CN216855947U - Rapid treatment system for railway tunnel construction wastewater - Google Patents
Rapid treatment system for railway tunnel construction wastewater Download PDFInfo
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- CN216855947U CN216855947U CN202123103760.XU CN202123103760U CN216855947U CN 216855947 U CN216855947 U CN 216855947U CN 202123103760 U CN202123103760 U CN 202123103760U CN 216855947 U CN216855947 U CN 216855947U
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Abstract
The utility model relates to a rapid treatment system for wastewater in railway tunnel construction, which belongs to the technical field of sewage treatment and comprises a first regulating tank, a horizontal sedimentation tank, a second regulating tank, an inclined tube sedimentation tank, a clear water tank, a fine filter, a sludge concentration tank, a plate-and-frame filter press, a first emergency dosing device and a second emergency dosing device; the first regulating tank is connected with the horizontal flow sedimentation tank, the horizontal flow sedimentation tank is connected with the second regulating tank, the second regulating tank is connected with the inclined tube sedimentation tank, the inclined tube sedimentation tank is communicated with the clear water tank, the clear water tank is connected with the fine filter, the horizontal flow sedimentation tank is connected with the sludge concentration tank, the inclined tube sedimentation tank is connected with the sludge concentration tank, and the sludge concentration tank is connected with the plate-and-frame filter press. The system has the characteristics of no addition of coagulation and flocculating agents, strong shock resistance, high automation degree, high sludge treatment capacity and the like, and is suitable for treating the wastewater of the railway tunnel construction under different water quality and water quantity conditions.
Description
Technical Field
The utility model relates to a wastewater treatment system, in particular to a rapid treatment system for wastewater in railway tunnel construction, and belongs to the technical field of sewage treatment.
Background
For railway tunnel construction, wastewater generated in the tunnel excavation process is a main water environment pollution source. The direct water of discharging of tunnel construction waste water can arouse the turbidity change of water to change aquatic organisms's survival and the environment of foraging, waste water discharge to irrigation ditch can produce adverse effect to the field irrigation.
The tunnel construction wastewater mainly comes from underground water burst, bedrock fracture water, water for tunnel drilling, tunnel dust fall water burst, wastewater generated by concrete spraying and grouting and the like. The underground water amount in different tunnel construction stages and different sections is greatly different, so that the waste water discharge is unstable, and underground water burst and fissure water in the construction waste water generally account for a large proportion.
The main pollution factor of the tunnel construction wastewater is suspended matters, and the suspended matter content of the individual tunnel construction wastewater can be up to 2000 mg/L. At present, a multistage sedimentation tank and air flotation are adopted for treatment, the treatment is limited by factors such as process, water discharge, field, management and the like, the treatment efficiency is low, the effect is poor, and the daily maintenance cost of personnel is high.
On one hand, due to the reasons that the design of the sedimentation tank is not standard, the daily maintenance and management are not in place, the clearing is not timely and the like, the hydraulic retention time is too short, the treatment effect of the sedimentation tank is poor, and the wastewater is discharged into surrounding natural ditches without being fully treated, thereby causing great adverse effect on the environment.
On the other hand, for reasons such as high treatment standard requirements and the like, the partial tunnels adopt the processes of sand setting, coagulating sedimentation, air flotation, filtration and the like, and the processes comprise the following steps: firstly, an advection grit chamber, an oil separation sedimentation tank and an integrated two-stage air flotation filtering process; secondly, coagulating sedimentation, air flotation and filtration processes; and thirdly, carrying out coagulating sedimentation and filtering processes. However, the cost of equipment, medicament, labor and electricity is high, and the method is not widely applied.
