CN220591102U - Integrated repair system for petroleum hydrocarbon contaminated soil and underground water - Google Patents
Integrated repair system for petroleum hydrocarbon contaminated soil and underground water Download PDFInfo
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- CN220591102U CN220591102U CN202322067425.1U CN202322067425U CN220591102U CN 220591102 U CN220591102 U CN 220591102U CN 202322067425 U CN202322067425 U CN 202322067425U CN 220591102 U CN220591102 U CN 220591102U
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- oil recovery
- groundwater
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000002689 soil Substances 0.000 title claims abstract description 34
- 239000003209 petroleum derivative Substances 0.000 title claims description 16
- 235000019198 oils Nutrition 0.000 claims abstract description 43
- 238000011084 recovery Methods 0.000 claims abstract description 38
- 238000007667 floating Methods 0.000 claims abstract description 34
- 238000000605 extraction Methods 0.000 claims abstract description 25
- 239000003673 groundwater Substances 0.000 claims abstract description 25
- 238000005273 aeration Methods 0.000 claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 239000003814 drug Substances 0.000 claims abstract description 10
- 229940079593 drug Drugs 0.000 claims abstract description 7
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 7
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 16
- 238000005067 remediation Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 239000012855 volatile organic compound Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002680 soil gas Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
- Physical Water Treatments (AREA)
Abstract
The integrated repairing system comprises a floating oil recovery system, a vapor extraction system, an aeration system, a high-pressure drug injection system, a tail gas treatment system and an oil-water separation system, wherein the floating oil recovery system and the vapor extraction system treat pollutants of soil and groundwater in a repairing well at the same time, and when the treating capacity of the floating oil recovery system and the vapor extraction system reaches a critical interval, the aeration system and the high-pressure drug injection system deeply treat pollutants of the groundwater, and the tail gas treatment system and the oil-water separation system separate tail gas and oil-water mixture.
Description
Technical Field
The utility model belongs to the field of soil and groundwater remediation, and particularly relates to an integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater.
Background
For the pollution source area with light free phase petroleum hydrocarbon, the first step of repairing is to extract the free phase petroleum hydrocarbon from the gas-covered zone and the saturated zone by physical means. The principle of physical extraction of petroleum hydrocarbon is to extract soil gas, groundwater, floating oil and the like of an underground polluted area to the ground for phase separation and treatment by vacuum extraction means, and the method specifically comprises the following steps: the method is characterized by multiphase extraction, soil vapor extraction, biological ventilation, groundwater aeration and biological aeration, and aims at different pollution sites and sites under hydrogeological conditions.
At present, the applied pollution in-situ remediation is often only singly utilized by biological remediation, vapor extraction remediation technology and aeration remediation technology, and petroleum hydrocarbon pollutants in soil and underground water cannot be completely remediated, so that a system is required to further improve the remediation effect.
Disclosure of Invention
The utility model aims to overcome the problems in the prior art and provide an integrated restoration system for petroleum hydrocarbon polluted soil and underground water.
The utility model is realized by the following technical scheme:
the integrated repairing system comprises a floating oil recovery system, a vapor extraction system, an aeration system, a high-pressure drug injection system, a tail gas treatment system and an oil-water separation system, wherein the floating oil recovery system and the vapor extraction system treat pollutants of soil and groundwater in a repairing well at the same time, and when the treating capacity of the floating oil recovery system and the vapor extraction system reaches a critical interval, the aeration system and the high-pressure drug injection system deeply treat pollutants of the groundwater, and the tail gas treatment system and the oil-water separation system separate tail gas and oil-water mixture.
The floating oil recovery system comprises a floating oil recovery pump and a floating oil recovery tank, wherein the floating oil recovery pump and the floating oil recovery tank are connected through a pipeline, an inlet pipe of the floating oil recovery pump 7 is arranged at a position 0.5cm-1cm above an oil-water interface of an underground restoration well, LNAPL substances above the underground water surface are separated out through the floating oil recovery pump and enter the floating oil recovery tank, and favorable conditions are provided for subsequent vapor extraction and biological treatment.
The vapor extraction system comprises a vapor-liquid separation tank, a vacuum pump and a drainage pump, wherein one end of the vacuum pump is communicated with the vapor-liquid separation tank, the other end of the vacuum pump is communicated with the activated carbon adsorption tank, and the bottom of the vapor-liquid separation tank is communicated with the drainage pump. And finally connected with an exhaust gas treatment system. The vapor extraction system is connected with the restoration well through a pipeline, and volatile organic compounds in the underground soil and underground water are extracted through the vacuum degree generated by the operation of a vacuum pump, so that the purposes of restoring and purifying the soil and the underground water are achieved. The water stored in the gas-liquid separation tank is discharged to the sewage treatment system through the drainage pump at regular intervals. The tail gas treatment system is an activated carbon adsorption tank, and qualified tail gas after final treatment is directly discharged.
