CN211170156U - Sewage treatment device capable of removing fine silt - Google Patents
Sewage treatment device capable of removing fine silt Download PDFInfo
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- CN211170156U CN211170156U CN201922180352.0U CN201922180352U CN211170156U CN 211170156 U CN211170156 U CN 211170156U CN 201922180352 U CN201922180352 U CN 201922180352U CN 211170156 U CN211170156 U CN 211170156U
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- sewage treatment
- sand
- box body
- pipe
- fine silt
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Abstract
The utility model discloses a can get rid of sewage treatment plant of slight silt, the power distribution box comprises a box body, the inside of box is equipped with the swirler, the upper portion side of swirler has connect the inlet tube that runs through the box curb plate, the bottom is equipped with the collection sand hopper that runs through the box bottom plate, the lower extreme of collection sand hopper is equipped with the sand discharge pipe of taking the blowdown valve, the top of swirler is equipped with the overflow pipe, the outside that the box inner chamber is located the overflow pipe is fixed with the baffle, the outside that is located collection sand hopper is fixed with down the baffle, go up the baffle and evenly seted up equal water hole with the plate body of baffle down, the box inner chamber is located, the region between the baffle is equipped with the grit filter. The utility model has the advantages of reasonable design, at first utilize the swirler to remove the large granule silt in the sewage, recycle grit filter layer and bedding and padding layer and remove slight silt, can effectively remove the slight silt that is less than 200 mu m in the sewage, and then reduce the influence of slight silt to biochemical system.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a can get rid of sewage treatment plant of slight silt.
Background
In recent years, most urban sewage treatment plants in China adopt a mode of canceling or exceeding a primary sedimentation tank in the sewage treatment process, and mainly aim to ensure a carbon source required in the process of biological nitrogen and phosphorus removal in sewage. But the arrangement of the urban sewage treatment plant leads the fine silt (< 200um) which can be removed in the primary sedimentation tank to enter the biochemical system and gradually accumulate in the biochemical system. In addition, the serious phenomena of rain and sewage mixed flow and water and soil loss exist in cities in China, so that the silt condition in a biochemical system is more and more serious. The silt accumulation can increase along with the increase of time, and the particle size of more than 70um can be deposited at the bottom of the biochemical pool due to self gravity; the fine silt with the particle size less than or equal to 70um is in different states due to different particle sizes, some are in a suspension state, and some are caught by an activated sludge net; the fine silt having a smaller particle size is difficult to remove. The accumulation of fine silt in the biochemical system can cause the problems of activated sludge activity reduction, aggravation of effluent turbidity, aeration setting blockage and the like, so that the subsequent treatment of the activated sludge becomes more difficult. Therefore, it is necessary to reduce the influence of the fine silt on the biochemical system and to remove the fine silt in the sewage with a strong force.
The sewage treatment plant in cities and towns in China mainly adopts the principles of filtering separation, gravity sedimentation and centrifugal sedimentation to remove fine silt in the sewage. The filtering separation is that under the action of external force, the mixed liquid solid is intercepted through the pore canal of the porous medium, thereby realizing the solid and separation of heterogeneous systems. Some fabric media, such as (screen cloth, filter cloth) can generally retain inorganic particles with a particle size of 5 μm or more, but the filter media may be clogged with time, and thus need to be cleaned. Traditional advection type grit chamber utilizes gravity to subside and carries out getting rid of tiny silt in the sewage, and aeration grit chamber is through the aeration mode increase the collision probability between silt and deposit. These two kinds of grit chambers all utilize silt self gravity to subside, but the effect of removing sand based on these two kinds of grit chambers is not very good to the treatment effect of slight silt.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned problem that exists among the conventional art, provide a sewage treatment plant that can get rid of slight silt.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
a sewage treatment device capable of removing fine silt comprises a box body, wherein a cyclone is arranged in the box body, a water inlet pipe penetrating through a side plate of the box body is connected to the upper side end of the cyclone, a sand collecting hopper penetrating through a bottom plate of the box body is arranged at the bottom of the cyclone, a sand discharging pipe with a discharging valve is arranged at the lower end of the sand collecting hopper, an overflow pipe is arranged at the top end of the cyclone, an upper partition plate is fixed at the outer side of the overflow pipe in an inner cavity of the box body, a lower partition plate is fixed at the outer side of the sand collecting hopper, water equalizing holes are uniformly formed in plate bodies of the upper partition plate and the lower partition plate, a sand filtering layer and a padding layer positioned below the sand filtering layer are arranged in an area between the upper partition plate and the lower partition plate in the inner cavity of the box body, a drain pipe is externally connected to the side part of the cavity above the, the lower end of the box body is communicated with a back-flushing pipe which penetrates through the side part of the box body, and a bottom plate of the cavity below the lower partition plate is externally connected with a drain pipe.
