CN220642844U - Dichloromethane waste water treatment system - Google Patents
Dichloromethane waste water treatment system Download PDFInfo
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- CN220642844U CN220642844U CN202322241264.3U CN202322241264U CN220642844U CN 220642844 U CN220642844 U CN 220642844U CN 202322241264 U CN202322241264 U CN 202322241264U CN 220642844 U CN220642844 U CN 220642844U
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- tank
- aeration
- treatment system
- filter
- wastewater
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 69
- 238000005273 aeration Methods 0.000 claims abstract description 68
- 238000001179 sorption measurement Methods 0.000 claims abstract description 31
- 238000011045 prefiltration Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- 239000007788 liquid Substances 0.000 claims description 29
- 238000001914 filtration Methods 0.000 claims description 27
- 238000005276 aerator Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 18
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The utility model provides a methylene dichloride wastewater treatment system, which comprises an aeration device, wherein an inlet end and an outlet end of the aeration device are respectively connected with a prefilter unit and a fine filter unit, the prefilter unit comprises a cartridge filter and an adsorption filter which are connected in series, and the fine filter unit comprises a fine bag filter and a fine adsorber which are connected in series. The treatment system can reduce the content of dichloromethane in the wastewater, improve the problem that the wastewater is directly discharged to pollute the environment, and remove most of impurities after the wastewater entering the aeration device is pre-filtered, so that the service life of the aeration device is greatly prolonged.
Description
Technical Field
The utility model relates to the technical field of environmental protection, in particular to a methylene dichloride wastewater treatment system.
Background
The wet process for preparing lithium ion cell diaphragm adopts high boiling point and low volatility solvent as pore forming agent, and then uses low boiling point and volatile solvent to elute it in the extraction procedure, then makes it pass through drying, volatilizes the extractant on the diaphragm surface and in the micropores, and makes it enter into waste gas treatment system until the waste gas concentration reaches the national discharge standard. At present, the commonly used extractant comprises volatile organic solvents such as hexane, heptane, acetone, methylene dichloride and the like, wherein the methylene dichloride is most widely applied due to the characteristics of non-inflammability, non-explosiveness and small harm to human bodies.
The methylene dichloride is volatilized into gas after being dried, the gas is recovered through an adsorption-resolution-condensation process, and a large amount of wastewater containing methylene dichloride and other impurities is generated in the resolution and condensation process, and the wastewater is discharged after aeration treatment. However, after impurities in the wastewater enter the aeration tank, micropores of the aeration device can be blocked, and the service life of the aeration device is shortened.
The production area is provided with a dichloromethane emergency accommodating tank, and dichloromethane wastewater in the accommodating tank contains a large amount of impurities, so that the treatment difficulty is extremely high; if the water enters the aeration device directly, the dichloromethane content is reduced in an aeration mode, and the service life of the aeration device can be seriously influenced.
Disclosure of Invention
The utility model aims at providing a methylene dichloride wastewater treatment system, it can handle the waste water that most contain methylene dichloride, reduces the content of methylene dichloride in the waste water, improves the direct environmental pollution's of discharging problem of waste water to get into aeration equipment's waste water after prefiltering, removed most impurity, make aeration equipment's life increase greatly.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a dichloromethane effluent disposal system, includes aeration equipment, aeration equipment's entry end and exit end are connected with prefilter unit and smart filter unit respectively, prefilter unit includes cartridge filter and the adsorption filter of establishing ties, smart filter unit includes accurate bag filter and the accurate adsorber of establishing ties.
Further, the inlet end of the prefilter unit is connected with a buffer tank through a wastewater conveying pump, a float liquid level meter is arranged in the buffer tank, and a sensor on the float liquid level meter is connected with the wastewater conveying pump through a controller and used for controlling the start and stop of the wastewater conveying pump.
Further, the filtering precision of the cartridge filter is 1-5 micrometers, and the filtering precision of the precise bag filter is 0.1-0.5 micrometers.
