CN104906916B - Waste gas treatment system for soil remediation of volatile organically contaminated field and process thereof - Google Patents
Waste gas treatment system for soil remediation of volatile organically contaminated field and process thereof Download PDFInfo
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- CN104906916B CN104906916B CN201510298125.1A CN201510298125A CN104906916B CN 104906916 B CN104906916 B CN 104906916B CN 201510298125 A CN201510298125 A CN 201510298125A CN 104906916 B CN104906916 B CN 104906916B
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Abstract
The invention relates to a waste gas treatment system for soil remediation of a volatile organically contaminated field and a process thereof. The system is used for efficiently treating soil steam waste gas extracted or desorbed or volatilized in the soil remediation process of the volatile organically contaminated field and recycling separated volatile organic compounds or taking the separated volatile organic compounds as fuels. The waste gas treatment system is slightly affected by the change of variety and concentration of pollutants of the field and is wide in applicability; the device can be integrated, can be movable, and is applicable to the characteristics of remediation of contaminated fields; chemical substances adsorbed on activated carbon can be conveniently removed, and automated equipment lightens the workload of operators; pollution-free emission is realized after pollutants are completely removed, and volatile organic matters in the contaminated field can be recycled, so that the influence of waste gas emission to environment is reduced, and secondary pollution is avoided.
Description
Technical field
The present invention relates to a kind of volatility organic contamination place soil remediation exhaust treatment system and technique thereof, for soil remediation industry, it is a kind of soil steam exhaust efficiently processing in the soil repair process of volatility organic contamination place and extracting (or desorbing or volatilize) out, and using the exhaust treatment system of isolated volatile organic compounds recovery recycling (or as fuel).
Background technology
Volatile organic matter is according to the definition boiling point of World Health Organization (WHO) at the compound of 50 DEG C-250 DEG C, and under room temperature, saturated vapor pressure is more than 133.32Pa, the type organic being present in the most in vapour form in air.By the difference of its chemical constitution, eight classes can be further divided into: alkanes, aromatic hydrocarbons, alkenes, halohydrocarbon, esters, aldehydes, ketone and other.The main component of VOCs has: hydro carbons, halogenated hydrocarbons, oxygen hydrocarbon and nitrogen hydrocarbon, and it includes: benzene homologues, organic chloride, freon series, organic ketone, amine, alcohol, ether, ester, acid and petroleum hydrocarbon compound etc..
In soil, volatility organic contamination place extracts (desorbing) out by gas phase extracting (SVE)/heterogeneous extracting (MPE)/desorption technique; the usual complex chemical composition of soil steam exhaust; fluctuation of concentration is bigger; activated carbon adsorption exhaust-gas treatment does not possess regeneration condition etc. due to contaminated site; the exhaust-gas treatment making contaminated site is difficult to accomplish qualified discharge; soil steam exhaust processes conventional method at present is active carbon particle absorption, and this technology is applied significant limitation in contaminated site repair process:
1, the place repaired is the most seriously polluted, and the organic pollution of extraction is dense, and process organic concentration changes greatly, this technology inapplicable.
2, during site remediation, removal place is available for without steam, reuses and become infeasible after causing carbon, C regeneration.
3, above 2 make the technology of use during soil remediation, need frequently to change activated carbon, and this has increased the weight of the burden of operator, too increases the cost of soil remediation.
4, the limitation of technology makes contaminated site exhaust-gas treatment be difficult to qualified discharge, and resident complains, social event is of common occurrence.
If 5, the substantial amounts of activated carbon having adsorbed high concentration can not get properly disposing, secondary pollution can be caused.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of suitability wide, can be integrated, removable, alleviate workman's workload, and non-pollution discharge can be realized, reclaim volatile organic matter, it is to avoid the volatility organic contamination place soil remediation exhaust treatment system of secondary pollution and technique thereof.
