TWI760027B - Micronano bubble treatment method and system thereof for oil polluted soils - Google Patents

Abstract

A micronano bubble treatment method includes: analyzing a pollutant concentration of an oil-polluted soil to obtain a pollutant concentration feature; according to the pollutant concentration feature, supplying a micronano bubble liquid to the oil-polluted soil; generating a plurality of micronano bubbles to treat a plurality of oil-polluted soil particles; bursting of micronano bubbles generating burst waves, energies and hydroxyl radicals among the a plurality of oil-polluted soil particles to separately form a separated pollutant liquid therefrom; and operating an oil floatation process to the separated pollutant liquid.

Description

Method and system for treating oil-contaminated soil with micro-nano bubbles

The present invention relates to a method and system for treating oil polluted soil with micronano bubbles; in particular, a method and system for treating diesel polluted soil with micronano bubbles; More particularly, it relates to a method and system for treating oil-contaminated soil by way of bursting shock waves of micro-nano bubbles, releasing energy and hydroxyl radicals.

Conventional related oil-contaminated soil treatment systems, such as the invention patent for "oil-contaminated soil water washing system" in Patent Publication No. TW-I688425 of the Republic of China, discloses an oil-contaminated soil water-washing system. In addition, the oil-contaminated soil washing system includes a first mud sand separator, a waste water treatment device, a clean water tank, a scrubbing and flotation device, a second mud sand separator and a turbid water pool.

Continuing from the above, the first mud-sand separator of the aforementioned No. TW-I688425 is used to receive a first turbid water and an oil-contaminated soil, and use the first turbid water to separate a coarse-grained sand and an oil-contaminated soil from the oil-contaminated soil. muddy water. In addition, the waste water treatment equipment is connected to the first mud sand separator, and the waste water treatment device is used for receiving and processing the muddy water from the first mud sand separator to obtain a sludge and a clean water.

Continuing from the above, the clean water tank of the aforementioned No. TW-I688425 is connected to the wastewater treatment equipment, and the clean water tank is used to receive the clean water from the wastewater treatment equipment. In addition, the scrubbing and flotation device is connected to the clear water tank and the first mud sand Separator, and the scrubbing and flotation equipment is used to receive the clean water from the clean water tank and the coarsely divided sand from the first mud sand separator, and scrub the coarsely divided sand to remove the coarse sand. Oil dirt of sand to get a mud sand water.

Continuing from the above, the second mud sand separator of the aforementioned No. TW-I688425 is connected to the scrubbing and flotation equipment, and the second mud sand separator is used to receive the mud sand water from the scrubbing and floating device, and separate the mud sand water from the mud sand water. A finely divided sand and a second turbid water. The turbid water tank is connected to the second mud sand separator and the first mud sand separator, and the turbid water pool is used for receiving the second muddy water from the second mud sand separator and transporting the second muddy water to the first mud sand separator , in order to separate the oil-contaminated soil.

However, the oil-contaminated soil water washing system of the aforementioned No. TW-I688425 only uses the combination of the first mud sand separator, waste water treatment equipment, scrubbing and flotation device and the second mud sand separator to repeatedly separate and treat oil products by water washing. It only contaminates soil, so it is not suitable for treating oil-contaminated soil in a fast or efficient way.

Another conventional related oil-contaminated soil treatment method, such as the invention patent of "The Method of Treating Oil-Contaminated Soil with Fermented Blood" in Patent Publication No. TW-I640616 of the Republic of China, which discloses a method of treating oil-contaminated soil with fermented blood method. The method for treating oil-contaminated soil with fermented blood comprises: step 1, mixing a fermented blood with an oil-contaminated soil and acting for 7 to 14 days.

Continuing from the above, the method for treating oil-contaminated soil with fermented blood in the aforementioned No. TW-I640616 includes: step 2, adding monoxide to the oil-contaminated soil, and acting for 1 day; the oxide is 30% ( w/w) hydrogen peroxide [H ₂ O ₂ ], and the oil-contaminated soil is selected as a heavy oil-contaminated soil.

