CN206184910U - Polluted soil earth gaseous phase is extracted and is made up processing system with biological filter tower - Google Patents
Polluted soil earth gaseous phase is extracted and is made up processing system with biological filter tower Download PDFInfo
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- CN206184910U CN206184910U CN201621143119.5U CN201621143119U CN206184910U CN 206184910 U CN206184910 U CN 206184910U CN 201621143119 U CN201621143119 U CN 201621143119U CN 206184910 U CN206184910 U CN 206184910U
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- biological filtering
- combined working
- filtering tower
- tower combined
- gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a polluted soil earth gaseous phase is extracted and is made up processing system with biological filter tower belongs to the soil field of restoreing. Add jar, fluidflowmeter including circulating pump, nutrients to and well, butterfly valve, vapour and liquid separator, ball valve, dust remover, flowmeter, vacuum meter, relief valve, draught fan and biological filter tower are extracted to the normal position that loops through the pipe connection. The utility model discloses utilize biological filter tower handle to extract tail gas, organic pollutant in the simultaneous processing tail gas of moisture has simplified process flow in separation gas, update the technology that traditional active carbon adsorption handled tail gas, saved the active carbon use amount, reduced the running cost.
Description
Technical field
The utility model is a kind of contaminated soil gas phase extracting and biological filtering tower combined working composite processing system, belongs to soil remediation neck
Domain.
Background technology
With the implementation of the policy such as national " move back two and enter three ", " Tui Chengjin gardens ", " industry transfer ", national big and medium-sized cities are permitted
Many chemical plant, insecticide factory, steel plant, metal smelt, plating and machining Chang Denggao contaminating enterprises will progressively be closed down and be changed the line of production
Or resettlement, leave the contaminated site that a large amount of types are various, characteristic is complicated.These industrial pollution places to Soil Surrounding and
Underground water is polluted.In-situ immobilization due to without carrying out excavation treatment to contaminated site, more and more being applied.
Gas phase extraction technique in situ is to utilize exterior power, and soil air forces olderly flowage in ordering about Polluted area, will
Gas-phase volatile organic compounds (Volatile Organic Compounds, VOCs) and semi-volatile organic matter (Semi-
Volatile Organic Compounds, SVOCs) extracted to the exhaust gas purification system for being arranged on earth's surface, carry out unifying to receive
Collection and disposal.The technology can be used for the reparation of the VOCs-contaminated Soils such as chlorohydrocarbon, benzene homologues, external contaminated soil and
The existing more practical engineering application in groundwater remediation field.
At present, the research work both at home and abroad for gas phase extraction technique focuses primarily upon the fortune of fluid in gas phase extractive process
Shifting, pollutant mass transfer and processing simulation.The tail gas for extracting and collecting from extraction well in traditional gas extraction system, through gas-liquid point
From rear tail gas it is up to standard through the treatment such as charcoal absorption after discharge, the waste water of separation then enters sewage treatment facility, and technological process is multiple
It is miscellaneous, and activated carbon replacing amount is big during longtime running, operating cost is higher.Therefore, for soil in-situ gas phase extraction technique, simplify
The processing technological flow of stripping gas, it is very must to set up permanently effective gas phase extracting with the combined treatment process of biological filtering tower combined working
Want.
The content of the invention
The purpose of this utility model is directed to the deficiencies in the prior art, there is provided a kind of soil vapor extraction and biological filtering tower combined working group
Close processing system.
