CN213446581U - Intermittent type formula tunnel effluent disposal system - Google Patents
Intermittent type formula tunnel effluent disposal system Download PDFInfo
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- CN213446581U CN213446581U CN202022134699.4U CN202022134699U CN213446581U CN 213446581 U CN213446581 U CN 213446581U CN 202022134699 U CN202022134699 U CN 202022134699U CN 213446581 U CN213446581 U CN 213446581U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 230000001112 coagulating effect Effects 0.000 claims abstract description 6
- 238000005345 coagulation Methods 0.000 claims description 39
- 230000015271 coagulation Effects 0.000 claims description 39
- 239000012528 membrane Substances 0.000 claims description 35
- 238000005188 flotation Methods 0.000 claims description 32
- 238000000108 ultra-filtration Methods 0.000 claims description 28
- 238000004065 wastewater treatment Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 3
- 238000005374 membrane filtration Methods 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 description 18
- 239000010802 sludge Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000007667 floating Methods 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses an intermittent type formula tunnel effluent disposal system, the upper portion of coagulating air supporting pond is provided with the water inlet and links to each other with the catch basin through the inlet tube, install stirring and membrane filtration body group spare, dosing tank, gas distribution pipe and dissolved air releaser in the coagulating air supporting pond, stirring and membrane filtration body group spare include paddle, milipore filter, rotating electrical machines, evacuation pump and outlet pipe, rotating electrical machines is used for driving the paddle rotatory, evacuation pump is used for evacuating the inner chamber of milipore filter, one end of outlet pipe stretches into in the inner chamber of milipore filter, the other end vertically wears out the milipore filter and stretches outside the coagulating air supporting pond; the gas distribution pipe is annular and is located the below of stirring and membrane filtration integrative subassembly, and dissolved gas releaser is the circumference equipartition on the gas distribution pipe to solve current tunnel effluent disposal system and take up an area of big, degree of automation is low, go out the unable up to standard problem of water quality.
Description
Technical Field
The utility model belongs to the technical field of tunnel waste water treatment, concretely relates to intermittent type formula tunnel effluent disposal system.
Background
With the continuous development of the construction of the traffic facilities in China, the expressway is one of the most common facilities, and the tunnel engineering is also adopted more and more widely in mountains or hills. In the tunnel construction process, certain influence is inevitably generated on the local water environment, the problem of environmental pollution caused by the certain influence is increasingly attracted by people, and tunnel construction wastewater is considered as one of main pollution sources. Therefore, in recent years, the investment of tunnel construction wastewater treatment is gradually increased in China, and the water ecological environment around the tunnel is effectively protected.
At present, the main sources of tunnel construction wastewater are: the water gushes generated when the tunnel passes through the unfavorable geological units, the tunnel construction usually encounters the unfavorable geological units such as faults, underground rivers and the like, and the underground water and surface water sources in the pores gush out under the action of pressure to form water gushes; waste water generated by tunnel construction machinery and used large machinery are easy to enter gushing water to cause pollution during discharge due to reasons of grease leakage and the like; the aim of dust reduction is achieved by spraying water on a working surface in the blasting process of settled wastewater after blasting, and the SS of the wastewater is high; according to the source of the wastewater, the main pollutants in the tunnel construction wastewater are suspended matters and petroleum.
At present, the tail end treatment technology taking coagulation, precipitation and filtration as the core is mostly adopted. The prior art has unreasonable technical design: (1) the retention time is short, the volume is small, and the effluent is unstable or unqualified due to overlarge load; (2) the existing process equipment has low automation degree, and a plurality of processes need manual operation, so that the effluent is unstable, and the potential safety hazard is large; (3) the construction site is usually limited, large-scale complete equipment cannot enter the site, and the installation difficulty is high. With the coming of sewage discharge standard policy, the prior art is difficult to meet the discharge requirement after the standard is raised. The main reasons are: a. the fluctuation of the water quantity of the wastewater inlet water is large; b. the device is limited by the site, the volume of the device is small, the load is too high, and the treatment is incomplete; c. some tunnels pass through a water source and cannot treat micropollutants in tunnel wastewater.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing an intermittent type formula tunnel effluent disposal system to solve that current tunnel effluent disposal system takes up an area of big, degree of automation is low, the unable up to standard problem of play water quality of water.
