CN212025095U - Tunnel wastewater treatment system - Google Patents
Tunnel wastewater treatment system Download PDFInfo
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- CN212025095U CN212025095U CN201922123379.6U CN201922123379U CN212025095U CN 212025095 U CN212025095 U CN 212025095U CN 201922123379 U CN201922123379 U CN 201922123379U CN 212025095 U CN212025095 U CN 212025095U
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- 238000004065 wastewater treatment Methods 0.000 title claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000004062 sedimentation Methods 0.000 claims abstract description 49
- 238000005273 aeration Methods 0.000 claims abstract description 45
- 230000015271 coagulation Effects 0.000 claims abstract description 35
- 238000005345 coagulation Methods 0.000 claims abstract description 35
- 230000001112 coagulating effect Effects 0.000 claims abstract description 25
- 238000005192 partition Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000005188 flotation Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 17
- 239000003814 drug Substances 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 22
- 231100000719 pollutant Toxicity 0.000 abstract description 22
- 238000010276 construction Methods 0.000 abstract description 19
- 239000003208 petroleum Substances 0.000 abstract description 19
- 239000010840 domestic wastewater Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 description 35
- 239000003921 oil Substances 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005276 aerator Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model provides a tunnel effluent disposal system, include: a regulating tank; the coagulation treatment device comprises a box body, wherein a partition plate is arranged in the box body and divides the interior of the box body into a coagulation sedimentation area and a treatment area; a first dosing device is arranged above the coagulating sedimentation zone; a water inlet is formed in the box body corresponding to the coagulating sedimentation area, and a water outlet of the regulating tank is communicated with the water inlet; a closable water outlet is arranged on the box body corresponding to the treatment area; the air floatation aeration pipe is arranged at the bottom of the treatment area; the air floatation aeration pipe is fixedly arranged on the side wall of the treatment area through a rotating shaft and is switched between a first position and a second position along the rotating shaft; and a scraper device installed at the upper part of the treatment area. The coagulating sedimentation device in this application sets up in the box, have that area is little, the simple advantage of construction, and can be used to handle petroleum class pollutant and domestic waste water.
Description
Technical Field
The utility model relates to a tunnel construction waste water treatment technical field, concretely relates to tunnel effluent disposal system.
Background
If the waste water generated in the tunnel construction process is not properly treated, the pollution problem of underground water is easily caused, so that the health of local residents is harmed. The sources of tunnel construction wastewater mainly include the following types: water gushing is generated when the tunnel passes through a bad geological unit; waste water from construction equipment, such as drilling rigs; water for dust fall after tunnel blasting; waste water from concrete spraying and grouting; wastewater formed by mixing bedrock fracture water with blasting materials and the like; and other cleaning waters.
The tunnel construction wastewater property is analyzed, and the following points can be found: the main pollutants in the wastewater are suspended particles, the concentration of the suspended particles in each liter of wastewater can reach hundreds or even thousands of milligrams, and the concentration far exceeds the allowable discharge concentration limit value of 70mg/L specified in Integrated wastewater discharge Standard (GB 8978); secondly, since the alkaline additives such as cement hydrolysate and concrete in the construction materials are dissolved in the wastewater, the pH of the wastewater is alkaline, and is mostly in the range of 7-10. And thirdly, the waste water may contain petroleum pollutants, the main source of the petroleum pollutants is leakage of hydraulic oil of hydraulic construction equipment or leakage of engine oil of other equipment, the petroleum pollutants in the waste water have the problem of large content fluctuation, the content of the petroleum pollutants is very low under normal conditions, and the petroleum pollutants are increased rapidly once a leakage event occurs.
