Aerated grit chamber system

Abstract

The utility model discloses an aerated grit chamber system which comprises an aerated grit chamber, a partition plate and a deslagging device, the internal space of the aerated grit chamber is sequentially divided into a grit chamber area and an oil separation area along the water flow direction, and an effluent weir is arranged on the side surface of one end, close to the oil separation area, of the grit chamber; the partition plates are arranged in the sand setting area, the partition plates and the effluent weir are arranged at intervals in the width direction of the sand setting area, and the partition plates are used for intercepting scum; the slag removal device is movably arranged in the sand setting area and located on the side, away from the effluent weir, of the partition plate, and the slag removal device is used for collecting scum intercepted by the partition plate and conveying the scum to the oil separation area. According to the invention, scum can be prevented from entering the next treatment system along with water flow after being accumulated in the sand setting area to influence the operation stability of the whole sewage treatment plant.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment technology, specifically to an aerated grit chamber system. Background Technology

[0002] An aerated grit chamber is a device used for wastewater treatment. In the grit chamber, the longitudinal water flow forms a spiral flow due to the injection of compressed air. The heavier sand and gravel sink to the bottom of the chamber and are transported to the sand-water separator by a sand suction pump. Fat, oil, scum, etc. float to the surface due to the spiral water flow and enter the oil removal and scum scraping zone.

[0003] Patent CN115350512A discloses an aerated grit chamber, including a chamber body; a slag-blocking grid plate, fixedly installed in the chamber body to divide the chamber body into a floating slag zone and an aerated grit chamber arranged side by side, the aerated grit chamber being further divided into an aeration zone and a grit chamber; an aeration system, including a first aeration main pipe and a first aeration branch pipe, the first aeration main pipe being fixedly installed in the aeration zone, the left end of the first aeration branch pipe being connected to the first aeration main pipe and connected to the aeration zone respectively; a sand suction system, including a linear drive mechanism, an air source, a sand suction pump and a sand suction pipeline; and a slag suction system, including a slag suction pump and a slag suction pipeline, the slag suction pump being fixed on the output end of the linear drive mechanism, and the air chamber of the slag suction pump being connected to the output port of the air source, the inlet of the slag suction pump being connected to the slag suction outlet of the slag suction pipeline, the slag suction inlet of the slag suction pipeline extending into the floating slag zone.

[0004] In the operation of the aerated grit chamber, most of the grease and scum in the grit chamber are swirled into the scum zone by the transverse airflow. However, some scum will still float in the grit chamber, causing it to accumulate and then enter the next treatment system with the water flow, affecting the stable operation of the entire wastewater treatment plant. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an aerated grit chamber system to solve the technical problem that in the prior art, most of the grease and scum in the grit chamber are swirled into the scum chamber by the transverse airflow, but some scum still floats in the grit chamber, causing this part of the scum to accumulate in the grit chamber and enter the next treatment system with the water flow, affecting the stable operation of the entire sewage treatment plant.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an aerated grit chamber system, comprising:

[0008] An aerated grit chamber has its internal space divided into a grit chamber and an oil separator along the direction of water flow. The grit chamber is provided with an outlet weir on the side near the oil separator.

[0009] A baffle plate, wherein the baffle plate is disposed within the settling zone and spaced apart from the effluent weir along the width direction of the settling zone, the baffle plate being used to intercept scum; and

[0010] A slag removal device is movably installed in the sedimentation zone and located on the side of the baffle away from the outlet weir. The slag removal device is used to collect the floating slag intercepted by the baffle and transport it to the oil separation zone.

[0011] In some embodiments, the slag removal device includes a screen bucket, which is movably installed in the aerated grit chamber along the water flow direction and in the vertical direction.

[0012] In some embodiments, the slag removal device includes a running track and a telescopic rod. The running track is located at the top of the aerated grit chamber and extends along the water flow direction. The running track is located on the side of the partition away from the effluent weir. The upper end of the telescopic rod is installed on the running track, and the screen bucket is installed at the lower end of the telescopic rod.

