CN219983997U - Structure for reducing disturbance of backwash wastewater to supernatant of reuse water tank - Google Patents
Structure for reducing disturbance of backwash wastewater to supernatant of reuse water tank Download PDFInfo
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- CN219983997U CN219983997U CN202321105563.8U CN202321105563U CN219983997U CN 219983997 U CN219983997 U CN 219983997U CN 202321105563 U CN202321105563 U CN 202321105563U CN 219983997 U CN219983997 U CN 219983997U
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- pond
- supernatant
- water tank
- water
- reuse
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 239000002351 wastewater Substances 0.000 title claims abstract description 48
- 239000006228 supernatant Substances 0.000 title claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 27
- 210000005056 cell body Anatomy 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000005192 partition Methods 0.000 abstract 3
- 238000004064 recycling Methods 0.000 description 21
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses a structure for reducing disturbance of backwash wastewater on supernatant of a reuse water tank, which comprises a tank body, wherein the inner wall of the tank body is connected with a partition plate, the partition plate divides the tank body into a water tank a and a water tank b, a mounting opening is formed in the partition plate, an electric gate is arranged in the mounting opening, a water inlet is formed in the side wall of the water tank a, and a water draining pipe opening and a sewage draining pipe opening are respectively formed in the side wall of the water tank b. According to the utility model, the discharge of the back flush wastewater and the precipitation of the reuse water tank are carried out separately through the reuse water tank structure and the control method, so that the influence of the discharge of the indirect back flush wastewater on the precipitation is effectively avoided, the disturbance of the back flush wastewater on the supernatant of the reuse water tank is effectively reduced, the turbidity of the supernatant of the reuse water tank is reduced, the precipitation time reaching the standard of the turbidity of the supernatant of the reuse water tank is shortened, the quality of the reuse water during the reuse of the supernatant is improved, the impact of the reuse water on raw water is reduced, and the water production quality is improved.
Description
Technical Field
The utility model relates to the technical field of back flushing, in particular to a structure for reducing disturbance of back flushing wastewater to supernatant of a reuse water tank.
Background
Most urban water plants take water from surface water sources such as rivers, lakes or reservoirs, and the like, and pollutants in raw water are removed by adopting conventional processes such as coagulation, precipitation, filtration, disinfection and the like to produce finished water meeting the standard. But a large amount of production wastewater is generated in the water production process of the water plant, and the backwash wastewater of the filter tank of the water plant accounts for about 3-8% of the water yield of the water plant. The production wastewater of most of water plants in China in early days is basically discharged directly without treatment or is discharged into a water body through a municipal drainage pipe network, which causes a certain pollution to the environment and wastes water resources.
The new emission standard in China requires the water plant to realize zero emission, and the production wastewater of the water plant is forced to be recycled, so that the newly built water plant always builds recycling facilities. The water factory waste water recycling generally takes filter tank back flushing waste water as a main part, and has two recycling modes of direct recycling and indirect recycling. The direct recycling is to collect the back flush wastewater or sludge water supernatant into a recycling water tank, then return the back flush wastewater or sludge water supernatant to the water inlet end of a water plant to be mixed with raw water through a water pump, and then enter the water treatment process flow again. Indirect recycling refers to recycling of production wastewater after treatment, and common treatment methods include precipitation, micro-sand auxiliary precipitation, particle bed filtration, air flotation, membrane filtration and the like, wherein the common treatment methods include precipitation and filtration, namely, a mode of pre-precipitating filter tank back flushing wastewater for recycling. However, because the discharge of the back flush wastewater has indirection, when the supernatant is pumped by the reuse water pump, the back flush wastewater produces disturbance on the precipitation of the supernatant in the reuse water tank when being discharged into the reuse water tank, so that the turbidity of the reused supernatant is increased, and the reuse is influenced.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a structure for reducing disturbance of backwash wastewater on supernatant of a reuse water tank, which can effectively reduce disturbance of backwash wastewater on supernatant of the reuse water tank, reduce turbidity of supernatant of the reuse water tank and improve quality of reuse water.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a reduce structure that backwash waste water disturbed retrieval and utilization pond supernatant, includes the cell body, the cell body inner wall is connected with the baffle, and the baffle separates the cell body into pond a and pond b, is equipped with the installing port on the baffle, installs electronic gate in the installing port, and pond a's lateral wall is equipped with the water inlet, and pond b's lateral wall is equipped with drainage mouth of pipe and blowdown mouth of pipe respectively, and retrieval and utilization water pump and blowdown pump are installed to drainage mouth of pipe and blowdown mouth of pipe one-to-one.