In order to avoid adverse effects on the environment, the tunnel construction wastewater must be strictly treated and can be discharged. The tunnel wastewater treatment in the prior art usually adopts single coagulation sedimentation, removes suspended particles in the wastewater through the coagulation sedimentation, and adjusts the pH value. However, the prior art has problems in that, on the one hand, it does not consider the problem of emergency treatment of petroleum pollutants, and in fact, in the tunnel construction site, besides construction wastewater, there is domestic wastewater generated by construction workers, which contains a large amount of organic matters and ammonia nitrogen compared with the construction wastewater, although the amount of the wastewater is not large, so that the wastewater should be taken into the treatment scope for a complete tunnel wastewater treatment system, and the prior art does not treat the wastewater. In the case of tunnel construction wastewater, due to the restrictions of terrain and site, it is often difficult to build large-scale wastewater treatment facilities, and in such a situation, how to explore a treatment system suitable for tunnel construction wastewater is a problem which needs to be solved urgently in the prior art.
Disclosure of Invention
The utility model provides a tunnel effluent disposal system among the prior art exist can't carry out emergency treatment to petroleum class pollutant, and can't carry out the technical problem of effective processing to domestic waste water, and then provide one kind can handle petroleum class pollutant and domestic waste water, and be convenient for construct, take up an area of little tunnel effluent disposal system.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
a tunnel wastewater treatment system comprising: a regulating tank; the coagulation treatment device comprises a box body, wherein a partition plate is arranged in the box body and divides the interior of the box body into a coagulation precipitation area positioned at the upstream and a treatment area positioned at the downstream, a communication port is formed in the partition plate, and the coagulation precipitation area is communicated with the treatment area through the communication port; a first dosing device is arranged above the coagulating sedimentation zone; a water inlet is formed in the box body corresponding to the coagulating sedimentation area, and a water outlet of the regulating tank is communicated with the water inlet; a closable water outlet is arranged on the box body corresponding to the treatment area; the air floatation aeration pipe is arranged at the bottom of the treatment area; the air floatation aeration pipe is fixedly arranged on the side wall of the treatment area through a rotating shaft and is switched between a first position and a second position along the rotating shaft; at the first position, the axial direction of the air flotation aeration pipe is in the horizontal direction, and at the second position, the axial direction of the air flotation aeration pipe is in the vertical direction; and a scraper device installed at the upper part of the treatment area.
The biological filter device is also arranged, and a water inlet of the biological filter device is communicated with a water outlet of the treatment area.
The bottom of the coagulating sedimentation area is provided with a first contraction part.
The coagulating sedimentation zone is internally provided with a plurality of first flow baffle plates extending along the vertical direction, and the first flow baffle plates are sequentially installed on the wall surfaces of the box bodies on two sides corresponding to the coagulating sedimentation zone in a staggered manner along the water flow direction.
The first dosing device is arranged on the upstream of the first flow baffle.
And a stirring device is arranged below the first dosing device and is arranged at the upper part of the coagulating sedimentation zone.
The treatment device is also provided with a second flow baffle which can be detachably arranged on the side wall of the treatment area and is vertical to the water flow direction in the treatment area; and a second contraction part is arranged at the bottom of the treatment area, and the air floatation aeration pipe is arranged at the top end of the second contraction part.
Two closeable water outlets are arranged on the box body corresponding to the treatment area and are respectively arranged at the upper part and the lower part of the treatment area.
And a second dosing device is arranged above the treatment area.
And a lifting mechanism is connected with the scraper device.
The utility model discloses in tunnel effluent disposal system, the advantage lies in:
the tunnel wastewater treatment system in the utility model is provided with a coagulation treatment device, the coagulation treatment device comprises a box body, a baffle plate in the box body separates the interior of the tank body into a coagulation precipitation area and a treatment area, an air floatation aeration pipe is also arranged in the treatment area, and when oil leakage occurs, the air floatation aeration pipe can be utilized to perform air floatation aeration to further remove the oil; when no leakage event occurs, the air floatation aeration can be stopped, the treatment area is used as a sedimentation tank, and the effluent of the coagulating sedimentation enters the treatment area and is discharged after further staying and sedimentation. The air flotation aeration pipe in the application can rotate, wherein when the air flotation aeration pipe is located at the first position, the axial direction of the air flotation aeration pipe is located in the horizontal direction, and when the air flotation aeration pipe is located at the second position, the axial direction of the air flotation aeration pipe is located in the vertical direction, and the arrangement mode has the advantage that when the air flotation aeration pipe is used, the air flotation aeration pipe rotates to the first position for aeration; when the aerator does not need to be used, the aerator can be rotated to the second position, so that the aerator is arranged along the vertical direction, and the granules precipitated in the water flow are prevented from entering the aeration port in large quantity to cause blockage. The coagulating sedimentation device in this application sets up in the box, can directly transport to the scene when using, and need not site operation, have that area is little, the simple advantage of construction.
