CN209439189U - A kind of device of mobile quickly elution oil-polluted soils - Google Patents
A kind of device of mobile quickly elution oil-polluted soils Download PDFInfo
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- CN209439189U CN209439189U CN201821950341.5U CN201821950341U CN209439189U CN 209439189 U CN209439189 U CN 209439189U CN 201821950341 U CN201821950341 U CN 201821950341U CN 209439189 U CN209439189 U CN 209439189U
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Abstract
The utility model relates to a kind of device of mobile quickly elution oil-polluted soils, the device of the elution oil-polluted soils includes: pretreatment unit, oxidation desorption apparatus, settling separation device, the first dregs of fat collecting vessel, gas floatation separation device and the second dregs of fat collecting vessel；It is connected by the first slush pump with pretreatment unit on the left of the oxidation desorption apparatus, right side is connected by the second slush pump with settling separation device；Pretreatment unit includes elevating hopper, rotary screen, homogeneous tank and waste collection drum；Settling separation device is connected by dregs of fat discharge outlet with the first dregs of fat collecting vessel, and settling separation device and the first dregs of fat collecting vessel pass through sedimentation separation silt particle discharge outlet, collecting vessel silt particle discharge outlet respectively and be connected through jet pump and pipe-line mixer with gas floatation separation device.Oil-polluted soils are handled using the device of the elution oil-polluted soils, have the characteristics that de-oiling efficiency is high, Deal with Time is short, it can be achieved that skid.
Description
Technical field
The utility model relates to the techniques and device of a kind of mobile quickly elution oil-polluted soils.
Background technique
The oil-polluted soils generated in oilfield exploitation and storage and transport process, which have environment and human health, to be seriously endangered,
It is put into China " National Hazard waste catalogue ", and " national promotion law on cleaner production " and " solid waste environmental pollution prevention and control method "
Also requirement must carry out harmless treatment to it.It develops and the oil-polluted soils recovery technique of China's national situation is suitble to carve with equipment
Do not allow to delay.
The method of previous processing oil-polluted soils is mainly surfactant washing method and thermal desorption method.Surfactant
Ablution is to realize that the solubilising to petroleum hydrocarbon in soil elutes, currently used cleaning agent is by selecting cleaning agent appropriate
Small molecule anionic, nonionic surfactant, existing research show small molecule anionic, nonionic surfactant cleaning stone
There are two main problems for soil contaminated by crude oil: (1) hydrophobic inner core for forming micella is small, causes it to soil middle and high concentration petroleum wastewater
The cleaning efficiency for contaminating object is lower；(2) petroleum hydrocarbon cleaned in soil needs higher temperature (60-90 DEG C), it is therefore desirable to additional
Heat source is unfavorable for mobile elution equipment development.In recent years, thermal desorption handles spy thorough, that resource utilization is high because it has
Point is used for the depth reparations of oil-polluted soils, but still has that energy consumption is excessively high, stability is poor, secondary pollution is serious and removable
The urgent problems to be solved such as property difference.Oil field oil pollution place is mostly more dispersed, at present the way of repairing polluted soil be by
It is excavated by petroleum hydrocarbon contaminated soil, is transported to centralized processing website, using fixed processing equipment to oil pollution soil
Earth carries out dystopy processing, causes contaminated soil that cannot timely and effectively be repaired, develops remedying oil-polluted soils
Mobile quickly elution processes and device have urgent current demand, but have not been reported.
Utility model content
The purpose of this utility model is to provide the technique and device of a kind of mobile quickly elution oil-polluted soils, will
It is handled using the fast and harmless of oil-polluted soils.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of technique of mobile quickly elution oil-polluted soils, includes the following steps:
1) screening modulation: screening removal of impurities, material grinding and solid-to-liquid ratio regulation are carried out to oil-polluted soils and handled；
2) using Fenton-type reagent as oxidating chemicals, modulated oil-polluted soils, oxidating chemicals will oxidation desorption: be sieved
It is added in oxidation desorption apparatus, is sufficiently stirred, realize petroleum hydrocarbon from soil solid particulate matter surface desorption；
3) settle and separate: after stopping stirring, mud is squeezed into settling separation device with pump, through standing sedimentation, desorption is come out
Oil reservoir float on the mud water surface；
4) oil reservoir on bubbling through the water column primary water-oil separating: is struck off using Oil scraper；
5) jet air float: the mud of oil slick will be struck off using jet pump, squeezes into gas floatation separation device；
6) secondary water-oil separating: the oil reservoir on the water surface is floated on after striking off jet air float using Oil scraper.
