CN220201674U

CN220201674U - Sequence intermittent sewage treatment device

Info

Publication number: CN220201674U
Application number: CN202321407837.9U
Authority: CN
Inventors: 董广博; 高源�; 丁友斌; 郑兰; 邹浩然; 杨健; 胡永杰
Original assignee: ANHUI WATER CONSERVANCY TECHNICAL COLLEGE
Current assignee: ANHUI WATER CONSERVANCY TECHNICAL COLLEGE
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2023-12-19
Anticipated expiration: 2033-06-05

Abstract

The utility model relates to a sequential intermittent sewage treatment device which comprises an aeration tank, a sedimentation tank, a reaction tank and an aeration mechanism. According to the sewage treatment sequence, the aeration tank, the sedimentation tank and the reaction tank are connected in sequence, and the adjacent tanks are communicated through a drainage channel. The aeration mechanism comprises an air supply assembly and a stirring assembly. The air supply assembly is provided with an air supply port which is used for conveying air to sewage in the aeration tank and is positioned on the bottom wall of the aeration tank. The stirring assembly comprises a stirring rod. The stirring rod is rotationally connected to a mounting plate above the aeration tank. The axial direction of the stirring rod is vertical to the horizontal plane and is positioned right above the air supply port. The bottom of puddler is provided with the stirring leaf, and can produce the thrust that acts on the nearby rivers of air supply mouth along with the rotation of puddler, can delay these bubbles and escape to the surface of water, increases the contact time of partial air and sewage, strengthens aeration effect in order to fully improve the dissolved oxygen volume in the sewage to improve the effect of follow-up microorganism treatment.

Description

Sequence intermittent sewage treatment device

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sequential intermittent sewage treatment device.

Background

Domestic sewage of rural residents and part of sewage mixed with industrial wastewater are discharged into peripheral river channels without treatment, so that pollution is caused to the peripheral water environment of the rural residents, the physical health of the peripheral residents is greatly threatened, and the normal life and farming of the peripheral residents are seriously influenced.

At present, an activated sludge method is widely adopted to carry out biological treatment on the sewage, so as to remove harmful substances such as nitrogen, phosphorus and the like in the sewage. Such as a Modified Sequencing Batch Reactor (MSBR), is a sewage treatment plant that incorporates activated sludge process technology. The aeration tank in the sewage treatment device is a structure for sewage treatment by using an activated sludge method, and can provide favorable survival conditions for aerobic microorganisms by manually supplementing dissolved oxygen to sewage in the tank, provide a certain sewage residence time and meet the oxygen demand of the aerobic microorganisms and the mixing condition of full contact of the sewage and the activated sludge so as to ensure the sewage treatment effect.

The current aeration methods of the aeration tank can be divided into two types of blast aeration and mechanical aeration. The blast aeration is to convey air to the bottom of the tank through a pipeline, and bubbles diffuse and escape and finally break at the liquid level, so that oxygen can be dissolved in sewage at a gas-liquid interface in the process. However, the blast aeration has the defects that the escape speed of the air conveyed to the bottom of the tank is high, the air cannot fully contact with sewage, the operation efficiency is low, and the dissolved oxygen of the sewage cannot be fully increased, so that the sewage treatment effect of the sequencing batch sewage treatment device is limited.

Disclosure of Invention

Based on the above, it is necessary to provide a sequencing batch sewage treatment apparatus according to the present utility model, which solves the technical problem that the sewage treatment effect of the sequencing batch sewage treatment apparatus is limited due to the poor aeration effect in the aeration tank in the prior art.

The utility model discloses a sequential intermittent sewage treatment device, which comprises: an aeration tank, a sedimentation tank, a reaction tank and an aeration mechanism. According to the sewage treatment sequence, the aeration tank, the sedimentation tank and the reaction tank are connected in sequence, and the adjacent tanks are communicated through a drainage channel. The aeration mechanism comprises an air supply assembly and a stirring assembly. The air supply assembly is provided with an air supply port which is used for conveying air to sewage in the aeration tank and is positioned on the bottom wall of the aeration tank. The stirring assembly comprises a stirring rod. The stirring rod is rotationally connected to a mounting plate above the aeration tank. The axial direction of the stirring rod is vertical to the horizontal plane and is positioned right above the air supply port. The bottom of puddler is provided with the stirring leaf, and can produce the thrust that acts on the nearby rivers of air supply mouth along with the rotation of puddler.