Furthermore, in the sewage treatment device capable of removing fine silt, the four corners of the bottom side of the box body are fixedly provided with the supporting legs, and the bottom ends of the supporting legs are provided with the moving rollers; the side of landing leg rotates and is connected with the installation piece, sliding connection has the locating lever in the installation piece.
Furthermore, in the above sewage treatment device capable of removing fine silt, shaft seals are installed at the penetrating positions of the pipe bodies of the box body.
Furthermore, in the above sewage treatment apparatus capable of removing fine silt, the discharge valve of the sand discharge pipe is composed of an upper discharge valve and a lower discharge valve, and when sand is not discharged, the upper discharge valve is in an open state, and the lower discharge valve is in a closed state; when the sand is discharged, the upper discharging valve is in a closed state, and the lower discharging valve is in an open state.
Further, in the above sewage treatment apparatus capable of removing fine silt, the horizontal height of the respective plate bodies of the upper partition plate and the lower partition plate gradually decreases from the center to the edge.
Further, in the above sewage treatment apparatus capable of removing fine silt, the opening valves are installed in the respective pipe bodies of the sewage discharge pipe and the drain pipe.
Furthermore, in the above sewage treatment device capable of removing fine silt, the sand filter layer is formed by stacking quartz sand filter materials with the particle size of 0.4 mm.
Furthermore, in the sewage treatment device capable of removing fine silt, the thickness of the sand filtration layer is 250-350 mm.
Further, in the above sewage treatment plant capable of removing fine silt, the padding layer is formed by stacking quartz sand filter materials with the particle size of 2 mm.
Furthermore, in the sewage treatment device capable of removing fine silt, the thickness of the padding layer is 80-120 mm.
The utility model has the advantages that:
the utility model has the advantages of reasonable design, it is at first water conservancy swirler and grit filtration technique come to handle sewage, at first utilizes the swirler to remove the large granule silt in the sewage, recycles grit filter layer and bedding and padding layer and removes slight silt, can effectively remove the slight silt that is less than 200 mu m in the sewage, and then reduces the influence of slight silt to biochemical system.
Of course, it is not necessary for any product to achieve all of the above advantages simultaneously in practicing the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of the present invention;
fig. 2 is a schematic diagram of a swirler in the present invention;
fig. 3 is a schematic bottom view of the upper and lower partition plates of the present invention;
FIG. 4 is a schematic top view of the lower partition plate of the present invention;
FIG. 5 is a schematic structural view of the ring-shaped tray of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-box body, 2-cyclone, 201-sand collecting hopper, 202-sand discharge pipe, 203-upper discharge valve, 204-lower discharge valve, 3-water inlet pipe, 4-overflow pipe, 5-upper baffle, 6-sand filtering layer, 7-cushion layer, 8-blow-off pipe, 9-annular support box, 10-backwashing pipe, 11-lower baffle and 12-water discharge pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 5, the present embodiment is a sewage treatment apparatus capable of removing fine silt, which includes a tank 1, and a cyclone 2 is disposed inside the tank 1. The upper side end of the cyclone 2 is connected with a water inlet pipe 3 which runs through the side plate of the box body 1, the bottom of the cyclone 2 is provided with a sand collecting hopper 201 which runs through the bottom plate of the box body 1, and the lower end of the sand collecting hopper 201 is provided with a sand discharging pipe 202 with a discharge valve. The top end of the cyclone 2 is provided with an overflow pipe 4, an upper baffle plate 5 is fixed at the outer side of the overflow pipe 4 in the inner cavity of the box body 1, and a lower baffle plate 11 is fixed at the outer side of the sand collecting hopper 201. The uniform water holes are uniformly formed in the plate bodies of the upper partition plate 5 and the lower partition plate 11, and the horizontal position height of each plate body of the upper partition plate 5 and the lower partition plate 11 is gradually reduced from the center to the edge. The edges of the upper partition plate 5 and the lower partition plate 11 are fixed with the inner wall of the box body 1 in a sealing way.