Above-mentioned technique in step 6) and then carries out following step 7) and 8),
7) flocculation-air floating: flocculant is added and carries out flocculation reaction；
8) three-level water-oil separating: microbubble is discharged using molten gas release device, by the suspended matter lighter than water and oil pollution
Object is adhered to band on bubble and forms oil-containing dross on liquid level to liquid level, strike off through Oil scraper.
A kind of device of mobile quickly elution oil-polluted soils, which is characterized in that the elution oil-polluted soils
Device includes: pretreatment unit (1), oxidation desorption apparatus (2), settling separation device (3), the first dregs of fat collecting vessel (4), air bearing
Separator (5) and the second dregs of fat collecting vessel (6)；Pass through the first slush pump (7) on the left of the oxidation desorption apparatus (2)
It is connected with pretreatment unit (1), right side is connected by the second slush pump (8) with settling separation device (3)；
Pretreatment unit (1) includes elevating hopper (10), rotary screen (11), homogeneous tank (12) and waste collection drum (13)；
Settling separation device (3) is connected by the first dregs of fat discharge outlet (15) with the first dregs of fat collecting vessel (4), sedimentation separation
Device (3) and the first dregs of fat collecting vessel (4) pass through sedimentation separation silt particle discharge outlet (16), collecting vessel silt particle discharge outlet respectively
(17) it is connected through jet pump (9) and pipe-line mixer (18) with gas floatation separation device (5)；Gas floatation separation device (5) passes through second
Dregs of fat discharge outlet (23) is connected with the second dregs of fat collecting vessel (6)；
The oxidation desorption apparatus (2) is equipped with deceleration blender (14), and is furnished with the first chemicals dosing plant (I) and second simultaneously
Chemicals dosing plant (II)；Third chemicals dosing plant (III) and the 4th chemicals dosing plant are installed on the feed pipe of gas floatation separation device (5)
(Ⅳ)；Settling separation device (3) and gas floatation separation device (5) install the first Oil scraper that can be moved along guide rail respectively above
(24), the second Oil scraper (25)；Gas floatation separation device (5) is equipped with molten gas release device；
Oxidation desorption is respectively set in oxidation desorption apparatus (2), settling separation device (3) and gas floatation separation device (5) bottom
Mud discharging mouth (26), sedimentation separation mud discharging mouth (27), dissolved air flotation mud discharging mouth (28)；First dregs of fat collecting vessel (4) and second dregs of fat
The first oil discharge outlet (29), the second oil discharge outlet (30) is respectively set in collecting vessel (6).
Compared with prior art, the utility model has the beneficial effects that
Utilize the technique and processing oil-polluted soils of the utility model, the spy high with de-oiling efficiency, Deal with Time is short
Point, the utility model relates to the equipment of processing oil-polluted soils can realize skid, form mobile quickly elution petroleum
The outfit of contaminated soil.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of the mobile quickly elution oil-polluted soils of the present invention.
Specific embodiment
For the content for being best understood from the utility model, the utility model is further described below by embodiment,
But the cited case is not intended to limit the protection scope of the utility model.
The technique of the mobile quickly elution oil-polluted soils of the utility model, specifically include the following steps:
1) screening modulation: screening removal of impurities, material grinding and solid-to-liquid ratio regulation are carried out to oil-polluted soils and handled；
2) using Fenton-type reagent as oxidating chemicals, modulated oil-polluted soils, oxidating chemicals will oxidation desorption: be sieved
It is added in oxidation desorption apparatus, is sufficiently stirred, realize petroleum hydrocarbon from soil solid particulate matter surface desorption；
3) settle and separate: after stopping stirring, mud is squeezed into settling separation device with pump, through standing sedimentation, desorption is come out
Oil reservoir float on the mud water surface；
4) oil reservoir on bubbling through the water column primary water-oil separating: is struck off using Oil scraper；
5) jet air float: the mud of oil slick will be struck off using jet pump, squeezes into gas floatation separation device；
6) secondary water-oil separating: the oil reservoir on the water surface is floated on after striking off jet air float using Oil scraper；
7) flocculation-air floating: flocculant is added and carries out flocculation reaction；
8) three-level water-oil separating: microbubble is discharged using molten gas release device, by the suspended matter lighter than water and oil pollution
Object is adhered to band on bubble and forms oil-containing dross on liquid level to liquid level, strike off through Oil scraper.