Continuing from the above, the method for treating oil-contaminated soil with fermented blood described in the aforementioned No. TW-I640616 includes: step 3, adding the fermented blood and acting for 7 to 14 days to remove the oil-contaminated soil contained in the fermented blood. one oil The product is obtained by mixing an animal blood and an anaerobic sludge in a volume ratio of 3:1 to 1:1, and performing a fermentation reaction at a temperature of 26 to 37 ° C for 30 to 60 days, and the anaerobic sludge The sludge was selected as anaerobic sludge from a food factory.

However, the method for treating oil-contaminated soil with fermented blood in the aforementioned No. TW-I640616 only selects the method of using fermented blood from animal blood, anaerobic sludge from food factories and further adding the oxides to treat oil pollution Soil-only, so it is not suitable for treating oil-contaminated soils in a fast or efficient manner.

Another conventional related oil-contaminated soil treatment method, for example: Patent Publication No. TW-I558477 of the Republic of China "Method for Cleaning Oil-Contaminated Soil with Liquid Fertilizer", which discloses the use of a liquid fertilizer for cleaning oil-contaminated soil. The use of the liquid fertilizer for cleaning oil-contaminated soil includes: preparing a liquid fertilizer.

Continuing the above, the liquid fertilizer of the aforementioned No. TW-I558477 preparation comprises: making a bacterial classification suspension is to add a nutrient source in a dechlorinated water, to form a bacterial classification culture solution, and inoculate a new type of Trichoderma sp. .] in this bacterial classification culture liquid, and this novel Trichoderma in this bacterial classification culture solution is carried out aerobic cultivation to rapid growth phase; Add an organic matter raw material in this bacterial classification suspension, to form an initial fertilizer, And the organic material is selected from one of kitchen waste mixture, sour water, and decomposed compost mixture; the initial fertilizer is subjected to an aerobic liquid fertilization process to a decomposed stage to form the liquid fertilizer, and the liquid fertilizer contains a natural biological Surfactant.

In connection with the above, the use of the liquid fertilizer in the aforementioned No. TW-I558477 for cleaning oil-contaminated soil further comprises: performing an off-the-ground cleaning treatment method comprising: mixing an oil-contaminated soil and the liquid fertilizer to form a soil mixture; stirring the soil mixture; precipitating the soil mixture to stratify the soil mixture to form a supernatant; and draining the supernatant to remove oil contaminants in the oil-contaminated soil.

However, the above-mentioned method of using liquid fertilizer to clean oil-contaminated soil in No. TW-I558477 is only used to prepare the liquid fertilizer (containing natural biosurfactant) by inoculating the Trichoderma in the bacterial culture solution and adding the organic material. And the off-the-ground cleaning treatment method is only performed with the liquid fertilizer, so it is not suitable for treating oil-contaminated soil in a fast or efficient manner.

Another conventional related oil-contaminated soil treatment method, for example: Patent Publication No. TW-I471162 of the Republic of China "Method and Device for Removing Oil Pollution in Soil", which discloses a method for removing oil pollution in soil. The method for removing oil pollution in soil includes: step A, setting a raw material input port inside a mixing barrel so as to pour oil-contaminated soil.

Continuing from the above, the method for removing oil pollution from soil in the aforementioned No. TW-I471162 further comprises: step B, pouring hot water with a temperature of at least 40 degrees Celsius into the mixing barrel, and pouring a hot water pipeline into the mixing barrel It enters into the mixing barrel in a tangential direction, so that the entering hot water forms a rotating water flow in the mixing barrel.

Continuing from the above, the method for removing soil oil pollution in the aforementioned No. TW-I471162 further comprises: step C, stirring the inside of the mixing barrel; D, utilizing the hot water to suspend the oil pollution of the oil polluted soil, and allow a residual soil to form a settling.

However, the method for removing oil pollution from soil in the aforementioned No. TW-I471162 only utilizes pouring the hot water into the mixing bucket, the poured hot water pipeline enters the mixing bucket tangentially to the mixing bucket, and the mixing bucket enters the mixing bucket in a tangential direction. It is only agitated internally, so it is not suitable for treating oil-contaminated soils in a fast or efficient manner.

Obviously, the aforementioned No. TW-I688425, No. TW-I640616, No. TW-I558477 and No. TW-I471162 for the treatment of oil-contaminated soil systems, their devices and methods still need further improvements, such as: Treat oil-contaminated soils quickly or efficiently. The aforesaid patents are only for reference of the technical background of the present invention and to describe the current state of technological development, and are not intended to limit the scope of the present invention.

