CN103394504B - A kind for the treatment of system of contaminated soil and processing method - Google Patents
A kind for the treatment of system of contaminated soil and processing method Download PDFInfo
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- CN103394504B CN103394504B CN201310285681.6A CN201310285681A CN103394504B CN 103394504 B CN103394504 B CN 103394504B CN 201310285681 A CN201310285681 A CN 201310285681A CN 103394504 B CN103394504 B CN 103394504B
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Abstract
The invention discloses a kind for the treatment of system and processing method of contaminated soil.The treatment system of contaminated soil comprises: air-supported membrane structure, one end of air-supported membrane structure is connected with control pressurer system and ventilation blower by pipeline, the other end of air-supported membrane structure has automatic control and checkout equipment by connection, the other end of air-supported membrane structure is also connected with gas processing device by collection conduit, gas processing device comprises the sack cleaner of coagulation and the charcoal absorption case of two stage treatment, be connected by air exhauster, after charcoal absorption case, be connected with aiutage.Air-supported membrane structure is also provided with import-export system, automatic control and checkout equipment are used for carrying out real time on-line monitoring to the concentration levels of the VOC that air-supported membrane structure produces, and automatically control according to detection data, ventilation process is carried out to air-supported membrane structure inside, makes air-supported membrane structure internal gas meet national requirements.
Description
Technical field
The application relates to a kind for the treatment of system and processing method of soil, particularly relates to a kind for the treatment of system and processing method of contaminated soil.
Background technology
Along with the high speed development of national economy and the paces of Industry Reform are accelerated, some with serious pollution enterprises close one after another, but the Land in Regional Land at its place is polluted, and defines Polluted Soil.Polluted Soil invades owing to causing polluter the soil changing physical mechanics proterties.Normally because soil is subject to the erosion of three-waste pollution thing (waste gas, waste liquid, waste residue), soil nature is changed, thus causes the formation of Polluted Soil.The complicated component of Polluted Soil, in natural stacking process, can discharge pernicious gas.These pernicious gases both can serious harm human health, again the environment of generation secondary pollution to surrounding was brought harm, was therefore very necessary to the process of Polluted Soil.
Summary of the invention
The object of the invention is to be, according to contaminated soil above shortcomings in prior art, to provide a kind for the treatment of system and processing method of contaminated soil.
According to the embodiment of the present invention, a kind for the treatment of system of contaminated soil is provided to comprise: air-supported membrane structure (1), one end of described air-supported membrane structure (1) is connected with control pressurer system (2) by pipeline (3), one end of described air-supported membrane structure (1) is also connected with ventilation blower (4) by pipeline, the other end of described air-supported membrane structure (1) has automatic control and checkout equipment (11) by connection, the other end of described air-supported membrane structure (1) is also connected with gas processing device by collection conduit (6), described gas processing device comprises the sack cleaner (7) of coagulation and the charcoal absorption case (9) of two stage treatment, be connected by exhaust blower (8) between described sack cleaner (7) and described charcoal absorption case (9), aiutage (10) is connected with after described charcoal absorption case (9), described air-supported membrane structure (1) is also provided with import-export system (5), described automatic control and checkout equipment (11) carry out real time on-line monitoring for the concentration levels of the VOC produced described air-supported membrane structure (1), and automatically control according to detection data, when detecting data and exceeding national requirements, described ventilation blower (4) opened by described automatic control and checkout equipment (11), described exhaust blower (8), described sack cleaner (7) and described charcoal absorption case (9), ventilation process is carried out to described air-supported membrane structure (1) inside, the internal gas of described air-supported membrane structure (1) is made to meet national requirements.
The present invention adopts air-supported membrane structure as a kind of new model workshop, and it has following beneficial effect compared with traditional structure workshop:
According to an embodiment of the invention, between the inside of described air-supported membrane structure (1) and the environment in the external world, keep the pressure differential of 200 ~ 300Pa.