As a further improvement of the above-described aspect, the air supply assembly includes an air pump and an air pipe. The air extracting pump is fixedly arranged on the aeration tank, an air extracting nozzle of the air extracting pump is communicated with an air inlet pipe positioned in the atmosphere outside the aeration tank, and an air extracting nozzle of the air extracting pump is connected with one end of the air transmission pipeline. The other end of the gas transmission pipeline extends to the position right below the stirring rod to serve as a gas supply port.

As a further improvement of the scheme, a spray head is fixedly arranged at one end of the air supply port of the air transmission pipeline, and the spray head is in a shower shape.

As a further improvement of the scheme, the heights of the surfaces of the bottom walls of the aeration tank, the sedimentation tank and the reaction tank are sequentially reduced according to the sewage treatment sequence. An electric valve is arranged in the drainage channel.

As a further improvement of the scheme, the end part of each drainage channel is fixedly provided with a water delivery pump, and the delivery direction of the water delivery pump is matched with the sewage treatment sequence.

As a further improvement of the scheme, the bottom walls of the reaction tank and the sedimentation tank are provided with sunk impurity collecting tanks, each impurity collecting tank is provided with a first baffle, and a plurality of collecting holes are formed in the first baffle.

As a further improvement of the above solution, the longitudinal section of the collecting hole is isosceles trapezoid, and the top end of the collecting hole is a thicker end.

As a further improvement of the scheme, a water purifying mechanism is arranged in the reaction tank. The water purifying mechanism comprises a first purifying bin and a second purifying bin. The first purifying bin and the second purifying bin are arranged in the reaction tank according to the sewage treatment sequence, the two purifying bins are of a front-back penetrating cavity structure, and the front surface and the back surface are fixedly connected with protective screens. The first purifying bin is filled with a haydite layer, and the second purifying bin is filled with a pebble layer. The ceramsite layer and the pebble layer are both internally provided with a medicament box, and at least one water treatment medicament is arranged in the medicament box.

As a further improvement of the above-described scheme, the kinds of water treatment agents include flocculants, corrosion inhibitors, scale inhibitors and bactericides.

As a further improvement of the scheme, the first purifying bin and the second purifying bin are arranged at intervals, and the second partition plates are arranged on one sides, far away from the sedimentation tank, of the first purifying bin and the second purifying bin. A plurality of water delivery holes are formed in the two second partition plates.

Compared with the prior art, the technical scheme disclosed by the utility model has the following beneficial effects:

according to the utility model, the aeration tank, the sedimentation tank and the reaction tank which are arranged in sequence in the aeration tank can carry out biological treatment on sewage, and by arranging the aeration mechanism in the aeration tank, the stirring mechanism can generate the thrust acting on water flow and bubbles near the bottom air supply port, so that the water flow below is wrapped by the part of bubbles sprayed out by the air supply port to change the original rising path, the bubbles are delayed from escaping to the water surface, the contact time of part of air and the sewage is prolonged, the aeration effect is enhanced, the dissolved oxygen in the sewage is fully improved, the subsequent microbial treatment effect is improved, and meanwhile, the activated sludge is fully contacted with the sewage by stirring, and the sewage treatment effect is further improved.

Drawings

FIG. 1 is a schematic perspective view of a sewage treatment apparatus with intermittent sequence according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of the aeration tank and the aeration mechanism in FIG. 1;

FIG. 3 is a front view of the sequencing batch sewage treatment apparatus of FIG. 1;

FIG. 4 is a schematic perspective view of the impurity collection tank of FIG. 1;

FIG. 5 is a schematic view showing the case where the reinforcing anchor structure in the impurity collection tank of embodiment 1 of the present utility model is suspended from the first separator;

fig. 6 is an exploded view of the water purification mechanism of fig. 1.