In this embodiment, the region of the inner cavity of the box body 1 between the upper partition plate 5 and the lower partition plate 11 is provided with a sand filter layer 6 and a padding layer 7 below the sand filter layer 6, the lateral part of the box body 1 above the sand filter layer 6 is externally connected with a drain pipe 8, and an annular supporting box 9 is fixed below the padding layer 7. The upper end of the annular supporting box 9 is an opening, the lower end is communicated with a back-flushing pipe 10 penetrating through the side part of the box body 1, and a bottom plate of a cavity below the lower partition plate 11 is externally connected with a drain pipe 12. A supporting net for supporting the cushion layer is arranged between the annular tray box 9 and the padding layer 7.
In this embodiment, the respective bodies of the sewage draining pipe 8 and the water draining pipe 12 are provided with opening valves. Shaft seals are arranged at the penetrating positions of the pipe bodies on the box body 1.
In this embodiment, the discharge valve of the sand discharge pipe 202 is composed of an upper discharge valve 203 and a lower discharge valve 204, and when sand is not discharged, the upper discharge valve 203 is in an open state, and the lower discharge valve 204 is in a closed state; when discharging sand, the upper discharge valve 203 is in a closed state, and the lower discharge valve 204 is in an open state. Such design is in order to prevent that during the sand discharge, sewage can flow out from the sand discharge mouth, causes the pollution of surrounding environment water.
In this embodiment, the sand filter layer is formed by stacking quartz sand filter materials with a particle size of 0.4mm, and the thickness of the sand filter layer is 250-350 mm. The cushion material layer is formed by stacking quartz sand filter materials with the particle size of 2mm, and the thickness of the cushion material layer is 80-120 mm.
In the embodiment, supporting legs 13 are fixed at four corners of the bottom side of the box body 1, and moving rollers 14 are arranged at the bottom ends of the supporting legs 13; the side end of the supporting leg 13 is rotatably connected with a mounting block 15, and a positioning rod 16 is slidably connected in the mounting block 15.
In this embodiment, the design dimensions of the swirler 2 are as shown in table 1 below:
TABLE 1 swirler design dimensions
One specific application of this embodiment is: raw water enters a cyclone 2 from a water inlet pipe 3 in a tangential direction, an outer vortex flow path is downwards arranged in a cylinder separation main zone of the cyclone 2, large fine particles are thrown to a cylinder wall under the action of inertial centrifugal force due to different densities of fine silt and sewage, the fine silt is settled to a sand collecting hopper 201 along the wall, the sand is discharged by a discharge valve, and small fine silt in the sewage upwards moves an inner vortex flow path along with the sewage and is discharged to a water collecting zone above an upper partition plate 5 by a central overflow pipe 4; the cone of the cyclone 1 is higher than the cylinder, the cone has a certain length and can increase the number of spiral turns, so that the retention time is increased, and some particles can be settled due to the self gravity in the rising process; sewage in the catchment area evenly flows to grit filter material layer 6 through the equal water hole of last baffle 5, and when sewage permeated grit filter material layer 6, grit filter material layer 6 can hold back the fine particle that swirler 2 did not get rid of, and grit filter layer 6 is the quartz sand filter material layer, and the below is the great bed course of material of packing of granule. The treated water is discharged through a water discharge pipe 12 into the next-stage reactor.