In view of this, in order to meet the above-mentioned needs, the present invention provides a method and system for treating oil-contaminated soil with micro-nano bubbles, which analyzes the contamination concentration from an oil-contaminated soil to obtain a contamination concentration characteristic, and analyzes the contamination concentration according to the contamination concentration. Concentration characteristics One micro-nano bubble liquid is transported into the oil-contaminated soil, and in the oil-contaminated soil, the micro-nano bubble liquid generates several micro-nano bubbles contacting several oil-contaminated soil particles, and several of the micro-nano bubbles are in contact with several oil-contaminated soil particles. The nano-bubble is ruptured to generate a detonation shock wave, a release energy, and a number of hydrogen and oxygen free radicals between the oil-contaminated soil particles, so as to separate from the oil-contaminated soil particles to form a separated oily liquid, so that a large amount of oil can be formed. Improve the cleaning efficiency of oil-contaminated soil.

The main purpose of the present invention is to provide a method and system for treating oil-contaminated soil with micro-nano bubbles, which analyzes the pollution concentration from an oil-contaminated soil to obtain a pollution concentration characteristic, and then converts an oil-contaminated soil according to the pollution concentration characteristic. The micro-nano-bubble liquid is transported into the oil-contaminated soil, and in the oil-contaminated soil, the micro-nano-bubble liquid generates several micro-nano-bubbles contacting several oil-contaminated soil particles, and several of the micro-nano-bubbles are ruptured and broken. Generate a bursting shock wave, release energy and several hydrogen and oxygen free bases between several oil-contaminated soil particles, so as to separate from several of the oil-contaminated soil particles to form a separated oily liquid, so as to achieve improved cleaning in oil-contaminated soil The purpose of oil pollution efficiency.

In order to achieve the above object, the system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention includes:

an oil-contaminated soil, which is accommodated in a soil accommodating unit, and the oil-contaminated soil is used for oil contamination removal treatment;

A pollution concentration feature, which is the pollution concentration in the oil-contaminated soil obtained through analysis;

At least one micro-nano bubble generator is connected to the soil accommodating unit, so as to transport a micro-nano bubble liquid into the oil-contaminated soil according to the pollution concentration characteristics, and the micro-nano bubbles in the oil-contaminated soil The bubbly liquid produces several micro-nano bubbles in contact with several oil-contaminated soil particles; and

an oil pollution flotation unit, which is arranged in the soil accommodating unit;

Several of the micro-nano bubbles are ruptured to generate a detonation shock wave, a release of energy, and several hydrogen and oxygen free radicals between several of the oil-contaminated soil particles, so as to separate from several of the oil-contaminated soil particles to form a separated oily liquid, and the oily flotation unit performs an oily flotation operation on the separated oily liquid.

In a preferred embodiment of the present invention, the pollution concentration characteristic is a pollution concentration characteristic curve or a pollution concentration characteristic model.

The micro-nano bubble generator according to the preferred embodiment of the present invention further includes a gas injector and a gas diffuser or a micro-nano bubble generator.

The soil accommodating unit of the preferred embodiment of the present invention further includes a stirring device for stirring and processing the oil-contaminated soil.

The soil accommodating unit of the preferred embodiment of the present invention further includes a heating device for heating and treating the oil-contaminated soil.

In order to achieve the above object, the method for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention comprises:

Conduct pollution concentration analysis from an oil-contaminated soil to obtain a pollution concentration characteristic;

delivering a micro-nano bubble liquid into the oil-contaminated soil according to the characteristics of the pollution concentration;

In the oil-contaminated soil, the micro-nano-bubble liquid generates several micro-nano-bubbles contacting several oil-contaminated soil particles;

Several of the micro-nano bubbles are ruptured to produce a burst shock wave, a release of energy and a number of hydrogen and oxygen free radicals based on the interaction of several of the oil-contaminated soil particles. time to separate from a plurality of the oil-contaminated soil particles to form a separated oil-contaminated liquid; and

The separated oily liquid is subjected to an oily flotation operation.