Further, the adsorption filter comprises a tank body and a tray arranged in the middle of the interior of the tank body, an adsorption medium is filled in an adsorption cavity positioned above the tray, and a water outlet is formed in the bottom of a liquid cavity positioned below the tray; the tray is two layers of grid plates fixed on the inner wall of the tank body, a filter screen is clamped between the two layers of grid plates, and the aperture of the filter screen is smaller than the particle size of the adsorption medium.
Further, the aeration device comprises an aeration tank, the inner space of the aeration tank is divided into at least two aeration areas by a partition plate, a plurality of tubular aerators are uniformly distributed at the bottom of each aeration area, and the air inlet ends of all the tubular aerators are connected with a fan through pipelines.
Preferably, the air inlet of the fan is connected with the steam tank.
Preferably, the top of the aeration tank is provided with a liquid inlet and an overflow port respectively, and the liquid inlet and the overflow port are respectively positioned at the top of the aeration tank and in different aeration areas.
Further, a water collecting tank and an intermediate delivery pump are sequentially connected between the aeration device and the fine filtering unit, and the intermediate delivery pump pumps liquid in the water collecting tank into the fine filtering unit; the water collecting tank is internally provided with a float liquid level meter, and a sensor on the float liquid level meter is connected with the intermediate conveying pump through a controller and is used for controlling the start and stop of the intermediate conveying pump.
Further, the outlet end of the fine filtering unit is connected with a clear water tank, and a float liquid level meter is arranged in the clear water tank; the outlet end of the clear water tank is connected with a clear water delivery pump; the sensor on the float liquid level meter is connected with the clean water delivery pump through the controller and is used for controlling the start and stop of the clean water delivery pump (73). The methylene dichloride wastewater is firstly collected into the buffer pool, when a certain amount of wastewater is reached, the wastewater conveying pump is started, the wastewater is conveyed into the prefilter unit, particulate matters are filtered through the security filter, and then the particulate matters are adsorbed through the adsorption filter, so that particulate or suspended impurities in the wastewater are greatly reduced. When the treated wastewater in the aeration tank reaches a certain amount, the wastewater overflows from an overflow port at the top of the aeration tank to a water collecting tank for storage. When a certain amount is reached, the intermediate delivery pump is started, the intermediate delivery pump is pumped into the fine filtration unit to carry out secondary filtration and adsorption on finer particles or suspended matters, the treated wastewater enters a clear water tank to be stored, and a water sample can be taken to detect and analyze whether the water sample reaches the standard. When reaching the standard and reaching a certain water quantity, the clear water delivery pump is started for discharging.
The utility model provides a prefilter unit is connected at aeration equipment's entry end, earlier will waste water pump into prefilter unit, just gets into aeration equipment after filtering granule impurity in the waste water, makes the tubular aerator in the aeration tank can not be because of impurity is more, blocks up easily, and then prolongs its life greatly.
The float liquid level meter is arranged in the buffer tank, the water collecting tank and the clear water tank respectively, and a sensor on the float liquid level meter is connected with respective conveying pumps through a controller and used for controlling the start and stop of the conveying pumps. Thereby reducing the production cost and ensuring the working efficiency and the service life of the pre-filtering unit and the fine filtering unit.
So the treatment system of this application not only can reduce the content of dichloromethane in the waste water, improves the direct environmental pollution's of discharging problem of waste water to get into aeration equipment's waste water after prefiltering, removed most impurity, make aeration equipment's life extension greatly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of the present application;
fig. 2 is a schematic structural view of the adsorption filter in the present application.
