CN216175292U - Integrated continuous operation soil and underground water pollution treatment device - Google Patents
Integrated continuous operation soil and underground water pollution treatment device Download PDFInfo
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- CN216175292U CN216175292U CN202122657289.2U CN202122657289U CN216175292U CN 216175292 U CN216175292 U CN 216175292U CN 202122657289 U CN202122657289 U CN 202122657289U CN 216175292 U CN216175292 U CN 216175292U
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Abstract
An integrated continuous operation soil and groundwater pollution treatment device comprises a vacuum extraction system and a waste gas adsorption system, wherein the inlet and outlet of a parallel two-stage cyclone gas-liquid separator in the vacuum extraction system are provided with electric switch valves, and the top of the electric switch valves is provided with an electromagnetic valve; a water ring vacuum pump of the vacuum pump set is connected with an inlet of the parallel two-stage cyclone gas-liquid separator, the water ring vacuum pump is connected with the gas-liquid separation tank and is connected with the plate heat exchanger in series, and the plate heat exchanger is connected with the refrigerator in series; the outlet of the parallel two-stage cyclone gas-liquid separator is connected with a precipitation water tank through a sewage pump, and the precipitation water tank is connected with deep water treatment equipment through a centrifugal pump; the vacuum extraction system is connected with the inlet of the dehumidifying device, and the outlet of the dehumidifying device is connected with the exhaust funnel through the activated carbon adsorption device. The invention combines the vacuum extraction system, the waste gas adsorption system and the control system together, and can continuously operate and treat the polluted underground water and the volatile and semi-volatile organic pollutants without stopping the machine.
Description
Technical Field
The invention belongs to the technical field of environmental engineering, and particularly relates to an integrated continuous operation soil and underground water pollution treatment device.
Background
At present, domestic soil pollution can be divided into three types, namely farmland pollution, industrial site pollution, mine pollution and the like. With the accelerated progress of industrialized urbanization, the strategy of urban 'two-in-three' is implemented, and the moved enterprises mainly comprise industrial enterprises of chemical industry, steel, nonferrous metallurgy, mechanical manufacturing, light industry and the like. The factory soil and underground water environment of the enterprises are seriously influenced by industrial activities and the pollution of three wastes, and the polluted soil needs to be repaired and treated after risk assessment to reduce the risk so as to meet the requirement of changing the land utilization property. In recent years, with the rapid expansion of the market scale of urban construction and development, urban land resources are becoming increasingly scarce. The replaced industrial land and the land utilization property can be changed, and the land with high environmental quality requirements, such as commercial land and residential land, is developed and constructed. Therefore, the industrial land is transformed after the urban land resources are re-planned, and the treatment of polluted soil and underground water becomes an urgent and necessary task.
The foreign soil remediation has the history of 40-50 years, forms a specialized and practical soil remediation technology system, a complete remediation industrial chain and a remediation market, and has a mature remediation process, matched remediation materials and complete remediation equipment. The soil pollution treatment and restoration work in China starts late, at present, more advanced technologies and equipment are introduced from foreign countries, or secondary development, digestion and absorption are carried out according to the national conditions of China on the basis of the foreign technologies and equipment to form localized technologies and equipment. The technical level and the engineering experience are still in the stages of practice, improvement, exploration and summary. The contaminated soil remediation is relatively fast in development in recent years, the technologies such as cement kiln cooperation, incineration, landfill and the like are mainly adopted at first, and the contaminated soil remediation is gradually developed into the mainstream technologies and combined remediation technologies such as thermal desorption, chemical oxidation, vapor phase extraction, solidification/stabilization, leaching remediation and the like, and meanwhile, an engineering technical system matched with in-situ remediation and ex-situ remediation is established.
The multiphase extraction technology is widely applied abroad and is relatively mature, and the domestic engineering application of the multiphase extraction technology for treating polluted soil and underground water is late, only a few pilot-scale tests are carried out, and large-scale engineering application demonstration and self-developed multiphase extraction equipment is not available. The multiphase extraction device has the advantages of simple structure, convenient transportation, low manufacturing and operating cost, high treatment efficiency and the like, and has wide demand prospect in the field of polluted soil and groundwater remediation.
Most of the existing underground water pollution treatment devices have the following defects: (1) the design of the equipment which adopts a plurality of vacuum pump sets for construction (2) and runs discontinuously (3) is complex, the cost and the energy consumption are overhigh, and the practicability is not strong.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an integrated continuous operation soil and underground water pollution treatment device, which utilizes a water ring vacuum pump to pump underground water, a floating oil layer, volatile and semi-volatile organic waste gas in an underground pollution area to the ground for multiphase separation, and performs sewage precipitation treatment and tail gas adsorption treatment by a vacuum extraction technology so as to control and repair organic pollutants in soil and underground water.
