CN112939255A - Device for treating pollution of volatile organic compounds in underground water - Google Patents
Device for treating pollution of volatile organic compounds in underground water Download PDFInfo
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- CN112939255A CN112939255A CN202110138619.9A CN202110138619A CN112939255A CN 112939255 A CN112939255 A CN 112939255A CN 202110138619 A CN202110138619 A CN 202110138619A CN 112939255 A CN112939255 A CN 112939255A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/322—Volatile compounds, e.g. benzene
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a device for treating groundwater volatile organic compound pollution, which comprises a plurality of purification towers which are uniformly arranged, wherein a water spray pipe is fixedly arranged on the inner side wall of the middle end of each purification tower, a plurality of atomizing spray heads are arranged at the bottom end of each water spray pipe, a packing layer is fixedly arranged on the inner side wall of the bottom end of each purification tower, the packing layer is positioned at the lower sides of the water spray pipes and the atomizing spray heads, and an aeration seat is fixedly arranged on the bottom wall of the inner side of each purification tower. According to the invention, the contact area between the sewage and the air is increased by uniformly spraying the atomizing nozzles, meanwhile, the sewage slowly flows downwards through the packing layer to meet the ascending air flow, most of volatile organic pollutants in the sewage can be separated from the water, the aeration pipe aerates the sewage to ensure that the gas and the liquid are fully contacted with each other, so that the volatile organic pollutants in the sewage can be fully separated, the purification speed is high, the purification effect is good, the design is reasonable, and the practical effect is good.
Description
Technical Field
The invention relates to the technical field of water pollution treatment equipment, in particular to a device for treating pollution of volatile organic compounds in underground water.
Background
The sewage treatment process is an economic, reasonable, scientific and effective process method for various urban domestic sewage and industrial wastewater, the sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, the phenomenon that the water quality is reduced due to the fact that underground water permeates organic matters is caused, organic pollutants in a domestic pollution source, an industrial pollution source and an agricultural pollution source are drenched into an aquifer to increase the content of the organic pollutants in the underground water and cause pathogens to appear, the pollution of pesticides and chemical fertilizers to the underground water is light and is only limited to a shallow layer, the pollution ways can be roughly divided into an intermittent infiltration type, a continuous infiltration type, a runoff type and a runoff type, the underground water is difficult to eliminate once suffering from the organic pollution, the prevention is mainly needed, the measures are taken in time after the underground water is actively monitored to find the organic pollution, the methods for treating and repairing underground water organic pollution mainly comprise a physical method, a chemical method and a biological method.
The existing underground water lacks an efficient treatment method for volatile pollutants in the treatment process, so that the pollution of air is easily caused in the process of treating the underground water, meanwhile, the existing stripping tower and other working efficiency are low, the purification effect is poor, the maintenance is complex, the fixing stability is low, the energy consumption is high, and the competitiveness is reduced, therefore, a device for treating the pollution of the volatile organic compounds of the underground water needs to be designed urgently to solve the problem of the background technology.
Disclosure of Invention
The invention aims to solve the problem that the device for treating the pollution of the volatile organic compounds of the underground water in the prior art is poor in practical effect, and provides the device for treating the pollution of the volatile organic compounds of the underground water.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for treating pollution of underground water volatile organic compounds comprises a plurality of purification towers which are uniformly arranged, wherein a water spray pipe is fixedly arranged on the inner side wall of the middle end of each purification tower, a plurality of atomizing spray nozzles are arranged at the bottom end of each water spray pipe, a packing layer is fixedly arranged on the inner side wall of the bottom end of each purification tower, the packing layer is positioned at the lower sides of the water spray pipes and the atomizing spray nozzles, an aeration seat is fixedly arranged on the bottom wall of the inner side of each purification tower, a plurality of aeration pipes are fixedly arranged at the top end of each aeration seat, a fan is arranged at one side of each purification tower, each fan is connected with a blast pipe, one end of each blast pipe is connected to the adjacent aeration seat, a water suction pump is fixedly arranged on the outer side wall of the bottom end of each purification tower, and a water suction pipe is inserted in the outer side wall of the bottom end of each purification tower, the drinking-water pipe all communicates with the purifying column, and the one end of drinking-water pipe all connects on the suction pump, every all install the connecting pipe on the suction pump, the one end that the suction pump was kept away from to the connecting pipe all connects on the spray pipe in adjacent purifying column, and adjacent purifying column all communicates each other, every install defroster, dry layer and silica gel adsorbed layer, every in proper order on the inside wall on purifying column top the top of purifying column all is equipped with the top of the tower, every all install active carbon adsorption layer in the top of the tower, every the equal fixed mounting in top of the tower has the blast pipe, is located one end be connected with sewage prefiltration device on the purifying column, the other end be connected with sewage filter equipment on the purifying column.