In the figure: 1-a buffer pool, 11-a float level meter and 12-a float;
2-prefilter unit, 21-cartridge filter, 22-adsorption filter, 221-water inlet, 222-tray, 223-water outlet;
3-aeration device, 31-aeration tank, 32-partition board, 33-tubular aerator, 34-pipeline and 35-fan;
4-a water collecting tank;
5-fine filtration unit, 51-fine bag filter, 52-fine adsorber;
6-a clean water tank;
71-waste water conveying pump, 72-intermediate conveying pump and 73-clear water conveying pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
As shown in fig. 1, a dichloromethane wastewater treatment system comprises an aeration device 3, wherein an inlet end and an outlet end of the aeration device 3 are respectively connected with a prefilter unit 2 and a fine filter unit 5, the prefilter unit 2 comprises a cartridge filter 21 and an adsorption filter 22 which are connected in series, and the fine filter unit 5 comprises a precise bag filter 51 and a precise adsorber 52 which are connected in series.
Specifically, the cartridge filter 21 and the precision bag filter 51 have the same structure, but are different in filtration accuracy, wherein the cartridge filter has a filtration accuracy of 1-5 microns, and can intercept impurities with larger particles in the wastewater, and the wastewater passing through the cartridge filter enters the adsorption filter. The filtering precision of the precise bag filter is 0.1-0.5 micrometers, so that impurities with smaller particles in water are further filtered out, and the cleanliness of the filtered water is improved.
The structure of the adsorption filter 22 is shown in fig. 2, and comprises a tank body and a tray 222 arranged in the middle of the tank body, wherein an adsorption cavity above the tray 222 is filled with adsorption media, and a water outlet 223 is formed in the bottom of a liquid cavity below the tray 222; the tray 222 is two layers of grid plates fixed on the inner wall of the tank body, a filter screen is clamped between the two layers of grid plates, and the aperture of the filter screen is smaller than the particle size of the adsorption medium.
The structure of the precision adsorber in the present application is the same as that of the adsorption filter, and is a tank-like structure, and the difference is only that the particle diameters of the adsorption medium and the adsorption particulate matter are different. The adsorption medium in the adsorption filter consists of quartz sand, anthracite and other substances for intercepting suspended matters, so that small particle impurities and suspended matters in the wastewater can be intercepted and filtered, and the water quality of the effluent is ensured to be clear. The adsorption medium in the precise adsorber consists of 50% of anthracite and 50% of active carbon, and further adsorbs impurities in water.
The inlet end of the aeration device is connected with a prefilter unit, waste water is pumped into the prefilter unit, namely, impurities with larger particles are filtered by a cartridge filter 21, and then small particle impurities and suspended matters in the waste water are intercepted and filtered by an adsorption filter 22; finally, the wastewater enters an aeration tank of the aeration device, the content of dichloromethane in the wastewater can be greatly reduced after aeration, and dichloromethane gas overflowing from the water surface can be condensed and recycled through an air pipe at the top of the aeration tank. Wherein, in order to better discharge the dichloromethane in the wastewater, the steam is introduced into the tubular aerator, the wastewater can be heated to 50 ℃ which is higher than the boiling point of the dichloromethane, and the dichloromethane in the wastewater is better removed by aeration.
Therefore, because the methylene dichloride wastewater is pre-filtered, the particulate impurities in the wastewater entering the aeration tank are almost completely filtered, so that the tubular aerator in the aeration tank cannot be easily blocked due to more impurities, and the service life of the tubular aerator is prolonged greatly.
In this embodiment, the aeration device 3 includes an aeration tank 31, the internal space of the aeration tank 31 is divided into at least two aeration areas by a partition plate 32, a plurality of tubular aerators 33 are uniformly distributed at the bottom of each aeration area, and the air inlet ends of all the tubular aerators 33 are connected with a fan 35 through a pipeline 34. The fan introduces the gas into the pipe-type aerator 33 and shunts the gas so as to achieve the purpose of aeration and greatly reduce the content of dichloromethane in the wastewater. Optimally, the air inlet of the fan 35 is connected with a steam tank, and the wastewater is heated to a temperature higher than the boiling point of dichloromethane by high-temperature steam, so that the dichloromethane in the wastewater is better removed by aeration. The top of the aeration tank 31 is provided with a liquid inlet and an overflow port, and the liquid inlet and the overflow port are respectively positioned at the top of the aeration tank 31 and in different aeration areas. Through overflow, the wastewater after aeration enters a water collecting tank, the tank body of the water collecting tank is sealed, and a cover plate window is arranged on the tank body, so that the liquid condition in the tank can be observed.