Preferably, the tops of the pool a and the pool b are provided with a first ultrasonic liquid level meter and a second ultrasonic liquid level meter in one-to-one correspondence.
Preferably, the water tank b is internally suspended with an in-line turbidity meter.
Preferably, the bottom of the tank body is inclined, and the sewage draining pipe orifice is positioned at the lowest part of the tank body.
Preferably, the water inlet is provided with a flowmeter.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the discharge of the back flush wastewater and the precipitation of the reuse water tank are carried out separately through the reuse water tank structure and the control method, so that the influence of the discharge of the indirect back flush wastewater on the precipitation is effectively avoided, the disturbance of the back flush wastewater on the supernatant of the reuse water tank is effectively reduced, the turbidity of the supernatant of the reuse water tank is reduced, the precipitation time reaching the standard of the turbidity of the supernatant of the reuse water tank is shortened, the quality of the reuse water during the reuse of the supernatant is improved, the impact of the reuse water on raw water is reduced, and the water production quality is improved.
Drawings
In order to more particularly and intuitively illustrate an embodiment of the present utility model or a technical solution in the prior art, a brief description of the drawings is provided below, which are required to be used in the description of the embodiment or the prior art.
FIG. 1 is a view of a construction of a reuse pool;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a control flow chart of the electric gate 2;
fig. 4 is a control flow chart of the reuse water pump 7.
In the figure: baffle 1, electric gate 2, online turbidimeter 3, water inlet 4, first ultrasonic level gauge 5, second ultrasonic level gauge 6, retrieval and utilization water pump 7, dredge pump 8, drain pipe orifice 9, blowdown pipe orifice 10, pond a11, pond b12, flowmeter 13.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-2, a structure for reducing disturbance of backwash wastewater to supernatant of a reuse pond comprises a pond body, wherein a baffle plate 1 is connected to the inner wall of the pond body, the baffle plate 1 divides the pond body into a pond a11 and a pond b12, a mounting opening is formed in the baffle plate 1, an electric gate 2 is mounted in the mounting opening, a water inlet 4 is formed in the side wall of the pond a11, a water draining pipe orifice 9 and a sewage draining pipe orifice 10 are respectively formed in the side wall of the pond b12, and a reuse water pump 7 and a sewage draining pump 8 are mounted in one-to-one correspondence with the water draining pipe orifice 9 and the sewage draining pipe orifice 10.
In the embodiment, a first ultrasonic liquid level meter 5 and a second ultrasonic liquid level meter 6 are arranged at the tops of a pool a11 and a pool b12 in a one-to-one correspondence manner, and an online turbidity meter 3 is suspended inside the pool b 12.
In this embodiment, the bottom of the tank body is inclined, and the sewage pipe orifice 10 is positioned at the lowest position of the tank body, the bottom mud of the tank automatically flows to the sewage pump 8 at the lowest position, so that the sewage pump 8 can continuously pump the bottom mud, and the water inlet 4 is provided with the flowmeter 13.
When no backwash wastewater arrives, the electric gate 2 is opened, the water tank a11 and the water tank b12 form a whole, the recycling water pump 7 pumps the supernatant after precipitation, when backwash wastewater arrives, the electric gate 2 is closed, the backwash wastewater enters the water tank a11, the water tank b12 can continuously pump the supernatant, the impact of intermittently discharged backwash wastewater on the precipitation process of the recycling water tank is reduced, and the turbidity of the recycled supernatant can be effectively reduced.
The PLC control unit monitors the liquid level, turbidity and water flow in the tank body in real time according to the first ultrasonic liquid level meter 5, the second ultrasonic liquid level meter 6, the online turbidity meter 3 and the flowmeter 13, and controls the liftable electric gate 2, the reuse water pump 7 and the sewage pump 8 according to monitoring data.
Whether the back flush waste water is discharged or not can be judged according to the flowmeter 13, the back flush waste water enters the water tank a11 through the water inlet 4, and the lifting electric gate 2 can be controlled to open and close according to the liquid levels of the water tank a11 and the water tank b12 and whether the back flush waste water is discharged or not, and the control flow chart is shown in figure 3.