The present invention adopts above-mentioned embodiment to have following beneficial effect: because film material has deadweight, so when pressure is lower than 200Pa, the rigidity of film material is not enough, when running into strong wind weather, be easy to along with strong wind waves, concerning whole air-supported membrane structure, there is very large danger, such danger is embodied in: if 1. there is the rigid object very near apart from film material membrane structure inside, as lamp stand, video monitoring bar etc., be easy to make film material touch these rigid objects, cause the breakage of film material to be torn, time serious, air-supported membrane structure can be made to cave in; 2. when whole air-supported membrane structure waves, because wind direction changes at any time, now the shape of air-supported membrane structure also changes at any time, when air-supported membrane structure deformation goes out scope of design, certain the film material point on fixing film material can be made to tear, time serious, air-supported membrane structure can be made to cave in.
When air-supported membrane structure pressure is greater than 300Pa, the air pressure that film material is subject to is excessive, and concrete danger is embodied in: 1. the pressure that is subject to for a long time of film material is excessive, can make film material generation deformation, if the deformation of film material is uneven, like this, the pressure suffered by film material becomes different, and the shape of last air-supported membrane structure unsightly, when there is serious deformation, the pressure that in membrane structure, certain point is subject to can be made maximum, be easy to film material generation breakage is torn, air-supported membrane structure can be caused to cave in.2. if this air-supported membrane structure is portable basis, air-supported membrane structure pressure is excessive, just can produce excessive climbing power, just can make, frictional force between mobile basis and ground diminishes, and when running into strong wind weather, basis can be made to deform, time serious, tearable Ranvier's membrane material, caves in.
According to another implementation of the invention, described control pressurer system (2) comprises pressure sensor, PLC control appliance and air blast;
Described pressure sensor is for detecting the internal pressure of described air-supported membrane structure;
The internal pressure that described PLC control appliance is used for the described air-supported membrane structure detected according to described pressure sensor controls unlatching or the closedown of air blast;
Described air blast is used for the inner blower to described air-supported membrane structure;
Wherein, when described pressure sensor detects that described air-supported membrane structure internal pressure is less than the default low pressure limit of described PLC control appliance, described PLC control appliance assigns open command to described air blast, described air blast is opened and to the inner blower of described air-supported membrane structure, described air-supported membrane structure internal pressure is increased; When described pressure sensor detects that described air-supported membrane structure internal pressure is greater than the default upper pressure limit of described PLC control appliance, described PLC control appliance assigns shutdown command to described air blast, described air blast cuts out and stops the inner blower to described air-supported membrane structure, the internal pressure of described air-supported membrane structure is reduced, so just, the pressure of described air-supported membrane structure can be made to maintain between the default upper pressure limit of described PLC control appliance and low pressure limit, make described air-supported membrane structure maintain certain shape and 0.2KN/m
2~ 0.4KN/m
2rigidity.Described certain shape is preferably oval, also can be circular.Compare in round, oval cross section is when span is identical, and highly lower, the wind-force suffered by it is less, and air-supported membrane structure system is safer.
According to another embodiment of the present invention, the anti-snow load of described air-supported membrane structure (1) is not less than 30Kg/m
2, the wind loading rating of described air-supported membrane structure (1) is not less than 300N/m
2.
According to another embodiment of the present invention, described import-export system (5) comprises the double-deck gas-tight door of vehicles while passing, personnel pass in and out double-deck gas-tight door and safe escape door.
According to another embodiment of the present invention, when described automatic control and checkout equipment (11) open ventilation blower (4) and exhaust blower (8), the intake of described ventilation blower (4) is the same with the air output of described exhaust blower (8), thus does not affect the inner air pressure of air-supported membrane structure (1).
According to another embodiment of the present invention, a kind of processing method of contaminated soil is also provided to comprise:
Step a: contaminated soil is transferred in airtight air-supported membrane structure (1);
Step b: throwing is turned over to described contaminated soil and makes described contaminated soil be broken up and pulverize, thus accelerate the volatilization of organic gas in described contaminated soil;
Step c: the organic gas after volatilization is in an organized way disposed in sack cleaner (7) by collection conduit (6);
Steps d: the organic gas after described sack cleaner (7) process enters charcoal absorption case (9) by exhaust blower (8), and the gas after process enters air through aiutage (10).