The invention provides an integrated continuous operation soil and underground water pollution treatment device, which consists of a vacuum extraction system and a waste gas adsorption system, wherein the vacuum extraction system comprises a parallel two-stage cyclone gas-liquid separator, a vacuum pump set, a refrigerator, a precipitation water tank and a sewage pump, the inlet and the outlet of the parallel two-stage cyclone gas-liquid separator are provided with electric switch valves, and the top of the parallel two-stage cyclone gas-liquid separator is provided with an electromagnetic valve; the vacuum pump set comprises a water ring vacuum pump, a gas-liquid separation tank and a plate heat exchanger, wherein the water ring vacuum pump is connected with an inlet of a parallel two-stage cyclone gas-liquid separator, the water ring vacuum pump is connected with the gas-liquid separation tank and is connected with the plate heat exchanger in series, and the plate heat exchanger is connected with a refrigerator in series; the outlet of the parallel two-stage cyclone gas-liquid separator is connected with a precipitation water tank through a sewage pump, and the precipitation water tank is connected with deep water treatment equipment through a centrifugal pump; the waste gas adsorption system comprises a dehumidifying device, an active carbon adsorption device and an exhaust funnel, the vacuum extraction system is connected with an inlet of the dehumidifying device, and an outlet of the dehumidifying device is connected with the exhaust funnel through the active carbon adsorption device.
As a further technical scheme of the invention, cooling water generated by the refrigerating machine is used for heat exchange of the water ring vacuum pump through the plate heat exchanger.
Further, sewage is extracted into a parallel two-stage cyclone gas-liquid separator under the condition that a water ring vacuum pump generates negative pressure, gas moves upwards along the axial direction and is discharged through a gas rising pipe, liquid descends under the action of self weight, when one cyclone gas-liquid separator reaches a high liquid level, an electric valve of a gas inlet and a gas outlet is closed, an electric valve of a liquid outlet is opened, a sewage discharge pump is opened, and the sewage is discharged into a precipitation water tank; meanwhile, the electric valves of the air inlet and the air outlet of the other cyclone gas-liquid separator are opened, and the electric valve of the liquid outlet is closed.
Furthermore, a liquid collecting tank is arranged below the vacuum extraction system and the waste gas adsorption system.
Furthermore, the bottom of the sedimentation water tank is provided with a slag discharge port, and the top of the sedimentation water tank is provided with a floating oil collecting port.
The invention has the advantages that by the vacuum extraction technology, underground water, a floating oil layer, volatile and semi-volatile organic waste gas in an underground pollution area are extracted to the ground by a water ring vacuum pump for multiphase separation, and sewage precipitation treatment and tail gas adsorption treatment are carried out, so that organic pollutants in soil and underground water are controlled and repaired. The parallel cyclone gas-liquid separator can be switched to use, so that the system can run uninterruptedly. The invention adopts a modular design, all main equipment is integrated in the corresponding frames, and the on-site assembly and disassembly only need to complete the assembly and disassembly of a small number of pipelines among the frames. The frame design has the collecting tank, can effectively reduce the secondary pollution risk.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the system comprises a cyclone gas-liquid separator, 2 a water ring vacuum pump, 3 a gas-liquid separation tank, 4 a plate heat exchanger, 5 a refrigerator, 6 a sewage pump, 7 a settling water tank, 8 a centrifugal pump, 9 a dehumidifying device, 10 an active carbon adsorption device and 11 an exhaust funnel.
Detailed Description
Referring to fig. 1, the present embodiment provides an integrated continuous operation soil groundwater pollution treatment device, which is composed of a vacuum extraction system and a waste gas adsorption system, wherein the vacuum extraction system includes a parallel two-stage cyclone gas-liquid separator 1, a vacuum pump set, a refrigerator 5, a precipitation water tank 7 and a sewage pump 6, the parallel two-stage cyclone gas-liquid separator 1 is switched for use, so that the system is continuously operated, the inlet and outlet of the parallel two-stage cyclone gas-liquid separator 1 are both provided with an electric switch valve, and the top of the parallel two-stage cyclone gas-liquid separator is provided with an electromagnetic valve for breaking vacuum, so that the sewage pump can conveniently extract sewage; the vacuum pump set comprises a water ring vacuum pump 2, a gas-liquid separation tank 3 and a plate heat exchanger 4, wherein the water ring vacuum pump 2 is connected with an inlet of a parallel two-stage cyclone gas-liquid separator 1, the water ring vacuum pump 2 is connected with the gas-liquid separation tank 3 and is connected with the plate heat exchanger 4 in series, the plate heat exchanger 4 is connected with a refrigerator 5 in series, and cooling water generated by the refrigerator 5 is used for heat exchange of the water ring vacuum pump 2 through the plate heat exchanger 4; the outlet of the parallel two-stage cyclone gas-liquid separator 1 is connected with a precipitation water tank 7 through a sewage pump 6, and the precipitation water tank 7 is connected with deep water treatment equipment through a centrifugal pump 8; the waste gas adsorption system comprises a dehumidifying device 9, an active carbon adsorption device 10 and an exhaust funnel 11, the vacuum extraction system is connected with an inlet of the dehumidifying device 9, and an outlet of the dehumidifying device 9 is connected with the exhaust funnel 11 through the active carbon adsorption device 10.