The pollution concentration characteristic of the preferred embodiment of the present invention includes a coarse particle oil content characteristic, a medium particle oil content characteristic and a fine particle oil content characteristic.

The pollution concentration characteristic of the preferred embodiment of the present invention is obtained by calculating a soil particle sorting method and a soil particle oil content.

The micro-nano bubble liquid in the preferred embodiment of the present invention is produced by a micro-nano bubble generator.

A preferred embodiment of the present invention adds a surfactant to the oil-contaminated soil.

1: Contamination analysis unit

10: Soil accommodating unit

11: Stirring device

12: Surfactant

2: Micro-nano bubble generator

21: Micro Nano Bubbles

22: Micro-Nano Bubble Burst

3: Oil flotation unit

4: Heating device

8: Oil-contaminated soil

8a: Soil particles

80: Characteristics of pollution concentration

81: Oily soil has been removed

90: has been floated and degreasing

Fig. 1 is a schematic block diagram of a system for treating oil-contaminated soil with micro-nano bubbles according to the first preferred embodiment of the present invention.

Figure 2: A schematic side view of a system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention.

Figure 3: A schematic flow diagram of a method for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention.

Figure 4: A schematic diagram of the relationship between the diameter of the micro-nano-bubble and its internal air pressure in the system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention.

Figure 5: A schematic diagram of the micro-nano-bubble treatment of oil-contaminated soil by a system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention.

Fig. 6 is a schematic block diagram of a system for treating oil-contaminated soil with micro-nano bubbles according to the second preferred embodiment of the present invention.

In order to fully understand the present invention, preferred implementations will be exemplified below Examples are described in detail with the accompanying drawings, and are not intended to limit the present invention.

The method and system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention can be selectively applied to remediation or removal of various leaks outside the crude oil extraction industry, oil transportation and storage industry, and oil product sales industry. Oil] or dumping pollution or industrial oil pollution caused by oil pollution in soil, land, port area, streams, rivers or lakes, etc., or can also be used in combination for remediation or removal of various on-site or off-site treatment of oil [oil] pollution soil, but it is not intended to limit the application scope of the present invention.

For example, the method and system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention use oil pollution to define various oil pollutions, and oil products include crude oil, total petroleum hydrocarbons [ total hydrocarbon), heavy oil (heavy oil) or fuel oil (bunker oil), cassava oil or various other oil products, but it is not intended to limit the application scope of the present invention.

Fig. 1 shows a block diagram of the system for treating oil-contaminated soil with micro-nano bubbles according to the first preferred embodiment of the present invention; Fig. 2 shows the side of the system for treating oil-contaminated soil with micro-nano bubbles according to the preferred embodiment of the present invention Schematic view, which corresponds to the treatment of oil-contaminated soil system with micro-nanobubbles in FIG. 1 . Referring to Figures 1 and 2, for example, the system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention includes a pollution analysis unit 1, at least one soil accommodating unit 10, at least one micro-nano bubble Rice bubble generator 2 and at least one oil flotation unit 3 .

Please refer to Figures 1 and 2 again. For example, the pollution analysis unit 1 can be selected from a computer unit, and the computer unit includes a desktop computer, a notebook computer or a laptop computer. ], a tablet personal computer, a workstation computer, a smart phone, or other devices with computer functions, and the contamination analysis unit 1 can be combined with a particle sorting unit to conduct analyze soil particles.

Referring again to Figures 1 and 2, for example, the soil accommodating unit 10 can be selected from a soil accommodating box, a soil accommodating chamber, a sample container to be tested, and a sample carrier to be tested 1. A sample collector to be tested, a testing device for the sample to be tested, a simulated experimental device for the sample to be tested, an artificial environment device for the sample to be tested, or a container with similar functions.

Referring again to Figures 1 and 2, for example, the micro-nano bubble generator 2 is connected to the soil accommodating unit 10 by appropriate technical means (eg, a liquid conveying pipeline), and the micro-nano bubble generator 2 is The bubble generator 2 has a high-pressure barrel or a high-pressure barrel device and a gas input end. In addition, the micro-nano bubble generator 2 further includes a gas injector and a gas diffuser or a micro-bubble generator or other peripheral equipment.