The purpose of this utility model is achieved through the following technical solutions：A kind of contaminated soil gas phase extracting and biological filtering tower combined working group
Close processing system, including circulating pump, nutriment addition tank, fluid flowmeter, and pass sequentially through pipeline connection original position take out
Carry well, butterfly valve, gas-liquid separator, ball valve, deduster, flowmeter, vacuum meter, relief valve, air-introduced machine and biological filtering tower combined working；The life
Multiple packing layers in thing filter tower, biological filtering tower combined working upper end is provided with mouth spray and gas outlet, liquid distribution trough is provided with mouth spray；
Biological filtering tower combined working lower end is provided with air inlet and liquid outlet, and air-introduced machine is connected with the air inlet of biological filtering tower combined working lower end, liquid outlet, circulation
Pump, nutriment addition tank, fluid flowmeter, mouth spray pass sequentially through pipeline connection；Described filler layer by packing support plate, fill out
Material pressure network and the filler composition being fixed between packing support plate, filler pressure network；Packing support plate is provided with central through hole, through hole
Lower end is provided with liquid distribution trough.
Compared to prior art, the utility model has the advantage of：
1. using biological filtering tower combined working treatment extracting tail gas, the organic contamination in treatment tail gas while moisture in separating gas
Thing, simplifies technological process；
2. the technique that instead of conventional carbon adsorption treatment tail gas, saves activated carbon usage amount, reduces and runs into
This；
Brief description of the drawings
Fig. 1 is the extracting of contaminated soil gas phase and biological filtering tower combined working composite processing system total figure；
Fig. 2 is the distribution schematic diagram of the packing layer inside biological filtering tower combined working；
Fig. 3 is the structural representation of infundibulate packing layer；
Label in figure：1- original positions extraction well, 2- screen casings, 3- butterfly valves, 4- gas-liquid separators, 5- ball valves, 6- dedusters, 7- streams
Gauge, 8- vacuum meters, 9- relief valves, 10- air-introduced machines, 11- biological filtering tower combined workings, 12- circulating pumps, 13- nutriments addition tank, 14-
Fluid flowmeter, 15- liquid distribution troughs, 16- packing support plates, 17- filler pressure networks, 18- fillers.
Specific embodiment
In order to the technical characteristic to utility model, purpose and effect are more clearly understood from, now control illustrates this
The specific embodiment of utility model, in the various figures identical label represent that identical or structure is similar but function identical part.
To make simplified form, the part related to the utility model is only schematically show in each figure, they do not represent its work
It is the practical structures of product.In addition, to readily appreciate simplified form, the portion with identical structure or function in some figures
Part, only symbolically depicts one of those, or has only marked one of those.With reference to Figure of description and specifically
Embodiment, is described in detail to the utility model.
A kind of contaminated soil gas phase extracting and biological filtering tower combined working composite processing system, including the addition of circulating pump 12, nutriment
Tank 13, fluid flowmeter 14, and pass sequentially through pipeline connection extraction well in situ 1, butterfly valve 3, gas-liquid separator 4, ball valve 5,
Deduster 6, flowmeter 7, vacuum meter 8, relief valve 9, air-introduced machine 10 and biological filtering tower combined working 11；Multiple in the biological filtering tower combined working 11 is filled out
The bed of material, the upper end of biological filtering tower combined working 11 is provided with mouth spray, and liquid distribution trough 15 is provided with mouth spray；The lower end of biological filtering tower combined working 11 be provided with into
Gas port and liquid outlet, air-introduced machine 10 are connected with the air inlet of the lower end of biological filtering tower combined working 11, and liquid outlet, circulating pump 12, nutriment add
Plus tank 13, fluid flowmeter 14, mouth spray pass sequentially through pipeline connection；Described filler layer is by packing support plate 16, filler pressure network
17 and the filler 18 that is fixed between packing support plate, filler pressure network constitute；Packing support plate 16 is provided with central through hole, through hole
Place is provided with liquid distribution trough 15, as shown in Figure 2.
As shown in Fig. 2 described filler supporting plate 16 is in funnel structure, is conducive to spray liquid to flow under gravity and is located at
In this layer of liquid distribution trough of filler bottom 15.