According to another embodiment of the present invention, described air-supported membrane structure (1) is connected with control pressurer system (2) by pipeline (3), before the step (a), under the effect of described control pressurer system (2), the inside of described air-supported membrane structure (1) is inflated, makes the pressure differential keeping 200 ~ 300Pa between the inside of described air-supported membrane structure (1) and the environment in the external world.
According to another embodiment of the present invention, electrically driven (operated) turner in described step b, is used to turn over throwing by the walking on the predetermined trajectory on ground to described contaminated soil.
The turner that the present invention uses is electrically driven (operated), compared to the deficiency having the tail gas of secondary pollution existing for diesel driven, the present invention can avoid secondary pollution, and electric drive turner of the present invention is walked in orbit, velocity ratio is very fast, improves to turn over throwing efficiency to soil.
Accompanying drawing explanation
Fig. 1 is the structural representation of contaminated soil treatment system of the present invention.
Detailed description of the invention
The treatment system of contaminated soil of the present invention comprises air-supported membrane structure 1, described air-supported membrane structure 1, one end of described air-supported membrane structure 1 is connected with control pressurer system 2 by pipeline 3, one end of described air-supported membrane structure 1 is connected with ventilation blower 4 by pipeline 12, the other end of described air-supported membrane structure 1 has automatic control and checkout equipment 11 by connection, the other end of described air-supported membrane structure 1 is also connected with gas processing device by collection conduit 6, described gas processing device comprises the sack cleaner 7 of coagulation and the charcoal absorption case 9 of two stage treatment, be connected by exhaust blower 8, aiutage 10 is connected with after charcoal absorption case 9, described air-supported membrane structure 1 is also provided with import-export system 5, described automatic control and checkout equipment 11 carry out real time on-line monitoring for the concentration levels of the VOC produced described air-supported membrane structure 1, and automatically control according to detection data, namely when detecting data and exceeding national requirements, ventilation blower 4 opened by described automatic control and checkout equipment 11, exhaust blower 8, sack cleaner 7 and charcoal absorption case 9, ventilation process is carried out to air-supported membrane structure 1 inside, air-supported membrane structure 1 internal gas is made to meet national requirements.When described automatic control and checkout equipment 11 open ventilation blower 4 and exhaust blower 8, the intake of described ventilation blower 4 is the same with the air output of described exhaust blower 8, thus does not affect the air pressure of air-supported membrane structure 1 inside.
The pressure differential of 200 ~ 300Pa is kept between the inside of described air-supported membrane structure 1 and the environment in the external world.Described control pressurer system 2 comprises pressure sensor, PLC control appliance and air blast.The anti-snow load of described air-supported membrane structure 1 is not less than 30Kg/m
2, the wind loading rating of described air-supported membrane structure 1 is not less than 300N/m
2.Described import-export system 5 comprises the double-deck gas-tight door of vehicles while passing, personnel pass in and out double-deck gas-tight door and safe escape door.
The processing method of contaminated soil of the present invention is described in detail: step a: be transferred to by contaminated soil in airtight air-supported membrane structure 1 hereinafter with reference to Fig. 1; Step b: throwing is turned over to described contaminated soil and makes described contaminated soil be broken up and pulverize, thus accelerate the volatilization of organic gas in described contaminated soil; Step c: the organic gas after volatilization is in an organized way disposed in sack cleaner 7 by collection conduit 6; Steps d: the organic gas after described sack cleaner 7 processes enters charcoal absorption case 9 by exhaust blower 8, and the gas after process enters air through aiutage 10.
Wherein, described air-supported membrane structure 1 is connected with control pressurer system 2 by pipeline 3, before the step (a), under the effect of described control pressurer system 2, the inside of described air-supported membrane structure 1 is inflated, makes the pressure differential keeping 200 ~ 300Pa between the inside of described air-supported membrane structure 1 and the environment in the external world.Described control pressurer system (2) comprises pressure sensor, PLC control appliance and air blast.
