CN217594005U

CN217594005U - Sewage treatment device and combined system sewage discharge system

Info

Publication number: CN217594005U
Application number: CN202220990680.6U
Authority: CN
Inventors: 葛俊; 岳冬梅; 李川; 赵东华; 钱晓明; 张翔翔
Original assignee: Shanghai Waterway Engineering Design and Consulting Co Ltd
Current assignee: Shanghai Waterway Engineering Design and Consulting Co Ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-10-18
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a sewage treatment device, which comprises a first vertical shaft and a second vertical shaft which form a communicating vessel, wherein the upper part of the first vertical shaft is connected with a water inlet pipe, the upper part of the second vertical shaft is connected with a water outlet pipe, and the bottom elevation of the water inlet pipe is higher than the bottom elevation of the water outlet pipe; a filter layer is also formed in the second shaft. The sewage treatment device further comprises a backwashing pump and an air blower, a water collecting pipe and an aeration pipe are further arranged at the lower portions of the first vertical shaft and the second vertical shaft, the water collecting pipe is connected to the backwashing pump, the air blower is connected to the air blower, the backwashing pump reversely pumps filtered water at the upper portion of the second vertical shaft to perform backwashing on a filter layer of the second vertical shaft after being started, and the water collecting pipe is used for collecting dirty water after the backwashing and recovering the efficient filtering efficiency of the filter layer through the backwashing. The utility model also discloses a confluence system sewage discharge system is connected with sewage treatment plant in the confluence system pipe network, can effective treatment overflow sewage, avoids overflow sewage's pollution.

Description

Sewage treatment device and combined system sewage discharge system

Technical Field

The utility model belongs to the technical field of sewage discharge handles, a sewage discharge treatment device is related to.

Background

After rainfall occurs, the flow in the combined system pipeline can be increased along with the increase of rainfall, when the flow of the pipeline exceeds the design capacity of a sewage treatment plant or a sewage collection system, the excess part is directly discharged in an overflow mode, and the method is called combined system overflow pollution.

In recent years, a rain sewage flow-control drainage system is mostly adopted in newly-built urban drainage pipe networks. But for historical reasons, the combined drainage system is still reserved in most old urban areas in China. In the process of black and odorous water body treatment and sponge city construction, some small and medium-sized cities are restricted by local government finances or underground pipe position tension, the improvement of a combined system pipeline system is difficult to effectively promote, the sewage overflow condition is more common, the phenomenon that a river channel is black and odorous when raining becomes a pain point which is difficult to be pacified by a treatment unit, and the improvement of the water environment is severely restricted. Therefore, for overflow sewage exceeding the interception scale, terminal strengthening treatment is necessary to ensure the water environment quality of the discharged water body.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sewage treatment plant can carry out terminal processing to the overflow sewage that surpasss the scale of damming.

The utility model provides a sewage treatment device, includes first pipeline and second pipeline, first pipeline and second pipeline bottom intercommunication form the linker, be connected with the inlet tube on the first pipeline, be connected with the outlet pipe on the second pipeline, be formed with the filter layer in the second pipeline, the liquid level elevation in the inlet tube is higher than the liquid level in the outlet pipe all the time.

Optionally, the liquid level in the water inlet pipe is at least 30cm higher than the liquid level in the water outlet pipe.

Optionally, the first pipeline is a first shaft, the second pipeline is a second shaft, communicating pipes are arranged at the bottoms of the first shaft and the second shaft, and the first shaft and the second shaft are connected through the communicating pipes.

Optionally, a screen is provided on top of the filter layer.

Optionally, a backwash pump is also included; the second vertical shaft is internally provided with a water collecting pipe, the water collecting pipe is arranged below the filtering layer and is connected with a water inlet of a back washing pump, and a water outlet of the back washing pump is connected with a return pipe.

Optionally, a blower is also included; an aeration pipe is arranged in the second vertical shaft, the aeration pipe is connected to an air blower, and the aeration pipe is arranged below the filter layer; a plurality of aeration discs are uniformly arranged on the aeration pipe.

Optionally, the mesh diameter of the spacer screen is not more than 2cm.

Optionally, the first shaft and the second shaft are disposed in a common wall.

Optionally, an overrunning pipe is connected to the top of the first shaft.

The application also provides a combined sewage discharge system, which comprises a first combined pipeline and a second combined pipeline, wherein the first combined pipeline is communicated with the water inlet pipe of the sewage treatment device, and the second combined pipeline is communicated with the water outlet of the backwashing pump.

Optionally, be provided with the vatch basin on the first confluence pipeline, the inlet tube with the vatch basin intercommunication, the inlet tube with vatch basin intercommunication department is provided with blocks dirty net.

Optionally, an overflow weir or an overflow plate is provided in the catch basin.