The tunnel wastewater treatment system in this application still is provided with biological filter, can be used to handle the domestic sewage of job site for the waste water after the processing satisfies the emission requirement.
In order to make the technical scheme of the tunnel wastewater treatment system of the present invention more clearly understood, the following description is made in conjunction with the specific drawings and the specific examples to further explain the present invention.
Drawings
FIG. 1 is a system diagram of a tunnel wastewater treatment system according to the present invention;
fig. 2 is a cross-sectional view of the coagulation treatment device when the air flotation aeration pipe of the present invention is at the first position;
FIG. 3 is a top view of the coagulation sedimentation zone of the coagulation treatment device according to the present invention;
fig. 4 is a schematic structural view of the air flotation aeration pipe of the present invention;
fig. 5 is a cross-sectional view of the coagulation treatment device when the air flotation aeration pipe of the present invention is at the second position;
wherein the reference numerals are:
1-a regulating reservoir; 2-a coagulation treatment device; 21-a coagulating sedimentation zone; 211-a water inlet; 212-a first medicating device; 213-a first baffle plate; 214-a first constriction; 215-a first stirring device; 22-a treatment zone; 221-a second dosing device; 222-an air flotation aeration pipe; 223-a drain outlet in the lower part of the treatment zone; 224-the axis of rotation; 225-a second constriction; 226-a squeegee assembly; 227-a scraper; 228-an oil sump; 229-a second stirring device; 2210-a drain in the upper part of the treatment zone; 2211-a second flow baffle; 2212-shaft sleeve; 3-biological filter.
Detailed Description
Example 1
The embodiment provides a tunnel wastewater treatment system, as shown in fig. 1, specifically comprising an adjusting tank 1 and a coagulation treatment device 2 which are sequentially connected, wherein the coagulation treatment device 2 comprises a tank body, as shown in fig. 2 and 3, a partition plate is arranged in the tank body to partition the interior of the tank body into a coagulation sedimentation zone 21 located at an upstream and a treatment zone 22 located at a downstream, a communication port is arranged on the partition plate, and the coagulation sedimentation zone 21 and the treatment zone 22 are communicated through the communication port. As a preferable embodiment, in the embodiment, the bottom of the coagulation sedimentation zone 21 is provided with a first constriction part 214, the coagulation sedimentation zone 21 is provided with a plurality of first flow baffles 213 extending in the vertical direction, the plurality of first flow baffles 213 are sequentially installed on the box wall surfaces at two sides of the coagulation sedimentation zone 21 in a staggered manner along the water flow direction, each of the first flow baffles 213 extends obliquely from the box wall surface to the downstream of the water flow direction, a water flow channel is formed between the extending end and the opposite box wall surface, and the arrangement of the first flow baffles 213 and the first constriction parts 214 can improve the sedimentation effect of the water flow. A first dosing device 212 is disposed above the coagulation sedimentation zone 21, as a preferred embodiment, the first dosing device 212 is disposed above a region of the coagulation sedimentation zone 21 located upstream of the first flow baffle 213, a first stirring device 215 is disposed in the coagulation sedimentation zone 21 below the first dosing device 212, the first stirring device 215 is disposed above the coagulation sedimentation zone 21, a water inlet 211 is disposed on a box body corresponding to the coagulation sedimentation zone 21, the water inlet 211 is disposed above the coagulation sedimentation zone 21 and located above the first stirring device 215, and a water outlet of the regulation tank 1 is communicated with the water inlet 211.