The internal pressure of air-supported membrane structure is detected by pressure sensor, when described pressure sensor detects that described air-supported membrane structure internal pressure is less than the default low pressure limit of described PLC control appliance, described PLC control appliance assigns open command to described air blast, described air blast is opened and to the inner blower of described air-supported membrane structure, described air-supported membrane structure internal pressure is increased; When described pressure sensor detects that described air-supported membrane structure internal pressure is greater than the default upper pressure limit of described PLC control appliance, described PLC control appliance assigns shutdown command to described air blast, described air blast cuts out and stops the inner blower to described air-supported membrane structure, the internal pressure of described air-supported membrane structure is reduced, so just, the pressure of described air-supported membrane structure can be made to maintain between the default upper pressure limit of described PLC control appliance and low pressure limit, make described air-supported membrane structure maintain certain shape and rigidity.
Contaminated soil normal temperature is resolved
Normal temperature analytic method of the present invention is the contaminated soil of volatile organic matter for major pollutants, such as pollutant is mainly 1,2 – dichloroethanes, chloroform, vinyl chloride, 1,1,2-trichloroethanes, trichloro-ethylene, tetrachloro-ethylene, carbon tetrachloride, 1,1 – dichloroethylene, benzene, 1,1-dichloroethanes and 1,1,2,2-tetrachloroethanes.
Normal temperature resolving of the present invention is carried out in air-supported membrane structure, contaminated soil is transported in air-supported membrane structure, be deposited in and formulate in position, and stack as requested, then throwing is turned over to contaminated soil, make described contaminated soil be broken up and pulverize, thus accelerate the volatilization of organic gas in described contaminated soil.
Organic pollutant process
Polluted Soil is after turning over throwing, pollutant wherein by desorption out, desorption gas is out disposed in gas processing device through organized gas-collecting pipe, gas processing device processes containing organic gas, and the gas after process reaches the requirement of Beijing's " discharge standard of air pollutants ".
The discharging of soil after purification
Soil after the present invention's purification adopts contaminated soil special transport vehicle to be transported in air-supported membrane structure by contaminated soil, and air-supported membrane structure inlet/outlet adopts double-deck gas-tight door, and ensure that transport vehicle is when passing in and out air-supported membrane structure, aerated film inner and outer air pressure difference keeps stable.Soil after reparation can be used for landfill make etc.
Case study on implementation
Adopted by the contaminated soil temporarily stored special contaminated soil transport vehicle to transport air-supported membrane structure in batches, adopt turner to carry out forced disturbance to contaminated soil, the volatile organic matter in contaminated soil is evaporate in inflation awning.
When pollutant in air-supported membrane structure reaches finite concentration (namely dusty gas concentration exceedes the pollutant levels of regulation in " GBZ2.1-2007 workplace harmful factors occupational exposure limit chemical noxious factor "), the automatic control equipment of automatic control and checkout equipment (11) will open gas processing device automatically, dusty gas in salvage shop is by after exhaust treatment system, reach Beijing Ambient pollutant emission standard, be drained in air.
The soil qualified to Autonomous test transports air-supported membrane structure, imports to region to be detected, waits for the detection of third party and Environmental Protection Agency, the industrial ditch of qualified rear backfill.