The parallel two-stage cyclone gas-liquid separator 1, the vacuum pump 2, the gas-liquid separation tank 3, the plate heat exchanger 4, the refrigerator 5, the sewage pump 6, the sedimentation water tank 7 and the centrifugal pump 8 are designed into a frame, and the dehumidifying device 9, the activated carbon adsorption device 10 and the exhaust funnel 11 are designed into a frame. A liquid collecting groove is designed at the bottom of the frame, so that secondary pollution is prevented.
Underground water (containing media such as gas, water and light oil) is extracted into the cyclone gas-liquid separator 1 under the condition of generating negative pressure by a water ring vacuum pump, the gas moves upwards along the axial direction and is discharged by a riser, liquid descends under the action of self weight, when one cyclone gas-liquid separator 1 reaches a high liquid level, an electric valve of an air inlet and an air outlet is closed, an electric valve of a liquid outlet is opened, a sewage pump 6 is opened, and sewage is discharged into a precipitation water tank 7; meanwhile, the electric valves of the air inlet and the air outlet of the other cyclone gas-liquid separator 1 are opened, and the electric valve of the liquid outlet is closed. Volatile and semi-volatile gas enters the dehumidifying device 9 through the water ring vacuum pump 2, is adsorbed by the active carbon adsorption device 10, and is exhausted through the exhaust funnel 11 after reaching the standard.
The equipment organically combines a vacuum extraction system, a waste gas adsorption system and a control system, and can continuously operate and treat polluted underground water and volatile and semi-volatile organic pollutants without shutdown; the structural design adopts the skid-mounted type, the occupied area is small, and the installation and the hoisting are convenient.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (5)
1. The integrated continuous operation soil and underground water pollution treatment device is characterized by comprising a vacuum extraction system and a waste gas adsorption system, wherein the vacuum extraction system comprises a parallel two-stage cyclone gas-liquid separator, a vacuum pump set, a refrigerator, a precipitation water tank and a sewage pump, the inlet and the outlet of the parallel two-stage cyclone gas-liquid separator are provided with electric switch valves, and the top of the parallel two-stage cyclone gas-liquid separator is provided with an electromagnetic valve; the vacuum pump set comprises a water ring vacuum pump, a gas-liquid separation tank and a plate heat exchanger, the water ring vacuum pump is connected with an inlet of the parallel two-stage cyclone gas-liquid separator, the water ring vacuum pump is connected with the gas-liquid separation tank and is connected with the plate heat exchanger in series, and the plate heat exchanger is connected with the refrigerator in series; the outlet of the parallel two-stage cyclone gas-liquid separator is connected with the precipitation water tank through the sewage pump, and the precipitation water tank is connected with the advanced water treatment equipment through a centrifugal pump; the waste gas adsorption system comprises a dehumidifying device, an active carbon adsorption device and an exhaust funnel, the vacuum extraction system is connected with an inlet of the dehumidifying device, and an outlet of the dehumidifying device is connected with the exhaust funnel through the active carbon adsorption device.
2. The integrated continuously operating soil groundwater pollution treatment device as claimed in claim 1, wherein the cooling water produced by the refrigerator is used for heat exchange of the water ring vacuum pump through the plate heat exchanger.
3. The integrated continuous operation soil and groundwater pollution treatment device as claimed in claim 1, wherein sewage is extracted into the parallel two-stage cyclone gas-liquid separator under the condition that negative pressure is generated by the water ring vacuum pump, gas moves upwards along the axial direction and is discharged through the riser, liquid descends under the action of self weight, when one cyclone gas-liquid separator reaches a high liquid level, the electric valves of the gas inlet and the gas outlet are closed, the electric valve of the liquid discharge port is opened, the sewage discharge pump is opened, and sewage is discharged into the precipitation water tank; meanwhile, the electric valves of the air inlet and the air outlet of the other cyclone gas-liquid separator are opened, and the electric valve of the liquid outlet is closed.
4. The integrated continuously operating soil groundwater pollution treatment device as claimed in claim 1, wherein a liquid collecting tank is arranged below the vacuum extraction system and the waste gas adsorption system.
5. The integrated continuous operation soil groundwater pollution treatment device as claimed in claim 1, wherein the bottom of the precipitation water tank is provided with a slag discharge port, and the top of the precipitation water tank is provided with a floating oil collecting port.
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| CN202122657289.2U CN216175292U (en) | 2021-11-02 | 2021-11-02 | Integrated continuous operation soil and underground water pollution treatment device |
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| CN202122657289.2U CN216175292U (en) | 2021-11-02 | 2021-11-02 | Integrated continuous operation soil and underground water pollution treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113909284A (en) * | 2021-11-02 | 2022-01-11 | 南京中船绿洲环保有限公司 | Integrated continuous operation soil and underground water pollution treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909284A (en) * | 2021-11-02 | 2022-01-11 | 南京中船绿洲环保有限公司 | Integrated continuous operation soil and underground water pollution treatment device |
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