[0013] In some embodiments, the bottom of the sieve bucket is rotatably mounted on the lower end of the telescopic rod along a horizontal axis.

[0014] In some embodiments, the slag removal device further includes a winding device and a wire rope. The winding device is rotatably mounted on the upper end of the telescopic rod along a horizontal axis. One end of the wire rope is wound around the winding device, and the other end of the wire rope is connected to the screen opening of the screen bucket, so as to drive the screen bucket to rotate by rotating the winding device.

[0015] In some embodiments, the sieve hopper is arranged to gradually expand from its bottom toward its sieve opening.

[0016] In some embodiments, the distance from the lower end of the baffle to the bottom of the sedimentation zone is less than the distance from the outlet weir to the bottom of the sedimentation zone.

[0017] In some embodiments, the aerated grit chamber system further includes a cover plate and an odor collection pipe. The cover plate is placed on the upper side of the aerated grit chamber and is used to seal the internal space of the aerated grit chamber. The cover plate is provided with an odor collection hole. One end of the odor collection pipe is connected to the odor collection hole, and the other end of the odor collection pipe is used to connect to an odor treatment device.

[0018] In some embodiments, the cover plate is further provided with an observation window corresponding to the partition and the slag removal device.

[0019] In some embodiments, the cover plate is further provided with an equipment access hole.

[0020] Compared with the prior art, the aerated grit chamber system provided by this utility model is divided into a grit chamber and an oil-water separation chamber along the water flow direction. An outlet weir is provided on the side of the grit chamber near the oil-water separation chamber for discharging wastewater. A baffle is located in the middle of the grit chamber and corresponding to the outlet weir to intercept scum and prevent it from entering the outlet weir. A scum removal device is movably located on the side of the baffle away from the outlet weir. The scum removal device can collect scum and transport it to the oil-water separation chamber. In practical use… Wastewater is transported to the grit chamber via a swirling flow, causing heavier sand and gravel to sink to the bottom while grease, oil, and scum float on the surface. Most of the scum enters the scum zone under the influence of the swirling horizontal airflow, while a small portion is trapped and collected by the baffle plate on the side away from the effluent weir. Subsequently, the scum removal device is activated to collect the scum trapped by the baffle plate and transport it to the oil separation zone. This prevents scum from accumulating in the grit chamber and entering the next treatment system with the water flow, thus affecting the stable operation of the entire wastewater treatment plant.

[0021] The above description is merely an overview of the technical solution of this utility model. To better understand the technical means of this utility model and to enable its implementation according to the description, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the aerated grit chamber system provided by this utility model;

[0023] Figure 2 yes Figure 1 Front view of the middle screen bucket and telescopic rod section;

[0024] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the intermediate sieve hopper.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Aerated grit chamber, 11-Effluent weir, 12-Cover plate, 13-Odor collection pipe, 2-Baffle plate, 3-Screen bucket, 31-Screen plate, 32-Side plate, 4-Running track, 5-Telescopic rod, 51-Installation rod, 6-Winder, 7-Wire rope. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] To address the technical problem in existing technologies where most grease and scum in the grit chamber are swept into the scum chamber by the transverse airflow, but some scum still floats in the grit chamber, causing it to accumulate and then flow into the next treatment system, thus affecting the stable operation of the entire wastewater treatment plant, this invention provides an aerated grit chamber system. This system collects the scum trapped by the baffles and transports it to the grease separation zone, thereby preventing scum from accumulating in the grit chamber and flowing into the next treatment system, thus ensuring the stable operation of the entire wastewater treatment plant.

[0029] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an aerated grit chamber system in one embodiment of the present invention.

[0030] This utility model provides an aerated grit chamber system, including an aerated grit chamber 1, a baffle 2, and a slag removal device. The internal space of the aerated grit chamber 1 is sequentially divided into a grit chamber and an oil separation chamber along the water flow direction. An outlet weir 11 is provided on the side of the grit chamber near the oil separation chamber. The baffle 2 is located in the grit chamber and is spaced apart from the outlet weir 11 along the width direction of the grit chamber. The baffle 2 is used to intercept floating scum. The slag removal device is movably located in the grit chamber and on the side of the baffle 2 away from the outlet weir. The slag removal device is used to collect the floating scum intercepted by the baffle 2 and transport it to the oil separation chamber.