Therefore, the utility model discloses the technical scheme who adopts does: an intermittent tunnel wastewater treatment system comprises a coagulation air flotation tank, a water collecting tank, a slag collecting tank and a control cabinet, wherein a water inlet is formed in the upper portion of the coagulation air flotation tank and is connected with the water collecting tank through a water inlet pipe, a stirring and membrane filtering integrated assembly, a dosing tank, an air distribution pipe and a dissolved air releaser are installed in the coagulation air flotation tank, the stirring and membrane filtering integrated assembly comprises a paddle, an ultrafiltration membrane, a rotating motor, a vacuum pumping pump and a water outlet pipe, the paddle is arranged outside the ultrafiltration membrane in a surrounding mode, the rotating motor is used for driving the paddle to rotate, the vacuum pumping pump is used for vacuumizing the inner cavity of the ultrafiltration membrane, so that water outside the ultrafiltration membrane enters the inner cavity after being filtered by the ultrafiltration membrane, one end of the water outlet pipe extends into the inner cavity of the ultrafiltration membrane, and the other end of the water outlet pipe vertically penetrates through the; the gas distribution pipe is annular and is positioned below the stirring and membrane filtering integrated component, and the dissolved gas releasers are uniformly distributed on the gas distribution pipe in a circumferential manner; the bottom in the air supporting pond that thoughtlessly congeals is provided with row mud sand discharging pipe, and the upper portion in air supporting pond that thoughtlessly congeals is provided with the overflow mouth and links to each other with the collection sediment pond through the overflow pipe be provided with the automatic control valve respectively on inlet tube, outlet pipe, row mud sand discharging pipe and the overflow pipe.
Preferably, the number of the blades is four, and the blades are circumferentially and uniformly distributed outside the ultrafiltration membrane.
Preferably, the top of the coagulation air flotation tank is provided with a cover plate for mounting a rotating motor and a vacuum pump, and the water outlet pipe penetrates out of the bottom of the coagulation air flotation tank downwards.
More preferably, the coagulation air flotation tank and the slag collecting tank are built together.
Preferably, the dissolved air releasers are six in total, vertical pipes corresponding to the dissolved air releasers one to one are arranged below the air distribution pipe, the vertical pipes are communicated with the air distribution pipe, and one dissolved air releaser is arranged at the tail end of each vertical pipe.
And simultaneously, the utility model also discloses an intermittent type formula tunnel effluent disposal technology, including foretell intermittent type formula tunnel effluent disposal system, the step is:
s1, controlling an automatic control valve on a water inlet pipe of the coagulation air flotation tank to be opened by a control cabinet, and controlling the water inlet time of the system; after water inflow is finished, the dissolved air releaser starts to work, supersaturated air is released to form micro bubbles, the micro bubbles are quickly attached to suspended matters, the suspended matters are lifted to the surface of the coagulation air floatation tank to form a sludge floating layer, the control cabinet controls an automatic control valve on an overflow pipe to be opened, the sludge floating layer is discharged into a slag collecting tank, and the first-stage reaction is finished;
s2, the control cabinet controls the dosing tank to dose coagulant into the coagulation air flotation tank, and meanwhile, the rotating motor starts to work, and the blades start to rotate, so that the coagulant is fully mixed with the water body; after the coagulation reaction is finished, the control cabinet opens an automatic control valve on a sludge and sand discharge pipe at the bottom of the coagulation air floatation tank to discharge sludge and grit out of the system, and the second-stage reaction is finished;
s3, controlling the vacuum pump to start running by the control machine room and simultaneously opening the automatic control valve of the water outlet pipe to generate negative pressure in the ultrafiltration membrane, starting filtering the water body in the coagulation air flotation tank, finally discharging the treated tunnel wastewater through the water outlet pipe, finishing the reaction in the third stage and finishing one-time intermittent tunnel wastewater treatment;
and S4, repeating S1-S3, and carrying out the next batch type tunnel wastewater treatment.
The utility model has the advantages that:
(1) the stirring and membrane filtering integrated component, the dosing tank and the air flotation device are integrated in the coagulation air flotation tank, and three processes of air flotation, coagulation and filtration are integrated in one treatment unit, so that the floor area of a treatment system is greatly reduced, and the possibility of installing wastewater treatment equipment on occasions with limited sites in tunnels is increased;
(2) the dissolved air releaser arranged annularly can ensure that micro bubbles are fully contacted with suspended matters in raw water and adhered to form a sludge floating layer, thereby greatly shortening the air floatation treatment time and achieving the purpose of improving the treatment efficiency; stirring and membrane filtration integrative subassembly can stir the water and realize fully coagulating, improves and thoughtlessly congeals efficiency, can filter the micro pollutant through the milipore filter again, has greatly promoted the quality of water that the system goes out water, to the characteristic pollutant of getting rid of in the tunnel waste water: the oil substances and SS have particularly remarkable effects;
(3) the wastewater treatment is carried out quantitatively and in different times by adopting an intermittent water inlet mode, and is combined with the staged treatment in each wastewater treatment process, so that the tunnel wastewater can meet the current comprehensive wastewater discharge standard after being treated by the system, and the treated water quality is stable and safer;
(4) the whole system has high automation degree and simple and convenient operation, and reduces the manual operation of a construction site.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a plan view of the dissolved air releaser mounted on the air distribution pipe.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
as shown in fig. 1, the intermittent tunnel wastewater treatment system mainly comprises a coagulation air flotation tank 1, a water collecting tank 2, a slag collecting tank 3, an automatic control valve 4, an air distribution pipe 5, a dissolved air releaser 6, a rotating motor 7, a vacuum pump 8, blades 9, an ultrafiltration membrane 10, a dosing tank 11, a control cabinet 12, a water outlet pipe 13 and a sludge and sand discharge pipe 14.
