CN108246791A - A kind of petroleum hydrocarbon contaminated soil renovation technique - Google Patents
A kind of petroleum hydrocarbon contaminated soil renovation technique Download PDFInfo
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- CN108246791A CN108246791A CN201810205244.1A CN201810205244A CN108246791A CN 108246791 A CN108246791 A CN 108246791A CN 201810205244 A CN201810205244 A CN 201810205244A CN 108246791 A CN108246791 A CN 108246791A
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- contaminated soil
- reactive tank
- microbial inoculum
- petroleum hydrocarbon
- medicament
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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
- B09C1/06—Reclamation of contaminated soil thermally
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of petroleum hydrocarbon contaminated soil renovation technique, and step is as follows：Contaminated soil is crushed using crusher, sprays microbial inoculum and medicament on contaminated soil during crushing；Contaminated soil is transported in reactive tank using conveyor, continues spray microbial inoculum and medicament on contaminated soil during transport；During contaminated soil is filled into reactive tank, supplement spray microbial inoculum, water and medicament are continued into reactive tank according to the humidity of contaminated soil and hydrocarbon content, after contaminated soil fills reactive tank, 10~30 DEG C of air is passed through by the bottom of reactive tank, meet the needs of microorganism with the oxygen content ensured in reactive tank, the time for being passed through air is 10~30 days, and the macromolecule petroleum hydrocarbon in contaminated soil is degraded to low molecule petroleum hydrocarbon by microbial inoculum；60~80 DEG C of air is passed through into reactive tank, stripping is carried out to contaminated soil, air expels the low molecule petroleum hydrocarbon in contaminated soil.Renovation technique provided by the invention effectively shortens the biological prosthetic period.
Description
Technical field
The present invention relates to contaminated soil remediation technical field more particularly to a kind of petroleum hydrocarbon contaminated soil renovation techniques.
Background technology
Petroleum hydrocarbon is a kind of persistence organic pollutant, and imperfect combustion and the chemical industry generation of fossil fuel are given up
Liquid is the main path that petroleum hydrocarbon generates, and petroleum hydrocarbon can cause dirt to soil afterwards in the soil by the aggregation of atmospheric sedimentation effect
Dye, causes serious ecological risk.
The technology for repairing petroleum hydrocarbon contaminated soil at present mainly has peripheral doses, chemical remediation and biological prosthetic, and physics is repaiied
Multiple and chemical remediation rehabilitation cost is high and easily causes secondary pollution, and the biological prosthetic period is longer, generally 2-6 months,
Therefore there is an urgent need to develop a kind of restorative procedures for the petroleum hydrocarbon contaminated soil that can shorten repairing efficiency, reduce cost.
Invention content
In view of this, the present invention provides a kind of petroleum hydrocarbon contaminated soils that can effectively reduce repairing efficiency to repair work
Skill.
The present invention provides a kind of petroleum hydrocarbon contaminated soil renovation technique, includes the following steps：
S1 is crushed contaminated soil using crusher, sprays microbial inoculum and medicament on contaminated soil during crushing；
Contaminated soil using conveyor is transported in reactive tank, continued on contaminated soil during transport by S2
Spray microbial inoculum and medicament；
S3, during contaminated soil is filled into reactive tank, according to the humidity of contaminated soil and hydrocarbon content to reactive tank
Inside continue supplement spray microbial inoculum, water and medicament, after contaminated soil fills reactive tank, from the bottom of reactive tank from the bottom to top to reaction
10~30 DEG C of air is passed through in slot, the needs of microorganism are met with the oxygen content ensured in reactive tank, is passed through the time of air
It it is 10~30 days, the macromolecule petroleum hydrocarbon in contaminated soil is degraded to low molecule petroleum hydrocarbon by microbial inoculum；
S4 is passed through 60~80 DEG C of air into reactive tank from the bottom of reactive tank and carries out stripping to contaminated soil, 60~
80 DEG C of air expels the low molecule petroleum hydrocarbon in contaminated soil.
Further, the microbial inoculum is obtained according to the property culture of contaminated soil.