The aeration system comprises a first flowmeter and an aeration fan, wherein the first flowmeter is communicated with the aeration fan through a pipeline, the aeration fan injects air into the underground water through the first flowmeter, and the first flowmeter injects air into the underground water through a pipeline to play a role in stripping volatile organic compounds in soil and the underground water.
The high-pressure injection system comprises a high-pressure injection pump and a second flowmeter, wherein the high-pressure injection pump is communicated with the second flowmeter through a pipeline, the second flowmeter is connected with the site internal injection well, and the high-pressure injection pump is communicated with the medicament storage tank.
The oil-water separation system comprises a water suction pump and an oil-water separator, wherein the water suction pump is communicated with the oil-water separator, the water suction pump is connected with a dewatering well in a site through a pipeline, an oil-water mixture in groundwater in the dewatering well is pumped out through the water suction pump, then water and oil slick are separated through the oil-water separator, and the water and the oil slick separated by the oil-water separator enter the sewage treatment system and the oil slick recovery tank respectively.
All the systems are arranged in one container, and the operation of each system is monitored and controlled uniformly through a PLC control system.
The beneficial effects of the utility model are as follows:
according to the utility model, multiphase extraction, groundwater aeration, biological ventilation technology and biological restoration technology are combined, under the condition that soil and groundwater are polluted, volatile organic matters in the soil can be removed through gas phase extraction, the air flow in the soil during gas phase extraction can be enhanced through biological aeration, the oxygen content in the soil can be increased, and the metabolism capability of microorganisms in the soil can be enhanced, so that the restoration effect and restoration efficiency are improved, the equipment is simple to install, the operation cost is low, and the light non-aqueous liquid above the groundwater surface can be recycled, and the restoration treatment can be carried out on the soil and groundwater polluted by volatile organic matters, semi-volatile organic matters and petroleum hydrocarbon.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings. Specific embodiments of the present utility model are given in detail by the following examples and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater in accordance with the present utility model.
Reference numerals: 1-vacuum pump, 2-gas-liquid separation tank, 3-active carbon adsorption tank, 4-drainage pump, 5-aeration pump, 6-flowmeter I, 7-oil slick recovery pump, 8-water pump, 9-oil-water separator, 10-oil slick recovery tank, 11-high pressure injection pump, 12-flowmeter II.
Detailed Description
As shown in fig. 1: the floating oil recovery system comprises a floating oil recovery pump 7 and a floating oil recovery tank 10, wherein the floating oil recovery pump 7 and the floating oil recovery tank 10 are connected through a pipeline, an inlet pipe of the floating oil recovery pump 7 is arranged at a position 0.5cm-1cm above an oil-water interface of an underground restoration well, and LNAPL substances above the underground water surface are separated out through the floating oil recovery pump 7 and enter the floating oil recovery tank 10, so that favorable conditions are provided for subsequent vapor extraction and biological treatment.
The vapor extraction system of (1) comprises a vapor-liquid separation tank 2, a vacuum pump 1 and a drainage pump 4, wherein one end of the vacuum pump 1 is communicated with the vapor-liquid separation tank 2, the other end of the vacuum pump 1 is communicated with an activated carbon adsorption tank 3, and the bottom of the vapor-liquid separation tank 2 is communicated with the drainage pump 4. And finally connected with an exhaust gas treatment system. The vapor extraction system is connected with the restoration well through a pipeline, and volatile organic compounds in the underground soil and underground water are extracted through the vacuum degree generated by the operation of a vacuum pump, so that the purposes of restoring and purifying the soil and the underground water are achieved. The stored water in the gas-liquid separation tank 2 is periodically discharged to the sewage treatment system through the drain pump 4. The tail gas treatment system is an activated carbon adsorption tank 3, and qualified tail gas after final treatment is directly discharged.
The aeration system comprises a first flowmeter 6 and an aeration fan 5, wherein the first flowmeter 6 is communicated with the aeration fan 5 through a pipeline, the aeration fan 5 injects air into the underground water through the first flowmeter 6, and the first flowmeter 6 injects air into the underground water through a pipeline to play a role in stripping volatile organic compounds in soil and the underground water.
The high-pressure injection system of the system comprises a high-pressure injection pump 11 and a second flowmeter 12, wherein the high-pressure injection pump 11 is communicated with the second flowmeter 12 through a pipeline, the second flowmeter 12 is connected with an in-site injection well, and the high-pressure injection pump 11 is communicated with a medicament storage tank. The prepared liquid repairing agent is injected into the polluted layer of the soil and the groundwater through the high-pressure drug injection system, so that the effect of repairing the polluted soil and the groundwater is achieved.