[0031] In this embodiment, the effluent weir 11 is used to discharge sewage, and the baffle 2 is used to intercept scum and prevent it from entering the effluent weir 11. The scum removal device can collect the scum and transport it to the oil separation zone. In specific use, sewage is transported to the sedimentation zone in a swirling manner, causing the heavier sand and gravel to sink to the bottom of the pool, while fat, oil, scum, etc. float on the surface. Most of the scum enters the scum zone under the action of the swirling horizontal airflow, while a small portion of the scum is intercepted and accumulated on the side of the baffle 2 away from the effluent weir 11. Then, the scum removal device is activated to collect the scum intercepted by the baffle 2 and transport it to the oil separation zone, thereby preventing the scum from accumulating in the sedimentation zone and entering the next treatment system with the water flow, affecting the stable operation of the entire sewage treatment plant. Furthermore, the baffle 2 and the scum removal device in this application are only installed at the effluent weir 11, which is small in size and low in cost.

[0032] In this embodiment, the baffle 2 is located at the top of the aerated grit chamber 1 and extends downwards, with its lower end submerged in the sewage, thereby forming a barrier to intercept scum.

[0033] In one embodiment, please refer to Figure 1 and Figure 2 The slag removal device includes a screen hopper 3, which is movably installed in the aerated grit chamber 1 along the water flow direction and in the vertical direction.

[0034] In this embodiment, the slag removal device is specifically the screen hopper 3. One end of the screen hopper 3 is an open screen opening, which is horizontally positioned. The side wall of the screen hopper 3 is provided with screen holes to filter out wastewater when collecting scum. The screen hopper 3 can reciprocate along the direction of water flow, that is, the screen hopper 3 can move between the sedimentation zone and the oil separation zone. The screen hopper 3 can also move vertically. Initially, the screen hopper 3 is away from the oil separation zone and positioned above the wastewater. When the baffle 2 intercepts a... After the scum has settled, the screen bucket 3 is driven downwards, so that it is partially submerged in the sewage. Then, the screen bucket 3 is driven towards the oil-separating zone, thereby collecting the scum into the screen bucket 3. When the screen bucket 3 reaches the vicinity of the oil-separating zone wall, it is driven upwards, raised to a certain height, and then moved towards the oil-separating zone again until it enters the oil-separating zone, thus achieving the purpose of collecting the scum and transporting it to the oil-separating zone. After the scum is discharged, the screen bucket 3 is driven back to its initial position.

[0035] In one embodiment, please refer to Figure 1 and Figure 2 The slag removal device includes a running track 4 and a telescopic rod 5. The running track 4 is located at the top of the aerated grit chamber 1 and extends along the water flow direction. The running track 4 is located on the side of the partition 2 away from the effluent weir. The upper end of the telescopic rod 5 is installed on the running track 4, and the screen hopper 3 is installed at the lower end of the telescopic rod 5.

[0036] In this embodiment, the running track 4 is installed on the top of the aerated grit chamber 1 to drive the screen bucket 3 to move along the water flow direction. The telescopic rod 5 is installed on the running track 4 and can extend and retract in the vertical direction to drive the screen bucket 3 to move in the vertical direction.

[0037] It should be noted that the running track 4 and the telescopic rod 5 are existing technologies and will not be described in detail here.

[0038] In one embodiment, please refer to Figure 1 and Figure 2 The bottom of the sieve hopper 3 is rotatably mounted on the lower end of the telescopic rod 5 along the horizontal axis.

[0039] In this embodiment, to facilitate slag discharge from the screen hopper 3, the bottom of the screen hopper 3 is rotatably configured along the axis in the first direction, allowing the screen opening to rotate. The first direction is perpendicular to the water flow direction. When collecting scum, the screen opening rotates to a horizontal position facing the oil-separating zone. When the screen hopper 3 needs to be transferred from the sedimentation zone to the oil-separating zone, the screen opening rotates upwards to prevent scum from falling out of the screen hopper 3. When transferring the scum to the oil-separating zone for discharge, the screen opening rotates downwards, allowing the scum in the screen hopper 3 to fall into the oil-separating zone under its own gravity, thus completing the slag discharge. This configuration is simple to operate and convenient to use.

