CN220485374U - Treatment device for coal-containing wastewater of thermal power plant - Google Patents
Treatment device for coal-containing wastewater of thermal power plant Download PDFInfo
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- CN220485374U CN220485374U CN202322359585.3U CN202322359585U CN220485374U CN 220485374 U CN220485374 U CN 220485374U CN 202322359585 U CN202322359585 U CN 202322359585U CN 220485374 U CN220485374 U CN 220485374U
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- water
- pipe
- coal
- water outlet
- containing wastewater
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- 239000003245 coal Substances 0.000 title claims abstract description 34
- 238000011282 treatment Methods 0.000 title claims abstract description 32
- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000010865 sewage Substances 0.000 claims abstract description 22
- 239000010802 sludge Substances 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 14
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 239000003818 cinder Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of wastewater treatment, and particularly relates to a treatment device for coal-containing wastewater of a thermal power plant, which comprises a buffer tank and a water purifier, wherein a first water inlet and a first water outlet are formed in the side wall of the buffer tank, and a first sludge discharge valve is arranged at the bottom of the buffer tank; the first water inlet is connected with a coal-containing wastewater drain pipe, the first water outlet is connected with a sewage conveying pipe, the sewage conveying pipe is connected with a second water inlet of the water purifier, the second water outlet of the water purifier is connected with a water outlet pipe, the water outlet pipe comprises a section of horizontal pipe, and an online turbidity detector is arranged on the horizontal pipe. The utility model improves the utilization rate of the water purifier, reduces the treatment pressure, reduces the specification and the size of the water purifier and reduces the equipment cost.
Description
Technical Field
The utility model belongs to the technical field of wastewater treatment, and particularly relates to a treatment device for coal-containing wastewater of a thermal power plant.
Background
When a thermal power unit of a thermal power plant works, in order to prevent a coal conveying system from generating dust and polluting the environment, the coal conveying trestle, the transfer station and the coal bin need to be washed regularly, so that coal-containing wastewater is generated. The existing coal-containing wastewater treatment process, such as a coal mine sewage treatment system of China patent CN208454692U, needs to achieve the recovery requirement through treatment of a plurality of steps of conditioning, precipitation, coagulation, clarification, filtration and the like.
Under the application environment of thermal power plant, pollutant in the coal-containing wastewater is single relatively, can carry out simple treatment to the coal-containing slime waste water and retrieve, and the circulation is used for the washing to coal conveying equipment, practices thrift processing cost, like CN218811028U discloses a novel coal-containing waste water centralized processing device, through filterable mode, can satisfy waste water cyclic utilization's purpose. However, because the generated coal-containing wastewater flushed by the thermal power plant is intermittently discharged and discharged into the water purifier once during water discharge, the water purifier generally has larger volume and plays a role in temporary storage, and the large-volume water purifier has large single-time treatment capacity, large treatment pressure, low utilization rate and high equipment cost, and is idle after rapid treatment.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a treatment device for coal-containing wastewater of a thermal power plant, which improves the utilization rate of a water purifier and reduces the cost.
The utility model relates to a treatment device for coal-containing wastewater of a thermal power plant, which comprises a buffer tank and a water purifier, wherein a first water inlet and a first water outlet are formed in the side wall of the buffer tank, and a first sludge discharge valve is arranged at the bottom of the buffer tank; the first water inlet is connected with a coal-containing wastewater drain pipe, the first water outlet is connected with a sewage conveying pipe, the sewage conveying pipe is connected with a second water inlet of the water purifier, the second water outlet of the water purifier is connected with a water outlet pipe, the water outlet pipe comprises a section of horizontal pipe, and an online turbidity detector is arranged on the horizontal pipe.
According to the utility model, the buffer tank is arranged, so that the capacity requirement on the water purifier is reduced, intermittent treatment is changed into continuous treatment, the instantaneous sewage access amount of the water purifier is reduced, the utilization rate of the water purifier is improved, the treatment pressure of the water purifier is reduced, the volume requirement of the water purifier is reduced, and the equipment cost is reduced.
Preferably, the water outlet pipe comprises a section of horizontal pipe with the diameter of more than or equal to 500mm, an inclined sampling pipe is arranged at one end of the horizontal pipe, a valve is arranged on the sampling pipe, and an online turbidity detector is inserted into the sampling pipe.