Please refer to Figures 1 and 2 again. For example, a pump is used to pump water and air into the high-pressure barrel. When the gas and water are fully mixed together in the high-pressure barrel, a mixed liquid is produced. The mixed solution is pushed to the micro-nano bubble generator 2 connected to the high pressure barrel, and the mixed solution is further impacted and pulverized by the micro-nano bubble generator 2 to generate a large amount of finer bubble water.

Please refer to Figures 1 and 2 again, for example, the oil flotation unit 3 is selected from a flotation solid-liquid separation device or a device with a similar flotation solid-liquid separation function, and the oil flotation unit 3 It is configured, connected and fixed at an appropriate position of the soil accommodating unit 10 (eg, the upper edge or other appropriate height positions) by appropriate technical means (eg, an integrated manner or a detachable manner).

FIG. 3 shows a schematic flow chart of a method for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention, which corresponds to the system for detecting plastic particles in the environment in FIGS. 1 and 2 . Please refer to Figures 1, 2 and 3, For example, the method for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention includes step S1: First, use the contamination analysis unit 1 with appropriate technical means (eg, automated, semi-automated, or manual) The soil accommodating unit 10 selects an oil-contaminated soil 8 or at least one oil-contaminated soil sample for contamination concentration analysis to obtain a contamination concentration characteristic 80, such as a characteristic of the relationship between soil particle diameter and contaminant (oil contamination) concentration or other relationship characteristics.

Referring again to Figures 1, 2 and 3, for example, the pollution concentration characteristic 80 of the oil-contaminated soil 8 is selected from a pollution concentration characteristic curve, a pollution concentration characteristic model or a mathematical model with similar pollution concentration characteristics [mathematical module], and the pollution concentration feature 80 of the oil-contaminated soil 8 can be combined with other auxiliary processing units, such as a surfactant supply amount calculation unit, that is, to calculate the relationship between oil pollutants and surfactants.

Please refer to Figures 1, 2 and 3 again. For example, the pollution concentration feature 80 of the oil-contaminated soil 8 (or the oil-contaminated soil sample) includes a coarse particle oil content feature, a medium particle oil content feature, and a Fine particle oil content characteristics. In addition, the pollution concentration characteristic 80 of the oil-contaminated soil 8 (or the oil-contaminated soil sample) is obtained by calculating a soil particle sorting method and a soil particle oil content.

Please refer to Figures 1, 2 and 3 again. For example, the method for treating oil-contaminated soil with micro-nano bubbles according to the preferred embodiment of the present invention includes step S2: then, using appropriate technical means [for example, automated means, Semi-automatic method or manual method] According to the pollution concentration characteristics 80 of the oil-contaminated soil 8, the micro-nano bubble generator 2 is used to appropriately transport a micro-nano bubble liquid to the oil-contaminated soil 8 of the soil accommodating unit 10. An appropriate location (eg: side bottom ring or other locations).

Please refer to Figures 1 and 2 again. For example, the soil accommodating unit 10 further includes a stirring device (stirrer) 11, so as to fully agitate by appropriate technical means (for example, adjusting the rotation speed according to the characteristics of the pollution concentration). The oil-contaminated soil 8 of the soil accommodating unit 10 is treated uniformly, so as to improve the efficiency and uniformity of the micro-nano bubbles in treating the oil-contaminated soil.

For example, the growth pattern of microbubbles in water theoretically consists of three consecutive stages. The first stage is the nucleation stage of microbubbles. When the pressure is released from the nozzle, the air is converted from the dissolved phase to the gaseous phase, and a fixed number of bubble core centers are formed. The first stage is completed when all the air in the dissolved phase is converted to the gas phase. The release of pressure in the first stage is not instantaneous, but is completed in a certain short time; however, it is generally assumed that the first stage is instantaneous. At the same time, the initial number of bubble core centers in the first stage will determine the actual size of the bubbles in the solution. Therefore, in the presence of a limited excess of dissolved air, when there are more bubble nucleation sites, a larger number of bubbles can be generated, and their particle size can be smaller.

Then, at the beginning of the second stage, the center of the bubble core can grow stably, and the total number of bubbles can maintain a certain number, and the phenomenon of coalescence does not occur. Then, during the third stage, the volume of the entire gas remains constant, but with the buoyancy and the combination of the bubbles, the diameter of the bubbles gradually increases, and the total number of bubbles gradually decreases until the bubbles float to the liquid surface .