Preferably, all be equipped with the access hole on purifying column and the tower top, every access hole department all installs the sealing door who mutually supports with the access hole.
Preferably, sewage prefilter is including the installation jar, be connected with the sewer pipe on the lateral wall of installation tank bottom, install fixed water pipe on the lateral wall on installation tank top, and the spray pipe intercommunication in fixed water pipe and the adjacent purifying column, fixed mounting has the installing frame on the inside wall of installation jar, fixed mounting has the precision filter screen on the inside wall of installing frame, and sewer pipe and fixed water pipe are located the downside and the upside of precision filter screen respectively, be equipped with the cleaning device who mutually supports with the precision filter screen in the installing jar.
Preferably, cleaning device includes the cylinder of fixed mounting on the installation tank roof, the output fixed mounting of cylinder has the piston rod, and the bottom of piston rod runs through the diapire of installation tank and extends to in the installation tank, the bottom fixed mounting of piston rod has the installation piece, even fixed mounting has a plurality of steel needles on the diapire of installation piece, evenly be equipped with a plurality of filter screen holes on the precision filter screen, and steel needle and filter screen hole one-to-one, fixed mounting has the installation pole on the diapire of installation piece, and the bottom of installation pole runs through the precision filter screen and extends to the downside of precision filter screen, the bottom of installation tank is equipped with the discharge opening, the bottom fixed mounting of installation pole has the sealed piece of toper mutually supporting with the discharge opening.
Preferably, a conical baffle is fixedly mounted on the inner side wall of the bottom end of the mounting tank, and a through hole is formed in the center of the conical baffle.
Preferably, sewage filter equipment is including filtering the jar, and filters jar connection on adjacent suction pump, install the active carbon filter layer on the inside wall of filtering jar middle-end, install the drain pipe on the lateral wall of filtering the tank bottom end.
Preferably, the top end threaded connection who crosses the filter tank has sealed top plug, fixed mounting has the dead lever on the diapire of sealed top plug, and the bottom at the dead lever is fixed to the active carbon filter layer.
Preferably, the inner side wall of the bottom end of the filter tank is fixedly provided with an annular positioning plate matched with the activated carbon filter layer.
Compared with the prior art, the invention has the following beneficial effects:
1. the contact area between the sewage and the air is increased by uniformly spraying the atomizing nozzles, meanwhile, the sewage slowly flows downwards through the packing layer to meet the ascending air flow, most of volatile organic pollutants in the sewage can be separated from the water, the aeration pipe aerates to ensure that the gas and the liquid are fully contacted with each other, so that the volatile organic pollutants in the sewage can be fully separated, the purification speed is high, the purification effect is good, the design is reasonable, and the practical effect is good;
2. the purification towers which are mutually connected are adopted to purify the volatile organic pollutants in the sewage, so that the volatile organic pollutants in the sewage can be thoroughly separated out, and the sewage purification effect is further improved;
3. be connected with sewage prefilter on the purifying tower that is located one end, solid-state impurity to in the sewage that can be convenient filters to can avoid solid-state impurity to block up the packing layer in water pipe and the purifying tower, excellent in use effect.
Drawings
FIG. 1 is a front sectional view of an apparatus for treating groundwater VOC contamination according to the present invention;
FIG. 2 is a schematic front view of an apparatus for treating groundwater VOC contamination according to the present invention;
FIG. 3 is a schematic side view of a purification tower of an apparatus for treating groundwater VOC contamination according to the present invention;
FIG. 4 is an enlarged view of the structure of part A of an apparatus for treating groundwater VOC pollution according to the present invention.