Further, in step S1, the addition of the microbial inoculum and medicament is respectively 50~100mL/L soil, the bacterium
The volume ratio of agent and medicament is 1:1.
Further, in step S2, the addition of the microbial inoculum and medicament is respectively 50~100mL/L soil, the bacterium
The volume ratio of agent and medicament is 1:1.
Further, the top of the reactive tank is equipped with gas collecting apparatus, and the gas collecting apparatus collects what is discharged in reactive tank
Exhaust gas.
Further, the bottom of the reactive tank is equipped with several evenly distributed air intake branches, these air intake branches
Air inlet connects inlet manifold, and the inlet manifold connects heating unit, and the heating devices heat is drawn into inlet manifold
Air, air is flowed into through air intake branch in reactive tank after being heated.
Further, temperature sensor, oxygen sensor, gas detecting instrument and soil moisture are placed in the reactive tank
Sensor, the outside of the reactive tank are equipped with display device, the temperature sensor, oxygen sensor, gas detecting instrument and soil
Earth humidity sensor is connect with display device, and the temperature sensor monitors the temperature in reactive tank in real time, and by reactive tank
Interior temperature data is transmitted to display device, and the oxygen sensor monitors the oxygen concentration in reactive tank in real time, and by oxygen
Concentration data is transmitted to display device, and the gas detecting instrument monitors the hydrocarbon content in the gas in reactive tank in real time, and by hydrocarbon
Content data is transmitted to display device, the humidity of the real-time monitoring pollution soil of soil humidity sensor, and by contaminated soil
Humidity data be transmitted to display device.
Further, the heating unit connection control device, hydrocarbon of the control device in gas in reactive tank
Content controls the heating temperature of heating unit.
The advantageous effect that technical solution provided by the invention is brought is：Petroleum hydrocarbon contaminated soil provided by the invention repairs work
Skill first by sprayed on contaminated soil microbial inoculum carry out it is biological prosthetic, be then heated to by being passed through 60~80 DEG C of air into
Row peripheral doses, effectively shorten the biological prosthetic period, and repairing efficiency is 15 days~45 days；Renovation technique drop provided by the invention
It solves efficient, at low cost；Renovation technique provided by the invention can preferably control microbial inoculum by adding microbial inoculum in reactive tank
Growing environment, and then ensure microbial inoculum activity.
Description of the drawings
Fig. 1 is a kind of flow diagram of petroleum hydrocarbon contaminated soil renovation technique of the present invention.
Fig. 2 is a kind of work flow diagram of petroleum hydrocarbon contaminated soil renovation technique of the present invention.
Fig. 3 is the structural representation of reactive tank used in a kind of one embodiment of petroleum hydrocarbon contaminated soil renovation technique of the present invention
Figure.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Please refer to Fig.1 and Fig. 2, the embodiment provides a kind of petroleum hydrocarbon contaminated soil renovation technique, including with
Lower step：
Step S1 is crushed contaminated soil using crusher, during crushing on contaminated soil spray microbial inoculum and
The addition of medicament, microbial inoculum and medicament is respectively 50~100mL/L soil, and the volume ratio of microbial inoculum and medicament is 1:1, stirring makes
Microbial inoculum and medicament evenly distribute in contaminated soil, are conducive to improve remediation efficiency；Wherein, the microbial inoculum of addition is according to contaminated soil
Property culture obtain；Content, the component of the contaminated soil petrochina hydrocarbon of different regions have apparent difference, therefore according to be repaired
The corresponding microbial inoculum of property culture of multiple contaminated soil can effectively improve flexibility and the applicability of renovation technique.
Contaminated soil is transported in reactive tank, during transport on contaminated soil by step S2 using conveyor
Continue to spray microbial inoculum and medicament, the addition of microbial inoculum and medicament is respectively 50~100mL/L soil, and the volume of microbial inoculum and medicament
Than being 1:1, which is conducive to shorten the biological prosthetic period.