Normal temperature analysis result testing and analyzing
Adopt chemical plant, this technical finesse Beijing containing 1, 2-dichloroethanes, chloroform, vinyl chloride, 1, 1, 2-trichloroethanes, trichloro-ethylene, tetrachloro-ethylene, carbon tetrachloride, 1, 1-dichloroethylene, benzene, 1, 1-dichloroethanes and 1, 1, 2, the organic contaminated soils 1,230,000 cubes such as 2-tetrachloroethanes, contaminated soil before and after resolving normal temperature carries out volatile organic matter 1, 2-dichloroethanes, chloroform, vinyl chloride, 1, 1, 2-trichloroethanes, trichloro-ethylene, tetrachloro-ethylene, carbon tetrachloride, 1, 1-dichloroethylene, benzene, 1, 1-dichloroethanes and 1, 1, 2, 2-tetrachloroethanes content analysis, partial analysis result is as follows:
Wherein, ND represents the undetected meaning within the detectability scope of detecting instrument, and the amount of pollutant that namely will detect is too little, beyond detection limit.Detection method is purge and trap/gas chromatography-mass spectrography, and testing conditions is injector temperature: 200 DEG C; Carrier gas: helium; Split ratio: 30:1; Post flow: 1.5ml/min, a sample pre-treatments needs 30min, and upper machine testing needs 40min.
The soil in chemical plant, table 1 Beijing uses the analysis result before and after contaminated soil disposal methods of the present invention
Claims (8)
1. the treatment system of a contaminated soil, it is characterized in that, comprise: air-supported membrane structure (1), one end of described air-supported membrane structure (1) is connected with control pressurer system (2) by pipeline (3), one end of described air-supported membrane structure (1) is also connected with ventilation blower (4) by pipeline (12), the other end of described air-supported membrane structure (1) has automatic control and checkout equipment (11) by connection, the other end of described air-supported membrane structure (1) is also connected with gas processing device by collection conduit (6), described gas processing device comprises the sack cleaner (7) of coagulation and the charcoal absorption case (9) of two stage treatment, be connected by exhaust blower (8) between described sack cleaner (7) and described charcoal absorption case (9), aiutage (10) is connected with after described charcoal absorption case (9), described air-supported membrane structure (1) is also provided with import-export system (5), described automatic control and checkout equipment (11) carry out real time on-line monitoring for the concentration levels of the VOC produced described air-supported membrane structure (1), and automatically control according to detection data, when detecting data and exceeding national requirements, described ventilation blower (4) opened by described automatic control and checkout equipment (11), described exhaust blower (8), described sack cleaner (7) and described charcoal absorption case (9), ventilation process is carried out to described air-supported membrane structure (1) inside, the internal gas of described air-supported membrane structure (1) is made to meet national requirements,
Wherein, described control pressurer system (2) comprises pressure sensor, PLC control appliance and air blast;
Described pressure sensor is for detecting the internal pressure of described air-supported membrane structure;
The internal pressure that described PLC control appliance is used for the described air-supported membrane structure detected according to described pressure sensor controls unlatching or the closedown of air blast;
Described air blast is used for the inner blower to described air-supported membrane structure;
Wherein, when described pressure sensor detects that described air-supported membrane structure internal pressure is less than the default low pressure limit of described PLC control appliance, described PLC control appliance assigns open command to described air blast, described air blast is opened and to the inner blower of described air-supported membrane structure, described air-supported membrane structure internal pressure is increased; When described pressure sensor detects that described air-supported membrane structure internal pressure is greater than the default upper pressure limit of described PLC control appliance, described PLC control appliance assigns shutdown command to described air blast, described air blast cuts out and stops the inner blower to described air-supported membrane structure, the internal pressure of described air-supported membrane structure is reduced, so just, the pressure of described air-supported membrane structure can be made to maintain between the default upper pressure limit of described PLC control appliance and low pressure limit, make described air-supported membrane structure maintain certain shape and 0.2KN/m
2~ 0.4KN/m
2rigidity;
Described import-export system (5) comprises the double-deck gas-tight door of vehicles while passing, personnel pass in and out double-deck gas-tight door and safe escape door.
2. the treatment system of contaminated soil as claimed in claim 1, is characterized in that, keep the pressure differential of 200 ~ 300Pa between the inside of described air-supported membrane structure (1) and the environment in the external world.
3. the treatment system of contaminated soil as claimed in claim 1, is characterized in that, described air-supported membrane structure maintains circular or oval shape.