The object of the present invention is achieved like this:
A kind of volatility organic contamination place soil remediation exhaust treatment system, this exhaust treatment system there is air-introduced machine, it is connected with moisture trap on the air inlet pipeline of air-introduced machine, the liquid outlet of moisture trap is connected with water storage container by delivery pump, the gas outlet of moisture trap is connected with air-introduced machine, the air outlet of this air-introduced machine is connected with receiving tower by compressor, the escape pipe receiving tower is linked in air cooler, the gas outlet of air cooler is connected with heat exchanger, and it is also equipped with condenser on the discharging tube of this heat exchanger, the air vent of described heat exchanger is linked in reproducible adsorber, the leakage fluid dram of heat exchanger is linked in Chemical concentration recycling can.
A kind of technique of volatility organic contamination place soil remediation exhaust treatment system:
1) soil steam is extracted out from underground by air-introduced machine by extraction well, moisture trap, after carrying out gas-water separation, liquid will be delivered in water storage container by delivery pump；
2) the isolated waste gas of moisture trap is admitted to compressor, is pressurized to 1MPa, in compression process, condenses water and is separated, and waste gas is then passed through in reception tower；
3) waste gas received in tower is cooled to room temperature through air cooler；
4) waste gas being cooled to room temperature delivers to the heat exchanger of deepfreeze, and temperature is cooled further to-20 DEG C, and most chemical substances are here condensed；
5) the waste gas stream cooled down is admitted in reproducible adsorber, just can enter air after removing the chemical substance of any remnants；
6) liquid condensed out is loaded in recycling can safely, and transport is to recycling outside the venue, or disposes as fuel.
Volatility organic contamination place soil remediation exhaust treatment system of the present invention and technique thereof have the advantage that
1, this exhaust treatment system is affected little by kind and the concentration change of contaminated sites thing, has wide applicability.
2, the device of exhaust treatment system can be integrated, it is achieved portable, adapts to the feature that contaminated site is repaired.
3, in exhaust treatment system, on activated carbon, the chemical substance of absorption can conveniently be removed, and the equipment of automatization alleviates the workload of operator.
4, this exhaust treatment system realizes non-pollution discharge after can completing pollutant to remove, and contaminated site volatile organic matter can be recycled utilization.
5, this exhaust treatment system realizes non-pollution discharge after can completing pollutant to remove, and decreases the waste gas discharge impact on environment.
6, the chemical substance of absorption can conveniently be removed on the activated carbon of this exhaust treatment system, it is to avoid secondary pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of volatility organic contamination place of the present invention soil remediation exhaust treatment system.
In figure: air-introduced machine 1, moisture trap 2, delivery pump 3, water storage container 4, compressor 5, reception tower 6, air cooler 7, heat exchanger 8, condenser 9, adsorber 10, recycling can 11.
Detailed description of the invention
See Fig. 1, the present invention relates to a kind of volatility organic contamination place soil remediation exhaust treatment system, this exhaust treatment system has air-introduced machine 1, moisture trap 2 it is connected with on the air inlet pipeline of air-introduced machine 1, the liquid outlet of moisture trap 2 is connected with water storage container 4 by delivery pump 3, the gas outlet of moisture trap 2 is connected with air-introduced machine 1, the air outlet of this air-introduced machine 1 is connected with receiving tower 6 by compressor 5, the escape pipe receiving tower 6 is linked in air cooler 7, the gas outlet of air cooler 7 is connected with heat exchanger 8, and it is also equipped with condenser 9 on the discharging tube of this heat exchanger 8, the air vent of described heat exchanger 8 is linked in reproducible adsorber 10, the leakage fluid dram of heat exchanger 8 is linked in Chemical concentration recycling can 11.
The technique of a kind of volatility organic contamination place soil remediation exhaust treatment system is:
1) soil steam is extracted out from underground by air-introduced machine by extraction well, moisture trap, after carrying out gas-water separation, liquid will be delivered in water storage container by delivery pump.
2) the isolated waste gas of moisture trap is admitted to compressor, is pressurized to 1MPa, in compression process, condenses water and is separated, and waste gas is then passed through in reception tower.
3) waste gas received in tower is cooled to room temperature through air cooler.
4) waste gas being cooled to room temperature delivers to the heat exchanger of deepfreeze, and temperature is cooled further to-20 DEG C, and most chemical substances are here condensed.
5) the waste gas stream cooled down is admitted in reproducible adsorber, just can enter air after removing the chemical substance of any remnants.
