CN107838181A - A kind of biology in situ strengthens the method that gas extracts remedying oil-polluted place - Google Patents
A kind of biology in situ strengthens the method that gas extracts remedying oil-polluted place Download PDFInfo
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- CN107838181A CN107838181A CN201710819814.1A CN201710819814A CN107838181A CN 107838181 A CN107838181 A CN 107838181A CN 201710819814 A CN201710819814 A CN 201710819814A CN 107838181 A CN107838181 A CN 107838181A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Environmental & Geological Engineering (AREA)
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Abstract
The present invention provides a kind of biology in situ and strengthens the method that gas extracts remedying oil-polluted place, belongs to environmental pollution soil remediation field.The present invention comprises the following steps：(1) contaminated site is reconnoitred；(2) recovery scenario is formulated；(3) it is laid out contaminated site；(4) contaminated site is repaired.Present invention process is simple, realizes the combination of biological reinforced and gas extracting, can carry out processing disposal to pollutant while remedying oil-polluted place, meets Practical Project demand and workable；The present invention does not destroy contaminated site geologic structure, to contaminated site and the equal non-secondary pollution of underground water, has the advantages that ambient adaptability is strong, rehabilitation cost is low, regulation effect is good, is with a wide range of applications.
Description
Technical field
The invention belongs to environmental pollution soil remediation field, and in particular to a kind of biology in situ strengthens gas extracting and repairs stone
The method in oily pollution place.
Background technology
As the fast development and sustainable growth of social economy, countries in the world are growing day by day to the demand of the energy.Oil is made
For one of main energy of the mankind, its global total output increases to 43.62 hundred million in 2015 by 39.38 hundred million tons in 2005
Ton, every year because the discharge of oil exploitation, transport, storage, accidental leakage and oily waste water, sewage irrigation etc. cause to there are about 1000
The soil pollution caused by oil exploitation, processing and sales process of ten thousand tons of petroleum hydrocarbon contaminated environment, especially petroleum chemical enterprise is most
To be serious.Oil-polluted soils can cause soil texture and property change, vegetation deterioration, microbiologic population's change, soil enzymatic activities
Property reduce, water and soil pollution phenomena such as, destroy the use function in soil, serious threat health and ecological environment.
Hydrocarbon in Soil contaminant component is complicated, mainly have C15~C36 alkane, alkene, benzene homologues, polycyclic aromatic hydrocarbon,
Priority pollutants up to more than 30 are planted as defined in lipid etc., the wherein U.S..To prevent soil pollution and preserving the ecological environment, I
Early in nineteen ninety-five, issue implements GB 15618-1995 for state《Standard of soil environment quality》, and in 1998 by waste mineral oil with
Oil sludge of waste containing mineral oil etc. is included in " National Hazard waste register ".With《Law on Environmental Protection》、《Solid waste substance environment is dirty
Contaminate anti-therapy》、《Soil Pollution Control action plan》、《" 13 " ecological environmental protection is planned》Deng issuing for environmental regulation system
Cloth and environmental law enforcement it is increasingly strict, carry out disposal of oily sludge disposal and greasy filth contaminated soil remediation be imperative.
For oil-polluted soils, a series of ripe technologies and thinking are formd both at home and abroad, are broadly divided into in-situ immobilization
Technology and showering technology.Common based technique for in-situ remediation has soil vapor extraction, bio- ventilation, in situ chemical oxidation, double
To extracting etc.；Showering technology first digs out contaminated soil, then carries out subsequent treatment, simple and easy, but easily causes secondary
Pollution, quantities is larger and rehabilitation expense is higher, applies in general to small-scale or heavily contaminated soil remediation.Take respectively both at home and abroad
Different administering methods and recovery technique, but it is difficult to the innoxious and recycling of oil-polluted soils.For me
State's oil-polluted soils present situation and the bottleneck problem of oil-polluted soils recovery technique application, exploitation purification efficiency is high, environment danger
The oil pollution site remediation method small, that control expense is low of evil turns into the task of top priority.
The content of the invention
It is strong that the problem of the present invention seeks to exist for existing oil pollution site remediation technology, provides a kind of biology in situ
Change the method that gas extracts remedying oil-polluted place.