4. the treatment system of contaminated soil as claimed in claim 1, it is characterized in that, the anti-snow load of described air-supported membrane structure (1) is not less than 30Kg/m
2, the wind loading rating of described air-supported membrane structure (1) is not less than 300N/m
2.
5. the treatment system of contaminated soil as claimed in claim 1, it is characterized in that, when described automatic control and checkout equipment (11) open ventilation blower (4) and exhaust blower (8), the intake of described ventilation blower (4) is the same with the air output of described exhaust blower (8).
6. a processing method for the contaminated soil using the treatment system of the contaminated soil as described in any one of claim 1 to 5 to carry out, is characterized in that, comprising:
Step a: contaminated soil is transferred in airtight air-supported membrane structure (1);
Step b: throwing is turned over to described contaminated soil and makes described contaminated soil be broken up and pulverize, thus accelerate the volatilization of organic gas in described contaminated soil;
Step c: the organic gas after volatilization is in an organized way disposed in sack cleaner (7) by collection conduit (6);
Steps d: the organic gas after described sack cleaner (7) process enters charcoal absorption case (9) by exhaust blower (8), and the gas after process enters air through aiutage (10).
7. the processing method of contaminated soil as claimed in claim 6, it is characterized in that, described air-supported membrane structure (1) is connected with control pressurer system (2) by pipeline (3), before step a, under the effect of described control pressurer system (2), the inside of described air-supported membrane structure (1) is inflated, makes the pressure differential keeping 200 ~ 300Pa between the inside of described air-supported membrane structure (1) and the environment in the external world.
8. the processing method of contaminated soil as claimed in claim 6, is characterized in that, use electrically driven (operated) turner to turn over throwing by the walking on the predetermined trajectory on ground to described contaminated soil in described step b.
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| CN104858228A (en) * | 2015-04-20 | 2015-08-26 | 苏州经贸职业技术学院 | Contaminated soil geothermal greenhouse desorption system |
| CN105080952A (en) * | 2015-08-26 | 2015-11-25 | 张家港市三星净化设备制造有限公司 | Method used for processing waste gas in polluted soil |
| CN106111686B (en) * | 2016-06-29 | 2019-03-05 | 华中科技大学 | A kind of microwave catalysis restorative procedure of organic matter-heavy-metal composite pollution soil |
| CN107377602A (en) * | 2017-07-18 | 2017-11-24 | 中科鼎实环境工程股份有限公司 | Double membrane structure processing system for repairing organic polluted soil |
| CN109127703B (en) * | 2018-10-30 | 2020-05-08 | 中国矿业大学 | Contaminated soil in-situ remediation system and method |
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| JP2006255564A (en) * | 2005-03-16 | 2006-09-28 | Earth Kensetsu Consultant Kk | Method for decontaminating organic sludge and contaminated soil by utilizing photocatalyst |
| CN200985313Y (en) * | 2006-08-11 | 2007-12-05 | 四川省农业机械研究设计院 | Mobile turnover throwing machine |
| JP4697671B2 (en) * | 2007-06-04 | 2011-06-08 | 株式会社大林組 | Hazardous substance separation and removal equipment |
| CN201141158Y (en) * | 2007-12-25 | 2008-10-29 | 华益兰馨(北京)环境科技有限公司 | Air support type air flow organization film structure of rubbish sanitation imbedding field operational area |
| CN101468356B (en) * | 2007-12-25 | 2011-05-18 | 华益兰馨(北京)环境科技有限公司 | Malodorous gas processing system for sanitary landfill yard |
| CN102513343B (en) * | 2011-12-31 | 2013-09-18 | 北京鼎实环境工程有限公司 | Treatment system for repairing organics-contaminated soil |
| CN203034877U (en) * | 2013-01-17 | 2013-07-03 | 华益兰馨(北京)环境科技有限公司 | Air-supported membrane structure warehouse used for contaminated soil storage |
| CN103086776A (en) * | 2013-02-28 | 2013-05-08 | 宿迁沃绿宝有机农业开发有限公司 | Full-automatic walking type turner |
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