In the figure: 1 purifying tower, 2 water spray pipes, 3 atomizing nozzles, 4 packing layers, 5 aeration seats, 6 aeration pipes, 7 fans, 8 blast pipes, 9 water suction pumps, 10 water suction pipes, 11 connecting pipes, 12 demisters, 13 drying layers, 14 silica gel adsorption layers, 15 tower tops, 16 activated carbon adsorption layers, 17 exhaust pipes, 18 inspection holes, 19 sealing doors, 20 installation tanks, 21 sewage pipes, 22 installation frames, 23 cylinders, 24 piston rods, 25 installation blocks, 26 steel needles, 27 installation rods, 28 conical sealing blocks, 29 conical baffles, 30 filter tanks, 31 activated carbon filter layers, 32 drain pipes, 33 sealing top plugs, 34 fixing rods and 35 annular positioning plates.
Detailed Description
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 a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a device for treating groundwater volatile organic compound pollution, comprising a plurality of purification towers 1 uniformly arranged, a water spray pipe 2 is fixedly arranged on the inner side wall of the middle end of each purification tower 1, a plurality of atomizing spray heads 3 are arranged at the bottom end of each water spray pipe 2, a packing layer 4 is fixedly arranged on the inner side wall of the bottom end of each purification tower 1, the packing layer 4 is positioned at the lower side of the water spray pipe 2 and the atomizing spray heads 3, an aeration seat 5 is fixedly arranged on the bottom wall of the inner side of each purification tower 1, a plurality of aeration pipes 6 are fixedly arranged at the top end of each aeration seat 5, a fan 7 is arranged at one side of each purification tower 1, each fan 7 is connected with a blast pipe 8, one end of each blast pipe 8 is connected to the adjacent aeration seat 5, a water suction pump 9 is fixedly arranged on the outer side wall of the bottom end of each purification tower 1, a water suction pipe 10 is inserted on the outer side wall of the, the water pumping pipes 10 are communicated with the purifying towers 1, one ends of the water pumping pipes 10 are connected to the water pumping pumps 9, each water pumping pump 9 is provided with a connecting pipe 11, one ends of the connecting pipes 11 far away from the water pumping pumps 9 are connected to the water spraying pipes 2 in the adjacent purifying towers 1, the adjacent purifying towers 1 are communicated with each other, the inner side wall of the top end of each purifying tower 1 is sequentially provided with a demister 12, a drying layer 13 and a silica gel adsorption layer 14, the top end of each purifying tower 1 is provided with a tower top 15, an activated carbon adsorption layer 16 is arranged in each tower top 15, the top end of each tower top 15 is fixedly provided with an exhaust pipe 17, the contact area between sewage and air can be increased by uniformly spraying through the atomizing nozzles 3, meanwhile, the sewage slowly flows downwards through the packing layer 4 to meet with updraft, most of volatile organic pollutants in the sewage can be separated from the water, and the aeration pipes, the gas and the liquid are fully contacted with each other, so that the volatile organic pollutants in the sewage can be fully separated.
All be equipped with access hole 18 on purifying column 1 and the top of the tower 15, every access hole 18 department all installs the sealing door 19 of mutually supporting with access hole 18, can be convenient carry out maintenance and change to packing layer 4, defroster 12, dry layer 13, silica gel adsorbed layer 14 and active carbon adsorbed layer 16 in purifying column 1.
Be connected with sewage prefilter on the purifying tower 1 that is located one end, sewage prefilter is including installation jar 20, be connected with sewage pipe 21 on the lateral wall of installation jar 20 bottom, install fixed water pipe on the lateral wall on installation jar 20 top, and fixed water pipe and the 2 intercommunications of spray pipe in the adjacent purifying tower 1, fixed mounting has installing frame 22 on the inside wall of installation jar 20, fixed mounting has precision filter net on the inside wall of installing frame 22, and sewage pipe 21 and fixed water pipe are located precision filter net's downside and upside respectively, sewage gets into in installation jar 20 through sewage pipe 21, sewage after precision filter net filters can flow to the spray pipe 2 in the adjacent purifying tower 1 in, can be convenient filter the solid-state impurity in the sewage, thereby can be in order to avoid solid-state impurity to block up packing layer 4 in water pipe and the purifying tower 1, excellent in use effect.