An air flotation aeration pipe 222 is arranged at the bottom of the treatment area 22, as shown in fig. 4, the air flotation aeration pipe 222 in this embodiment is a microporous diffusion pipe, the microporous diffusion pipe in this embodiment is fixedly installed on the side wall of the treatment area 22 through a rotating shaft 224, the rotating shaft 224 is arranged as a hollow structure pipe which is arranged to communicate with the microporous diffusion pipe, the hollow structure pipe is arranged to communicate with the air compressor and dispersedly transmit the gas output by the air compressor to the microporous diffusion pipe, a shaft sleeve 2212 is installed on the side wall of the treatment area 22, the rotating shaft 224 is installed on the shaft sleeve 2212, the microporous diffusion pipe is suitable for performing position conversion along the rotating shaft 224 between a first position and a second position, wherein when the first position is located, the axial direction of the microporous diffusion pipe is located along the horizontal direction, as shown in fig. 2, the aeration port is arranged towards the upper part, when the microporous diffusion pipe is positioned at the second position, the axial direction of the microporous diffusion pipe is arranged along the vertical direction, and the aeration port is arranged towards the side part, as shown in figure 5. A scraper device 226 is further disposed on the upper portion of the processing region 22, in this embodiment, the scraper device 226 includes a track chain and a scraper 227 installed on the track chain, the track chain is connected to a power mechanism, and the power mechanism drives the track chain to rotate. The direction of motion of the track chain towards one side of the water surface is opposite to the water flow direction of the treatment area 22, the scraper 227 is arranged perpendicular to the track chain, a flat blade is arranged at one end of the scraper 227 far away from the track chain, the flat blade is arranged towards the front in the movement direction of the scraper, an oil collecting groove 228 is further arranged at the upstream of the treatment area 22, and the oil collecting groove 228 is arranged close to one end of the track chain at the upstream in the water flow direction, so that the foam scraped by the scraper can be fed into the oil collecting groove 228 and discharged through the oil collecting groove 228. The tunnel wastewater treatment system in this embodiment is further provided with a lifting mechanism, and the lifting mechanism is connected with the scraper device 226, that is, connected with the crawler-type chain, and is suitable for driving the crawler-type chain to synchronously ascend or descend.
As a preferable embodiment, the second narrowing portion 225 is further disposed at the bottom of the treatment area 22, and a second flow baffle 2211 is mountable in the treatment area 22, the second flow baffle 2211 is detachably mounted on a side wall of the treatment area 22, specifically, downstream of the oil collecting tank 228, the second flow baffle 2211 is disposed perpendicular to the water flow direction in the treatment area 22 when mounted in the treatment area 22, and a water flow channel is formed below the second flow baffle 2211, in this embodiment, clamping grooves are disposed on wall surfaces of the treatment area 22 at two sides in the water flow direction, and the second flow baffle 2211 is suitably mounted on and taken out of the clamping grooves.
In this embodiment, two closable water outlets are provided on the tank corresponding to the treatment area 22, and are respectively provided at the upper part and the lower part of the treatment area 22, and preferably, a second medicine adding device 221 is provided above the treatment area 22, and a second stirring device 229 is provided below the second medicine adding device 221.
