CN106216383A - A kind of microwave repairing method of places polluted by polynuclear aromatic hydrocarbons - Google Patents
A kind of microwave repairing method of places polluted by polynuclear aromatic hydrocarbons Download PDFInfo
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- CN106216383A CN106216383A CN201610853459.5A CN201610853459A CN106216383A CN 106216383 A CN106216383 A CN 106216383A CN 201610853459 A CN201610853459 A CN 201610853459A CN 106216383 A CN106216383 A CN 106216383A
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- microwave
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- heating appts
- air
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Classifications
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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
Abstract
The invention discloses the microwave repairing method of a kind of places polluted by polynuclear aromatic hydrocarbons, the method includes to air-dry under field conditions (factors) containing polycyclic aromatic hydrocarbon, total petroleum hydrocarbon contaminated soil, and guarantees that the soil moisture content after air-drying is 10 25%；Soil after air-drying carries out screening process, removes bulk stone, concrete block, it is thus achieved that pending soil；Take a certain amount of microwave absorption uniform with described pending mixing with soil；The pending soil being blended with microwave adsorbent puts into microwave heating appts, start the microwave generator of described microwave heating appts, guarantee that the temperature in described microwave heating appts reaches preset temperature, described pending soil is carried out the microwave treatment of certain time.Operation is simple for the method that the application provides, and runs the time short, and treatment effeciency is high, removable, safety and environmental protection, it is important that processing stage tail gas generation amount little, purify low cost, provide new effective method again for contaminated soil hot repair.
Description
Technical field
The present invention relates to relevant PAHs in soil organic pollution processing technology field in environmental conservation, particularly relate to
And the microwave repairing method of a kind of places polluted by polynuclear aromatic hydrocarbons.
Background technology
Owing to lacking the urban planning of necessity in history, a lot of industrial undertaking of China is positioned at downtown area.20th century
Since the nineties, Chinese society's economic development is rapid, and urbanization process is accelerated, and industry restructuring is deepened, and causes land resource
In short supply, many cities start to migrate the industrial undertaking of main city zone to go out of the city, and produce the place that there is environmental risk in a large number.These are dirty
The existence in dye place brings two fold problem: be on the one hand environment and health risk, be on the other hand hinder urban construction and
Economic development.
Owing to China's soil restoring technology entirety is started late, contaminated site recovery technique and engineering experience are the most not
Foot, relies primarily on introduction, foreign advanced technology, but advanced foreign technology can not adapt to China's Polluted Soil present situation completely.
Therefore, for the situation in China's Polluted Soil place, research and development has the economy, efficiently, quickly, thoroughly of independent intellectual property right
Site remediation method and apparatus the most necessary.
Due to the characteristic of microwave, certain depth can be penetrated, make the polar molecule in irradiated material preferentially heat, thing
Matter is overall heating, and relative to the mode of heating of traditional conduction of heat, firing rate faster, more saves the energy, and heating is more
Uniformly.
Summary of the invention
The invention provides the microwave repairing method of a kind of places polluted by polynuclear aromatic hydrocarbons.
The invention provides following scheme:
A kind of microwave repairing method of places polluted by polynuclear aromatic hydrocarbons, the method comprises the following steps:
Step one: will air-dry under field conditions (factors) containing polycyclic aromatic hydrocarbon, total petroleum hydrocarbon contaminated soil, and guarantee the soil after air-drying
Earth moisture content is 10-25%；
Step 2: the soil after air-drying carries out screening process, removes bulk stone, concrete block, it is thus achieved that pending soil；
Step 3: take a certain amount of microwave absorption uniform with described pending mixing with soil；
Step 4: the pending soil being blended with microwave adsorbent puts into microwave heating appts, starts described microwave treatment
The microwave generator of device, it is ensured that the temperature in described microwave heating appts reaches preset temperature, enters described pending soil
The microwave treatment of row certain time.
Preferred: described microwave absorption is carborundum ball.
Preferred: described in be blended with the pending soil of microwave adsorbent and put into microwave heating appts, start described
The microwave generator of microwave heating appts, including:
The power of described microwave generator is 0.5-100 kilowatt.
Preferred: described in guarantee that the temperature in described microwave heating appts reaches preset temperature, including:
Described preset temperature is no more than 600 DEG C.
Preferred: the described microwave treatment that described pending soil is carried out certain time；Including:
The microwave frequency of described microwave treatment is 915 megahertzs or 2450 megahertzs, and described certain time is 5 minutes-60 minutes.