The beneficial effects of the utility model include:

1. the utility model relates to a sewage treatment device, which is characterized in that a first vertical shaft and a second vertical shaft which form a communicating vessel are arranged, so that a water body in the second vertical shaft passes through a filter layer consisting of a suspension filter material under the action of water head pressure, and the overflowing sewage can be filtered;

2. the utility model also comprises a back washing pump and an aeration pipe, which can back wash the filter layer to ensure the filtering efficiency and the filtering effect of the filter layer;

3. the utility model discloses a confluence system sewage discharge system through connecting a plurality of sewage treatment plant on confluence system pipeline, has expanded the throughput of confluence system pipeline to sewage, especially can discharge these filterable overflow sewage to the river course after carrying out filtration treatment to the sewage overflow that the confluence pipeline formed again, has reduced the negative effects of overflow sewage to the environment. On the other hand, countless treatment devices connected to the combined pipeline have simple structure and easy construction and configuration, can rapidly expand the sewage treatment capacity of the combined pipeline, and is favorable for solving the problem of pollution of overflow sewage of the combined pipeline in old urban areas.

Drawings

FIG. 1 is a schematic structural view of an alternative embodiment of the combined sewage discharge system of the present invention.

In the figure: 1. a first shaft; 2. a second shaft; 3. suspending a filter material; 4. separating the net; 5. a water inlet pipe; 6. a water discharge pipe; 7. a communicating pipe; 8. a backwash pump; 9. a blower; 10. a water collection pipe; 11. an aeration pipe; 12. a overrunning tube; 13. a catch basin; 14. A trash rack; 15. a first converging duct; 16. a second converging duct.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, a sewage treatment apparatus includes a first shaft 1 and a second shaft 2; be connected with communicating pipe 7 between first shaft 1 and the second shaft 2, communicating pipe 7 sets up in the bottom of first shaft 1 and second shaft 2, and first shaft 1 and second shaft 2 communicate each other through communicating pipe 7, and rivers in first shaft 1 and the second shaft 2 flow between first shaft 1 and second shaft 2 through communicating pipe 7. Thereby, the first shaft 1 and the second shaft 2 form a communicating vessel, and the sewage of the first shaft 1 is introduced into the second shaft 2 by gravity.

The upper part of the first shaft 1 is connected with a water inlet pipe 5, the second shaft 2 is connected with a water outlet pipe 6, water in the second shaft 2 flows out of the second shaft 2 from the water outlet pipe 6, and the water outlet pipe 6 is arranged at the upper part of the second shaft 2. The axis elevation of the communicating pipe 7 is lower than that of the water inlet pipe 5 and the water outlet pipe 6, so that water in the first vertical shaft 1 enters the second vertical shaft under the action of a gravity water head.

A filtering layer is formed in the second vertical shaft 2, the height of the top surface of the filtering layer is lower than the bottom elevation of the water outlet pipe 6, sewage entering the second vertical shaft 2 passes through the filtering layer from bottom to top under the action of the water head pressure of the first vertical shaft 1, and suspended particles, N, P and other pollutants in the sewage are filtered and removed. The filtered water is discharged into the river channel from the water outlet pipe 6, so that the pollution of the overflow sewage to the river channel is reduced.

Because the sewage in the first shaft 1 flows into the second shaft 2 under the action of gravity, in order to enable the water flow of the second shaft 2 to pass through the filter layer and flow out of the second shaft 2 through the water outlet pipe 6, the first shaft 1 is ensured to ensure that the first shaft 1 and the second shaft 2 form a water head difference, namely, the water head pressure in the first shaft 1 is always greater than the water head pressure in the second shaft 2, so that the liquid level in the water inlet pipe 5 is always higher than the liquid level in the water outlet pipe 6, and the sewage can smoothly flow out of the second shaft 2. Further, in order to ensure that the water flow in the first shaft 1 smoothly flows into the second shaft 2, the liquid level in the water inlet pipe 5 is higher than the liquid level in the water outlet pipe 6 by at least 30cm, so that the water flow in the first shaft 1 has enough head pressure to enter the second shaft 2. Specifically, the height of the bottom of the water inlet pipe 5 can be 30cm higher than that of the top of the water outlet pipe 6.

Specifically, the filter layer mainly comprises suspension filter material 3, sets up at 3 tops of suspension filter material and separates net 4 to form stable filter layer in aqueous, avoid water impact to cause suspension filter material 3 to run and emit, cause the decline of filtering action. Specifically, the density of the suspension filter material 3 is not more than 0.9g/cm ³ The high molecular foaming polyethylene material is made, and the mesh of the separation net 4 has a diameter not more than 2cm.