Used as the common knowledge of this area, extraction well generally comprises the envelope around pipe cap, screen casing, well casing, connector and well
Filling chock material.The extracting well casing is pvc pipe, and the screen casing is the PVC slot pipes for stitching a width of 0.5~2.0mm, and the connector is
PVC materials, for connecting well casing and screen casing, the pipe cap is that PVC materials are used for closed injection well casing.The extracting well casing and ground
Sealing material between lower soil is respectively quartz sand, bentonite and cement from bottom to top, wherein from below the water level of underground about
Filled using quartz sand to shaft bottom at 0.5~1.0m, from the water level of underground at about 0.5~1.0m to below face about 0.5~
Filled using bentonite at 1.0m, cement seal is used at about 0.5~1.0m from earth's surface to underground water level.Work as Groundwater
When position is shallower, one layer of diaphragm seal is increased in the adjacent ground surface of extraction well.The diaphragm seal is preferably HDPE film.
The gas-liquid separator 4 is used for moisture in extraction gas, and preventing the water in gas phase from entering air-introduced machine influences system
System operation.Preferably deflection separator, cyclone separator and filler separator.The flowmeter 7 is used to measure stripping gas
Flow, preferably Pitot tube, spinner flowmeter, eddy currents flowmeter and electromagnetic flowmeter.The vacuum meter 8 is used to measure
Extracting well pressure.The relief valve 9 is used to lay down in pipeline from the unnecessary gases at high pressure after air-introduced machine compression.The air-introduced machine
10 are preferably whirlpool blower fan, by stripping gas from extraction well in situ 1 through gas-liquid separator 4, deduster 6, flowmeter 7, vacuum
Table 8 and relief valve 9 etc. guide the main exhaust treatment system being made up of biological filtering tower combined working 11 into.
The biological filtering tower combined working 11 is typically made up of carbon steel, stainless steel and ceramics etc., and the method for operation in biological filtering tower combined working 11 is
Gas-liquid counter current, extracting tail gas enters tower body by the air inlet of bottom of towe, from bottom to top through packing layer, is finally arranged from tower top gas outlet
Go out.Spray liquid by the liquid distribution trough 15 that is arranged at tower top mouth spray, in equably spraying the packing layer of most last layer,
Spray liquid is flowed downward along filler layer surface, and flow direction is arranged in this layer of liquid distribution trough of bottom 15, and then spray arrives next
In packing layer, until bottom of towe by liquid outlet discharge tower outside, then by circulating pump 12 send into nutriment addition tank 13 add corresponding agent
After the growth of microorganism needed nutrient matter (carbon source, nitrogen source and trace element needed for growth of microorganism) of amount, through fluid flow
Meter 14 is back to tower top, so moves in circles.The stripping gas of rising enter liquid phase by gas-liquid mass transfer, then by diffusion and right
Stream mass transport process is diffused into biomembrane, and then organic gas component therein is degraded by microorganisms, and discharge is reached during to tower top
It is required that after through aiutage discharge.Filler therein, including natural organic filler and inert inorganic filler.Natural organic filler includes
Compost, peat, wood chip etc.；Inert inorganic filler is including perlite, granular active carbon and ceramics, plastics, stainless steel etc..
The spray flux of the liquid distribution trough 15 at tower top can be entered according to pollutant concentration in stripping gas by flowmeter
Row regulation.
Embodiment 1
Hereafter by description of a preferred embodiment to the above-mentioned characteristic of the utility model, technical characteristic, advantage and its realization
Mode is further described, but the utility model not limited to this.
The major pollutants of certain chemical plant contaminated site are vinyl chloride, 1, the chlorohydrocarbon such as 1,2- trichloroethanes and chloroform, soil
Maximum contaminant level is respectively 8.56mg/kg, 28.6mg/kg and 4.06mg/kg in earth.The formation structure is divided from top to bottom
Wei not miscellaneous fill, sandy silt and silty clay.The screen casing depth of extraction well is set to 25~28m below earth's surface, below earth's surface
Filled using quartz sand between well casing and soil in the range of 24.5~25m, 24.5m below earth's surface to ground is filled out using bentonite
Fill, being added water in bentonite filling bottom carries out consolidation sealing.