The Fenton-type reagent includes oxidant and oxidation promoter.Oxidant is hydrogen peroxide.Oxidation promoter component includes:
Citric acid, sodium hydroxide, hydrogen chloride and divalent iron salt.
Each component in oxidating chemicals accounts for the matter of oxidating chemicals and silt particle (sieving modulated oil-polluted soils) gross mass
Amount score (being calculated with adding preceding material mass) is respectively as follows: hydrogen peroxide and accounts for 0.02~2.8%；Citric acid accounts for 0.15~
0.35%；Sodium hydroxide accounts for 0.12~0.28%；Hydrogen chloride accounts for 0.05~0.3%；Divalent iron salt accounts for 0.2~0.8%.
The oil-polluted soils for entering oxidation desorption apparatus in step 2) first pass through modulation in advance, into oxidation desorption apparatus
The solid-to-liquid ratio (solid-to-liquid ratio here refers to the ratio between the modulated oil-polluted soils of screening and water) of material is 1g/1mL-1g/30mL.
The standing sedimentation time is 10-60min in step 3).
Jet stream pump lift is 10-100m in the step 5), and rate of release is fast.
In step 7), with aluminium polychloride (PAC) be coagulant, with polyacrylamide (PAM) be flocculation aid, coagulant and
Flocculation aid constitutes flocculant.PAC dosage is 5-500mg/L, and PAM dosage is 0.1-50mg/L.
The dissolved-air pressure of molten gas release device is 0.1-0.4Mpa in step 8).
After the screened removal of impurities of oil-polluted soils, grinding modulation, Fenton-type reagent, warp is added in injection oxidation desorption apparatus
It is sufficiently stirred, adheres to petroleum hydrocarbon molecule, after microbubble floats to the water surface, the oil of load using the microbubble generated in reaction process
Drop convergence forms oil film, realizes petroleum hydrocarbon from soil solid particulate matter surface desorption；After stopping stirring, it is heavy to be squeezed into mud with pump
Separator drops, and through standing sedimentation, the oil reservoir for being desorbed out floats on silt particle water surface upper layer；It is struck off using Oil scraper on bubbling through the water column
Oil reservoir；The mud that oil slick will be struck off using jet pump, squeezes into gas floatation separation device, and the micro-bubble in silt particle is quick
Air pocket is accumulated, water layer surface is discharged into, the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface and removed by oil-scraping device；Using
Oil scraper strikes off the oil reservoir floated on the water surface through jet air float；Flocculant is added and carries out flocculation reaction；It is discharged and is filled using molten gas
Release microbubble is set, the suspended matter lighter than water and oil pollutant are adhered to band on bubble and is formed and is contained on liquid level to liquid level
Oil float slag, strikes off through Oil scraper, realizes water-oil separating.