Step S3, during contaminated soil is filled into reactive tank, according to the humidity of contaminated soil and hydrocarbon content to anti-
Answer and continue supplement spray microbial inoculum, water and medicament in slot, after contaminated soil fills reactive tank, from the bottom of reactive tank from the bottom to top to
10~30 DEG C of air is passed through in reactive tank, the needs of microorganism are met with the oxygen content ensured in reactive tank, are passed through air
Time is 10~30 days, and the macromolecule petroleum hydrocarbon in contaminated soil is degraded to low molecule petroleum hydrocarbon by microbial inoculum, is being passed through air
In the process, water and medicament are supplemented constantly into reactive tank to meet the growing environment of microbial inoculum.
Step S1, in S2 and S3, the medicament of addition provides nutrition for microbial inoculum, and it is to ensure the wet of contaminated soil to add in water
Degree meets the growing environment of microbial inoculum.
Step S4 is passed through 60~80 DEG C of air into reactive tank from the bottom of reactive tank and carries out stripping to contaminated soil,
60~80 DEG C of air expels the volatile low molecule petroleum hydrocarbon in contaminated soil, and low molecule petroleum hydrocarbon can be unified to receive
Collection processing.
For a further understanding of the present invention, with reference to embodiment to the petroleum hydrocarbon contaminated soil renovation technique of the present invention into
Row is described in detail.
Embodiment 1：
Contaminated soil is crushed using crusher, sprays microbial inoculum and medicament, bacterium on contaminated soil during crushing
The addition of agent is 55mL/L soil, and the addition of medicament is 55mL/L soil, and stirring makes microbial inoculum and medicament in contaminated soil
It evenly distributes；Contaminated soil is transported in reactive tank using conveyor, continues to spray on contaminated soil during transport
Gonococcus agent and medicament, the addition of microbial inoculum is 60mL/L soil, and the addition of medicament is 60mL/L soil；According to contaminated soil
Humidity and hydrocarbon content continue supplement spray microbial inoculum, water and medicament into reactive tank, after contaminated soil fills reactive tank, by reactive tank
Bottom 15 DEG C of air is passed through into reactive tank from the bottom to top, the need of microorganism are met with the oxygen content ensured in reactive tank
Will, the time for being passed through air is 25 days；65 DEG C of air is passed through into reactive tank, stripping, 65 DEG C of air are carried out to contaminated soil
Volatile low molecule petroleum hydrocarbon in contaminated soil is expelled.
Embodiment 2：
Contaminated soil is crushed using crusher, sprays microbial inoculum and medicament, bacterium on contaminated soil during crushing
The addition of agent is 75mL/L soil, and the addition of medicament is 75mL/L soil, and stirring makes microbial inoculum and medicament in contaminated soil
It evenly distributes；Contaminated soil is transported in reactive tank using conveyor, continues to spray on contaminated soil during transport
Gonococcus agent and medicament, the addition of microbial inoculum is 70mL/L soil, and the addition of medicament is 70mL/L soil；According to contaminated soil
Humidity and hydrocarbon content continue supplement spray microbial inoculum, water and medicament into reactive tank, after contaminated soil fills reactive tank, by reactive tank
Bottom 20 DEG C of air is passed through into reactive tank from the bottom to top, the need of microorganism are met with the oxygen content ensured in reactive tank
Will, the time for being passed through air is 20 days；70 DEG C of air is passed through into reactive tank, stripping, 70 DEG C of air are carried out to contaminated soil
Volatile low molecule petroleum hydrocarbon in contaminated soil is expelled.