Preferably, the drop between the highest position and the lowest position of the water outlet pipe is less than or equal to 0.4 meter; preventing the water flow rate from affecting the detection accuracy too fast.
Preferably, the sampling tube is angled 45 ° from vertical.
Preferably, the water outlet pipe is connected with the water storage tank.
Preferably, a buffer net is arranged in the buffer tank, and the buffer net is higher than the first water inlet and lower than the first water outlet; can realize the first-stage filtration, block partial cinder that the particle diameter is great in the buffer network below.
Preferably, the height of the first water inlet is 1/4 part of the buffer tank close to the bottom end, and the first water inlet of the buffer tank is lower, so that the water inlet impact force can be reduced when a large amount of water is fed.
Preferably, the sewage conveying pipe is provided with a water pump.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The utilization rate of the water purifier is improved, the treatment pressure is reduced, the specification and the size of the water purifier are reduced, and the equipment cost is reduced.
(2) The buffer tank is used for buffering the impact force of water inflow, the gravitational potential energy difference caused by the reduction of the volume of the water purifier is reduced, the impact force caused by water inflow is reduced, and the service life is prolonged.
(3) The buffer tank can realize primary treatment, remove cinder with larger obvious grain size and lighten the treatment pressure of the water purifier.
(4) The utility model is suitable for the treatment of the coal slime sewage with single sludge content,
drawings
FIG. 1 is a front elevational view of the overall structure of the present utility model;
FIG. 2 is a perspective view of the surge tank of the present utility model;
in the figure: 1. a buffer tank; 11. a first water inlet; 12. a first water outlet; 13. a first sludge discharge valve; 14. a buffer net; 2. a water purifier; 21. a second water inlet; 22. a second water outlet; 23. a second sludge discharge valve; 3. a sewage delivery pipe; 4. a water pump; 5. a water outlet pipe; 6. and (5) a sampling tube.
Detailed Description
The technical scheme of the utility model will be clearly and completely described below with reference to the accompanying drawings.
As shown in figures 1 and 2, a buffer tank 1 is arranged in the water inlet direction of a water purifier 2, a first water inlet 11 and a first water outlet 12 are arranged on the lower position of the side wall of the buffer tank 1, and a first sludge discharge valve 13 is arranged at the bottom of the buffer tank 1. The first water inlet 11 is connected with a drainage pipe of the coal-containing wastewater, the height of the first water inlet 11 is 1/4 of the position of the buffer tank 1 close to the bottom end, and the sewage for flushing the coal conveying equipment enters from the first water inlet 11; the first water outlet 12 is connected with a sewage conveying pipe 3, a water pump 4 is arranged on the sewage conveying pipe 3, the other end of the sewage conveying pipe 3 is connected with a second water inlet 21 of the water purifier 2,
the water purifier 2 can adopt a multi-layer filter purifier or a flocculation filter purifier. The water purifier 2 is provided with a second sludge discharge valve 23. The second water outlet 22 of the water purifier 2 is connected with a water outlet pipe 5, and the water outlet pipe 5 is connected with a water storage tank (not shown in the figure). The highest position and the lowest position of the water outlet pipe 5 fall by 0.4 meter, the water outlet pipe 5 comprises a section of 500mm horizontal pipe, one end of the water purifier 2 of the horizontal pipe is provided with an inclined sampling pipe 6, an included angle between the sampling pipe 6 and the vertical direction is 45 degrees, a valve is arranged on the sampling pipe 6, and an online turbidity detector is inserted into the sampling pipe 6. The on-line turbidity detector calculates the turbidity of water by measuring the intensity of transmitted light or scattered light after the infrared light sent by the transmitter on the sensor is absorbed, reflected and scattered by the measured object in the transmission process.
When the treatment capacity is large, a plurality of water purifiers 2 are arranged, the water inlets of the water purifiers 2 are connected to one or a plurality of buffer tanks 1 through a plurality of sewage conveying pipes 3, the water outlet pipes 5 are connected with a main pipe, and the online turbidity detector is arranged on the horizontal section of the main pipe.