The utility model also protects a kind of device of mobile quickly elution oil-polluted soils, the elution oil pollution soil
The device of earth include: pretreatment unit (1), oxidation desorption apparatus (2), settling separation device (3), the first dregs of fat collecting vessel (4),
Gas floatation separation device (5) and the second dregs of fat collecting vessel (6)；Pass through the first slush pump on the left of the oxidation desorption apparatus (2)
(7) it is connected with pretreatment unit (1), right side is connected by the second slush pump (8) with settling separation device (3)；
Pretreatment unit (1) includes elevating hopper (10), rotary screen (11), homogeneous tank (12) and waste collection drum (13),
Rotary screen (11) are installed in the upper end of matter tank 12, and the import of rotary screen connects elevating hopper (10), and homogeneous tank is connected with rotary screen, carefully
Material is fallen into homogeneous tank (12), and the outlet of homogeneous tank connects the first slush pump (7), and rotary screen connects waste collection drum (13), will
Waste removes；
Settling separation device (3) is connected by the first dregs of fat discharge outlet (15) with the first dregs of fat collecting vessel (4), sedimentation separation
Device (3) and the first dregs of fat collecting vessel (4) pass through sedimentation separation silt particle discharge outlet (16), collecting vessel silt particle discharge outlet respectively
(17) it is connected through jet pump (9) and pipe-line mixer (18) with gas floatation separation device (5)；Gas floatation separation device (5) passes through second
Dregs of fat discharge outlet (23) is connected with the second dregs of fat collecting vessel (6)；
The oxidation desorption apparatus (2) is equipped with deceleration blender (14), and is furnished with the first chemicals dosing plant (I) and second simultaneously
Chemicals dosing plant (II)；Third chemicals dosing plant (III) and the 4th chemicals dosing plant are installed on the feed pipe of gas floatation separation device (5)
(Ⅳ)；Settling separation device (3) and gas floatation separation device (5) install the first Oil scraper that can be moved along guide rail respectively above
(24), the second Oil scraper (25)；Gas floatation separation device (5) is equipped with pressure air-dissolving tank (19), air compressor (20), booster pump
(21) and release (22)；The import connection pressure air-dissolving tank and air compressor (20) of booster pump 21, the outlet of booster pump connect
Release is connect, the gas that pressure air-dissolving tank (19) and air compressor (20) generate is passed through into release using booster pump (21)
(22) it is discharged into gas floatation separation device to discharge microbubble；Pressure air-dissolving tank (19), air compressor (20), booster pump
(21) and release (22) constitutes molten gas release device；
Oxidation desorption is respectively set in oxidation desorption apparatus (2), settling separation device (3) and gas floatation separation device (5) bottom
Mud discharging mouth (26), sedimentation separation mud discharging mouth (27), dissolved air flotation mud discharging mouth (28)；First dregs of fat collecting vessel (4) and second dregs of fat
The first oil discharge outlet (29), the second oil discharge outlet (30) is respectively set in collecting vessel (6).
The device of the utility model elution oil-polluted soils is installed in container, or is mounted on moving body,
It realizes skid, forms the outfit of mobile quickly elution oil-polluted soils.The utility model technique is without heating, no
High-power large volume boiler is needed, the addition of oxidating chemicals can provide possibility, package unit body from heat production for quickly desorption
Product is small, and skid may be implemented.
Embodiment 1
The present embodiment is by 0.6m3Oil-polluted soils (soil moisture content 60%, oil content 16%) are added in elevating hopper,
Enter homogeneous tank after rotary screen removes impurity, while 3.4m is added in homogeneous tank3Water, lasting stirring keep its modulation equal
It is even.Modulated mud will be sieved with the first slush pump 7 to squeeze into oxidation desorption apparatus, sequentially adds the citric acid of 0.6mol/L
The ferrous sulfate solution of the hydrochloric acid 90L and 0.3mol/L of the sodium hydroxide solution 9L, 1.2mol/L of solution 9L, 0.6mol/L
18L opens blender and is mixed evenly, and the hydrogen peroxide that 54L mass concentration is 28% is finally slowly added in mud, continues
Stirring reacts it sufficiently, and wherein in-situ oxidation and pneumatically supported time are that 2h is after reaction beaten mud with the second slush pump
Enter settling separation device, after standing 30min, struck off oil slick into slurry collecting bucket using oil-scraping device, is completed primary
Water-oil separating.The mud after surface degreasing in settling separation device and dregs of fat collecting vessel is squeezed into air bearing by pipeline with jet pump
In separator, by the micro-bubble quick collecting in silt particle at air pocket, it is discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion
Oil film is formed in the water surface, is struck off oil film into slurry collecting bucket using oil-scraping device, completes secondary water-oil separating.Reaction terminates
Afterwards, the mud after secondary water-oil separating is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride
200g, flocculation aid polyacrylamide 40g carry out flocculation reaction.Pressure air-dissolving tank and air compressor are generated using booster pump
Gas be discharged into gas floatation separation device by release to discharging microbubble, by the suspended matter lighter than water and oil pollutant
Band on bubble is adhered to form oil-containing dross on liquid level to liquid level, strike off through Oil scraper to slurry collecting bucket, complete three-level oil
Water separation.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
88.7%, oil content 1.80%.
