Integrated high-tower biological fluidized bed

Abstract

The utility model discloses an integrated high-tower biological fluidized bed which comprises a reaction tower, the reaction tower is hollow, an outer tower body is arranged on the outer side of the middle upper part of the reaction tower, a precipitation area is arranged between the outer tower body and the reaction tower, a water outlet weir plate is arranged on the upper part of the outer tower body, and a liquid inlet is formed in the bottom of the reaction tower; a circle of aerobic water outlet holes and a circle of sludge backflow holes are respectively formed in the outer wall of the middle upper part of the reaction tower from top to bottom, and the aerobic water outlet holes and the sludge backflow holes are communicated with the precipitation area; the interior of the reaction tower is divided into an upper aerobic region and a lower anoxic region, a plurality of vertical guide cylinders are arranged in the lower anoxic region, the upper parts of the guide cylinders extend into the upper aerobic region, and aerators are arranged in the upper parts of the guide cylinders. The integrated high-tower biological fluidized bed disclosed by the utility model is high in integration, can integrate aerobiotic, anoxic and sedimentation into a whole, adopts the structural design of the integrated high tower, occupies a small area, and saves the field.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, in particular to an integrated high tower biological fluidized bed. Background Art

[0002] With the rapid development of society and industry, the components of various types of wastewater are becoming more and more complex, and the water volume is also increasing sharply; moreover, the country and the people are paying more and more attention to environmental protection issues, the environmental protection requirements are getting higher and higher, and the requirements for wastewater treatment technology are also getting higher and higher. In the fields of sewage treatment and environmental protection technology, for biodegradable domestic sewage and industrial wastewater, the mainstream treatment method is still biological treatment.

[0003] For example, the Chinese patent of the prior art CN206616063U discloses a sewage biological treatment device, which includes a high-concentration sewage collection tank, a clean water recovery tank and a dosing device, and also includes a baffle sewage processor separated by a partition board and having at least two sewage treatment areas. The sewage input end of the baffle sewage processor is communicated with the high-concentration sewage collection tank, and its output end is communicated with the clean water recovery tank; a dosing device is arranged in each sewage treatment area, and the dosing device includes a funnel, a conveying cylinder, a valve and a stirring component. The funnel is communicated with the conveying cylinder, the conveying cylinder is connected to the sewage treatment area, the valve is installed on the conveying cylinder, and the stirring component is installed in the conveying cylinder.

[0004] Conventional sewage biological treatment includes anoxic tanks, aerobic tanks, secondary sedimentation tanks, etc. There are many structures and the floor area is relatively large, resulting in high operating costs and expensive maintenance costs. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide an integrated high tower biological fluidized bed, which has a simple structure and is convenient to install.

[0006] To achieve the above purpose, the utility model adopts the following content:

[0007] The integrated high tower biological fluidized bed provided by the utility model includes a reaction tower, which is hollow inside, wherein:

[0008] An outer tower body is arranged on the outer side of the middle and upper part of the reaction tower. The top of the outer tower body is open and higher than the top of the reaction tower. The space between the outer tower body and the reaction tower serves as a sedimentation area. An effluent weir plate is arranged at the upper part of the outer tower body, and a liquid inlet is arranged at the bottom of the reaction tower;

[0009] On the outer wall of the middle and upper part of the reaction tower, a ring of aerobic effluent holes and sludge return holes are formed up and down respectively, and both the aerobic effluent holes and the sludge return holes communicate with the sedimentation area;

[0010] The interior of the reaction tower is divided into an upper aerobic region and a lower anoxic region. In the lower anoxic region, a number of vertically arranged draft tubes are provided through fixed supports. The upper part of the draft tube extends into the upper aerobic region, and an aerator is arranged inside the upper part of the draft tube.

[0011] According to the integrated high tower biological fluidized bed provided by the present invention, an annular baffle extending downward is further provided on the outer wall of the middle and upper part of the reaction tower. A spacing is left between the baffle and the reaction tower, and the upper end of the baffle is higher than the aerobic water outlet hole. The annular baffle further realizes the water drainage function of the aerobic water outlet hole.

[0012] According to the integrated high tower biological fluidized bed provided by the present invention, the top plate of the reaction tower is provided with an exhaust pipe extending outward. In this way, covering the top of the reaction tower can prevent the odor gas generated during the biochemical process from escaping wantonly and polluting the air environment. The exhaust gas generated during the biochemical process is collected through the exhaust pipe and discharged to the external exhaust gas treatment system for treatment.