The water tank a11 enters the back flush wastewater for the first time, and when the liquid level of the back flush wastewater reaches the high liquid level of the water tank a11, the electric gate 2 can be opened, so that the back flush wastewater flows into the water tank b 12. When the liquid level of the pool b12 does not reach the liquid level 1 of the pool b12 and no backwash wastewater is discharged, the recycling water pump 7 does not work, the electric gate 2 is opened, and the pool a11 and the pool b12 form a whole to carry out sedimentation; when the liquid level of the pool b12 reaches the liquid level 1 of the pool b12, the electric gate 2 is closed, so that the pool b12 is not fed with water any more and precipitation is carried out. When the sedimentation reaches the requirement and the liquid level of the water tank b12 reaches the liquid level 2 of the water tank b12 after the recycling water pump 7 and the sewage pump 8 work, the electric gate 2 can be opened, so that the water tank b12 continuously enters the backwash wastewater and carries out the sedimentation of the next step.
After the liquid level of the water tank b12 reaches the liquid level 1 of the water tank b12 to switch off or when no backwash wastewater is discharged from the water tank a11, the water tank b12 performs sedimentation for a certain time, and when the turbidity of the supernatant liquid of the water tank b12 monitored by the online turbidity meter 3 which is the same as the water pump 7 is lower than a set value, the water pump 7 is started for recycling the supernatant liquid; when the turbidity monitored by the online turbidity meter 3 is higher than the set value, the water tank b12 continues to precipitate. When the liquid level of the pool b12 reaches the liquid level 2 of the pool b12, the recycling water pump 7 stops working. When the liquid level of the water tank a11 reaches the high liquid level of the water tank a11 when the back flush wastewater is discharged too much, at the moment, even if the turbidity of the supernatant liquid of the water tank b12 is higher than a set value, the recycling water pump 7 still starts to discharge water, so that the back flush wastewater is ensured not to overflow after entering the water tank a11, and the control flow is shown in figure 4.
According to the recycling water tank structure and the control method, the discharge of the back flush wastewater and the precipitation of the recycling water tank are carried out separately, so that the influence of the discharge of the indirect back flush wastewater on the precipitation is effectively avoided, the precipitation time of the turbidity of the supernatant fluid of the recycling water tank reaching the standard is shortened, the quality of the recycled water during recycling the supernatant fluid is improved, the impact of the recycled water on raw water is reduced, and the water production quality is improved.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The utility model provides a reduce structure of backwash waste water to retrieval and utilization pond supernatant disturbance, includes cell body and PLC control unit, a serial communication port, cell body inner wall is connected with baffle (1), and baffle (1) are separated the cell body into pond a (11) and pond b (12), are equipped with the installing port on baffle (1), install electric gate (2) in the installing port, and the lateral wall of pond a (11) is equipped with water inlet (4), and the lateral wall of pond b (12) is equipped with drainage mouth of pipe (9) and blowdown mouth of pipe (10) respectively, and retrieval and utilization water pump (7) and blowdown pump (8) are installed with blowdown mouth of pipe (10) one-to-one.
2. The structure for reducing disturbance of backwash wastewater on the supernatant of a reuse pond according to claim 1, wherein the tops of the pond a (11) and the pond b (12) are provided with a first ultrasonic liquid level meter (5) and a second ultrasonic liquid level meter (6) in one-to-one correspondence.
3. A structure for reducing disturbance of backwash wastewater to recycled pond supernatant according to claim 2, wherein the pond b (12) is internally suspended with an on-line turbidity meter (3).
4. A structure for reducing disturbance of backwash wastewater to supernatant of a reuse pond according to claim 3, wherein the bottom of the pond body is inclined, and a sewage drain nozzle (10) is positioned at the lowest part of the pond body.
5. The structure for reducing disturbance of backwash wastewater on supernatant fluid in a reuse pond according to claim 4, wherein a flowmeter (13) is installed at the water inlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321105563.8U CN219983997U (en) | 2023-05-09 | 2023-05-09 | Structure for reducing disturbance of backwash wastewater to supernatant of reuse water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321105563.8U CN219983997U (en) | 2023-05-09 | 2023-05-09 | Structure for reducing disturbance of backwash wastewater to supernatant of reuse water tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219983997U true CN219983997U (en) | 2023-11-10 |
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ID=88603907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321105563.8U Active CN219983997U (en) | 2023-05-09 | 2023-05-09 | Structure for reducing disturbance of backwash wastewater to supernatant of reuse water tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219983997U (en) |
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2023
- 2023-05-09 CN CN202321105563.8U patent/CN219983997U/en active Active
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