Description of the main reference signs

1. An aeration tank; 10. an aeration mechanism; 101. a gas supply assembly; 1010. an air supply port; 1011. an air extracting pump; 1012. a gas line; 1013. a spray head; 102. a stirring assembly; 1021. a stirring rod; 1022. stirring the leaves; 11. a mounting plate; 2. a sedimentation tank; 3. a reaction tank; 4. a drainage channel; 5. an impurity collection tank; 51. a first separator; 510. a collection hole; 6. a water purifying mechanism; 61. a first purification bin; 62. a second purification bin; 601. a protective net; 602. a second separator; 6020. a water delivery hole.

The foregoing general description of the utility model will be described in further detail with reference to the drawings and detailed description.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present embodiment provides a sequential intermittent sewage treatment apparatus, which includes: an aeration tank 1, a sedimentation tank 2, a reaction tank 3 and an aeration mechanism 10.

According to the sewage treatment sequence, the aeration tank 1, the sedimentation tank 2 and the reaction tank 3 are sequentially connected, and the adjacent tanks are communicated through the drainage channel 4, the heights of the bottom wall surfaces of the aeration tank 1, the sedimentation tank 2 and the reaction tank 3 are sequentially reduced, and an electric valve can be arranged in the drainage channel 4. In some embodiments, a transfer pump whose transfer direction matches the sewage treatment sequence is fixedly installed at the end of each drainage channel 4. In this way, the electrically operated valve can be opened, and when the liquid level of the next tank is lower than the bottom wall height of the previous tank, i.e. the water amount is small, the sewage in the previous tank can be automatically discharged from the drainage channel 4 to the next tank. And when the liquid level of the next tank is high, sewage is pumped from the previous tank to the next tank by a conveying pump. It should be noted that, the drainage channels 4 between adjacent tanks may be provided with a plurality of drainage channels, one part is only provided with an electric valve, and the other part is provided with an electric valve and a delivery pump, so that the device to be opened can be selected according to the actual situation during use.

The aeration mechanism 10 includes a gas supply assembly 101 and a stirring assembly 102.

The air supply assembly 101 is provided with an air supply port 1010, and the air supply port 1010 is used for delivering air to sewage in the aeration tank 1 and is located on the bottom wall of the aeration tank 1. In this embodiment, the air supply assembly 101 may include an air pump 1011 and an air line 1012. The air pump 1011 is fixedly arranged on the aeration tank 1, and an air suction nozzle of the air pump 1011 is communicated with an air inlet pipe positioned in the atmosphere outside the aeration tank 1, and an air discharge nozzle of the air pump 1011 is connected with one end of the air transmission pipeline 1012. The other end of the gas line 1012 extends to just below the stirring rod 1021 as the gas supply port 1010.

In some embodiments, the number of the air supply assemblies 101 may be set into a plurality of groups, the plurality of groups of air supply assemblies 101 may be distributed along the periphery of the aeration tank 1, and the air supply ports 1010 of the plurality of air supply pipelines 1012 may converge at the middle part of the bottom wall of the aeration tank 1, or may be surrounded at the middle part to form a circular area, and the circular area may be located directly below the stirring assembly 102. In addition, the shower head 1013 may be fixedly installed at one end of the gas supply port 1010 of the gas pipeline 1012, and may be shaped like a shower head for shower, so that air in the gas pipeline 1012 may be divided into dense and independent bubbles.

The stirring assembly 102 includes a stirring rod 1021 and may also include a stirring motor. The stirring rod 1021 is rotatably connected to a mounting plate 11 above the aeration tank 1, the stirring motor is fixedly arranged on the upper surface of the mounting plate 11, and an output shaft of the stirring motor can penetrate through the mounting plate 11 and is coaxially fixed with the stirring rod 1021. The axial direction of the stirring rod 1021 is perpendicular to the horizontal plane and is located directly above the air supply port 1010. The stirring blade 1022 is provided at the bottom end of the stirring rod 1021, and can generate a thrust force acting on the water flow near the air supply port 1010 according to the rotation of the stirring rod 1021.