Therefore, the technical problem which needs to be solved urgently in the technical field is to provide a rapid treatment system and a rapid treatment process which have high automation degree, small occupied area and strong anti-load capacity and are suitable for the railway tunnel construction wastewater.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to provide a treatment system based on a composite multilayer filtering technology, which can be used for treating wastewater in railway tunnel construction, and the system has high automation degree, small occupied area and strong load resistance.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a quick processing system for railway tunnel construction waste water which characterized in that: comprises a first adjusting tank, a horizontal flow sedimentation tank, a second adjusting tank, an inclined tube sedimentation tank, a clean water tank, a fine filter, a sludge concentration tank, a plate-and-frame filter press, a first emergency dosing device and a second emergency dosing device; the first adjusting tank is connected with the horizontal flow sedimentation tank, the horizontal flow sedimentation tank is connected with the second adjusting tank, the second adjusting tank is connected with the inclined tube sedimentation tank, the inclined tube sedimentation tank is communicated with the clean water tank, the clean water tank is connected with the fine filter, the horizontal flow sedimentation tank is connected with the sludge concentration tank, the inclined tube sedimentation tank is connected with the sludge concentration tank, and the sludge concentration tank is connected with the plate-and-frame filter press.
Preferably, the first regulating reservoir is provided with a first turbidity sensor, and the first turbidity sensor is positioned on the inner side of the first regulating reservoir.
Preferably, the horizontal sedimentation tank is a multi-guide-plate horizontal sedimentation tank and is provided with a first sludge settling hopper, a second turbidity sensor, a first sludge screw pump and a first bottom sludge discharge pipe, the first emergency dosing device is positioned above the horizontal sedimentation tank, the first sludge settling hopper is communicated with the first sludge screw pump through the first bottom sludge discharge pipe, and the second turbidity sensor is positioned at the bottom of the horizontal sedimentation tank; and a first bottom sludge discharge pipe of the horizontal sedimentation tank is connected with the sludge concentration tank through a first sludge screw pump and a second sludge screw pump.
Preferably, the second equalizing basin is equipped with third turbidity sensor, first liquid level probe and first elevator pump, and third turbidity sensor, first liquid level probe are located the second equalizing basin inboard, and the second equalizing basin is connected with the pipe chute sedimentation tank through first elevator pump and first lifting pipe way.
Preferably, the pipe chute sedimentation tank includes catchment canal, pipe chute, second sludge bucket, fourth turbidity sensor, second mud screw pump and second bottom sludge pipe, and the catchment canal is located pipe chute sedimentation tank upper portion, and the pipe chute is located pipe chute sedimentation tank middle part, and the second sinks the mud bucket and communicates with second mud screw pump through second bottom mud pipe, is equipped with the emergent charge device of second and is located pipe chute sedimentation tank top.
Preferably, a fifth turbidity sensor, a second liquid level probe and a second lifting pump are arranged in the clean water tank, and the clean water tank is connected with the fine filter through the second lifting pump and a second lifting pipeline.
Preferably, the fine filter is provided with a sixth turbidity sensor.
Preferably, the sludge concentration tank is provided with a seventh turbidity sensor and a third liquid level probe.
Preferably, the sludge concentration tank is connected with the plate-and-frame filter press through a third sludge screw pump and a third bottom sludge discharge pipe.
Preferably, the fine filter is an automatic aeration fine filter or a valveless filter.