In this embodiment, the inlet end of the prefilter unit 2 is connected with the buffer tank 1 through a wastewater delivery pump 71, a float level meter 11 is disposed in the buffer tank 1, and a sensor on the float level meter 11 is connected with the wastewater delivery pump 71 through a controller, so as to control the start and stop of the wastewater delivery pump 71.
The float level gauge and the controller in the application are existing commercially available products, can be directly purchased and applied to the application, and only relate to circuit connection of the float level gauge and the controller, and do not relate to improvement of the structure, the control method and the like of the float level gauge and the controller. Specifically, the water inlet of buffer tank 1 is used for receiving dichloromethane waste water, and the water inlet can set up a plurality of, can collect the dichloromethane waste water in different places. The cell body of buffer tank adopts SUS316L material, and the cell body is sealed, and the top sets up the apron window, can observe the interior liquid condition of pond.
When the level of the wastewater in the buffer tank 1 reaches the position of the upper float 12 of the float level meter 11, a sensor on the upper float sends an electric signal to a controller, and the controller controls the wastewater delivery pump 71 to be started so as to pump the wastewater into the prefilter unit 2 for filtering. When the level of the wastewater in the buffer tank 1 reaches the lower float position of the float level meter 11, the controller controls the wastewater transfer pump 71 to stop operating.
Namely, the present embodiment controls the start and stop of the wastewater transfer pump through the float level gauge, thereby reducing the production cost and ensuring the working efficiency and the service life of the safety filter 21 and the adsorption filter 22 in the prefilter unit 2.
A water collecting tank 4 and an intermediate delivery pump 72 are sequentially connected between the aeration device 3 and the fine filtering unit 5, and the intermediate delivery pump 72 pumps the liquid in the water collecting tank 4 into the fine filtering unit 5; a float liquid level meter is arranged in the water collecting tank 4, and a sensor on the float liquid level meter is connected with the intermediate delivery pump 72 through a controller and is used for controlling the start and stop of the intermediate delivery pump 72.
The outlet end of the fine filtering unit 5 is connected with a clear water tank 6, and a float liquid level meter is arranged in the clear water tank 6; the outlet end of the clean water tank 6 is connected with a clean water delivery pump 73; the sensor on the float level meter is connected with the clean water delivery pump 73 through a controller and is used for controlling the start and stop of the clean water delivery pump 73. The clean water tank 6 receives the wastewater after the treatment of each procedure, and can sample and detect the wastewater after the clean water tank meets the discharge index, and then the clean water delivery pump 73 is started to discharge the wastewater.
The methylene dichloride wastewater is firstly collected into the buffer pool, when a certain amount of wastewater is reached, the wastewater conveying pump is started, the wastewater is conveyed into the prefilter unit, particulate matters are filtered through the security filter, and then the particulate matters are adsorbed through the adsorption filter, so that particulate or suspended impurities in the wastewater are greatly reduced. When the treated wastewater in the aeration tank reaches a certain amount, the wastewater overflows from an overflow port at the top of the aeration tank to a water collecting tank for storage. When a certain amount is reached, the intermediate delivery pump is started, the intermediate delivery pump is pumped into the fine filtration unit to carry out secondary filtration and adsorption on finer particles or suspended matters, the treated wastewater enters a clear water tank to be stored, and a water sample can be taken to detect and analyze whether the water sample reaches the standard. When reaching the standard and reaching a certain water quantity, the clear water delivery pump is started for discharging.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those having ordinary skill in the art that various modifications can be readily made to the embodiments and the generic principles described herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present utility model is not limited to the embodiments described herein, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (9)
1. A methylene chloride wastewater treatment system, comprising an aeration device (3), characterized in that: the inlet end and the outlet end of the aeration device (3) are respectively connected with a pre-filtering unit (2) and a fine filtering unit (5), the pre-filtering unit (2) comprises a cartridge filter (21) and an adsorption filter (22) which are connected in series, and the fine filtering unit (5) comprises a fine bag filter (51) and a fine adsorber (52) which are connected in series.