A kind of biology in situ strengthens the method that gas extracts remedying oil-polluted place, comprises the following steps：
(1) contaminated site is reconnoitred：Site inspection is carried out to oil pollution place using physics, chemistry or biological method, really
Determine contaminated site soil property, Polluted area distribution overview, pollutant main component and its concentration；
(2) recovery scenario is formulated：Oil pollution site remediation scheme is formulated according to the exploration result of step (1), determines Pollution Field
The air injection well and extraction well plane figure on ground, from the optimal microorganism of contaminant degradation and back loading is activated in receiving
Nano material post is made on rice material；
(3) it is laid out contaminated site：According to the air injection well of step (2) and extraction well plane figure drilling well, and will be loaded with
The nano material post of microorganism is placed in extraction well, connection air injection well, extraction well and biological reinforced gas extraction device；
(4) contaminated site is repaired：Biological reinforced gas extraction device is opened, vavuum pump pumping makes extraction well produce negative pressure, simultaneously
Air blower injects fresh air by air injection well to contaminated site, and air is desorbed and carried secretly in soil when flowing through contaminated site
Organic pollution, pollutant passes through respectively after the microbial degradation of nano material post to gas-liquid separation device, waste gas and waste liquid
Qualified discharge after emission-control equipment and liquid waste treating apparatus processing.
Preferably, oil pollution place is the stronger oil-polluted soils reparation of volatility, and require that the soil texture is equal
First, good penetrability, porosity are big, moisture content is small and level of ground water is relatively low, moisture content<10%, air transmitted rate ＞ 10-4Cm/s,
The m of groundwater depth ＞ 3.
Preferably, the pollutant in oil pollution place is volatility or semi-volatile organic matter, and pollutant is in water
The mg/L of solubility ＜ 100.
Preferably, described microorganism includes volatile organic matter degrading microorganism and semi-volatile organic matter degraded is micro-
Biology, and have the advantages that reproduction speed is fast, degradation efficiency is high, non-secondary pollution.
Preferably, described nano material is micro- to volatile organic matter degrading microorganism and semi-volatile organic matter degraded
Biological non-toxicity, and absorption to volatility and semi-volatile organic matter and degradation efficiency are good.
Preferably, described biological reinforced gas extraction device includes air injection well, extraction well, air blower, vacuum
Pump, gas-liquid separation device, emission-control equipment and liquid waste treating apparatus.
Volatilized preferably, described biological reinforced gas extraction device can set up flowmeter, pressure gauge, volatility and half
Property organic matter on-line monitoring probe.
Preferably, there is support the top and bottom of nano material post when described nano material post is placed in extraction well
Plate, for fixing nano material post.
Preferably, described emission-control equipment end is provided with charcoal absorption system, the activated carbon in adsorption system
To volatility and semi-volatile organic matter by preferable adsorption effect.
Preferably, the charcoal absorption system end is provided with gas pollutant alarm, gas pollutant concentration surpasses
Automatic alarm when crossing discharge standard.
Preferably, the air injection well and extraction well in described oil pollution place should laterally, longitudinal direction or interlaced arrangement,
Distance between air injection well and extraction well is 10 ~ 50 m；It is further preferred that the distance between air injection well and extraction well is
30 m。
Preferably, the air injection well and extraction well well depth in described oil pollution place are liftoff not less than pollutant
Depth.
Preferably, the extraction well diameter range in described oil pollution place is 1.0 ~ 3.0 m；It is further preferred that
Extraction well diameter range is 2.0 m.
The beneficial effects of the invention are as follows：
The method technique that a kind of biology in situ of the present invention strengthens the remedying oil-polluted place of gas extracting is simple, realizes
The combination of biological reinforced and gas extracting, can carry out processing disposal while remedying oil-polluted place to pollutant,
Meet Practical Project demand and workable；The present invention does not destroy contaminated site geologic structure, to contaminated site and underground water
Equal non-secondary pollution, have the advantages that ambient adaptability is strong, rehabilitation cost is low, regulation effect is good, be with a wide range of applications.
Described nano material is non-toxic to volatile organic matter degrading microorganism and semi-volatile organic matter degrading microorganism, and to waving
Hair property and the absorption of semi-volatile organic matter and degradation efficiency are good.
Brief description of the drawings
Fig. 1 is workflow diagram of the present invention.
Fig. 2 is the operating diagram of biological reinforced gas extraction device.
Fig. 3 is the floor plan of oil pollution place air injection well and extraction well.
In figure：Oil pollution place 1, air blower 2, air exhauster 3, gas-liquid separation device 4, emission-control equipment 5, at waste liquid
Manage device 6, air injection well 7, extraction well 8 and nano material post 9.