The utility model also aims to provide a treatment process based on the composite multilayer filtration technology, which can be used for treating the wastewater generated in the railway tunnel construction, and has the advantages of high automation degree, small occupied area and strong load resistance.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the treatment method based on the rapid treatment system for the railway tunnel construction wastewater comprises the following steps:
(1) when the tunnel wastewater is high-turbidity wastewater, the wastewater automatically flows to a first regulating tank and further automatically flows into a horizontal flow sedimentation tank, after most suspended matters are removed in the first regulating tank and the horizontal flow sedimentation tank, the wastewater automatically flows to a second regulating tank, the wastewater is conveyed to an inclined tube sedimentation tank through a first lifting pump, after a part of suspended matters are removed in the inclined tube sedimentation tank, the wastewater automatically flows to a clean water tank at the tail end of the inclined tube sedimentation tank, the turbidity of the wastewater is controlled to be below 200NTU and is lifted to a fine filter through a second lifting pump, after filtration, the effluent turbidity of the wastewater is effectively ensured to be below 10NTU, organic matters in the water are removed, the wastewater reaches the standard and is discharged, the sludge in the horizontal flow sedimentation tank is precipitated to a first sludge bucket, the sludge in the inclined tube sedimentation tank is precipitated to a second sludge bucket, and the sludge in the first sludge bucket and the second sludge bucket are respectively converged to a sludge concentration tank through a first sludge screw pump and a second sludge screw pump, then the sludge is pumped to a plate-and-frame filter press by a third sludge screw pump;
(2) when the tunnel wastewater is medium-turbidity wastewater, the wastewater directly enters an inclined tube sedimentation tank, after treatment, the turbidity is controlled to be below 200NTU, and the wastewater enters a fine filter to be treated and discharged after reaching the standard;
(3) when the tunnel wastewater is low-turbidity wastewater, the wastewater is lifted by the second lifting pump and sent into a fine filter for treatment, and qualified wastewater is directly discharged.
Compared with the prior art, the rapid treatment system for the railway tunnel construction wastewater has the beneficial effects that:
(1) no coagulation and flocculant are added: the system provided by the utility model utilizes the sedimentation characteristic of tunnel wastewater, selects a proper filtering mode for treatment, does not consider adding chemicals in the whole process, but adds an emergency chemical adding device aiming at the characteristics of large change and instability of the quality and quantity of tunnel wastewater, and ensures the treatment efficiency under extreme conditions;
(2) strong impact resistance: because the system of the utility model is provided with the independent regulating tank and the sedimentation tank instead of adopting the regulating pre-sedimentation tank, the functions of the regulating tank and the sedimentation tank are fully exerted, thereby ensuring that the system has stronger shock resistance to the fluctuation of the quality and the quantity of the incoming water and leading the operation of the system to be more stable, safe and reliable;
(3) the automation degree is high: the system fully considers the adoption of automatic control, switches the valves according to the turbidity display of the inlet water, judges whether the inlet water enters the secondary sedimentation tank or not, controls the opening of a water pump of the tank body through two indexes of liquid level and turbidity, adopts hydraulic automatic adjustment control for the automatic aeration fine filter, has higher automation degree, greatly reduces the labor intensity of staff and is convenient for operation and management;
(4) the sludge treatment capacity is high: aiming at the characteristic of high self-compaction of tunnel wastewater sludge, sludge concentration adopts a filter pressing mode for treatment, and mud cakes are transported outwards, so that the requirement of large sludge amount of tunnel wastewater is met.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments patented herein without making any creative effort, shall fall within the scope of protection of the present patent.
Drawings
FIG. 1 is a schematic structural diagram of a rapid treatment system for wastewater from railway tunnel construction according to embodiment 1 of the present invention.
The main part names are as follows:
1 first adjusting tank 2 horizontal sedimentation tank
3 second adjusting tank and 4 inclined tube sedimentation tank
5 clean water basin 6 fine filter
8 plate and frame filter presses in 7 sludge concentration pond
9 first emergency medicine adding device 10 second emergency medicine adding device
11 collecting channel 12 inclined tube
13 first turbidity sensor 14 second turbidity sensor
15 third turbidity sensor 16 fourth turbidity sensor
17 fifth turbidity sensor 18 sixth turbidity sensor
19 seventh turbidity sensor 20 first liquid level probe
21 second liquid level probe 22 third liquid level probe
23 first lift pump 24 second lift pump
25 first sludge settling hopper 26 second sludge settling hopper
27 first sludge screw pump 28 second sludge screw pump
29 third sludge screw pump 30 first lifting pipe
31 second lifting pipe 32 first bottom sludge discharge pipe
33 second bottom sludge discharge pipe 34 third bottom sludge discharge pipe
Detailed Description
The parts used in the present invention are all commercially available parts which are conventional in the art, and the connection manner thereof is a conventional connection manner in the art, unless otherwise specified; the materials used are conventional in the art.