[0040] Specifically, the lower end of the telescopic rod 5 is provided with an installation rod 51. The installation rod 51 is horizontally arranged and extends toward the partition plate 2. The bottom of the sieve hopper 3 is provided with an installation hole. The installation hole is adapted to the installation rod 51. The sieve hopper 3 is rotatably installed on the installation rod 51 through the installation hole.

[0041] The outlet weir 11 and the partition 2 are spaced apart along the first direction.

[0042] In one embodiment, please refer to Figure 2 The slag removal device also includes a winder 6 and a wire rope 7. The winder 6 is rotatably mounted on the upper end of the telescopic rod 5 along a horizontal axis. One end of the wire rope 7 is wound around the winder 6, and the other end of the wire rope 7 is connected to the screen opening of the screen bucket 3, so that the screen bucket 3 can be rotated by rotating the winder 6.

[0043] In this embodiment, in order to realize the rotation of the screen bucket 3, a winder 6 is also provided at the upper end of the telescopic rod 5. One end of the wire rope 7 is wound around the winder 6, and the other end is fixedly connected to the screen opening. The winder 6 winds up the wire rope 7 to drive the screen bucket 3 to rotate upward. The winder 6 unwinds the wire rope 7 and the screen bucket 3 itself is driven to rotate downward.

[0044] In one embodiment, please refer to Figure 3 The sieve hopper 3 is gradually expanded from its bottom toward its sieve opening.

[0045] In this embodiment, the sieve 3 includes two sieve plates 31 and two side plates 32. The two sieve plates 31 are arranged vertically, and the ends of the two sieve plates 31 away from the oil separation zone are connected. The other ends of the two sieve plates 31 are away from each other. The two side plates 32 are located on opposite sides of the sieve plates 31, and the side plates 32 are connected to the two sieve plates 31 respectively to form a funnel-shaped sieve 3.

[0046] In this embodiment, the distance from the lower end of the baffle 2 to the bottom of the sedimentation zone is less than the distance from the outlet weir 11 to the bottom of the sedimentation zone. This arrangement can effectively intercept scum on the water surface.

[0047] In one embodiment, please refer to Figure 1 The aerated grit chamber system also includes a cover plate 12 and an odor collection pipe 13. The cover plate 12 is installed on the upper side of the aerated grit chamber 1 and is used to seal the internal space of the aerated grit chamber 1. The cover plate 12 is provided with an odor collection hole. One end of the odor collection pipe 13 is connected to the odor collection hole, and the other end of the odor collection pipe 13 is used to connect to an odor treatment device.

[0048] In this embodiment, a large amount of odor will be generated during the operation of the aerated grit chamber 1, which will affect the living environment around the sewage treatment plant. In order to prevent the odor from overflowing, a cover plate 12 is provided above the aerated grit chamber 1, thereby forming a sealed space inside the aerated grit chamber 1 to prevent the odor from overflowing. At the same time, an odor collection pipe 13 is also provided to connect the space inside the aerated grit chamber 1 with the odor treatment equipment, so as to guide the odor to the odor treatment equipment for treatment and avoid affecting the surrounding living environment.

[0049] In one embodiment, the cover plate 12 is further provided with an observation window corresponding to the partition plate 2 and the slag removal device.

[0050] In this embodiment, since the aerated grit chamber 1 is a sealed environment, in order to facilitate the observation of the operation of the slag removal device, the cover plate 12 is also provided with an observation window, through which the operation of the scum and the screen hopper 3 can be observed in real time.

[0051] In one embodiment, the cover plate 12 is also provided with an equipment maintenance hole.