The oil-water separation system comprises a water suction pump 8 and an oil-water separator 9, wherein the water suction pump 8 is communicated with the oil-water separator 9, the water suction pump 8 is connected with a dewatering well in a site through a pipeline, an oil-water mixture in underground water in the dewatering well is pumped out through the water suction pump 8, then water and oil slick are separated through the oil-water separator 9, and the water and the oil slick separated by the oil-water separator 9 enter a sewage treatment system and an oil slick recovery tank 10 respectively.
The utility model protects only the mechanical structural parts, and the control parts related to the mechanical structural parts are not within the protection scope of the utility model.
Claims (6)
1. An integrated repair system for petroleum hydrocarbon contaminated soil and groundwater, which is characterized in that: the system comprises a floating oil recovery system, a vapor extraction system, an aeration system, a high-pressure drug injection system, a tail gas treatment system and an oil-water separation system, wherein the floating oil recovery system and the vapor extraction system treat pollutants of soil and groundwater in a remediation well at the same time, and when the treatment capacity of the floating oil recovery system and the vapor extraction system reaches a critical interval, the aeration system and the high-pressure drug injection system deeply treat pollutants of groundwater, and the tail gas treatment system and the oil-water separation system separate tail gas and an oil-water mixture.
2. An integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater according to claim 1 wherein: the floating oil recovery system comprises a floating oil recovery pump (7) and a floating oil recovery tank (10), wherein the floating oil recovery pump (7) and the floating oil recovery tank (10) are connected through a pipeline, an inlet pipe of the floating oil recovery pump 7 is arranged at a position 0.5cm-1cm above an oil-water interface of an underground restoration well, and LNAPL substances above the underground water surface are separated out through the floating oil recovery pump (7) and enter the floating oil recovery tank (10).
3. An integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater according to claim 1 wherein: the gas phase extraction system comprises a gas-liquid separation tank (2), a vacuum pump (1) and a drainage pump (4), wherein one end of the vacuum pump (1) is communicated with the gas-liquid separation tank (2), the other end of the vacuum pump (1) is communicated with an activated carbon adsorption tank (3), the bottom of the gas-liquid separation tank (2) is communicated with the drainage pump (4), the gas-liquid separation tank is finally connected with a tail gas treatment system, the gas phase extraction system is connected with a restoration well through a pipeline, volatile organic compounds in underground soil and underground water are extracted through the vacuum degree generated by the operation of the vacuum pump (1), so that the aim of restoring and purifying the soil and the underground water is fulfilled, and stored water in the gas-liquid separation tank (2) is periodically discharged to a sewage treatment system through the drainage pump (4), and the tail gas treatment system is the activated carbon adsorption tank (3).
4. An integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater according to claim 1 wherein: the aeration system comprises a first flowmeter (6) and an aeration fan (5), wherein the first flowmeter (6) is communicated with the aeration fan (5) through a pipeline, the aeration fan (5) injects air into the underground water through the first flowmeter (6), and the first flowmeter (6) injects air into the underground water through a pipeline to play a role in stripping volatile organic compounds in soil and the underground water.
5. An integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater according to claim 1 wherein: the high-pressure injection system comprises a high-pressure injection pump (11) and a second flowmeter (12), wherein the high-pressure injection pump (11) and the second flowmeter (12) are communicated through a pipeline, the second flowmeter (12) is connected with the in-site injection well, and the high-pressure injection pump (11) is communicated with the medicament storage tank.
6. An integrated remediation system for petroleum hydrocarbon contaminated soil and groundwater according to claim 1 wherein: the oil-water separation system comprises a water suction pump (8) and an oil-water separator (9), wherein the water suction pump (8) is communicated with the oil-water separator (9), the water suction pump (8) is connected with a dewatering well in a site through a pipeline, an oil-water mixture in groundwater in the dewatering well is pumped out through the water suction pump (8), then water and oil slick are separated through the oil-water separator (9), and the water and the oil slick separated by the oil-water separator (9) enter the sewage treatment system and the oil slick recovery tank (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322067425.1U CN220591102U (en) | 2023-08-03 | 2023-08-03 | Integrated repair system for petroleum hydrocarbon contaminated soil and underground water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322067425.1U CN220591102U (en) | 2023-08-03 | 2023-08-03 | Integrated repair system for petroleum hydrocarbon contaminated soil and underground water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220591102U true CN220591102U (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322067425.1U Active CN220591102U (en) | 2023-08-03 | 2023-08-03 | Integrated repair system for petroleum hydrocarbon contaminated soil and underground water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220591102U (en) |
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2023
- 2023-08-03 CN CN202322067425.1U patent/CN220591102U/en active Active
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