Embodiment
Specific embodiment is only that the part of the present invention is embodied, it is impossible to covers the whole of the present invention, is set not departing from the present invention
On the premise of meter, any one skilled in the art in the technical scope of the present invention, the change that can readily occur in,
Improve or replace, should all be covered within the protection domain of claims of the present invention determination.
Embodiment 1：
A kind of biology in situ of the present invention strengthens the method that gas extracts remedying oil-polluted place, is based on biological reinforced
The oil pollution place in-situ remediation method being combined with gas extracting, is cooperateed with using microbial degradation and activated carbon physical absorption
Volatility and semi-volatile organic matter are removed, has the advantages that ambient adaptability is strong, rehabilitation cost is low, regulation effect is good, has
It is widely applied prospect.
A kind of above-mentioned biology in situ strengthens the method that gas extracts remedying oil-polluted place, and it comprises the following steps：
(1) contaminated site is reconnoitred：Site inspection is carried out using high density resistor method and oil pollution place, determines Polluted area
Distribution overview and pollution level and the potential migratory direction of pollutant；Utilize chemical analysis method contaminated site soil property, dirt
Contaminate thing main component and pollutant concentration；
(2) recovery scenario is formulated：Oil pollution site remediation scheme is formulated according to the exploration result of step (1), determines Pollution Field
For air injection well 7 and the plane figure of extraction well 8 on ground as shown in figure 3, wherein air injection well 7 supplies 12, extraction well 8 supplies 8
It is individual；From the optimal microorganism of contaminant degradation and back loading is activated in a diameter of 1.0 m is made in nano material, is highly
4 m nano material post 9；
(3) it is laid out contaminated site：According to the air injection well 7 of step (2) and the plane figure drilling well of extraction well 8, air injection
The diameter of well 7 and extraction well 8 is respectively 3.0 m and 1.0 m, and depth is 5.0 m, between air injection well 7 and extraction well 8 away from
From for 10 m；The nano material post 9 for being loaded with microorganism is placed in extraction well 8, connection air injection well 7, extraction well 8 and biology
Strengthen gas extraction device；
(4) contaminated site is repaired：Biological reinforced gas extraction device is opened, the pumping of vavuum pump 3 makes extraction well 8 produce negative pressure, together
When air blower 2 fresh air is injected to contaminated site 1 by air injection well 7, air desorbs and carries secretly when flowing through contaminated site 1
Organic pollution in soil, pollutant after the microbial degradation of nano material post 9 to gas-liquid separation device 4, waste gas and useless
The liquid qualified discharge after emission-control equipment 5 and liquid waste treating apparatus 6 are handled respectively.
Embodiment 2：
Strengthen gas extraction technique using biology in situ to be repaired for Xinjiang oil pollution place.According to Field Research and
Analysis, for the contaminated site based on sand, permeability is strong, moisture content 8%.Choosing 10 sampled points, (each sampled point difference is liftoff
0 m, 1 m and 3 m samplings) pollutant component and concentration are analyzed respectively, the results showed that, the place major pollutants have for volatility
Machine thing benzene, the initial concentration scope of sampled point benzene is 1.27 ~ 18.59 mg/kg, and mean concentration is 8.71 mg/kg.According to surveying
Survey result and formulate oil pollution site remediation scheme, determine 4 air injection wells and 1 extraction well, wherein air injection well is
Square layout (length of side is 8.0 m), extraction well is located at square center, and air injection well and extraction well are a diameter of 1.0
M, highly it is 3.5 m；From the microorganism to benzene with preferable degradation effect, and back loading is activated in being made in nano material
It is placed in into a diameter of 1.0 m, highly for 2.0 m nano material posts in extraction well, connection air injection well, extraction well and biology are strong
Change gas extraction device；Biological reinforced gas extraction device is opened, setting suction flow is 60 m3After/h, the d of plant running 20
Benzene concentration at the random detection contaminated site is liftoff 1 m in 5 soil, it is 0.17 ~ 2.39 as a result to show benzene concentration scope
Mg/kg, the oil pollution place benzene content after processing significantly reduce.