Example 1
FIG. 1 is a schematic structural diagram of a rapid treatment system for wastewater from railway tunnel construction according to embodiment 1 of the present invention; wherein, 1 is a first adjusting tank, 2 is a horizontal flow sedimentation tank, 3 is a second adjusting tank, 4 is an inclined tube sedimentation tank, 5 is a clean water tank, 6 is a fine filter, 7 is a sludge concentration tank, 8 is a plate-and-frame filter press, 9 is a first emergency dosing device, 10 is a second emergency dosing device, 11 is a water collecting channel, 12 is an inclined tube, 13 is a first turbidity sensor, 14 is a second turbidity sensor, 15 is a third turbidity sensor, 16 is a fourth turbidity sensor, 17 is a fifth turbidity sensor, 18 is a sixth turbidity sensor, 19 is a seventh turbidity sensor, 20 is a first liquid level probe, 21 is a second liquid level probe, 22 is a third liquid level probe, 23 is a first lifting pump, 24 is a second lifting pump, 25 is a first sludge settling hopper, 26 is a second sludge settling hopper, 27 is a first sludge screw pump, 28 is a second sludge screw pump, 29 is a third sludge screw pump, 30 is a first lifting pipeline, 31 is a second lifting pipeline, 32 is a first bottom sludge discharge pipe, 33 is a second bottom sludge discharge pipe, and 34 is a third bottom sludge discharge pipe; the embodiment 1 of the utility model discloses a rapid treatment system for wastewater in railway tunnel construction, which comprises a first adjusting tank 1, a horizontal flow sedimentation tank 2, a second adjusting tank 3, an inclined tube sedimentation tank 4, a clean water tank 5, a fine filter 6, a sludge concentration tank 7, a plate-and-frame filter press 8, a first emergency dosing device 9, a second emergency dosing device 10, a water collecting channel 11, an inclined tube 12, a first turbidity sensor 13, a second turbidity sensor 14, a third turbidity sensor 15, a fourth turbidity sensor 16, a fifth turbidity sensor 17, a sixth turbidity sensor 18, a seventh turbidity sensor 19, a first liquid level probe 20, a second liquid level probe 21, a third liquid level probe 22, a first lifting pump 23, a second lifting pump 24, a first sludge hopper 25, a second sludge hopper 26, a first sludge screw pump 27, a second sludge screw pump 28, a third sludge screw pump 29 and a first lifting pipeline 30, a second lifting pipe 31, a first bottom sludge discharge pipe 32, a second bottom sludge discharge pipe 33, a third bottom sludge discharge pipe 34; the first adjusting tank 1 is connected with the horizontal flow sedimentation tank 2, and the first turbidity sensor 13 is positioned at the inner side of the first adjusting tank 1; the first emergency dosing device 9 is positioned at the upper part of the horizontal flow sedimentation tank 2; the horizontal sedimentation tank 2 is a multi-guide-plate horizontal sedimentation tank, the first sludge hopper 25 is connected with a first sludge screw pump 27 through a first bottom sludge discharge pipe 32, and the first sludge screw pump 27 is connected with the sludge concentration tank 7 through a pipeline; the horizontal sedimentation tank 2 is connected with a second adjusting tank 3, and the second adjusting tank 3 is provided with a third turbidity sensor 15, a first liquid level probe 20 and a first lift pump 23; the third turbidity sensor 15 and the first liquid level probe 20 are positioned at the inner side of the second regulating tank 3, and the second regulating tank 3 is connected with the inclined tube sedimentation tank 4 through a first lifting pump 23 and a first lifting pipeline 30; the second emergency dosing device 10 and the water collecting channel 11 are positioned above the inclined tube sedimentation tank 4, the water collecting channel 11 is positioned at the upper part of the inclined tube sedimentation tank 4, the inclined tube 12 is positioned at the middle part of the inclined tube sedimentation tank 4, the fourth turbidity sensor 16 is positioned at the bottom of the inclined tube sedimentation tank 4, the second sludge settling hopper 26 is positioned at the bottom of the inclined tube sedimentation tank 4 and is connected with the second sludge screw pump 28 through a second bottom sludge discharge pipe 33, and the second sludge screw pump 28 is connected with the sludge concentration tank 7 through a pipeline; the inclined tube sedimentation tank 4 is communicated with a clean water tank 5, the fifth turbidity sensor 17 and the second liquid level probe 21 are positioned at the inner side of the clean water tank 5, and the clean water tank 5 is connected with the fine filter 6 through a second lifting pump 24 and a second lifting pipeline 31; the seventh turbidity sensor 19 and the third liquid level probe 22 are positioned at the inner side of the sludge concentration tank 7; the sludge concentration tank 7 is connected with the plate-and-frame filter press 8 through a third sludge screw pump 29 and a third bottom sludge discharge pipe 34.