Embodiment 2
By 0.6m3Oil-polluted soils (soil moisture content 60%, oil content 16%) are added in elevating hopper, by roller
It weeds out and enters homogeneous tank after removing impurity, while 3.4m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use mud
Pump will sieve modulated mud and squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 6L, 0.6mol/ of 0.6mol/L
It is mixed to open blender by the ferrous sulfate solution 12L of the hydrochloric acid 60L and 0.6mol/L of the sodium hydroxide solution 6L, 1.2mol/L of L
Conjunction stirs evenly, and the hydrogen peroxide that 54L mass concentration is 28% is finally slowly added in mud, and lasting stirring keeps it sufficiently anti-
It answers, wherein in-situ oxidation and pneumatically supported time are that mud is squeezed into settling separation device with slush pump after reaction by 2h, quiet
After setting 30min, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.Use jet pump
Mud after surface degreasing in settling separation device and dregs of fat collecting vessel is squeezed into gas floatation separation device by pipeline, by silt particle
In micro-bubble quick collecting at air pocket, be discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface, adopts
Oil film is struck off into slurry collecting bucket with oil-scraping device, completes secondary water-oil separating.After reaction, by secondary water-oil separating
Mud afterwards is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 150g, flocculation aid polypropylene
Amide 40g carries out flocculation reaction.The gas that pressure air-dissolving tank and air compressor generate is arranged by release using booster pump
Enter in gas floatation separation device to discharging microbubble, the suspended matter lighter than water and oil pollutant are adhered on bubble band to liquid
Face forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, completes three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
88.1%, oil content 1.91%.
Embodiment 3
By 0.6m3Oil-polluted soils (soil moisture content 50%, oil content 15%) are added in elevating hopper, by roller
It weeds out and enters homogeneous tank after removing impurity, while 3.4m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use mud
Pump will sieve modulated mud and squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 9L, 0.6mol/ of 0.6mol/L
It is mixed to open blender by the ferrous sulfate solution 18L of the hydrochloric acid 90L and 0.6mol/L of the sodium hydroxide solution 9L, 1.2mol/L of L
Conjunction stirs evenly, and the hydrogen peroxide that 90L mass concentration is 14% is finally slowly added in mud, and lasting stirring keeps it sufficiently anti-
It answers, wherein in-situ oxidation and pneumatically supported time are that mud is squeezed into settling separation device with slush pump after reaction by 2h, quiet
After setting 30min, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.Use jet pump
Mud after surface degreasing in settling separation device and dregs of fat collecting vessel is squeezed into gas floatation separation device by pipeline, by silt particle
In micro-bubble quick collecting at air pocket, be discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface, adopts
Oil film is struck off into slurry collecting bucket with oil-scraping device, completes secondary water-oil separating.After reaction, by secondary water-oil separating
Mud afterwards is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 170g, flocculation aid polypropylene
Amide 50g carries out flocculation reaction.The gas that pressure air-dissolving tank and air compressor generate is arranged by release using booster pump
Enter in gas floatation separation device to discharging microbubble, the suspended matter lighter than water and oil pollutant are adhered on bubble band to liquid
Face forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, completes three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
87.5%, oil content 1.88%.
Embodiment 4
By 0.6m3Oil-polluted soils (soil moisture content 60%, oil content 15%) are added in elevating hopper, by roller
It weeds out and enters homogeneous tank after removing impurity, while 3.4m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use mud
Pump will sieve modulated mud and squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 9L, 0.6mol/ of 0.6mol/L
It is mixed to open blender by the ferrous sulfate solution 18L of the hydrochloric acid 90L and 0.6mol/L of the sodium hydroxide solution 9L, 1.2mol/L of L
Conjunction stirs evenly, and the hydrogen peroxide that 54L mass concentration is 28% is finally slowly added in mud, and lasting stirring keeps it sufficiently anti-
It answers, wherein in-situ oxidation and pneumatically supported time are that mud is squeezed into settling separation device with slush pump after reaction by 2.5h,
After standing 35min, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.Use jet stream
Pump squeezes into the mud after surface degreasing in settling separation device and dregs of fat collecting vessel in gas floatation separation device by pipeline, by mud
Micro-bubble quick collecting in sand is discharged into water layer surface at air pocket, and the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface,
Oil film is struck off into slurry collecting bucket using oil-scraping device, completes secondary water-oil separating.After reaction, by secondary grease point
Mud from after is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 250g, flocculation aid poly- third
Acrylamide 50g carries out flocculation reaction.The gas that pressure air-dissolving tank and air compressor generate is passed through into release using booster pump
It is discharged into gas floatation separation device to discharging microbubble, the suspended matter lighter than water and oil pollutant is adhered on bubble band extremely
Liquid level forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, completes three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
89.8%, oil content 1.53%.