In this embodiment, the stirring blade 1022 is similar to a fan in structure and arrangement, and the air supply port 1010 is located at a position "air outlet side of the fan". When the stirring motor drives the stirring rod 1021 to continuously rotate along a preset direction, vortex is generated in sewage and acts on the lower water flow, so that the lower water flow wraps part of bubbles sprayed out of the air supply port 1010 to change the original rising path, and the bubbles are delayed to escape to the water surface, so that the contact time of part of air and sewage is increased, the dissolved oxygen in the sewage is fully improved, the effect of subsequent microbial treatment is further improved, and activated sludge and sewage can be fully contacted by stirring.

Please combine fig. 4, the bottom walls of the reaction tank 3 and the sedimentation tank 2 may be provided with a sinking type impurity collecting tank 5, and the number and width of the impurity collecting tanks 5 may be adaptively adjusted according to the size of the corresponding tank body, so long as the impurities precipitated in the sedimentation tank 2 and the reaction tank 3 can be sufficiently collected. The first partition plate 51 is installed on each impurity collecting tank 5, the first partition plate 51 is provided with a plurality of collecting holes 510, the collecting holes 510 can be in a round table shape, namely, the longitudinal section of each collecting hole 510 is in an isosceles trapezoid shape, and the top ends of the collecting holes 510 are thicker ends, so that the bulk sediment relatively easily enters the impurity collecting tank 5 from the collecting holes 510, and is not easy to escape from the impurity collecting tank 5.

Referring to fig. 5, in some embodiments, a plurality of reinforced anchor rod structures may be suspended or placed in the impurity collecting tank 5, and a plurality of densely distributed plate-like or rod-like structures are provided on the anchor rods, whose overall shape is similar to that of a plant root system, and may be tightly combined with the precipitated solid impurities, so that the relative sliding between the pure impurities and the impurities is converted into a structure similar to a root soil complex, thereby enhancing the stability of the impurities in the tank and preventing the impurities from being lost to the next tank or the outside of the sewage treatment device. In some embodiments, the impurity collection tank 5 may have a trapezoid shape, and an end thereof may be provided with an outlet for discharging impurities.

After the aeration tank is used for aeration, the sewage is discharged to the sedimentation tank 2, and after the sedimentation tank 2 is subjected to degradation microorganism reaction, the sewage is continuously discharged to the reaction tank 3. In this embodiment, the water purifying means 6 may be installed in the reaction tank 3.

Referring to fig. 6, the water purifying mechanism 6 includes a first purifying bin 61 and a second purifying bin 62. The first purifying bin 61 and the second purifying bin 62 are arranged in the reaction tank 3 according to the sewage treatment sequence, the two purifying bins are of a front-back penetrating cavity structure, and the front surface and the back surface are fixedly connected with the protective screening 601, so that ceramsite and pebbles can be prevented from separating from corresponding cavities, and contact with external water flow is not hindered. The first purifying bin 61 is filled with a haydite layer, and the second purifying bin 62 is filled with a pebble layer. The ceramsite layer and the pebble layer are both internally provided with a medicament box, at least one water treatment medicament is arranged in the medicament box, the medicament box can continuously release the medicament when the water treatment medicament box is contacted with water flow, the ceramsite layer and the pebble layer provide reaction sites for the medicament, and the types of the water treatment medicaments can comprise flocculating agents, corrosion inhibitors, scale inhibitors and bactericides. In some embodiments, activated carbon can be distributed in the ceramsite layer and the pebble layer, so that the adsorption effect is good. In addition, the first purifying bin 61 and the second purifying bin 62 can be assembled and disassembled from the reaction tank 3, so that the reagent boxes can be replaced regularly.

When sewage is located in the reaction tank 3, the water flow can soak the first purifying bin 61 and the second purifying bin 62 in sequence, and the medicament released by the medicament box can remove suspended solids and harmful substances in the water, deodorize and decolor, soften and stabilize water quality and the like, so that the sewage reaches the standard capable of being discharged to a river after passing through the water purifying mechanism 6.