The technological process of the rapid treatment system for the railway tunnel construction wastewater comprises the following steps:
because the quality and the quantity of the construction wastewater are constantly changed, the first regulating tank 1 is provided with a first turbidity sensor 13, the horizontal flow sedimentation tank 2 is provided with a first emergency dosing device 9, and when the quantity or the turbidity of the inlet water far exceeds the treatment capacity, the first emergency dosing device 9 is started to maintain the stability of the quality of the outlet water; the horizontal sedimentation tank 2 adopts a multi-guide-plate horizontal sedimentation tank and is provided with a first sludge settling hopper 25 and a first bottom sludge discharge pipe 32, according to the experimental effect of natural sedimentation, the flow speed of the horizontal sedimentation tank 2 is reduced, the horizontal flow speed is controlled to be about 7mm/s, so that silt quickly sinks when meeting resistance, the first sludge settling hopper 25 is arranged at the bottom of the horizontal sedimentation tank 2, the sludge in the first sludge settling hopper 25 is connected with a first sludge screw pump 27 through the first bottom sludge discharge pipe 32, and the first sludge screw pump 27 realizes automatic control according to the turbidity of a second turbidity sensor 14; the horizontal flow sedimentation tank 2 is communicated with a second adjusting tank 3;
a first lifting pump 23 is arranged on the right side wall of the second adjusting tank 3 to ensure the water pressure and water quantity required by the subsequent process;
the second adjusting tank 3 is provided with a third turbidity sensor 15, the second adjusting tank 3 is also used as a clean water tank under the conditions of stable quality and low turbidity of the incoming water, and simultaneously, the sedimentation effect of the horizontal sedimentation tank 2 can be monitored, and when the incoming water turbidity is low and the effluent turbidity is lower than 150NTU, the sewage is treated by the horizontal sedimentation tank 2, then is regulated and stored by the second adjusting tank 3 and directly enters the fine filter 6 for treatment; when the water quality and the water quantity of the incoming water are changed too much, the turbidity of the incoming water is too high, and the turbidity of the outgoing water is 400-150 NTU, in order to ensure the stable operation of the system, the second regulating tank 3 regulates the sewage to enter the inclined tube sedimentation tank 4 for filtration treatment, and then enters the fine filter 6 for treatment;
the second adjusting tank 3 is communicated with the inclined tube sedimentation tank 4 through a first lifting pump 23 and a first lifting pipeline 30, the inclined tube sedimentation tank 4 is provided with a water collecting channel 11, an inclined tube 12, a second sludge hopper 26 and a fourth turbidity sensor 16, the sludge in the second sludge hopper 26 is connected with a second sludge screw pump 28 through a second bottom sludge discharge pipe 33, and the second sludge screw pump 28 realizes automatic control according to the turbidity of the fourth turbidity sensor 16;
the inclined tube sedimentation tank 4 is connected with a clean water tank 5; the clean water tank 5 is connected with the fine filter 6 through a second lifting pump 24 and a second lifting pipeline 31, the fine filter 6 utilizes gravity self-flow to filter, a power system does not need to be added, hydraulic automation is realized, and automatic back washing can be realized by means of the self-production quantity;