The upper part of the coagulation air flotation tank 1 is provided with a water inlet and is connected with the water collecting tank 2 through a water inlet pipe. The tunnel wastewater firstly converges in the water collecting tank 2 and then is intermittently sent into the coagulation air floatation tank 1 for treatment, so that the water volume treated by the coagulation air floatation tank 1 is ensured to be constant, and the situation that new tunnel wastewater continuously flows in the treatment process can not occur; intermittent water feeding is adopted, so that the water quantity treated each time is constant, and the water quality stably reaches the standard; because the water quantity treated each time is controllable, the whole system can adopt a miniaturized design, occupies small space and is particularly suitable for occasions with limited sites in tunnels.
The coagulation air flotation tank 1 is internally provided with a stirring and membrane filtration integrated component, a dosing tank 11, an air distribution pipe 5 and a dissolved air releaser 6. The stirring and membrane filtration integrated component integrates stirring and filtration functions and comprises a paddle 9, an ultrafiltration membrane 10, a rotating motor 7, a vacuum pump 8 and a water outlet pipe 13. The paddle 9 is arranged outside the ultrafiltration membrane 10 in a surrounding mode, and the rotating motor 7 is used for driving the paddle 9 to rotate and stirring the water body. The vacuum pumping pump 8 is used for vacuumizing the inner cavity of the ultrafiltration membrane 10, so that water outside the ultrafiltration membrane 10 enters the inner cavity after being filtered by the ultrafiltration membrane 10 under the action of negative pressure. One end of the water outlet pipe 13 extends into the inner cavity of the ultrafiltration membrane 10, and the other end vertically penetrates through the ultrafiltration membrane 10 and extends out of the coagulation air flotation tank 1, so as to discharge water filtered by the ultrafiltration membrane 10. The dosing box 11 is connected with the control cabinet 12, and the control cabinet 12 controls the dosing amount.
Referring to fig. 1 and 2, the air distribution pipe 5 is annular and located below the stirring and membrane filtration integrated assembly, and mounting support legs are arranged on the left side and the right side of the air distribution pipe 5 and used for being fixedly mounted on the coagulation air flotation tank 1. The dissolved air releasers 6 are uniformly distributed on the air distribution pipe 5 in a circumference way. The dissolved air releaser 6 is preferably six, but not limited to 6. Vertical tubes 5a which are in one-to-one correspondence with the dissolved air releasers 6 are arranged below the air distribution tube 5, the vertical tubes 5a are communicated with the air distribution tube 5, and the tail end of each vertical tube 5a is provided with one dissolved air releaser 6
The bottom of the coagulation air flotation tank 1 is provided with a sludge and sand discharge pipe 14 for discharging flocculates and gravel to a sludge discharge and collection tank. The upper part of the coagulation air flotation tank 1 is provided with an overflow port and is connected with the slag collecting tank 3 through an overflow pipe, and the water inlet pipe, the water outlet pipe 13, the sludge and sand discharge pipe 14 and the overflow pipe are respectively provided with an automatic control valve 4.
Preferably, the number of the blades 9 is four, and the blades are circumferentially and uniformly distributed outside the ultrafiltration membrane 10, but is not limited to four.
The top of the coagulation air flotation tank 1 is provided with a cover plate for installing a rotating motor 7 and a vacuum pumping pump 8, and a water outlet pipe 13 downwards penetrates out of the bottom of the coagulation air flotation tank 1. The rotary motor 7, the vacuum pumping pump 8 and the water outlet pipe 13 are arranged in a vertically staggered manner, and arrangement is facilitated.
The coagulation air flotation tank 1 and the slag collecting tank 3 are combined, and the arrangement position of the water collecting tank 2 is determined according to the waste water generation position and the waste water yield.
An intermittent tunnel wastewater treatment process comprises the following steps:
s1, controlling the opening of an automatic control valve 4 on a water inlet pipe of the coagulation air flotation tank 1 by the control cabinet 12, and controlling the water inlet time of the system; after the water inlet is finished, the dissolved air releaser 6 starts to work, supersaturated air is released to form micro bubbles, the micro bubbles are rapidly attached to suspended matters, the suspended matters are lifted to the surface of the coagulation air flotation tank 1 to form a sludge floating layer, the automatic control valve 4 on the control cabinet 12 controls the overflow pipe to be opened, the sludge floating layer is discharged into the slag collecting tank 3, and the first-stage reaction is finished.