Embodiment 3：
Contaminated soil is crushed using crusher, sprays microbial inoculum and medicament, bacterium on contaminated soil during crushing
The addition of agent is 95mL/L soil, and the addition of medicament is 95mL/L soil, and stirring makes microbial inoculum and medicament in contaminated soil
It evenly distributes；Contaminated soil is transported in reactive tank using conveyor, continues to spray on contaminated soil during transport
Gonococcus agent and medicament, the addition of microbial inoculum is 85mL/L soil, and the addition of medicament is 85mL/L soil；According to contaminated soil
Humidity and hydrocarbon content continue supplement spray microbial inoculum, water and medicament into reactive tank, from the bottom of reactive tank from the bottom to top to reaction
25 DEG C of air is passed through in slot, the needs of microorganism are met with the oxygen content ensured in reactive tank, the time for being passed through air is 15
My god；75 DEG C of air is passed through into reactive tank, stripping is carried out to contaminated soil, 75 DEG C of air will be volatile in contaminated soil
Low molecule petroleum hydrocarbon expel.
In one embodiment, when being repaired using renovation technique provided by the invention to contaminated soil, the reactive tank that uses
Structure as shown in Fig. 2, the top of reactive tank is open or enclosed construction, and equipped with gas collecting apparatus 101, gas collecting apparatus 101 is received
Collect the exhaust gas discharged in reactive tank, effectively avoid secondary pollution.
The bottom of reactive tank is equipped with several evenly distributed air intake branches 102, and the air inlet of these air intake branches 102 connects
Inlet manifold 103 is met, inlet manifold 103 connects heating unit 104, and the heating of heating unit 104 is drawn into inlet manifold's 103
Air, air are flowed into through air intake branch 102 in reactive tank after being heated, and heating unit 104 connects control device 105, control
The heating temperature of hydrocarbon content control heating unit 104 of the device 105 in gas in reactive tank.
Temperature sensor 106, oxygen sensor 107, gas detecting instrument 108 and soil moisture sensing are placed in reactive tank
Device 109, the outside of reactive tank are equipped with display device 110, temperature sensor 106, oxygen sensor 107,108 and of gas detecting instrument
Soil humidity sensor 109 is connect with display device 110, and temperature sensor 109 monitors the temperature in reactive tank in real time, and will
Temperature data in reactive tank is transmitted to display device 110, and oxygen sensor 107 monitors the oxygen concentration in reactive tank in real time,
And by oxygen concentration data transfer to display device 110, the hydrocarbon that gas detecting instrument 108 is monitored in real time in the gas in reactive tank contains
Amount, and by hydrocarbon content data transfer to display device 110, the humidity of 109 real-time monitoring pollution soil of soil humidity sensor, and
The humidity data of contaminated soil is transmitted to display device 110, temperature that experimenter is shown on 110 according to the display device, oxygen
The medicament of the volume of air, temperature and supplement and the amount of water that gas concentration, hydrocarbon content and humidity data adjustment are passed through.
Petroleum hydrocarbon contaminated soil renovation technique provided by the invention is given birth to first by spraying microbial inoculum on contaminated soil
Then object reparation is heated to 60~80 DEG C of air by being passed through and carries out peripheral doses, effectively shortens the biological prosthetic period, repair
The multiple period is 15 days~45 days；Renovation technique degradation efficiency provided by the invention is high, at low cost；Renovation technique provided by the invention
By adding microbial inoculum in reactive tank, the growing environment of microbial inoculum can be preferably controlled, and then ensure the activity of microbial inoculum.
Herein, the involved nouns of locality such as forward and backward, upper and lower are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of petroleum hydrocarbon contaminated soil renovation technique, which is characterized in that include the following steps：
S1 is crushed contaminated soil using crusher, sprays microbial inoculum and medicament on contaminated soil during crushing；
Contaminated soil using conveyor is transported in reactive tank, continues to spray on contaminated soil during transport by S2
Microbial inoculum and medicament；
S3, during contaminated soil is filled into reactive tank, according to the humidity of contaminated soil and hydrocarbon content into reactive tank after
Continuous supplement spray microbial inoculum, water and medicament, after contaminated soil fills reactive tank, from the bottom of reactive tank from the bottom to top into reactive tank
10~30 DEG C of air is passed through, the needs of microorganism are met with the oxygen content ensured in reactive tank, the time for being passed through air is 10
~30 days, the macromolecule petroleum hydrocarbon in contaminated soil was degraded to low molecule petroleum hydrocarbon by microbial inoculum；
S4 is passed through 60~80 DEG C of air into reactive tank from the bottom of reactive tank and carries out stripping to contaminated soil, 60~80 DEG C
Air the low molecule petroleum hydrocarbon in contaminated soil is expelled.