FIG. 4 is a schematic diagram showing the relationship between the diameter of the micro-nano-bubble and its internal air pressure in the system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention. Please refer to Figure 4, when the temperature is 25°C [298K], when the diameter of the bubble is 1 μm, the internal pressure of the bubble can be as high as 4 times or more than the atmospheric pressure.

Please refer to Figure 4 again. For example, in general, there must be an inverse proportion between the internal pressure of the bubble and the diameter of the bubble, as shown on the left side of Figure 4. Therefore, when the micro-bubble bursts, it will eventually lead to A high pressure point will be created so that energy and hydroxyl radicals can be released.

Please refer to Figures 1, 2 and 3 again, for example, this The method for treating oil-contaminated soil with micro-nano-bubbles according to a preferred embodiment of the invention includes step S3: then, using appropriate technical means (for example: automated, semi-automated or manual) in the oil-contaminated soil of the soil accommodating unit 10 In 8, the micro-nano bubble liquid can appropriately generate several micro-nano bubbles (or nano-level bubbles) to contact several oil-contaminated soil particles, and the micro-nano bubbles have an appropriate diameter (eg, less than 1 μm).

Please refer to Figures 1, 2 and 3 again. For example, the method for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention includes step S4: then, using appropriate technical means [such as automated means, Semi-automatic method or manual method] Several of the micro-nano bubbles are ruptured to generate a burst shock wave, a release of energy, and a number of hydrogen and oxygen free bases between several of the oil-contaminated soil particles, so as to separate the oil-contaminated soil from several The particles separate to form a separated oily liquid.

FIG. 5 shows a schematic diagram of micro-nano-bubble treatment of oil-contaminated soil by a system for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention. Please refer to Figures 1, 2, 4 and 5. For example, firstly, the micro-nano bubble generator 2 or the bubble generator utilizes the bubble shrinking effect to obtain several micro-nano bubbles 21, and a plurality of the micro-nano bubbles 21 are obtained. In the process of rising to the water surface, the nano-bubble 21 produces bubbles that burst to form several micro-nano-bubble bursts 22, and the high-pressure shock waves, energy and hydroxyl radicals are released at the moment of the bubble bursting reaction, and then several soils are released. Particles (soil particle) 8a adhered contamination oil separation and removal.

Please refer to Figures 1, 2, 4 and 5. For example, compared with ordinary bubbles, the size of the micro-nano bubbles 21 tends to gradually decrease, and because of the long residence time and the dissolution of the gas inside the bubbles In addition, the interface of the micro-nano-bubble 21 also has strong hydrogen bonds similar to gas hydrate.

Please refer to Fig. 5 again. For example, since the hydrophobic oil has a better affinity with the surface of the micro-nano bubbles 21, in the During the process of the micro-nano bubbles 21 continuing to float, the micro-nano bubbles 21 can continue to capture oil, and at the same time, it can also avoid the re-adhesion reaction between the oil and several of the soil particles 8a, thereby achieving the improvement of micro-nano bubbles. Efficiency of air bubbles in treating oil-contaminated soils.

Please refer to Figures 1, 2 and 3 again. For example, the method for treating oil-contaminated soil with micro-nano bubbles according to a preferred embodiment of the present invention includes step S5: Next, using appropriate technical means [such as automated means, Semi-automatic method or manual method] use the oil-stained removal unit 3 to perform an oil-stained removal operation on the separated oil-stained liquid, so as to obtain a floated and de-oiled soil 90 and a de-oiled soil 81 .

FIG. 6 shows a schematic block diagram of a system for treating oil-contaminated soil with micro-nano bubbles according to the second preferred embodiment of the present invention. Referring to Figures 1, 2 and 6, compared to the first embodiment, the soil accommodating unit 10 of the second preferred embodiment of the present invention further includes a heating device 4 or a similar heating function and the heating device 4 is appropriately configured and assembled on the soil accommodating unit 10, so as to heat the oil in the soil accommodating unit 10 at a predetermined temperature (for example: 25°C) according to the pollution concentration characteristic 80 Contaminated soil 8.