Embodiment 5
By 1m3Oil-polluted soils (soil moisture content 65%, oil content 17%) are added in elevating hopper, by rotary screen
Enter homogeneous tank after removing impurity, while 3m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.It will with slush pump
It sieves modulated mud to squeeze into oxidation desorption apparatus, sequentially adds the citric acid solution 11L of 0.6mol/L, 0.6mol/L's
The ferrous sulfate solution 22L of the hydrochloric acid 110L and 0.6mol/L of sodium hydroxide solution 11L, 1.2mol/L open blender mixing
It stirring evenly, the hydrogen peroxide that 66L mass concentration is 28% is finally slowly added in mud, lasting stirring reacts it sufficiently,
Wherein in-situ oxidation and pneumatically supported time are that mud is squeezed into settling separation device with slush pump after reaction by 2h, are stood
After 30min, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.It will with jet pump
Mud in settling separation device and dregs of fat collecting vessel after surface degreasing is squeezed into gas floatation separation device by pipeline, will be in silt particle
Micro-bubble quick collecting at air pocket, be discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface, uses
Oil-scraping device strikes off oil film into slurry collecting bucket, completes secondary water-oil separating.It after reaction, will be after secondary water-oil separating
Mud squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 210g, flocculation aid polyacrylamide
Amine 45g carries out flocculation reaction.The gas that pressure air-dissolving tank is generated with air compressor is discharged by release using booster pump
To discharging microbubble in gas floatation separation device, the suspended matter lighter than water and oil pollutant are adhered on bubble band to liquid
Face forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, completes three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
88.5%, oil content 1.96%.
Embodiment 6
By 0.6m3Oil-polluted soils (soil moisture content 50%, oil content 8%) are added in elevating hopper, by roller
It weeds out and enters homogeneous tank after removing impurity, while 3.4m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use mud
Pump will sieve modulated mud and squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 6L, 0.6mol/ of 0.6mol/L
It is mixed to open blender by the ferrous sulfate solution 12L of the hydrochloric acid 60L and 0.6mol/L of the sodium hydroxide solution 6L, 1.2mol/L of L
Conjunction stirs evenly, and the hydrogen peroxide that 36L mass concentration is 28% is finally slowly added in mud, and lasting stirring keeps it sufficiently anti-
It answers, wherein in-situ oxidation and pneumatically supported time are that mud is squeezed into settling separation device with slush pump after reaction by 2h, quiet
After setting 30min, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.Use jet pump
Mud after surface degreasing in settling separation device and dregs of fat collecting vessel is squeezed into gas floatation separation device by pipeline, by silt particle
In micro-bubble quick collecting at air pocket, be discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface, adopts
Oil film is struck off into slurry collecting bucket with oil-scraping device, completes secondary water-oil separating.After reaction, by secondary water-oil separating
Mud afterwards is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 150g, flocculation aid polypropylene
Amide 30g carries out flocculation reaction.The gas that pressure air-dissolving tank and air compressor generate is arranged by release using booster pump
Enter in gas floatation separation device to discharging microbubble, the suspended matter lighter than water and oil pollutant are adhered on bubble band to liquid
Face forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, completes three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
83.4%, oil content 1.33%.