[0013] According to the integrated high tower biological fluidized bed provided by the present invention, the top plate of the reaction tower is provided with a maintenance reserved opening. The maintenance reserved opening is provided to facilitate the maintenance work of the internal devices of the reaction tower by maintenance personnel.

[0014] According to the integrated high tower biological fluidized bed provided by the present invention, a waterproof ring is provided at the top end of the outer tower body. The waterproof ring prevents rainwater from seeping downward into the insulation layer wrapped outside the outer tower body when it rains.

[0015] According to the integrated high tower biological fluidized bed provided by the present invention, the height of the water outlet weir plate is higher than the height of the aerobic water outlet hole. So that the upper clear liquid in the precipitation area overflows through the water outlet weir plate.

[0016] The integrated high tower biological fluidized bed of the present invention has a simple structure and reasonable design. Compared with the prior art, the present invention has the following technical effects:

[0017] 1. The present application adopts the structural design of an integrated high tower, which can reach up to 20 meters at most, has a small floor area, and saves space;

[0018] 2. The integrated high tower biological fluidized bed of the present application has a high degree of integration and can integrate aerobic, anoxic, and precipitation into one;

[0019] 3. In the present application, by installing the aerator in the upper part of the draft tube and utilizing the circulation effect inside and outside the draft tube, the residence time of oxygen is extended, so that oxygen is fully mixed with the mud-water mixture; through the self-pressurizing effect of the special structure of the reaction tower, the oxygen dissolution efficiency is increased, and the oxygen utilization rate is greatly improved;

[0020] 4. This application enhances the internal circulation in the reaction tower through a draft tube, enabling the mud-water mixture to be in a fluidized state. There is no need for an external reflux system, and the aeration blower driving the aerator can use an atmospheric pressure blower, saving energy consumption.

[0021] 5. By means of bottom inlet, this application utilizes the upward flow velocity of the influent itself and the lifting effect of the draft tube to fully and evenly mix the influent with the activated sludge, improving the utilization rate of the activated sludge, reducing the amount of excess sludge, and decreasing the operating cost of sludge disposal.

[0022] 6. Both an anoxic zone and an aerobic zone are present inside the reaction tower of this application. Thus, nitrification and denitrification are simultaneously achieved inside the reaction tower to meet the nitrogen removal requirements.

[0023] 7. This application can continuously intake and discharge water. Except for the influent pump and blower used, no other power equipment is required. It has a high degree of automation, simple operation, and low operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following further elaborates on the specific implementation manners of the present utility model in conjunction with the accompanying drawings.

[0025] Figure 1 FIG. is the overall structural schematic diagram of the integrated high tower biological fluidized bed according to the embodiment of the present utility model;

[0026] Figure 2 FIG. is the overall schematic diagram of the integrated high tower biological fluidized bed in the internal lower anoxic region according to the embodiment of the present utility model;

[0027] Figure 3 FIG. is the distribution schematic diagram of several draft tubes inside the integrated high tower biological fluidized bed according to the embodiment of the present utility model;

[0028] Figure 4 FIG. is the top view schematic diagram of the integrated high tower biological fluidized bed according to the embodiment of the present utility model;

[0029] 1 - reaction tower, 2 - outer tower body, 3 - draft tube, 4 - aerator; 11 - aerobic effluent hole, 12 - sludge return hole, 13 - influent port, 14 - baffle plate, 15 - exhaust pipe, 16 - maintenance reserved port, 21 - effluent weir plate, 22 - waterproof ring, 31 - fixed support body; a - upper aerobic region, b - lower anoxic region, c - sedimentation region. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To more clearly illustrate the present utility model, the following further describes the present utility model in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Please refer to Figures 1 to 4 as shown. The embodiment of the present utility model provides an integrated high tower biological fluidized bed, which includes a reaction tower 1. The inside of the reaction tower 1 is hollow. The inside of the reaction tower 1 is divided into an upper aerobic region a and a lower anoxic region b from top to bottom. In the lower anoxic region b, a number of vertically arranged draft tubes 3 are arranged through a fixed support 31. The upper part of the draft tube 3 extends upward into the upper aerobic region a, and an aerator 4 is arranged inside the upper part of the draft tube 3. These aerators 4 are jointly connected to an external aeration blower (not shown).

[0033] Among them, an outer tower body 2 that can surround the reaction tower 1 is arranged on the outer side of the middle and upper part of the reaction tower 1. The top of the outer tower body 2 is open and its top is higher than the top of the reaction tower 1. The area between the outer tower body 2 and the reaction tower 1 is used as a sedimentation area c. An effluent weir plate 21 is arranged on the upper part of the outer tower body 1, and a liquid inlet 13 is arranged at the bottom of the reaction tower 1 to achieve bottom-in and top-out.