The specific embodiment provided according to the present invention, the invention discloses techniques below effect:
By the invention it is possible to realize the microwave repairing method of a kind of places polluted by polynuclear aromatic hydrocarbons, under a kind of implementation, should
Method comprises the following steps: will air-dry under field conditions (factors) containing polycyclic aromatic hydrocarbon, total petroleum hydrocarbon contaminated soil, and guarantee to air-dry
After soil moisture content be 10-25%；Soil after air-drying carries out screening process, removes bulk stone, concrete block, it is thus achieved that
Pending soil；Take a certain amount of microwave absorption uniform with described pending mixing with soil；It is blended with microwave adsorbent
Pending soil puts into microwave heating appts, starts the microwave generator of described microwave heating appts, it is ensured that at described microwave
Temperature in reason device reaches preset temperature, and described pending soil carries out the microwave treatment of certain time.The application provides
Method operation is simple, run the time short, treatment effeciency is high, removable, safety and environmental protection, it is important that processing stage tail gas produce
Raw amount is little, purifies low cost, provides new effective method again for contaminated soil hot repair.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment
It is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained, broadly falls into the scope of protection of the invention.
The method that the application provides can process containing naphthalene, 2-methyl naphthalene, 2-chloronaphthalene, acenaphthene, acenaphthene, fluorenes, phenanthrene, anthracene, glimmering
Anthracene, pyrene, benzo (a) anthracene, in the wrong, benzo (b) fluoranthene, benzo (k) fluoranthene, benzo (a) pyrene, indeno (1,2,3-cd) pyrene, dibenzo
(a, h) anthracene and benzo (g, h, i) pyrene, the microwave treatment of the organic pollutions such as total petroleum hydrocarbon C6-C16 and C17-C36.Use
Equipment has that volume is little, easy to operate, be easy to the features such as movement, highly versatile.
The method that the embodiment of the present application provides makes full use of the feature of microwave heating, inside and outside heats simultaneously, and firing rate is fast,
Homogeneous heating.Microwave carries out heating to material can make material uniformly heat up in a short period of time, but due to general soil
It is not easy to absorb microwave, the Organic substance in soil, has certain wave-sucking performance, but owing to content is little, so also needing to add
Add a certain proportion of microwave absorption (carborundum), strengthen the microwave absorption capacity of soil, make the pollutant in soil obtain everywhere
Reason.Polycyclic aromatic hydrocarbon, when reaching respective boiling point, will gasify and be evaporated from soil, thus reaches to repair mesh
's.
Embodiment
The microwave repairing method of a kind of places polluted by polynuclear aromatic hydrocarbons that the embodiment of the present invention provides, the method includes following step
Rapid:
Step one: will air-dry under field conditions (factors) containing polycyclic aromatic hydrocarbon, total petroleum hydrocarbon contaminated soil, and guarantee the soil after air-drying
Earth moisture content is 10-25%；
Step 2: the soil after air-drying carries out screening process, removes bulk stone, concrete block, it is thus achieved that pending soil；Anti-
Only equipment is damaged, and ensure microwave treatment efficiency.
Step 3: take a certain amount of microwave absorption uniform with described pending mixing with soil；Described microwave absorption is
Carborundum ball.Microwave absorption can according to circumstances select to add kind and dosage in actual applications.
Step 4: the pending soil being blended with microwave adsorbent puts into microwave heating appts, starts described microwave
The microwave generator of processing means, it is ensured that the temperature in described microwave heating appts reaches preset temperature, to described pending soil
Earth carries out the microwave treatment of certain time.In actual applications, can be by Polluted Soil dress such as dolly, and in guaranteeing microwave protection cover
And fill soil in microwave enclosure on dolly, to prevent microwave from leakage.The power of described microwave generator is 0.5-100 kilowatt.
Described preset temperature is no more than 600 DEG C.In actual applications according to the pollutant kind of handled contaminated soil, at control
Reason temperature.The microwave frequency of described microwave treatment is 915 megahertzs or 2450 megahertzs, described certain time be 5 minutes-60 points
Clock.
In actual applications, the embodiment of the present application may be provided for being fixed on microwave enclosure ground, and cabinet wall is for protecting
Adiabator, radiation port is positioned at casing top, and is connected with microwave generator by waveguide pipe, and has single power distribution cabinet, distribution
Cashier's office in a shop being provided with switch, heat time heating time is arranged, and real time temperature shows, box bottom is provided with the dolly of belt track, bottom dolly and
Surrounding is steel plate, steel plate has insulation material, casing import and export have 3 meters of microwave protection covers, has guarantor inside protective cover outlet section
Adiabator, collection and confinement of gases mouth, and external exhaust gas processing device are arranged at casing top.
In a word, the microwave repairing method of places polluted by polynuclear aromatic hydrocarbons that the application provides, use microwave as thermal source, according to
Adding appropriate microwave absorption, and mix homogeneously in soil, utilize microwave heating contaminated soil, make in soil is various organic
Pollutant, are processed by volatilizing, decomposing or fixed three kinds of mechanism.Equipment uses the microwave enclosure being fixed on ground, case
Internal wall is insulation material, and radiation port is positioned at casing top, and is connected with microwave generator by waveguide pipe, and is furnished with individually
Control power distribution cabinet, bottom use belt track transportable dolly, dolly can along guide rail enter casing, bottom dolly and
Surrounding is steel plate, and steel plate has insulation material, imports and exports the rustless steel microwave protection cover having a length of 3 meters, prevents microwave from leakage,
There is insulation material inside protective cover outlet section, in casing, have temperature measuring equipment, casing top to have at collection and confinement of gases mouth, and external tail gas
Reason device, the tail gas after process enters air after treatment, and to ensure not result in secondary pollution, the embodiment of the present application provides
Method operation is simple, run the time short, treatment effeciency is high, removable, safety and environmental protection, it is important that processing stage tail gas produce
Raw amount is little, purifies low cost, provides new effective method again for contaminated soil hot repair.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in protection scope of the present invention
In.