Claims (8)
1. a kind of biology in situ strengthens the method that gas extracts remedying oil-polluted place, it is characterised in that comprises the following steps：
(1) contaminated site is reconnoitred：Site inspection is carried out to oil pollution place using physics, chemistry or biological method, really
Determine contaminated site soil property, Polluted area distribution overview, pollutant main component and its concentration；
(2) recovery scenario is formulated：Oil pollution site remediation scheme is formulated according to the exploration result of step (1), determines Pollution Field
The air injection well and extraction well plane figure on ground, from the optimal microorganism of contaminant degradation and back loading is activated in receiving
Nano material post is made on rice material；
(3) it is laid out contaminated site：According to the air injection well of step (2) and extraction well plane figure drilling well, and will be loaded with
The nano material post of microorganism is placed in extraction well, connection air injection well, extraction well and biological reinforced gas extraction device；
(4) contaminated site is repaired：Biological reinforced gas extraction device is opened, vavuum pump pumping makes extraction well produce negative pressure, simultaneously
Air blower injects fresh air by air injection well to contaminated site, and air is desorbed and carried secretly in soil when flowing through contaminated site
Organic pollution, pollutant passes through respectively after the microbial degradation of nano material post to gas-liquid separation device, waste gas and waste liquid
Qualified discharge after emission-control equipment and liquid waste treating apparatus processing.
2. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
Sign is oil pollution place for the stronger oil-polluted soils reparation of volatility, and require the homogeneous soil texture, good penetrability,
Porosity is big, moisture content is small and level of ground water is relatively low.
3. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
Sign is that the pollutant in oil pollution place is volatility or semi-volatile organic matter, and solubility ＜ of the pollutant in water
100 mg/L。
4. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
Sign is that described microorganism includes volatile organic matter degrading microorganism and semi-volatile organic matter degrading microorganism.
5. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
It is online that sign is that described biological reinforced gas extraction device sets up flowmeter, pressure gauge, volatility and semi-volatile organic matter
Monitoring probe.
6. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
Sign is that there is supporting plate the top and bottom of nano material post when described nano material post is placed in extraction well, is received for fixation
Rice column of material.
7. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
Sign is that described emission-control equipment end is provided with charcoal absorption system, and the activated carbon in adsorption system is to volatility and partly
Volatile organic matter is by preferable adsorption effect.
8. a kind of biology in situ according to claim 1 strengthens the method that gas extracts remedying oil-polluted place, it is special
Sign is that the charcoal absorption system end is provided with gas pollutant alarm, when gas pollutant concentration exceedes discharge standard
Automatic alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710819814.1A CN107838181A (en) | 2017-09-13 | 2017-09-13 | A kind of biology in situ strengthens the method that gas extracts remedying oil-polluted place |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311535A (en) * | 2017-12-18 | 2018-07-24 | 北京市环境保护科学研究院 | The system and administering method of electrical heating renovation of organic pollution soil in situ |
| CN108580546A (en) * | 2018-06-22 | 2018-09-28 | 中节能大地环境修复有限公司 | A kind of prosthetic device and method of half in-situ treatment volatile organic matter contaminated site |
| CN111551389A (en) * | 2020-05-25 | 2020-08-18 | 暨南大学 | Method for evaluating bioavailability of soil organic pollutants and sampling device |
| CN112474785A (en) * | 2020-12-28 | 2021-03-12 | 苏州精英环保有限公司 | Method for repairing composite polluted site by combining chemical leaching and microorganisms |
| CN112588810A (en) * | 2020-12-25 | 2021-04-02 | 苏州精英环保有限公司 | In-situ heat-enhanced microbial remediation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311535A (en) * | 2017-12-18 | 2018-07-24 | 北京市环境保护科学研究院 | The system and administering method of electrical heating renovation of organic pollution soil in situ |
| CN108311535B (en) * | 2017-12-18 | 2021-10-01 | 北京市环境保护科学研究院 | System for repairing organic contaminated soil through in-situ electric heating and treatment method |
| CN108580546A (en) * | 2018-06-22 | 2018-09-28 | 中节能大地环境修复有限公司 | A kind of prosthetic device and method of half in-situ treatment volatile organic matter contaminated site |
| CN111551389A (en) * | 2020-05-25 | 2020-08-18 | 暨南大学 | Method for evaluating bioavailability of soil organic pollutants and sampling device |
| CN112588810A (en) * | 2020-12-25 | 2021-04-02 | 苏州精英环保有限公司 | In-situ heat-enhanced microbial remediation method |
| CN112474785A (en) * | 2020-12-28 | 2021-03-12 | 苏州精英环保有限公司 | Method for repairing composite polluted site by combining chemical leaching and microorganisms |
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