A cleaning device matched with the precise filter screen is arranged in the installation tank 20, the cleaning device comprises an air cylinder 23 fixedly installed on the top wall of the installation tank 20, a piston rod 24 is fixedly installed at the output end of the air cylinder 23, the bottom end of the piston rod 24 penetrates through the bottom wall of the installation tank 20 and extends into the installation tank 20, an installation block 25 is fixedly installed at the bottom end of the piston rod 24, a plurality of steel needles 26 are uniformly and fixedly installed on the bottom wall of the installation block 25, a plurality of filter screen holes are uniformly formed in the precise filter screen, the steel needles 26 correspond to the filter screen holes one by one, an installation rod 27 is fixedly installed on the bottom wall of the installation block 25, the bottom end of the installation rod 27 penetrates through the precise filter screen and extends to the lower side of the precise filter screen, a discharge opening is formed in the bottom end of the installation tank 20, a conical sealing block 28 matched with the discharge opening is fixedly installed at the bottom end of the installation rod 27, the starting air, therefore, impurities blocked in the precise filter screen can be conveniently pushed out, the mounting rod 27 and the conical sealing block 28 can move downwards along with the downward movement of the mounting block 25, and the cleaned impurities can be discharged through the discharge opening at the bottom end of the mounting tank 20 conveniently.
The inner side wall of the bottom end of the installation tank 20 is fixedly provided with a conical baffle 29, and a through hole is formed in the center of the conical baffle 29, so that impurities at the bottom end of the installation tank 20 can be prevented from floating upwards in a large area.
Be connected with sewage filter equipment on the purifying tower 1 of the other end, sewage filter equipment is including filtering jar 30, and filters jar 30 and connect on adjacent suction pump 9, installs active carbon filter layer 31 on the inside wall of filtering jar 30 middle-end, installs drain pipe 32 on the outside wall of filtering jar 30 bottom, can be convenient filter in the sewage.
The top end threaded connection of filtering jar 30 has sealed top plug 33, and fixed mounting has dead lever 34 on the diapire of sealed top plug 33, and activated carbon filter layer 31 fixes in the bottom of dead lever 34, and what can be convenient is just activated carbon filter layer 31 installs the dismantlement to can be convenient to just activated carbon filter layer 31 changes.
An annular positioning plate 35 matched with the active carbon filtering layer 31 is fixedly arranged on the inner side wall of the bottom end of the filtering tank 30, and the sealing performance of the active carbon filtering layer 31 connected with the filtering tank 30 is improved.
In the invention, sewage enters the installation tank 20 through the sewage pipe 21, the sewage filtered by the fine filter screen flows into the water spray pipes 2 in the adjacent purification towers 1, the sewage in the water spray pipes 2 is uniformly sprayed by the atomizing nozzles 3 to increase the contact area of the sewage and air, meanwhile, the sewage slowly flows downwards through the packing layer 4 to meet with the ascending air flow, most of volatile organic pollutants in the sewage can be separated from the water, the aeration pipe 6 aerates to ensure that gas and liquid are fully contacted with each other, so that the volatile organic pollutants in the sewage can be fully separated, the sewage purified by the purification towers 1 is pumped into the filter tank 30 through the water suction pump 9, and the sewage can be recycled after being filtered by the activated carbon filter layer 31.
Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a device for handling groundwater volatile organic compounds pollutes, includes evenly sets up a plurality of purifying towers (1), its characterized in that: the inner side wall of the middle end of each purification tower (1) is fixedly provided with a water spraying pipe (2), the bottom of each water spraying pipe (2) is provided with a plurality of atomizing spray heads (3), the inner side wall of the bottom of each purification tower (1) is fixedly provided with a packing layer (4), the packing layer (4) is positioned at the lower sides of the water spraying pipes (2) and the atomizing spray heads (3), the bottom wall of the inner side of each purification tower (1) is fixedly provided with an aeration seat (5), the top end of each aeration seat (5) is fixedly provided with a plurality of aeration pipes (6), one side of each purification tower (1) is provided with a fan (7), each fan (7) is connected with a blast pipe (8), one end of each blast pipe (8) is connected to the adjacent aeration seat (5), and the outer side wall of the bottom of each purification tower (1) is fixedly provided with a water suction pump (9), every suction pipe (10) is inserted on the lateral wall of purification tower (1) bottom, suction pipe (10) all communicates with purification tower (1), and the one end of suction pipe (10) all connects on suction pump (9), every all install connecting pipe (11) on suction pump (9), the one end that suction pump (9) were kept away from in connecting pipe (11) all connects on spray pipe (2) in adjacent purification tower (1), and adjacent purification tower (1) all communicates each other, every install defroster (12), dry layer (13) and silica gel adsorbed layer (14) on the inside wall on purification tower (1) top in proper order, every the top of purification tower (1) all is equipped with top of the tower (15), every all install active carbon adsorbed layer (16) in top of the tower (15), every the equal fixed mounting in top of the tower (15) has blast pipe (17), the purification tower (1) at one end is connected with a sewage pre-filtering device, and the purification tower (1) at the other end is connected with a sewage filtering device.