a first bottom sludge discharge pipe 32 in the horizontal sedimentation tank 2 is communicated with the sludge concentration tank 7 through a first sludge screw pump 27 and a second bottom sludge discharge pipe 33 in the inclined tube sedimentation tank 4 through a second sludge screw pump 28; the sludge concentration tank 7 is provided with a seventh turbidity sensor 19 and a third liquid level probe 22, the sludge concentration tank 7 continuously stores sludge for 12 hours, after 5 hours of sedimentation, the bottom sludge is pumped to the plate-and-frame filter press 8 through a third bottom sludge discharge pipe 34 and a third sludge screw pump 29, the plate-and-frame filter press 8 presses the sludge to sludge cakes, and the sludge cakes are transported outwards;
when the tunnel wastewater is high-turbidity wastewater, the wastewater automatically flows to the first regulating tank 1 and further automatically flows into the horizontal sedimentation tank 2, after most suspended matters are removed in the first regulating tank 1 and the horizontal sedimentation tank 2, the wastewater automatically flows to the second regulating tank 3, flows to the inclined tube sedimentation tank 4 through the first lifting pump 23, further removes a part of suspended matters (SS) in the inclined tube sedimentation tank 4, then automatically flows to the clean water tank 5 at the tail end of the inclined tube sedimentation tank 4, the turbidity of the wastewater is controlled to be below 200NTU, and then is lifted to the fine filter 6 through the second lifting pump 24, the effluent turbidity of the wastewater is effectively ensured to be below 10NTU after being filtered, organic matters in the water are removed, the wastewater reaches the standard and is discharged, the sludge in the horizontal sedimentation tank 2 is precipitated to the first sludge hopper 25, the sludge in the inclined tube sedimentation tank 4 is precipitated to the second sludge hopper 26, and the sludge in the first sludge hopper 25 and the second sludge 26 are respectively passed through the first screw pump 27, The second sludge screw pump 28 is converged into the sludge concentration tank 7, and then is converged into the plate-and-frame filter press 8 through the third sludge screw pump 29;
when the tunnel wastewater is medium-turbidity wastewater, the wastewater directly enters the inclined tube sedimentation tank 4, after treatment, the turbidity is controlled to be below 200NTU, and the wastewater enters the fine filter 6 for treatment and is discharged after reaching the standard;
when the tunnel wastewater is low-turbidity wastewater, the wastewater is lifted by the second lifting pump 24 and sent to the fine filter 6 for treatment, qualified wastewater is directly discharged, and the fine filter 6 is internally provided with a composite multi-layer filter material.
The fine filter is an automatic aeration fine filter or a valveless filter.
According to the rapid treatment system for the railway tunnel construction wastewater, the sedimentation characteristic of the tunnel wastewater is utilized, and a proper filtering mode is selected for treatment, so that no medicine can be added in the whole process, and the dosage of the medicine is greatly reduced, so that the cost of the medicine is reduced; but to tunnel waste water quality of water yield change big, unstable characteristics, increased emergent medication dosing device, guarantee the treatment effeciency under extreme condition.
The rapid treatment system for the railway tunnel construction wastewater carries out automatic monitoring on the main process flow, and the remote control system carries out unified control and management, thereby reducing the workload of field managers, improving the use efficiency of equipment, reducing the personnel cost and monitoring the water quality treatment condition of the construction wastewater in real time.