Embodiment 7
By 0.8m3Oil-polluted soils (soil moisture content 70%, oil content 12%) are added in elevating hopper, by roller
It weeds out and enters homogeneous tank after removing impurity, while 3.4m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use mud
Pump will sieve modulated mud and squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 9L, 0.6mol/ of 0.6mol/L
It is mixed to open blender by the ferrous sulfate solution 20L of the hydrochloric acid 90L and 0.5mol/L of the sodium hydroxide solution 9L, 1.2mol/L of L
Conjunction stirs evenly, and the hydrogen peroxide that 100L mass concentration is 14% is finally slowly added in mud, and lasting stirring keeps it sufficiently anti-
It answers, wherein in-situ oxidation and pneumatically supported time are that mud is squeezed into settling separation device with slush pump after reaction by 2h, quiet
After setting 30min, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.Use jet pump
Mud after surface degreasing in settling separation device and dregs of fat collecting vessel is squeezed into gas floatation separation device by pipeline, by silt particle
In micro-bubble quick collecting at air pocket, be discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion forms oil film in the water surface, adopts
Oil film is struck off into slurry collecting bucket with oil-scraping device, completes secondary water-oil separating.After reaction, by secondary water-oil separating
Mud afterwards is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 300g, flocculation aid polypropylene
Amide 70g carries out flocculation reaction.The gas that pressure air-dissolving tank and air compressor generate is arranged by release using booster pump
Enter in gas floatation separation device to discharging microbubble, the suspended matter lighter than water and oil pollutant are adhered on bubble band to liquid
Face forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, completes three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
85.6%, oil content 1.73%.
Embodiment 8
By 1m3Oil-polluted soils (soil moisture content 60%, oil content 1.9%) are added in elevating hopper, by roller
It weeds out and enters homogeneous tank after removing impurity, while 3m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use slush pump
Modulated mud will be sieved to squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 3L, 0.6mol/L of 0.6mol/L
Sodium hydroxide solution 3L, 1.2mol/L hydrochloric acid 30L and 0.6mol/L ferrous sulfate solution 6L, open blender mixing stirs
It mixes and is uniformly finally slowly added to the hydrogen peroxide that 48L mass concentration is 6% in mud, lasting stirring reacts it sufficiently, wherein
In-situ oxidation and pneumatically supported time are 2h, after reaction, mud are squeezed into settling separation device with slush pump, stands 30min
Afterwards, oil slick is struck off into slurry collecting bucket using oil-scraping device, completes primary water-oil separating.Sedimentation is divided with jet pump
It is squeezed into gas floatation separation device from the mud after surface degreasing in device and dregs of fat collecting vessel by pipeline, it will be small in silt particle
Bubble quick collecting is discharged into water layer surface at air pocket, and the petroleum hydrocarbon of bubble adhesion is formed oil film in the water surface, filled using frizing
It sets and strikes off oil film into slurry collecting bucket, complete secondary water-oil separating.After reaction, by the mud after secondary water-oil separating
It is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 100g, flocculation aid polyacrylamide 35g,
Carry out flocculation reaction.The gas that pressure air-dissolving tank and air compressor generate is discharged into air bearing point by release using booster pump
Band is to liquid level to discharging microbubble, the suspended matter lighter than water and oil pollutant are adhered on bubble in device, in liquid
Oil-containing dross is formed on face, is struck off through Oil scraper to slurry collecting bucket, is completed three-level water-oil separating.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
75.8%, oil content 0.46%.
Embodiment 9
By 1.5m3Oil-polluted soils (soil moisture content 65%, oil content 1.7%) are added in elevating hopper, by rolling
Shaft screen enters homogeneous tank after removing impurity, while 5.5m is added in homogeneous tank3Water, lasting stirring keep its modulation uniform.Use mud
Stock pump will sieve modulated mud and squeeze into oxidation desorption apparatus, sequentially add the citric acid solution 2.5L of 0.6mol/L,
The ferrous sulfate solution 5L of the hydrochloric acid 25L and 0.6mol/L of the sodium hydroxide solution 2.5L, 1.2mol/L of 0.6mol/L are opened
Blender is mixed evenly, and the hydrogen peroxide that 65L mass concentration is 6% is finally slowly added in mud, and lasting stirring makes it
Sufficiently reaction, wherein in-situ oxidation and pneumatically supported time are 2h, after reaction, mud are squeezed into sedimentation separation dress with slush pump
It sets, after standing 30min, is struck off oil slick into slurry collecting bucket using oil-scraping device, complete primary water-oil separating.With penetrating
Stream pump squeezes into the mud after surface degreasing in settling separation device and dregs of fat collecting vessel in gas floatation separation device by pipeline, will
Micro-bubble quick collecting in silt particle is discharged into water layer surface, the petroleum hydrocarbon of bubble adhesion forms oil in the water surface at air pocket
Film is struck off oil film into slurry collecting bucket using oil-scraping device, completes secondary water-oil separating.After reaction, by secondary oil
Mud after water separation is squeezed into gas floatation separation device again with slush pump, dosing coagulant aluminium polychloride 125g, flocculation aid
Polyacrylamide 25g carries out flocculation reaction.Pressure air-dissolving tank is passed through with the gas that air compressor generates using booster pump and is released
It puts device to be discharged into gas floatation separation device to discharge microbubble, the suspended matter lighter than water and oil pollutant is adhered on bubble
Band forms oil-containing dross on liquid level, strikes off through Oil scraper to slurry collecting bucket, complete three-level water-oil separating to liquid level.