[0052] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0053] In practical use, wastewater is transported to the sedimentation zone in a swirling motion, causing heavier sand and gravel to sink to the bottom, while fats, oils, and scum float on the surface. Most of the scum enters the scum zone under the influence of the swirling horizontal airflow, while a smaller portion is trapped and collected by the baffle 2 on the side of the baffle 2 away from the effluent weir. Initially, the screen hopper 3 is far from the oil-separating zone and is positioned above the wastewater. After the baffle 2 intercepts a certain amount of scum, the telescopic rod 5 drives the screen hopper 3 downwards, partially submerging it in the wastewater. Then, the running track 4 drives the telescopic rod 5 and the screen hopper 3 towards the oil-separating zone, thereby collecting the scum into the screen hopper 3. When the screen hopper 3 reaches the vicinity of the oil-separating zone wall... The winding device 6 rotates to wind up the wire rope 7, thereby driving the screen bucket 3 to rotate upward to prevent the scum inside the screen bucket 3 from falling out. Then, the telescopic rod 5 drives the screen bucket 3 to move upward. After being raised to a certain height, the running track 4 drives the telescopic rod 5 and the screen bucket 3 to move towards the oil separation zone until they enter the oil separation zone. The winding device 6 unwinds the wire rope 7, and the screen bucket 3 rotates downward under its own weight until the screen opening faces downward. At this time, the scum inside the screen bucket 3 falls into the oil separation zone under its own weight, thus completing the scum discharge work. Then, the winding device 6 winds up again, so that the screen opening is in a horizontal state. The running track 4 then drives the telescopic rod 5 and the screen bucket 3 back to the initial position.

[0054] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An aerated grit chamber system, characterized in that, It includes: An aerated grit chamber has its internal space divided into a grit chamber and an oil separator along the direction of water flow. The grit chamber is provided with an outlet weir on the side near the oil separator. A baffle plate is provided in the sedimentation zone and is spaced apart from the effluent weir along the width of the sedimentation zone. The baffle plate is used to intercept floating scum. as well as A slag removal device is movably installed in the sedimentation zone and located on the side of the baffle away from the outlet weir. The slag removal device is used to collect the floating slag intercepted by the baffle and transport it to the oil separation zone.

2. The aerated grit chamber system according to claim 1, characterized in that, The slag removal device includes a screen bucket, which is movably installed in the aerated grit chamber along the water flow direction and in the vertical direction.

3. The aerated grit chamber system according to claim 2, characterized in that, The slag removal device includes a running track and a telescopic rod. The running track is located at the top of the aerated grit chamber and extends along the water flow direction. The running track is located on the side of the partition away from the effluent weir. The upper end of the telescopic rod is installed on the running track, and the screen bucket is installed at the lower end of the telescopic rod.

4. The aerated grit chamber system according to claim 3, characterized in that, The bottom of the sieve bucket is rotatably mounted on the lower end of the telescopic rod along a horizontal axis.

5. The aerated grit chamber system according to claim 4, characterized in that, The slag removal device also includes a winder and a wire rope. The winder is rotatably mounted on the upper end of the telescopic rod along a horizontal axis. One end of the wire rope is wound around the winder, and the other end of the wire rope is connected to the screen opening of the screen bucket, so that the screen bucket can be rotated by rotating the winder.

6. The aerated grit chamber system according to claim 2, characterized in that, The sieve bucket is gradually widened from its bottom toward its sieve opening.

7. The aerated grit chamber system according to claim 1, characterized in that, The distance from the lower end of the baffle to the bottom of the sedimentation zone is less than the distance from the outlet weir to the bottom of the sedimentation zone.

8. The aerated grit chamber system according to claim 1, characterized in that, The aerated grit chamber system also includes a cover plate and an odor collection pipe. The cover plate is installed on the upper side of the aerated grit chamber and is used to seal the internal space of the aerated grit chamber. The cover plate is provided with an odor collection hole. One end of the odor collection pipe is connected to the odor collection hole, and the other end of the odor collection pipe is used to connect to odor treatment equipment.

9. The aerated grit chamber system according to claim 8, characterized in that, The cover plate is also provided with an observation window corresponding to the partition and the slag removal device.

10. The aerated grit chamber system according to claim 8, characterized in that, The cover plate is also provided with equipment maintenance holes.

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