The system has the characteristics of no addition of coagulation and flocculating agents, strong shock resistance, high automation degree, high sludge treatment capacity and the like, and is suitable for treating the wastewater of the railway tunnel construction under different water quality and water quantity conditions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a quick processing system for railway tunnel construction waste water which characterized in that: comprises a first adjusting tank, a horizontal flow sedimentation tank, a second adjusting tank, an inclined tube sedimentation tank, a clean water tank, a fine filter, a sludge concentration tank, a plate-and-frame filter press, a first emergency dosing device and a second emergency dosing device; the first adjusting tank is connected with the horizontal flow sedimentation tank, the horizontal flow sedimentation tank is connected with the second adjusting tank, the second adjusting tank is connected with the inclined tube sedimentation tank, the inclined tube sedimentation tank is communicated with the clean water tank, the clean water tank is connected with the fine filter, the horizontal flow sedimentation tank is connected with the sludge concentration tank, the inclined tube sedimentation tank is connected with the sludge concentration tank, and the sludge concentration tank is connected with the plate-and-frame filter press.
2. The rapid treatment system for wastewater from railway tunnel construction according to claim 1, wherein: first equalizing basin is equipped with first turbidity sensor, and first turbidity sensor is located first equalizing basin inboard.
3. The rapid treatment system for wastewater from railway tunnel construction according to claim 2, characterized in that: the horizontal sedimentation tank is a multi-guide-plate horizontal sedimentation tank and is provided with a first sludge hopper, a second turbidity sensor, a first sludge screw pump and a first bottom sludge discharge pipe, the first emergency dosing device is positioned above the horizontal sedimentation tank, the first sludge hopper is communicated with the first sludge screw pump through the first bottom sludge discharge pipe, and the second turbidity sensor is positioned at the bottom of the horizontal sedimentation tank; and a first bottom sludge discharge pipe of the horizontal sedimentation tank is connected with the sludge concentration tank through a first sludge screw pump and a second sludge screw pump.
4. The rapid treatment system for wastewater from railway tunnel construction according to claim 3, characterized in that: the second equalizing basin is equipped with third turbidity sensor, first liquid level probe and first elevator pump, and third turbidity sensor, first liquid level probe are located the second equalizing basin inboard, and the second equalizing basin is connected with the pipe chute sedimentation tank through first elevator pump and first lifting line way.
5. The rapid treatment system for wastewater from railway tunnel construction according to claim 4, wherein: the pipe chute sedimentation tank comprises a water collecting channel, a pipe chute, a second sludge hopper, a fourth turbidity sensor, a second sludge screw pump and a second bottom sludge pipe, wherein the water collecting channel is positioned on the upper part of the pipe chute sedimentation tank, the pipe chute is positioned in the middle of the pipe chute sedimentation tank, the second sludge hopper is communicated with the second sludge screw pump through a second bottom sludge discharge pipe, and a second emergency dosing device is arranged above the pipe chute sedimentation tank.
6. The rapid treatment system for wastewater from railway tunnel construction according to claim 5, wherein: and a fifth turbidity sensor, a second liquid level probe and a second lifting pump are arranged in the clean water tank, and the clean water tank is connected with the fine filter through the second lifting pump and a second lifting pipeline.
7. The rapid treatment system for wastewater from railway tunnel construction according to claim 6, wherein: and the fine filter is provided with a sixth turbidity sensor.
8. The rapid treatment system for wastewater from railway tunnel construction according to claim 7, wherein: and the sludge concentration tank is provided with a seventh turbidity sensor and a third liquid level probe.
9. The rapid treatment system for wastewater from railway tunnel construction according to claim 8, wherein: and the sludge concentration tank is connected with the plate-and-frame filter press through a third sludge screw pump and a third bottom sludge discharge pipe.
10. The rapid treatment system for wastewater from railway tunnel construction according to claim 9, wherein: the fine filter is an automatic aeration fine filter or a valveless filter.
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| CN115818901A (en) * | 2023-01-06 | 2023-03-21 | 中国电建集团北京勘测设计研究院有限公司 | Underground cavern production wastewater treatment system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115818901A (en) * | 2023-01-06 | 2023-03-21 | 中国电建集团北京勘测设计研究院有限公司 | Underground cavern production wastewater treatment system and method |
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