air water, and releases it in the releasers 203 in the release areas 102 on both sides and the middle release area 104, generating a large number of tiny bubbles, which are filled with After being mixed, the water flows to the separation area 105, and the flocs slowly float to the liquid surface in the separation area 105. The water needs to pass through the flow stabilizing component 106 before flowing into the water collecting component 107, which can stabilize the liquid surface and reduce the disturbance to the floating scum, so that the scraper 300 can better scrape the scum on the surface to the scum collecting area 108; the water collecting component 107 is fixed to a specific size above the slope of the pool body near the sedimentation area 113 to obtain a better water collecting effect. The water flows through the water collecting component 107 and flows into the clean water area 109, part of which flows to the water outlet area 110, and part of it is sucked away by the dissolved air pipeline system 200, thereby forming a cycle.

[0037] In summary, the utility model optimizes the structure of the flotation tank, arranges the separation zone and the release zone at intervals, and mixes sewage and dissolved air water in each release zone, thereby improving the sewage treatment capacity and treatment efficiency; and can increase the contact area between dissolved air water and sewage, so that dissolved air water and sewage are fully mixed and then enter the separation zone, thereby improving the separation efficiency and effect of impurities in sewage. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0038] Among them, the terms such as "upper", "lower", "left", "right", "front", "back", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A multi-directional vortex flotation tank, characterized in that: include: An air flotation pool body, the air flotation pool body comprising at least two separation zones arranged at intervals, an intermediate release zone is provided between adjacent separation zones, and release zones on both sides are provided on the outer sides of the outermost separation zone, the release zones on both sides, the intermediate release zone and the separation zone are connected at the top, the bottoms of the release zones on both sides and the intermediate release zone are water distribution zones, and a water collection component is provided in the separation zone along its length direction; a water distribution zone connected to a water inlet is provided at one end of the air flotation pool body, and the water distribution zone is respectively connected to each water distribution zone, and a clean water zone and a water outlet zone are sequentially provided at the other end of the air flotation pool body, the clean water zone is connected to the water collection component, and the water outlet zone is connected to the water outlet; A dissolved air pipeline system, wherein the dissolved air pipeline system extracts clean water from the clean water area to prepare dissolved air water, and releases the dissolved air water in the release areas on both sides and the middle release area; A scraper is installed above the flotation tank body and is used to scrape away the scum on the surface to the scum collection area.

2. A multi-directional vortex flotation tank according to claim 1, characterized in that: The water distribution area and the middle release area / the release areas on both sides are separated by a water distribution plate, and a plurality of through holes are evenly opened on the water distribution plate.

3. A multi-directional vortex flotation tank according to claim 1, characterized in that: A plurality of flow stabilizing components are evenly spaced in the separation zone along its length direction, and the water collecting component is located below the flow stabilizing components.

4. A multi-directional vortex flotation tank according to claim 1, characterized in that: A plurality of bucket-shaped sedimentation areas are arranged at the bottom of the separation area, and a sewage outlet is arranged at the bottom of the sedimentation area.

5. A multi-directional vortex flotation tank according to claim 4, characterized in that: The inclination angles of the inclined surfaces on both sides of the precipitation zone are consistent.

6. A multi-directional vortex flotation tank according to claim 4, characterized in that: The water collection component is located in the middle of the separation zone, and the water collection component is located a certain distance above the precipitation zone.

7. A multi-directional vortex flotation tank according to claim 6, characterized in that: The heights of the water collecting components are the same.

8. The multi-directional vortex flotation tank according to claim 1, characterized in that: The dissolved gas pipeline system comprises a suction pipeline connected to the clean water area and a plurality of release pipelines connected to the middle release area and the release areas on both sides, and the ends of the release pipelines are connected to releasers.

9. The multi-directional vortex flotation tank according to claim 1, characterized in that: The scum collection area is located between the separation area and the clean water area. The top of the scum collection area is connected to the separation area, and the scum collection area is separated from the clean water area and is not connected.

10. A multi-directional vortex flotation tank according to claim 9, characterized in that: A blocking plate for blocking the scum from re-entering the separation zone is provided at the entrance of the scum collecting zone.

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