Claims (5)
1. the microwave repairing method of a places polluted by polynuclear aromatic hydrocarbons, it is characterised in that said method comprising the steps of:
Step one: will air-dry under field conditions (factors) containing polycyclic aromatic hydrocarbon, total petroleum hydrocarbon contaminated soil, and guarantee the soil after air-drying
Earth moisture content is 10-25%；
Step 2: the soil after air-drying carries out screening process, removes bulk stone, concrete block, it is thus achieved that pending soil；
Step 3: take a certain amount of microwave absorption uniform with described pending mixing with soil；
Step 4: the pending soil being blended with microwave adsorbent puts into microwave heating appts, starts described microwave treatment
The microwave generator of device, it is ensured that the temperature in described microwave heating appts reaches preset temperature, enters described pending soil
The microwave treatment of row certain time.
Method the most according to claim 1, it is characterised in that described microwave absorption is carborundum ball.
Method the most according to claim 1, it is characterised in that described in be blended with the pending soil of microwave adsorbent and put
Enter in microwave heating appts, start the microwave generator of described microwave heating appts, including:
The power of described microwave generator is 0.5-100 kilowatt.
Method the most according to claim 1, it is characterised in that described in guarantee that the temperature in described microwave heating appts reaches
Preset temperature, including:
Described preset temperature is no more than 600 DEG C.
Method the most according to claim 1, it is characterised in that described described pending soil is carried out the micro-of certain time
Ripple processes；Including:
The microwave frequency of described microwave treatment is 915 megahertzs or 2450 megahertzs, and described certain time is 5 minutes-60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853459.5A CN106216383A (en) | 2016-09-27 | 2016-09-27 | A kind of microwave repairing method of places polluted by polynuclear aromatic hydrocarbons |
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| CN201610853459.5A CN106216383A (en) | 2016-09-27 | 2016-09-27 | A kind of microwave repairing method of places polluted by polynuclear aromatic hydrocarbons |
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| CN106216383A true CN106216383A (en) | 2016-12-14 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340306A (en) * | 2017-09-08 | 2017-11-10 | 大连理工大学 | A kind of method for detecting oily waste water petrochina hydrocarbon content |
| CN107363087A (en) * | 2017-09-13 | 2017-11-21 | 西南科技大学 | A kind of processing method of Petroleum concentration soil |
| CN107983760A (en) * | 2017-12-15 | 2018-05-04 | 新冶高科技集团有限公司 | A kind of method that organic pollution solid waste reparation is realized using microwave treatment |
| WO2019010884A1 (en) * | 2017-07-14 | 2019-01-17 | 江苏大丰港和顺科技有限公司 | Microwave soil remediation process |
| CN111215436A (en) * | 2020-01-20 | 2020-06-02 | 浙江固雅环境装备有限公司 | Organic contaminated soil remediation equipment |
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| CN102380507A (en) * | 2011-10-14 | 2012-03-21 | 华中科技大学 | Microwave repair equipment for organic contaminated soil |
| CN102775921A (en) * | 2011-07-21 | 2012-11-14 | 北京京东方光电科技有限公司 | Frame sealing adhesive, preparation method thereof, and preparation method of liquid crystal display panel |
| CN202779152U (en) * | 2012-08-10 | 2013-03-13 | 简绎骥 | Equipment for treating soil polluted by organic matters or mercury by using microwaves |
| CN203664354U (en) * | 2013-12-06 | 2014-06-25 | 东北师范大学 | Microwave and static electricity mixed soil repairing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019010884A1 (en) * | 2017-07-14 | 2019-01-17 | 江苏大丰港和顺科技有限公司 | Microwave soil remediation process |
| CN107340306A (en) * | 2017-09-08 | 2017-11-10 | 大连理工大学 | A kind of method for detecting oily waste water petrochina hydrocarbon content |
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| CN107363087A (en) * | 2017-09-13 | 2017-11-21 | 西南科技大学 | A kind of processing method of Petroleum concentration soil |
| CN107983760A (en) * | 2017-12-15 | 2018-05-04 | 新冶高科技集团有限公司 | A kind of method that organic pollution solid waste reparation is realized using microwave treatment |
| CN107983760B (en) * | 2017-12-15 | 2020-12-15 | 新冶高科技集团有限公司 | Method for realizing organic pollution solid waste remediation by adopting microwave process |
| CN111215436A (en) * | 2020-01-20 | 2020-06-02 | 浙江固雅环境装备有限公司 | Organic contaminated soil remediation equipment |
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Application publication date: 20161214 |