The working principle of the utility model is as follows:
the coal-containing wastewater enters the buffer tank 1 from the first water inlet 11, the buffer effect can be achieved when the instantaneous water inflow is large due to the fact that the position of the first water inlet 11 is low, the sewage liquid level rises more gradually, the buffer net 14 plays a role in buffering and filtering coal cinder, coal cinder with larger particle size in water is isolated below the buffer net 14, sewage on the upper layer of the buffer net 14 enters the water purifier 2 through the first water outlet 12 and the sewage conveying pipe 3, the water purifier 2 starts to work, water continuously enters the process, and the buffer tank 1 plays a role in temporarily storing the sewage simultaneously, so that intermittent treatment is changed into continuous treatment under the condition that the total treatment amount is unchanged and the sewage discharge interval is unchanged, the sewage access amount of the water purifier 2 is reduced, the utilization rate of the water purifier 2 is improved, the volume of the water purifier 2 is reduced, and the water quantity of treated by 5t/h of the single water purifier 2 is reduced. The water yield of the water purifier 2 is uniform and slow. The device adopts online turbidity meter to detect the play water of water purifier 2, because water purifier 2 water yield is even and slower, sets up the static pressure that the sampling port can satisfy turbidity detection required through the horizontal tube. The filter material of the water purifier 2 can be replaced according to the detection data of the online turbidity meter so as to ensure a stable treatment effect. After a period of continuous treatment, the filtered residue is discharged through the first sludge discharge valve 13 and the second sludge discharge valve 23, and this portion of coal may be recovered by connecting a thickener.
Claims (7)
1. The treatment device for the coal-containing wastewater of the thermal power plant is characterized by comprising a buffer tank (1) and a water purifier (2), wherein a first water inlet (11) and a first water outlet (12) are formed in the side wall of the buffer tank (1), and a first sludge discharge valve (13) is arranged at the bottom of the buffer tank; the first water inlet (11) is connected with a coal-containing wastewater drain pipe, the first water outlet (12) is connected with a sewage conveying pipe (3), the sewage conveying pipe (3) is connected with a second water inlet (21) of the water purifier (2), a second water outlet (22) of the water purifier (2) is connected with a water outlet pipe (5), the water outlet pipe (5) comprises a section of horizontal pipe, and an online turbidity detector is arranged on the horizontal pipe.
2. The treatment device for the coal-containing wastewater of the thermal power plant according to claim 1, wherein the water outlet pipe (5) comprises a section of horizontal pipe with the diameter of more than or equal to 500mm, an inclined sampling pipe (6) is arranged at one end of the horizontal pipe, which is far away from the water purifier (2), a valve is arranged on the sampling pipe (6), and an online turbidity detector is inserted into the sampling pipe (6).
3. The treatment device of the coal-containing wastewater of the thermal power plant according to claim 2, wherein the drop between the highest position and the lowest position of the water outlet pipe (5) is less than or equal to 0.4 meter.
4. A treatment plant for coal-containing waste water of a thermal power plant according to claim 2, characterized in that the sampling tube (6) is inclined at 45 ° to the vertical.
5. The treatment device of coal-containing wastewater of a thermal power plant according to claim 1, wherein the water outlet pipe (5) is connected with a water storage tank.
6. The treatment device of the coal-containing wastewater of the thermal power plant according to claim 1, wherein a buffer net (14) is arranged in the buffer tank (1), and the buffer net (14) is higher than the first water inlet (11) and lower than the first water outlet (12).
7. The treatment device of the coal-containing wastewater of the thermal power plant according to claim 1, wherein the wastewater conveying pipe (3) is provided with a water pump (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322359585.3U CN220485374U (en) | 2023-08-31 | 2023-08-31 | Treatment device for coal-containing wastewater of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322359585.3U CN220485374U (en) | 2023-08-31 | 2023-08-31 | Treatment device for coal-containing wastewater of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220485374U true CN220485374U (en) | 2024-02-13 |
Family
ID=89837592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322359585.3U Active CN220485374U (en) | 2023-08-31 | 2023-08-31 | Treatment device for coal-containing wastewater of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220485374U (en) |
-
2023
- 2023-08-31 CN CN202322359585.3U patent/CN220485374U/en active Active
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