The working process of the tunnel wastewater treatment system in the embodiment is as follows: waste water that produces in the tunnel construction process gets into equalizing basin 1 to get into by the export of equalizing basin 1 coagulating sedimentation device coagulating sedimentation district 21, first charge device 212 adds the medicament to intaking, and the medicament that first charge device 212 added in this embodiment is the inorganic polymer coagulant among the prior art, like polyaluminium chloride, and it has that the treatment effect is good and remain little advantage. The inflow water and the medicament are mixed under the stirring action of the stirring device, the mixture flows into the treatment area 22 through the communicating port on the partition plate after being baffled by the first flow baffle plate 213, when no petroleum pollutant is leaked, the air floatation aeration pipe 222 is positioned at the second position without aeration treatment, at this moment, the treatment area 22 is used as a sedimentation tank, the stirring device stops working, the water outlet 2210 positioned at the upper part of the treatment area is opened, the water outlet 223 positioned at the lower part of the treatment area is closed, the water flows out after being baffled by the second flow baffle plate 2211, and the treatment area 22 plays a role in further enhancing the coagulation sedimentation effect. When petroleum pollutants are leaked, the air flotation aeration pipe 222 is rotated to the second position, the second flow baffle 2211 is removed, the air compressor is started to perform aeration, the water outlet at the upper part of the treatment area is closed, the water outlet 223 at the lower part of the treatment area is opened, and the second stirring device 229 is opened, so that suspended matters in the petroleum pollutants are further treated while the treatment of the petroleum pollutants is completed. When the content of suspended matters or oil pollutants in the wastewater is high, the second dosing device 221 can be used for adding a medicament and starting the scraper device 226 to scrape off the foam on the surface of the wastewater, so that the removing effect of the coagulating sedimentation device is improved. Suspended matter and petroleum pollutants in the effluent of the treatment zone 22 in this example meet the primary standards as defined in Integrated wastewater discharge Standard (GB 8978-1996).
Example 2
The embodiment provides a tunnel wastewater treatment system, which specifically comprises a regulating tank 1, a coagulation treatment device 2 and a biological filter 3 which are sequentially connected, wherein the regulating tank 1 and the coagulation treatment device 2 are the same as those in embodiment 1, and the biological filter 3 adopts a biological aerated filter. As a preferred embodiment, the biological aerated filter is arranged in a movable box body, so that the biological aerated filter is convenient to transport to a tunnel construction site.
The tunnel wastewater treatment system in this embodiment can treat domestic wastewater in a construction site, and the working process is as follows: waste water that produces in the tunnel construction process and the domestic wastewater of job site mix the back and get into equalizing basin 1 to get into by the export of equalizing basin 1 coagulating sedimentation device coagulating sedimentation district 21, first charge device 212 adds the medicament to intaking, and the medicament that first charge device 212 added in this embodiment is polyaluminium chloride. The inflow water and the medicament are mixed under the stirring action of the stirring device, the mixture flows into the treatment area 22 through the communicating port on the partition plate after being baffled by the first flow baffle plate 213, when no petroleum pollutant is leaked, the air floatation aeration pipe 222 is positioned at the second position without aeration treatment, at this time, the treatment area 22 is used as a sedimentation tank, the second flow baffle plate 2211 is installed in the treatment area 22, the stirring device stops working, the water outlet 2210 positioned at the upper part of the treatment area is opened, the water outlet 223 positioned at the lower part of the treatment area is closed, water flows out after being baffled by the second flow baffle plate 2211, and the treatment area 22 has the effect of further enhancing coagulation sedimentation. When the petroleum pollutant leaks, the air flotation aeration pipe 222 is rotated to the second position, the second flow baffle 2211 is removed, the air compressor is started to perform aeration, the water discharge port 2210 at the upper part of the treatment area is closed, the water discharge port 223 at the lower part of the treatment area is opened, and the second stirring device 229 is started, so that the suspended matters in the petroleum pollutant are further treated while the treatment of the petroleum pollutant is completed, and part of organic matters, particularly non-soluble organic matters in the wastewater are pretreated. When the content of suspended matters or oil pollutants in the wastewater is high, the second dosing device 221 can be used for adding a medicament and starting the scraper device 226 to scrape off the foam on the surface of the wastewater, so that the removing effect of the coagulating sedimentation device is improved. In this embodiment, the effluent of the coagulating sedimentation device enters the biological aerated filter to further remove soluble organic matters and ammonia nitrogen therein. Suspended matters and petroleum pollutants in the effluent of the treatment area in the embodiment meet the primary standard specified in Integrated wastewater discharge Standard (GB8978-1996), and the content of organic matters (calculated as COD) and ammonia nitrogen meets the discharge standard of surface water environment quality Standard (GB3838-2002) for three types of water.