6) liquid condensed out is loaded in recycling can safely, and transport is to recycling outside the venue, or disposes as fuel.
Claims (2)
1. a volatility organic contamination place soil remediation exhaust treatment system, it is characterised in that: in this exhaust treatment system
Having air-introduced machine (1), the air inlet pipeline of air-introduced machine (1) is connected with moisture trap (2), the liquid outlet of moisture trap (2) passes through
Delivery pump (3) is connected with water storage container (4), and the gas outlet of moisture trap (2) is connected with air-introduced machine (1), this air-introduced machine
(1) air outlet is connected with receiving tower (6) by compressor (5), and the escape pipe receiving tower (6) is linked in air cooler (7),
The gas outlet of air cooler (7) is connected with heat exchanger (8), and is also equipped with condensation on the discharging tube of this heat exchanger (8)
Device (9), the air vent of described heat exchanger (8) is linked in reproducible adsorber (10), and the leakage fluid dram of heat exchanger (8) is linked
In Chemical concentration recycling can (11).
The technique of a kind of volatility organic contamination place the most as claimed in claim 1 soil remediation exhaust treatment system, its feature
It is:
1) soil steam is extracted out from underground by air-introduced machine by extraction well, moisture trap, after carrying out gas-water separation, liquid will
Delivered in water storage container by delivery pump；
2) the isolated waste gas of moisture trap is admitted to compressor, is pressurized to 1MPa, in compression process, condenses water and is separated
Going out, waste gas is then passed through in reception tower；
3) waste gas received in tower is cooled to room temperature through air cooler；
4) waste gas being cooled to room temperature delivers to the heat exchanger of deepfreeze, and temperature is cooled further to-20 DEG C, and the overwhelming majority waves
The property sent out organic pollution is here condensed；
5) the waste gas stream cooled down is admitted in reproducible adsorber, just may be used after removing the volatile organic contaminant of any remnants
Enter air；
6) liquid condensed out is loaded in recycling can safely, and transport is to recycling outside the venue, or disposes as fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298125.1A CN104906916B (en) | 2015-06-03 | 2015-06-03 | Waste gas treatment system for soil remediation of volatile organically contaminated field and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298125.1A CN104906916B (en) | 2015-06-03 | 2015-06-03 | Waste gas treatment system for soil remediation of volatile organically contaminated field and process thereof |
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| Publication Number | Publication Date |
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| CN104906916A CN104906916A (en) | 2015-09-16 |
| CN104906916B true CN104906916B (en) | 2017-01-11 |
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| CN201510298125.1A Active CN104906916B (en) | 2015-06-03 | 2015-06-03 | Waste gas treatment system for soil remediation of volatile organically contaminated field and process thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109603412A (en) * | 2018-11-30 | 2019-04-12 | 北京高能时代环境技术股份有限公司 | Contaminated soil thermal desorption organic tail gas handles integrated system and processing method |
| CN113182343B (en) * | 2021-01-11 | 2022-05-13 | 中国科学院生态环境研究中心 | Device and method for repairing organic contaminated soil by using resistance heating coupling oxidant |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030129735A1 (en) * | 2002-01-08 | 2003-07-10 | Moorhead Elliot I. | Biocatalytic method for remediation of soil, water and air. |
| JP2011156453A (en) * | 2010-01-29 | 2011-08-18 | Shimizu Corp | In-situ cleaning method of contaminated soil and contaminated underground water |
| CN101810987B (en) * | 2010-05-17 | 2012-05-30 | 天津大学 | Resource tail gas treatment system and technology for soil vapor extraction repair technique |
| CN103463937B (en) * | 2013-07-25 | 2015-08-12 | 天津大学 | The volatility organic tail gas processing method of resourcebility and skid mobile device |
| CN103657328A (en) * | 2013-12-04 | 2014-03-26 | 天津虹港农作物种植有限公司 | Novel condensation purification apparatus and application |
| CN204973468U (en) * | 2015-06-03 | 2016-01-20 | 江苏华讯环境科技有限公司 | Waste gas treatment system is restoreed to organic contaminated site soil of volatility |
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