2. An apparatus for treating groundwater volatile organic pollution according to claim 1, wherein: all be equipped with access hole (18) on purifying column (1) and top of the tower (15), every access hole (18) department all installs sealing door (19) of mutually supporting with access hole (18).
3. An apparatus for treating groundwater volatile organic pollution according to claim 1, wherein: sewage is filter equipment in advance is including installation jar (20), be connected with sewage pipe (21) on the lateral wall of installation jar (20) bottom, install fixed water pipe on the lateral wall on installation jar (20) top, and fixed water pipe and spray pipe (2) intercommunication in adjacent purifying tower (1), fixed mounting has installing frame (22) on the inside wall of installation jar (20), fixed mounting has the precision filter screen on the inside wall of installing frame (22), and sewage pipe (21) and fixed water pipe are located the downside and the upside of precision filter screen respectively, be equipped with the cleaning device who mutually supports with the precision filter screen in installation jar (20).
4. An apparatus for treating groundwater volatile organic pollution according to claim 4, wherein: the cleaning device comprises an air cylinder (23) fixedly arranged on the top wall of the installation tank (20), a piston rod (24) is fixedly arranged at the output end of the air cylinder (23), and the bottom end of the piston rod (24) penetrates through the bottom wall of the mounting tank (20) and extends into the mounting tank (20), the bottom end of the piston rod (24) is fixedly provided with an installation block (25), the bottom wall of the installation block (25) is uniformly and fixedly provided with a plurality of steel needles (26), the precise filter screen is uniformly provided with a plurality of filter screen holes, the steel needles (26) correspond to the filter meshes one by one, the bottom wall of the mounting block (25) is fixedly provided with a mounting rod (27), and the bottom end of the mounting rod (27) penetrates through the precision filter screen and extends to the lower side of the precision filter screen, the bottom of installation jar (20) is equipped with the discharge opening, the bottom fixed mounting of installation pole (27) has the sealed piece of toper (28) of mutually supporting with the discharge opening.
5. An apparatus for treating groundwater volatile organic pollution according to claim 4, wherein: the mounting tank is characterized in that a conical baffle (29) is fixedly mounted on the inner side wall of the bottom end of the mounting tank (20), and a through hole is formed in the center of the conical baffle (29).
6. An apparatus for treating groundwater volatile organic pollution according to claim 1, wherein: the sewage filtering device comprises a filtering tank (30), the filtering tank (30) is connected to an adjacent water suction pump (9), an activated carbon filtering layer (31) is installed on the inner side wall of the middle end of the filtering tank (30), and a drainage pipe (32) is installed on the outer side wall of the bottom end of the filtering tank (30).
7. An apparatus for treating groundwater volatile organic pollution according to claim 6, wherein: the top end threaded connection of filtering jar (30) has sealed top plug (33), fixed mounting has dead lever (34) on the diapire of sealed top plug (33), and the bottom at dead lever (34) is fixed in active carbon filter layer (31).
8. An apparatus for treating groundwater volatile organic pollution according to claim 7, wherein: and an annular positioning plate (35) matched with the activated carbon filter layer (31) is fixedly arranged on the inner side wall at the bottom end of the filter tank (30).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110138619.9A CN112939255A (en) | 2021-02-01 | 2021-02-01 | Device for treating pollution of volatile organic compounds in underground water |
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| CN202110138619.9A CN112939255A (en) | 2021-02-01 | 2021-02-01 | Device for treating pollution of volatile organic compounds in underground water |
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| CN115594318A (en) * | 2022-12-13 | 2023-01-13 | 毅康科技有限公司（Cn） | Underground water aeration tower device for sewage treatment |
| CN116354116A (en) * | 2023-03-07 | 2023-06-30 | 江苏中吴环境工程设计研究集团有限公司 | Conveying system is handled to dry process acetylene sludge storehouse carbide slag |
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