In some embodiments, the water purification mechanism 6 may be provided with multiple groups according to the degree of contamination of the sewage. In addition, each set of the first purifying bin 61 and the second purifying bin 62 may be provided at intervals, and both sides of the first purifying bin 61 and the second purifying bin 62 away from the sedimentation tank 2 are provided with the second partition plates 602. A plurality of water delivery holes 6020 are formed in the two second partition plates 602, sewage passing through the purification bin is discharged to the rear direction through the water delivery holes 6020, a pipeline for periodic flushing can be arranged in the water delivery holes 6020, and the impurity blocked in the water delivery holes 6020 can be cleaned by spraying clear water.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims

1. A sequencing batch sewage treatment device, comprising: an aeration tank (1), a sedimentation tank (2), a reaction tank (3) and an aeration mechanism (10); according to the sewage treatment sequence, the aeration tank (1), the sedimentation tank (2) and the reaction tank (3) are sequentially connected, and the adjacent tanks are communicated through a drainage channel (4); the aeration mechanism (10) comprises an air supply assembly (101) and a stirring assembly (102); the air supply assembly (101) is provided with an air supply port (1010), and the air supply port (1010) is used for conveying air to sewage in the aeration tank (1) and is positioned on the bottom wall of the aeration tank (1); the stirring assembly (102) comprises a stirring rod (1021); the stirring rod (1021) is rotationally connected to a mounting plate (11) above the aeration tank (1); the axial direction of the stirring rod (1021) is vertical to the horizontal plane and is positioned right above the air supply port (1010); the stirring blade (1022) is provided at the bottom end of the stirring rod (1021), and can generate a thrust force acting on the water flow near the air supply port (1010) with the rotation of the stirring rod (1021).

2. The sequencing batch sewage treatment device of claim 1, wherein the air supply assembly (101) includes an air pump (1011) and an air delivery conduit (1012); the air extracting pump (1011) is fixedly arranged on the aeration tank (1), an air extracting nozzle of the air extracting pump (1011) is communicated with an air inlet pipe positioned in the atmosphere outside the aeration tank (1), and an air exhausting nozzle of the air extracting pump (1011) is connected with one end of the air transmission pipeline (1012); the other end of the gas pipeline (1012) extends to the position right below the stirring rod (1021) to serve as the gas supply port (1010).

3. The sequencing batch sewage treatment device according to claim 2, wherein a shower head (1013) is fixedly installed at one end of the air supply port (1010) of the air pipeline (1012), and the shower head (1013) is shower-like.

4. The sequencing batch sewage treatment device according to claim 1, wherein the heights of the bottom wall surfaces of the aeration tank (1), the sedimentation tank (2) and the reaction tank (3) are sequentially reduced in the sewage treatment order; an electric valve is arranged in the drainage channel (4).

5. The sequencing batch sewage treatment device according to claim 4, wherein a water pump having a delivery direction matching the sewage treatment sequence is fixedly installed at the end of each of the drainage channels (4).

6. The sequencing batch sewage treatment device according to claim 1, wherein the bottom walls of the reaction tank (3) and the sedimentation tank (2) are provided with sunk impurity collection tanks (5), each impurity collection tank (5) is provided with a first partition plate (51), and a plurality of collection holes (510) are formed in the first partition plate (51).

7. The sequencing batch sewage treatment device of claim 6, wherein the longitudinal section of the collection hole (510) is isosceles trapezoid, and the top end of the collection hole (510) is a thicker end.

8. The sequencing batch sewage treatment device according to claim 1, wherein a water purifying mechanism (6) is installed in the reaction tank (3); the water purifying mechanism (6) comprises a first purifying bin (61) and a second purifying bin (62); the first purifying bin (61) and the second purifying bin (62) are arranged in the reaction tank (3) according to the sewage treatment sequence, the two purifying bins are of a front-back penetrating cavity structure, and the front surface and the back surface are fixedly connected with a protective net (601); the first purifying bin (61) is filled with a haydite layer, and the second purifying bin (62) is filled with a pebble layer; the ceramsite layer and the pebble layer are both internally provided with a medicament box, and at least one water treatment medicament is arranged in the medicament box.

9. The sequencing batch sewage treatment device of claim 8, wherein the types of water treatment chemicals include flocculants, corrosion inhibitors, scale inhibitors and bactericides.

10. The sequencing batch sewage treatment device according to claim 8, wherein the first purification bin (61) and the second purification bin (62) are arranged at intervals, and a second partition (602) is arranged on one side of both the first purification bin (61) and the second purification bin (62) away from the sedimentation tank (2); a plurality of water delivery holes (6020) are formed in the two second partition plates (602).