Above-mentioned oil-polluted soils reach the removal rate of petroleum hydrocarbon in soil after the utility model process
73.5%, oil content 0.45%.
The utility model does not address place and is suitable for the prior art, and related appliance arrangement can be commercially available.
Claims (5)
1. a kind of device of mobile quickly elution oil-polluted soils, which is characterized in that the dress of the elution oil-polluted soils
Set includes: pretreatment unit (1), oxidation desorption apparatus (2), settling separation device (3), the first dregs of fat collecting vessel (4), air bearing point
From device (5) and the second dregs of fat collecting vessel (6)；By the first slush pump (7) and pre- on the left of the oxidation desorption apparatus (2)
Processing unit (1) is connected, and right side is connected by the second slush pump (8) with settling separation device (3)；
Pretreatment unit (1) includes elevating hopper (10), rotary screen (11), homogeneous tank (12) and waste collection drum (13)；
Settling separation device (3) is connected by the first dregs of fat discharge outlet (15) with the first dregs of fat collecting vessel (4), settling separation device
(3) and the first dregs of fat collecting vessel (4) is respectively by sedimentation separation silt particle discharge outlet (16), collecting vessel silt particle discharge outlet (17) through penetrating
Stream pump (9) and pipe-line mixer (18) are connected with gas floatation separation device (5)；Gas floatation separation device (5) is discharged by second dregs of fat
Mouth (23) is connected with the second dregs of fat collecting vessel (6)；
The oxidation desorption apparatus (2) is equipped with deceleration blender (14), and is furnished with the first chemicals dosing plant (I) and the second dosing simultaneously
Device (II)；Third chemicals dosing plant (III) and the 4th chemicals dosing plant (IV) are installed on the feed pipe of gas floatation separation device (5)；It is heavy
Drop separator (3) and gas floatation separation device (5) are installed the first Oil scraper (24) that can be moved along guide rail respectively above, second are scraped
Oil machine (25)；Gas floatation separation device (5) is equipped with molten gas release device；
Oxidation desorption spoil disposal is respectively set in oxidation desorption apparatus (2), settling separation device (3) and gas floatation separation device (5) bottom
Mouth (26), sedimentation separation mud discharging mouth (27), dissolved air flotation mud discharging mouth (28)；First dregs of fat collecting vessel (4) and second dregs of fat are collected
The first oil discharge outlet (29), the second oil discharge outlet (30) is respectively set in bucket (6).
2. the device of mobile quickly elution oil-polluted soils according to claim 1, it is characterised in that the elution stone
The device of soil contaminated by crude oil is able to achieve skid.
3. the device of mobile quickly elution oil-polluted soils according to claim 1, which is characterized in that the jet stream
The lift of pump is 10-100m.
4. the device of mobile quickly elution oil-polluted soils according to claim 1, which is characterized in that molten gas release
The dissolved-air pressure of device is 0.1-0.4Mpa.
5. the device of mobile quickly elution oil-polluted soils according to claim 1, which is characterized in that the molten gas
Release device includes pressure air-dissolving tank (19), air compressor (20), booster pump (21) and release (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821716961 | 2018-10-23 | ||
| CN2018217169612 | 2018-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365512A (en) * | 2018-10-23 | 2019-02-22 | 河北工业大学 | A kind of technique and device of mobile quickly elution oil-polluted soils |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365512A (en) * | 2018-10-23 | 2019-02-22 | 河北工业大学 | A kind of technique and device of mobile quickly elution oil-polluted soils |
| CN109365512B (en) * | 2018-10-23 | 2023-06-23 | 河北工业大学 | Method for mobile rapid elution of petroleum-polluted soil |
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