The practical application mode of the biological aerated filter is very flexible, when the content of organic matters or ammonia nitrogen in the wastewater is high, the air-float aeration pipe 222 can be opened for aeration, the wastewater is pretreated, the removal effect of the organic matters and the ammonia nitrogen is improved, the concentration of dissolved oxygen in the wastewater can be improved by air-float aeration, and therefore the aeration quantity of the subsequent biological aerated filter can be reduced.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.
Claims (10)
1. A tunnel wastewater treatment system, comprising:
a regulating tank;
the coagulation treatment device comprises a box body, wherein a partition plate is arranged in the box body, and the interior of the box body
The device is divided into a coagulating sedimentation area at the upstream and a treatment area at the downstream, and the clapboard is provided with a communication
The port is communicated with the coagulating sedimentation area and the treatment area through the communication port; in the coagulating sedimentation zone
A first medicine adding device is arranged above the first medicine adding device; a water inlet is arranged on the box body corresponding to the coagulating sedimentation area
The water outlet of the regulating tank is communicated with the water inlet; a closable water outlet is arranged on the box body corresponding to the treatment area;
the air floatation aeration pipe is arranged at the bottom of the treatment area; the air-float aeration pipe is fixed by a rotating shaft
A first position and a second position along the rotation axis, wherein the first position and the second position are arranged on the side wall of the processing area; at the first position, the axial direction of the air flotation aeration pipe is in the horizontal direction, and at the second position, the axial direction of the air flotation aeration pipe is in the vertical direction;
and a scraper device installed at the upper part of the treatment area.
2. The tunnel wastewater treatment system according to claim 1, wherein a biofilter unit is further provided, and a water inlet of the biofilter unit is provided in communication with a water outlet of the treatment zone.
3. The tunnel wastewater treatment system of claim 2, wherein a bottom of the coagulation sedimentation zone is provided with a first constriction.
4. The tunnel wastewater treatment system according to claim 3, wherein a first flow baffle extending in a vertical direction is provided in the coagulation sedimentation zone, the first flow baffle being provided in plurality,
and the first flow baffle plates are sequentially and alternately arranged on the wall surfaces of the box bodies on two sides corresponding to the coagulating sedimentation zone along the water flow direction.
5. The tunnel wastewater treatment system of claim 4, wherein the first medicating device is disposed upstream of the first baffle plate.
6. The tunnel wastewater treatment system according to claim 5, wherein a stirring device is arranged below the first dosing device, and the stirring device is arranged at the upper part of the coagulating sedimentation zone.
7. The tunnel wastewater treatment system according to claim 6, wherein a second flow baffle is provided, the second flow baffle being detachably mounted on a side wall of the treatment zone, the second flow baffle being disposed perpendicular to a direction of water flow within the treatment zone; and a second contraction part is arranged at the bottom of the treatment area, and the air floatation aeration pipe is arranged at the top end of the second contraction part.
8. The tunnel wastewater treatment system according to claim 7, wherein two closable drain openings are provided in the tank corresponding to the treatment zone, respectively at the upper and lower portions of the treatment zone.
9. The tunnel wastewater treatment system of claim 8, wherein a second dosing device is disposed above the treatment zone.
10. The tunnel wastewater treatment system of claim 9, wherein a lift mechanism is provided in connection with the squeegee assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922123379.6U CN212025095U (en) | 2019-12-02 | 2019-12-02 | Tunnel wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922123379.6U CN212025095U (en) | 2019-12-02 | 2019-12-02 | Tunnel wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212025095U true CN212025095U (en) | 2020-11-27 |
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ID=73478956
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922123379.6U Expired - Fee Related CN212025095U (en) | 2019-12-02 | 2019-12-02 | Tunnel wastewater treatment system |
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| Country | Link |
|---|---|
| CN (1) | CN212025095U (en) |
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- 2019-12-02 CN CN201922123379.6U patent/CN212025095U/en not_active Expired - Fee Related
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