2. A methylene chloride wastewater treatment system according to claim 1 wherein: the inlet end of the prefilter unit (2) is connected with the buffer tank (1) through the wastewater conveying pump (71), a float liquid level meter (11) is arranged in the buffer tank (1), and a sensor on the float liquid level meter (11) is connected with the wastewater conveying pump (71) through a controller and used for controlling the starting and stopping of the wastewater conveying pump (71).
3. A methylene chloride wastewater treatment system according to claim 1 wherein: the filter precision of the cartridge filter (21) is 1-5 micrometers, and the filter precision of the precision bag filter (51) is 0.1-0.5 micrometers.
4. A methylene chloride wastewater treatment system according to claim 1 wherein: the adsorption filter (22) comprises a tank body and a tray (222) arranged in the middle of the interior of the tank body, an adsorption medium is filled in an adsorption cavity above the tray (222), and a water outlet (223) is formed in the bottom of a liquid cavity below the tray (222); the tray (222) is a two-layer grid plate fixed on the inner wall of the tank body, a filter screen is clamped between the two-layer grid plate, and the aperture of the filter screen is smaller than the particle size of the adsorption medium.
5. A methylene chloride wastewater treatment system according to claim 1 wherein: the aeration device (3) comprises an aeration tank (31), the inner space of the aeration tank (31) is divided into at least two aeration areas by a partition plate (32), a plurality of tubular aerators (33) are uniformly distributed at the bottom of each aeration area, and the air inlet ends of all the tubular aerators (33) are connected with a fan (35) through pipelines (34).
6. A methylene chloride wastewater treatment system according to claim 5 wherein: an air inlet of the fan (35) is connected with the steam tank.
7. A methylene chloride wastewater treatment system according to claim 5 wherein: the top of aeration tank (31) has seted up inlet and overflow mouth respectively, inlet and overflow mouth are located the top of aeration tank (31) and are located different aeration zone respectively.
8. A methylene chloride wastewater treatment system according to claim 1 wherein: a water collecting tank (4) and an intermediate delivery pump (72) are sequentially connected between the aeration device (3) and the fine filtering unit (5), and the intermediate delivery pump (72) pumps liquid in the water collecting tank (4) into the fine filtering unit (5); a float liquid level meter is arranged in the water collecting tank (4), and a sensor on the float liquid level meter is connected with the intermediate conveying pump (72) through a controller and is used for controlling the start and stop of the intermediate conveying pump (72).
9. A methylene chloride wastewater treatment system according to claim 1 wherein: the outlet end of the fine filtering unit (5) is connected with a clear water tank (6), and a float liquid level meter is arranged in the clear water tank (6); the outlet end of the clean water tank (6) is connected with a clean water delivery pump (73); the sensor on the float liquid level meter is connected with the clean water conveying pump (73) through the controller and is used for controlling the start and stop of the clean water conveying pump (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322241264.3U CN220642844U (en) | 2023-08-18 | 2023-08-18 | Dichloromethane waste water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322241264.3U CN220642844U (en) | 2023-08-18 | 2023-08-18 | Dichloromethane waste water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220642844U true CN220642844U (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322241264.3U Active CN220642844U (en) | 2023-08-18 | 2023-08-18 | Dichloromethane waste water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220642844U (en) |
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2023
- 2023-08-18 CN CN202322241264.3U patent/CN220642844U/en active Active
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