Please refer to Figures 1, 2 and 6 again, another preferred embodiment of the present invention can select an interface in the soil accommodating unit 10 by appropriate technical means (eg, automated, semi-automated or manual). The active agent 12 is added to the oil-contaminated soil 8 , and an appropriate amount of the surfactant 12 can be added by appropriate technical means (eg, pipeline transportation) according to the pollution concentration characteristic 80 .

The aforementioned preferred embodiment is only an example of the present invention and its technical features, and the technology of this embodiment can still be implemented in various substantially equivalent modifications and/or alternative ways; therefore, the scope of the right of the present invention is subject to the appended patent application The scope defined by the scope shall prevail. The copyright in this case is restricted to be used for the purposes of the ROC patent application.

1: Contamination analysis unit

2: Micro-nano bubble generator

3: Oil flotation unit

8: Oil-contaminated soil

80: Characteristics of pollution concentration

81: Oily soil has been removed

90: has been floated and degreasing

Claims (10)

A system for treating oil-contaminated soil with micro-nano bubbles, comprising: an oil-contaminated soil, which is accommodated in a soil accommodating unit, and the oil-contaminated soil is used for oil contamination removal treatment; a contamination concentration profile obtained by conducting contamination concentration analysis on the oil-contaminated soil; and At least one micro-nano bubble generator is connected to the soil accommodating unit, so as to transport a micro-nano bubble liquid into the oil-contaminated soil according to the pollution concentration characteristics, and the micro-nano bubbles in the oil-contaminated soil The bubble liquid produces several micro-nano bubbles that contact several oil-contaminated soil particles; Several of the micro-nano bubbles are ruptured to generate a detonation shock wave, a release energy, and several hydrogen and oxygen free radicals between several of the oil-contaminated soil particles, so as to separate from several of the oil-contaminated soil particles to form a separated Oily fluid. The system for treating oil-contaminated soil with micro-nano-bubbles according to item 1 of the claimed scope, wherein the pollution concentration characteristic is a pollution concentration characteristic curve or a pollution concentration characteristic model. The system for treating oil-contaminated soil with micro-nano-bubble according to claim 1, wherein the micro-nano-bubble generator further comprises a gas injector and a gas dispersing tray. According to the system for treating oil-contaminated soil with micro-nano-bubbles as described in item 1 of the claimed scope, the soil accommodating unit further comprises a stirring device for stirring and treating the oil-contaminated soil. According to the system for treating oil-contaminated soil with micro-nano bubbles as described in item 1 of the scope of the patent application, the system further comprises an oil-contamination flotation unit, and the oil-contamination flotation unit is disposed in the soil accommodating unit, and the oil-contamination flotation unit is Carry out an oil pollution removal operation on the separated oil pollution liquid. A method for treating oil-contaminated soil with micro-nano bubbles, comprising: Conduct pollution concentration analysis from an oil-contaminated soil to obtain a pollution concentration characteristic; delivering a micro-nano bubble liquid into the oil-contaminated soil according to the characteristics of the pollution concentration; The micro-nano-bubble liquid in the oil-contaminated soil generates a plurality of micro-nano-bubbles contacting a plurality of oil-contaminated soil particles; and Several of the micro-nano bubbles are ruptured to generate a detonation shock wave, a release of energy and a number of hydrogen and oxygen free bases between several of the oil-contaminated soil particles, so as to separate from several of the oil-contaminated soil particles to form a separated oil pollution liquid. The method for treating oil-contaminated soil with micro-nano-bubbles according to item 6 of the claimed scope, wherein the pollution concentration characteristic includes a coarse particle oil content characteristic, a medium particle oil content characteristic and a fine particle oil content characteristic. According to the method for treating oil-contaminated soil with micro-nano bubbles as described in item 6 of the claimed scope, the pollution concentration characteristic is obtained by calculating a soil particle sorting method and a soil particle oil content. According to the method for treating oil-contaminated soil with micro-nano bubbles as described in item 6 of the scope of the patent application, the separated oil-contaminated liquid is subjected to an oil-contamination floating operation. The method for treating oil-contaminated soil with micro-nano bubbles according to item 6 of the scope of the patent application, wherein a surfactant is added to the oil-contaminated soil.

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