2. petroleum hydrocarbon contaminated soil renovation technique as described in claim 1, which is characterized in that the microbial inoculum is according to contaminated soil
Property culture obtain.
3. petroleum hydrocarbon contaminated soil renovation technique as described in claim 1, which is characterized in that in step S1, the microbial inoculum and
The addition of medicament is respectively 50~100mL/L soil, and the volume ratio of the microbial inoculum and medicament is 1:1.
4. petroleum hydrocarbon contaminated soil renovation technique as described in claim 1, which is characterized in that in step S2, the microbial inoculum and
The addition of medicament is respectively 50~100mL/L soil, and the volume ratio of the microbial inoculum and medicament is 1:1.
5. petroleum hydrocarbon contaminated soil renovation technique as described in claim 1, which is characterized in that the top of the reactive tank is equipped with
Gas collecting apparatus, the gas collecting apparatus collect the exhaust gas discharged in reactive tank.
6. petroleum hydrocarbon contaminated soil renovation technique as described in claim 1, which is characterized in that the bottom of the reactive tank is laid with
There are several evenly distributed air intake branches, the air inlet connection inlet manifold of these air intake branches, inlet manifold's connection adds
Thermal, the heating devices heat are drawn into the air of inlet manifold, and air is flowed into instead after being heated through air intake branch
It answers in slot.
7. petroleum hydrocarbon contaminated soil renovation technique as described in claim 1, which is characterized in that be placed with temperature in the reactive tank
Sensor, oxygen sensor, gas detecting instrument and soil humidity sensor are spent, the outside of the reactive tank is equipped with display device,
The temperature sensor, oxygen sensor, gas detecting instrument and soil humidity sensor are connect with display device, the temperature
Sensor monitors the temperature in reactive tank in real time, and the temperature data in reactive tank is transmitted to display device, and the oxygen passes
Sensor monitors the oxygen concentration in reactive tank in real time, and by oxygen concentration data transfer to display device, the gas detecting instrument
Hydrocarbon content in gas in monitoring reactive tank in real time, and by hydrocarbon content data transfer to display device, the soil moisture passes
The humidity of the real-time monitoring pollution soil of sensor, and the humidity data of contaminated soil is transmitted to display device.
8. petroleum hydrocarbon contaminated soil renovation technique as claimed in claim 6, which is characterized in that the heating unit connection control
Device, the heating temperature of hydrocarbon content control heating unit of the control device in gas in reactive tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205244.1A CN108246791A (en) | 2018-03-13 | 2018-03-13 | A kind of petroleum hydrocarbon contaminated soil renovation technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810205244.1A CN108246791A (en) | 2018-03-13 | 2018-03-13 | A kind of petroleum hydrocarbon contaminated soil renovation technique |
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| CN201810205244.1A Pending CN108246791A (en) | 2018-03-13 | 2018-03-13 | A kind of petroleum hydrocarbon contaminated soil renovation technique |
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Cited By (3)
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| CN108941187A (en) * | 2018-07-19 | 2018-12-07 | 珠海市万顺睿通科技有限公司 | A kind of abatement of pollution method of contaminated soil |
| CN111451268A (en) * | 2020-04-13 | 2020-07-28 | 宝航环境修复有限公司 | Continuous soil bioremediation reactor and remediation method thereof |
| CN113145635A (en) * | 2021-03-17 | 2021-07-23 | 中冶南方都市环保工程技术股份有限公司 | Microbial remediation equipment and remediation method suitable for contaminated soil |
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