A backwash pump 8 is also provided in the first shaft 1. The back washing pump 8 is provided with a water inlet and a water outlet, wherein the water outlet of the back washing pump 8 is connected with a return pipe; a water collecting pipe 10 is connected to a water inlet of the backwash pump 8, the water collecting pipe 10 is arranged approximately horizontally in the first shaft 1 and the second shaft 2, and the backwash pump 8 pumps water in the two shafts through the water collecting pipe 10, that is, the backwash pump 8 pumps water in the first shaft 1 and the second shaft 2 into the second confluence pipeline 16 through the water collecting pipe 10.

Specifically, when the volume of the filtered water in the second shaft 2 can meet the requirement that the backwash pump 8 works for at least more than 3min, the backwash pump 8 can be started, and the polluted water in the first shaft 1 and the second shaft 2 after being flushed by the backwash process is pumped into the second confluence pipeline 16. The water in the second shaft 2, especially the filtered water above the filter layer flows through the suspended filter material 3 to wash the suspended filter material 3, the pollutant turbid substance attached to the surface of the suspended filter material 3 is stripped from the particles of the suspended filter material 3 under the action of water flow, enters the polluted water below the filter layer, and is finally discharged out of the first shaft 1 and the second shaft 2 through the return pipe by the back flush pump 8. The cleaning of the suspended filter material 3 is realized by the flushing action of the filtered water body above the filter layer, which is beneficial to maintaining the filtering efficiency of the suspended filter material 3 and prolonging the service life of the suspended filter material 3. On the other hand, in the back washing process, because the filtering water body flows along the gravity direction, the energy consumption is effectively reduced.

Further, in order to improve the effect of separating the turbid matter adhering to the particles of the suspended filter material 3, an aeration pipe 11 is further disposed in the second shaft 2, and the aeration pipe 11 is disposed below the filter layer. The aeration pipe 11 is a pipeline with one end closed, the other end extends out of the second shaft 2 and is connected to the blower 9, and a plurality of aeration discs are arranged on the aeration pipe 11. When the backwashing pump 8 works, the air blower 9 synchronously aerates the water body in the filter layer through the aeration pipe 11 and the aeration disc, under the action of a large amount of gas entering the water body, the water body below the filter layer impacts the suspended filter material 3 particles in the filter layer, so that the turbid matter attached to the suspended filter material 3 particles is accelerated to be stripped from the suspended filter material 3 particles, the cleaning efficiency and the cleaning degree of the suspended filter material 3 are improved, and more pollutants are enabled to enter the water body.

In order to ensure the cleaning effect of the filter layer, enough clear water filtering amount is ensured on the upper part of the filter layer, specifically, the volume of the filtering water body from the lower part of the water outlet pipe 6 to the upper part of the suspended filter material 3 layer is required to meet the pumping water amount of the backwashing pump 8 for at least 3min, and the backwashing strength is preferably 6L/(s.m.m) ² )～15L/(s·m ² )。

Specifically, in order to reduce the volume of the whole sewage treatment apparatus, the first shaft 1 and the second shaft 2 are disposed in common. In other embodiments, the first shaft 1 and the second shaft 2 may be independent from each other, and the first shaft 1 and the second shaft 2 are communicated through a communicating pipe 7.

Specifically, in order to ensure the treatment efficiency and treatment effect on the sewage, the ascending flow velocity of the water in the second shaft 2 is set to be 8 to 16m/h.

Further, an overtaking pipe 12 is connected to the top of the first shaft 1, and when the sewage entering the first shaft 1 exceeds the designed treatment capacity of the sewage treatment device disclosed in the specification, the excessive sewage is directly discharged into the river through the overtaking pipe 12, so that the requirement of quick drainage is ensured.

In the sewage treatment device disclosed by the specification, the first shaft 1 can be communicated with a plurality of second shafts 2, and the bottoms of the second shafts 2 are communicated with the bottom of the first shaft 1 to form a communicating device, so that the treatment capacity of the sewage treatment device on overflow sewage can be further increased.

Specifically, the first shaft 1 and the second shaft 2 are round or square in shape and are customized by engineering modularization or built on site.

It should be noted that the first merging conduit 15 is located upstream of the second merging conduit 16, that is, the water flow pumped by the backwash pump 8 does not enter the first merging conduit 15 any more, but enters another sewage treatment apparatus described herein through the second merging conduit 16.

In other embodiments, the first confluent pipe 15 and the second confluent pipe 16 may be independent from each other, and the water flow pumped by the backwash pump 8 does not enter the first confluent pipe 15.

In other embodiments, the first shaft 1 and the second shaft 2 may be replaced with other types of pipes. The bottoms of the first pipeline and the second pipeline are communicated to form a communicating vessel. The upper part of the first pipeline is connected with a water inlet pipe 5, the second pipeline is connected with a water outlet pipe 6, and the bottom elevation of the water inlet pipe 5 is higher than that of the water outlet pipe 6. A filter layer is arranged in the second pipeline. The lower parts of the first pipeline and the second pipeline are provided with a water collecting pipe 10 and an aeration pipe 11, the water collecting pipe 10 is connected to the back washing pump 8, and the aeration pipe 11 is connected to the blower 9.