Above-mentioned contaminated soil is processed with biological filtering tower combined working composite processing system using the extracting of contaminated soil gas phase, is processed
Volatile organic content in the gas of preceding extraction well exit is 750ppm.Air-introduced machine is opened to take out 1- original positions extraction well
Operation is proposed, extracting flow is 7.6~8.3m3/ h, the reachable -0.03MPa of extraction pressure.Volatile organic matter in the gas for being extracted
Content reaches 15000ppm, extraction well periphery spacing in the monitoring well exit gas of 3m volatile organic content up to 800~
900ppm.Stripping gas qualified discharge after the tail gas treatment process based on biological filtering tower combined working.
Below schematically the utility model creation and embodiments thereof are described, the description does not have restricted,
One of new implementation method is also simply originally applicable shown in accompanying drawing, actual structure is not limited thereto.So, if this
The those of ordinary skill in field is enlightened by it, in the case where this creation objective is not departed from, is designed and this without creative
The similar frame mode of technical scheme and embodiment, all should belong to the protection domain of this patent.
Claims (2)
1. a kind of contaminated soil gas phase is extracted and biological filtering tower combined working composite processing system, it is characterised in that including circulating pump (12), battalion
Support material add tank (13), fluid flowmeter (14), and pass sequentially through pipeline connection extraction well in situ (1), butterfly valve (3),
Gas-liquid separator (4), ball valve (5), deduster (6), flowmeter (7), vacuum meter (8), relief valve (9), air-introduced machine (10) and life
Thing filter tower (11)；Multiple packing layers in the biological filtering tower combined working (11), biological filtering tower combined working (11) upper end is provided with mouth spray and gas outlet,
Liquid distribution trough (15) is provided with mouth spray；Biological filtering tower combined working (11) lower end is provided with air inlet and liquid outlet, air-introduced machine (10) and
The air inlet of biological filtering tower combined working (11) lower end is connected, and liquid outlet, circulating pump (12), nutriment add tank (13), fluid flowmeter
(14), mouth spray passes sequentially through pipeline connection；Described filler layer is by packing support plate (16), filler pressure network (17) and is fixed on
Filler (18) composition between packing support plate (16), filler pressure network (17)；Packing support plate (16) is provided with central through hole, through hole
Lower end is provided with liquid distribution trough (15).
2. contaminated soil gas phase according to claim 1 is extracted and biological filtering tower combined working composite processing system, it is characterised in that institute
Packing support plate (16) is stated in funnel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143119.5U CN206184910U (en) | 2016-10-20 | 2016-10-20 | Polluted soil earth gaseous phase is extracted and is made up processing system with biological filter tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143119.5U CN206184910U (en) | 2016-10-20 | 2016-10-20 | Polluted soil earth gaseous phase is extracted and is made up processing system with biological filter tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206184910U true CN206184910U (en) | 2017-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621143119.5U Active CN206184910U (en) | 2016-10-20 | 2016-10-20 | Polluted soil earth gaseous phase is extracted and is made up processing system with biological filter tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206184910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433629A (en) * | 2019-07-26 | 2019-11-12 | 中科鼎实环境工程有限公司 | The intelligent exhaust gas processing device of energy conservation of organic pollutant |
| CN114467403A (en) * | 2021-12-29 | 2022-05-13 | 中节能大地环境修复有限公司 | Mountain greening method for quarry |
-
2016
- 2016-10-20 CN CN201621143119.5U patent/CN206184910U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433629A (en) * | 2019-07-26 | 2019-11-12 | 中科鼎实环境工程有限公司 | The intelligent exhaust gas processing device of energy conservation of organic pollutant |
| CN114467403A (en) * | 2021-12-29 | 2022-05-13 | 中节能大地环境修复有限公司 | Mountain greening method for quarry |
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