S2, the control cabinet 12 controls the dosing tank 11 to dose the coagulant into the coagulation air flotation tank 1, meanwhile, the rotating motor 7 starts to work, and the blades 9 start to rotate, so that the coagulant is fully mixed with the water body; after the coagulation reaction is finished, the control cabinet 12 opens the automatic control valve 4 on the sludge and sand discharge pipe 14 at the bottom of the coagulation air flotation tank 1, discharges sludge and gravel out of the system, and the second stage reaction is finished.
And S3, controlling the vacuum pump 8 to start running by the control machine room 12 and simultaneously opening the automatic control valve 4 of the water outlet pipe 13 to generate negative pressure in the ultrafiltration membrane 10, starting filtering the water body in the coagulation air flotation tank 1, finally discharging the treated tunnel wastewater through the water outlet pipe 13, finishing the reaction in the third stage and finishing one-time intermittent tunnel wastewater treatment.
And S4, repeating S1-S3, and carrying out the next batch type tunnel wastewater treatment.
Claims (5)
1. The utility model provides an intermittent type formula tunnel effluent disposal system, includes coagulation air supporting pond (1), catch basin (2), collection sediment pond (3) and switch board (12), its characterized in that: the upper part of the coagulation air flotation tank (1) is provided with a water inlet and is connected with the water collecting tank (2) through a water inlet pipe, the coagulation air flotation tank (1) is internally provided with a stirring and membrane filtering integrated assembly, a dosing tank (11), an air distribution pipe (5) and a dissolved air releaser (6), the stirring and membrane filtering integrated assembly comprises a paddle (9), an ultrafiltration membrane (10), a rotating motor (7), a vacuum-pumping pump (8) and a water outlet pipe (13), the paddle (9) is arranged outside the ultrafiltration membrane (10) in a surrounding manner, the rotating motor (7) is used for driving the paddle (9) to rotate, the vacuum-pumping pump (8) is used for vacuumizing the inner cavity of the ultrafiltration membrane (10), so that water outside the ultrafiltration membrane (10) enters the inner cavity after being filtered by the ultrafiltration membrane (10), one end of the water outlet pipe (13) extends into the inner cavity of the ultrafiltration membrane (10), and the other end vertically penetrates out of the ultrafiltration membrane (10, used for discharging the water filtered by the ultrafiltration membrane (10); the gas distribution pipe (5) is annular and is positioned below the stirring and membrane filtering integrated component, and the dissolved gas releasers (6) are uniformly distributed on the gas distribution pipe (5) in a circumferential manner; the bottom of coagulating air supporting pond (1) is provided with row mud sand discharging pipe (14), and the upper portion of coagulating air supporting pond (1) is provided with the overflow mouth and links to each other with album sediment pond (3) through the overflow pipe be provided with automatic control valve (4) on inlet tube, outlet pipe (13), row mud sand discharging pipe (14) and the overflow pipe respectively.
2. The batch tunnel wastewater treatment system according to claim 1, characterized in that: the number of the blades (9) is four, and the blades are uniformly distributed outside the ultrafiltration membrane (10) in a circumferential mode.
3. The batch tunnel wastewater treatment system according to claim 1, characterized in that: the top of the coagulation air flotation tank (1) is provided with a cover plate for installing a rotating motor (7) and a vacuum pumping pump (8), and a water outlet pipe (13) penetrates out of the bottom of the coagulation air flotation tank (1) downwards.
4. The batch tunnel wastewater treatment system according to claim 1, characterized in that: the coagulation air flotation tank (1) and the slag collecting tank (3) are jointly built.
5. The batch tunnel wastewater treatment system according to claim 1, characterized in that: dissolved air releaser (6) totally six, be provided with below gas distribution pipe (5) with dissolved air releaser (6) one-to-one vertical pipe (5a), vertical pipe (5a) communicate with each other with gas distribution pipe (5), and dissolved air releaser (6) are installed to the end of every vertical pipe (5 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022134699.4U CN213446581U (en) | 2020-09-25 | 2020-09-25 | Intermittent type formula tunnel effluent disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022134699.4U CN213446581U (en) | 2020-09-25 | 2020-09-25 | Intermittent type formula tunnel effluent disposal system |
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| Publication Number | Publication Date |
|---|---|
| CN213446581U true CN213446581U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022134699.4U Active CN213446581U (en) | 2020-09-25 | 2020-09-25 | Intermittent type formula tunnel effluent disposal system |
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|---|---|
| CN (1) | CN213446581U (en) |
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- 2020-09-25 CN CN202022134699.4U patent/CN213446581U/en active Active
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