As shown in FIG. 1, a combined sewage discharge system comprises a first combined conduit 15 and a second combined conduit 16, the second combined conduit 16 being located downstream of the first combined conduit 15.

The first confluence pipeline 15 is communicated with the water inlet pipe 5, the intercepting well 13 is arranged between the water inlet pipe 5 and the first confluence pipeline 15, the first confluence pipeline 15 is communicated with the intercepting well 13, sewage in the first confluence pipeline 15 enters the first vertical shaft 1 through the water inlet pipe 5 from the intercepting well 13, then enters the second vertical shaft 2 through the communicating pipe 7, flows through the filter layer and finally enters a river through the water outlet pipe 6.

Still be provided with overflow weir or overflow plate in the vatch basin 13, when the water level height in the vatch basin 13 exceeded overflow weir or overflow plate top, rethread inlet tube 5 entered into first shaft 1, made rivers comparatively gentle when entering first shaft 1 to avoid first confluence pipeline 15 normal water to directly enter into first shaft 1, form the impact to first shaft 1.

A trash screen 14 is also provided at the junction of the intake pipe 5 and the vatch shaft 13 to avoid large volumes of solids from plugging the intake pipe 5 or plugging the first shaft 1 and the second shaft 2.

The liquid level height in the intercepting well 13 is always higher than that in the water inlet pipe 6, so that enough water head pressure is ensured, and sewage is discharged through the water outlet pipe 6 after passing through the filter layer.

A plurality of sewage treatment apparatuses described herein may be connected to the first merged pipe 15 to further improve the treatment capacity of the overflowing merged sewage.

The second confluence pipeline 16 is communicated with a return pipe on the backwash pump 8, and the backwash pump 8 discharges the polluted water in the first shaft 1 and the second shaft 2 into the second confluence pipeline 16 through the return pipe, and enters a sewage treatment facility from the second confluence pipeline 16 or enters a sewage treatment device connected to the second confluence pipeline 16.

The foregoing description and description of the embodiments are provided to facilitate understanding and application of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications can be made to these teachings and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. The present invention is not limited to the above description and the description of the embodiments, and modifications and changes made by those skilled in the art without departing from the scope of the present invention should be considered within the protection scope of the present invention.

Claims

1. The utility model provides a sewage treatment device, includes first pipeline and second pipeline, its characterized in that, first pipeline and second pipeline bottom intercommunication form the linker, be connected with the inlet tube on the first pipeline, be connected with the outlet pipe on the second pipeline, be formed with the filter layer in the second pipeline, the liquid level elevation in the inlet tube is higher than the liquid level in the outlet pipe all the time.

2. The sewage treatment apparatus of claim 1, wherein: the liquid level in the water inlet pipe is at least 30cm higher than that in the water outlet pipe.

3. The sewage treatment apparatus according to claim 2, wherein: the first pipeline is a first shaft, the second pipeline is a second shaft, communicating pipes are arranged at the bottoms of the first shaft and the second shaft, and the first shaft and the second shaft are connected through the communicating pipes.

4. The sewage treatment apparatus of claim 3, wherein: the top of the filter layer is provided with a separation net.

5. The sewage treatment apparatus according to claim 4, wherein: the device also comprises a back washing pump; a water collecting pipe is arranged in the second vertical shaft and is arranged below the filter layer, the water collecting pipe is connected with a water inlet of a backwashing pump, and a return pipe is connected to a water outlet of the backwashing pump.

6. The sewage treatment apparatus of claim 5, wherein: the device also comprises a blower; an aeration pipe is arranged in the second vertical shaft, the aeration pipe is connected to an air blower, and the aeration pipe is arranged below the filter layer; a plurality of aeration discs are uniformly arranged on the aeration pipe.

7. The sewage treatment apparatus of claim 6, wherein: the mesh diameter of the separation net is not more than 2cm.

8. The sewage treatment apparatus of claim 3, wherein: the first shaft and the second shaft are arranged in a wall-sharing mode.

9. The sewage treatment apparatus of claim 8, wherein: the top of the first vertical shaft is connected with an overrunning pipe.

10. A combined sewage discharge system comprising a first combining line communicating with the water inlet pipe of the sewage treatment apparatus according to any one of claims 1 to 9 and a second combining line communicating with the water outlet of the backwash pump through a return pipe.

11. A combined sewage discharge system according to claim 10 wherein: be provided with the vatch basin on the first confluence pipeline, the inlet tube with the vatch basin intercommunication, the inlet tube with vatch basin intercommunication department is provided with the trash screen.

12. A combined sewage drainage system according to claim 11, wherein: and an overflow weir or an overflow plate is arranged in the intercepting well.