The grit filtering part below of this device is equipped with backwash pipe 10, after grit filters operation a period, will hold back slight silt on the medium, produces the pressure differential in the exit, after the pressure differential reaches a definite value, washs the grit filtering area through backwash water, and the waste water of washing is discharged from blow off pipe 8, and when backwash pipe 10 was out of work, blow off pipe 8's aperture valve was closed condition.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a can get rid of sewage treatment plant of fine silt, includes the box, its characterized in that: a swirler is arranged in the box body, the upper side end of the swirler is connected with a water inlet pipe penetrating through the side plate of the box body, the bottom of the cyclone is provided with a sand collecting hopper which penetrates through the bottom plate of the box body, the lower end of the sand collecting hopper is provided with a sand discharge pipe with a discharge valve, the top end of the cyclone is provided with an overflow pipe, an upper baffle plate is fixed at the outer side of the overflow pipe in the inner cavity of the box body, a lower baffle plate is fixed at the outer side of the sand collecting hopper, the plate bodies of the upper clapboard and the lower clapboard are evenly provided with water equalizing holes, the area of the inner cavity of the box body between the upper clapboard and the lower clapboard is provided with a sand filtering layer and a padding layer positioned below the sand filtering layer, the side part of the box body, which is positioned at the cavity above the sandstone filtration layer, is externally connected with a drain pipe, an annular supporting box is fixed below the padding layer, the upper end of the annular support box is provided with an opening, the lower end of the annular support box is communicated with a back-flushing pipe penetrating through the side part of the box body, and a bottom plate of a cavity below the lower partition plate is externally connected with a drain pipe.
2. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: supporting legs are fixed at four corners of the bottom side of the box body, and moving rollers are mounted at the bottom ends of the supporting legs; the side of landing leg rotates and is connected with the installation piece, sliding connection has the locating lever in the installation piece.
3. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: shaft seals are arranged at the penetrating positions of the pipe bodies on the box body.
4. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: the discharge valve of the sand discharge pipe is composed of an upper discharge valve and a lower discharge valve, when sand is not discharged, the upper discharge valve is in an open state, and the lower discharge valve is in a closed state; when the sand is discharged, the upper discharging valve is in a closed state, and the lower discharging valve is in an open state.
5. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: the horizontal position height of the respective plate bodies of the upper partition plate and the lower partition plate is gradually reduced from the center to the edge.
6. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: and the respective pipe bodies of the sewage discharge pipe and the drain pipe are provided with opening valves.
7. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: the sand filtering layer is formed by stacking quartz sand filtering materials with the particle size of 0.4 mm.
8. The sewage treatment plant capable of removing fine silt according to claim 7, wherein: the thickness of the sand filtration layer is 250-350 mm.
9. The sewage treatment plant capable of removing fine silt according to claim 1, wherein: the bedding layer is formed by stacking quartz sand filter materials with the particle size of 2 mm.
10. The sewage treatment plant capable of removing fine silt according to claim 9, wherein: the thickness of the padding layer is 80-120 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922180352.0U CN211170156U (en) | 2019-12-09 | 2019-12-09 | Sewage treatment device capable of removing fine silt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922180352.0U CN211170156U (en) | 2019-12-09 | 2019-12-09 | Sewage treatment device capable of removing fine silt |
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| Publication Number | Publication Date |
|---|---|
| CN211170156U true CN211170156U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922180352.0U Expired - Fee Related CN211170156U (en) | 2019-12-09 | 2019-12-09 | Sewage treatment device capable of removing fine silt |
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| CN (1) | CN211170156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210146A (en) * | 2021-05-31 | 2021-08-06 | 江西理工大学 | Hydrocyclone with self-cleaning function |
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2019
- 2019-12-09 CN CN201922180352.0U patent/CN211170156U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210146A (en) * | 2021-05-31 | 2021-08-06 | 江西理工大学 | Hydrocyclone with self-cleaning function |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 Termination date: 20201209 |