[0034] Among them, a ring of aerobic effluent holes 11 and sludge return holes 12 are formed on the outer wall of the middle and upper part of the reaction tower 1 from top to bottom, and both the aerobic effluent holes 11 and the sludge return holes 12 communicate with the sedimentation area c.

[0035] In this embodiment, an annular baffle 14 extending downward is further arranged on the outer wall of the middle and upper part of the reaction tower 1. There is a distance between the baffle 14 and the reaction tower 1, and the upper end of the baffle 14 is higher than the aerobic effluent holes 11. In this way, the annular baffle further realizes the smooth effluent drainage effect of the aerobic effluent holes.

[0036] In this embodiment, an exhaust pipe 15 extending outward is arranged on the top plate of the reaction tower 1. In this way, covering the top of the reaction tower can prevent the odor gas generated during the biochemical process from escaping wantonly and polluting the air environment. The exhaust gas generated during the biochemical process is collected through the exhaust pipe and discharged to an external exhaust gas treatment system for treatment.

[0037] Furthermore, a maintenance reserved opening 16 is arranged on the top plate of the reaction tower 1. The arranged maintenance reserved opening facilitates the maintenance personnel to carry out the maintenance work on the internal devices of the reaction tower.

[0038] In this embodiment, a waterproof ring 22 is provided at the top of the outer tower body 2. The waterproof ring prevents rainwater from seeping downward into the insulation layer wrapped around the outside of the outer tower body when it rains.

[0039] It should be noted that the installation height of the effluent weir plate 21 should be higher than the opening height of the aerobic effluent hole 11. So that the upper clear liquid in the sedimentation area can overflow through the effluent weir plate.

[0040] When this integrated high tower biological fluidized bed is in use: Sewage enters the lower anoxic area b in the reaction tower 1 through the liquid inlet 13. The aerator 4 inside the draft tube 3 generates a gas-lift effect through aeration, causing part of the sewage to rise upward through the draft tube 3 from bottom to top, while the sewage outside the draft tube 3 will sink. In this way, a cyclic effect is achieved inside the reaction tower 1, making the mixed liquid reach a fluidized state; The upper layer liquid inside the reaction tower 1 will flow downward through the aerobic effluent hole 11 to the sedimentation area c, where solid-liquid separation is achieved. The separated sludge will then flow back into the reaction tower 1 through the sludge return hole 12, and the separated upper clear liquid will be discharged through the effluent weir plate 21, and the above process is cycled.

[0041] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is impossible to enumerate all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An integrated high-tower biological fluidized bed, including a reaction tower, which is hollow inside and characterized by: An outer tower body is arranged outside the middle and upper part of the reaction tower, the top of the outer tower body is open and higher than the top of the reaction tower, the area between the outer tower body and the reaction tower is used as a sedimentation area, a water outlet weir plate is arranged on the upper part of the outer tower body, and a liquid inlet is arranged at the bottom of the reaction tower; The outer wall of the middle and upper part of the reaction tower is formed with a circle of aerobic water outlet holes and sludge return holes in the upper and lower directions, and the aerobic water outlet holes and the sludge return holes are both connected to the sedimentation area; The interior of the reaction tower is divided into an upper aerobic area and a lower anoxic area. A plurality of vertical guide tubes are arranged in the lower anoxic area through a fixed support body. The upper part of the guide tube extends into the upper aerobic area, and an aerator is arranged in the upper part of the guide tube.

2. The integrated high-tower biological fluidized bed according to claim 1, characterized in that: A downwardly extending annular baffle is also arranged on the upper middle outer wall of the reaction tower, a distance is left between the baffle and the reaction tower, and the upper end of the baffle is higher than the aerobic water outlet.

3. The integrated high-tower biological fluidized bed according to claim 1, characterized in that: The top plate of the reaction tower is provided with an exhaust pipe extending outwards.

4. The integrated high-tower biological fluidized bed according to claim 1, characterized in that: The top plate of the reaction tower is provided with a reserved opening for maintenance.

5. The integrated high-tower biological fluidized bed according to claim 1, characterized in that: A waterproof ring is arranged on the top of the outer tower body.

6. The integrated high-tower biological fluidized bed according to claim 1, characterized in that: The height of the water outlet weir plate is higher than the height of the aerobic water outlet hole.

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