CN105215049B - Box-type complete soil underground water pollution two-phase extracts prosthetic device and application - Google Patents
Box-type complete soil underground water pollution two-phase extracts prosthetic device and application Download PDFInfo
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- CN105215049B CN105215049B CN201510582054.8A CN201510582054A CN105215049B CN 105215049 B CN105215049 B CN 105215049B CN 201510582054 A CN201510582054 A CN 201510582054A CN 105215049 B CN105215049 B CN 105215049B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/005—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Drying Of Gases (AREA)
Abstract
The technology of the present invention is a set of is integrated in TEU (Twenty-foot Equivalent Unit), box-type complete soil underground water pollution two-phase applied to Organic Pollution place extracts prosthetic device and application, including extracting and Separate System of Water-jet, tail gas humidity and temperature control system and exhaust treatment system.By way of vacuum extraction, underground contaminated underground water, the soil gas containing pollutant and water-insoluble freely phase are evacuated to ground by extraction well, then by inertia and Gravity Separation mode, realize the separation of gas water/free phase.The free phase recycling disposal of separation；Waste water discharges after ground installation is handled；After tail gas is controlled by temperature and humidity, discharged after charcoal absorption is handled.The present apparatus is readily transported transfer, can be quickly applied to recovery project；Exhaust temperature and humidity control system are mounted with, vent gas treatment load is significantly reduced and improves activated carbon treatment effeciency；Fresh water is not consumed in running, makes full use of the waste cold waste heat of system itself, energy-saving and emission-reduction.
Description
Technical field
The technology of the present invention be it is a set of be integrated in container, the box-type complete soil underground applied to Organic Pollution place
Water pollution two-phase extracts prosthetic device and application.
Background technology
With the continuous quickening of Urbanization in China, the resettlement of increasing industrial enterprise, carry over largely by
The place of the existing environmental risk of pollution, but place recycles demand big, and place redevelopment market scale drastically expands.Such as
These contaminated sites of fruit are not repaired, and the recycling in place may have human health risk, or even trigger serious consequence.This
Outside, due to the reasons such as level of industry, industrial technology condition, extensive environmental management and environmental illegality, a large amount of existing industry enterprises
Industry equally exists significant soil underground water pollution problem.For above contaminated site, it is necessary to by rational technological means come
Contaminated soil and groundwater in place is repaired, so as to effectively control the health and Ecological Environment Risk in place.
The technical standard of national in recent years and local associated contamination site management and the intensive appearance of policy, contaminated site reparation
Industrialization is in the ascendant.And the industrialization of repaired item is the important support that contaminated site repairs industrialization.Therefore, pollution is developed
Site remediation outfit turns into current focus.
Two-phase extraction technique is by the extraction well applying vacuum installed in underground, while to underground aeration zone and saturated zone
In soil gas, polluted underground water and water-insoluble free phase (if present) be stripped to more than ground, then through ground
Discharge or do after the treatment facility processing of face and dispose in next step.Two-phase extraction technique is a kind of soil underground water joint in-situ immobilization skill
Art, recovery project to place disturb it is smaller, its applicable target contaminant type include volatile organic contaminant, can biology
The half volatile organic contaminant of degraded and recyclable water-insoluble freedom are equal, and application is wide.It is domestic at present only few
The application case of two-phase extracting recovery technique is measured, commercial application is not formed and equips, the prosthetic device in application case is on the spot
Installation, to repair to finish and just remove, equipment can not easily transport transfer and recycle, and all in accordance with field during repair system design
The characteristic parameter on ground is carried out, and repaired item is difficult the place suitable for other different characteristic parameters.From it is cost-effective, avoid weight
From the point of view of multiple investment and quickening recovery project progress, a variety of different characteristic parameter places, convenience in transport can be applied to
The box-type complete two-phase extracting prosthetic device of transfer has very big demand prospect.Chinese patent CN201120475085.0 and
The prosthetic device of similar techniques is relate in CN201420621000.9, but above patent is not box-type complete prosthetic device,
Not readily transportable transfer；And without the secondary dehumidifying of extracting tail gas and temperature control system, follow-up vent gas treatment load is larger,
It is less efficient.
The content of the invention
The technology of the present invention solves problem：Overcome prior art can not fast transportation transfer, can not be repaiied in different contaminated sites
It is convenient in journey of returning to work to reuse, effectively be stripped the defects of exhaust temperature and humid control, there is provided one kind can industry
Change the box-type complete soil underground water pollution two-phase extracting prosthetic device of application, target contaminant type includes the organic dirt of volatility
Contaminate thing, biodegradable half volatile organic contaminant and recyclable water-insoluble free phase.
The technology of the present invention is achieved through the following technical solutions：A kind of box-type complete soil underground water pollution two-phase extracting is repaiied
Apparatus for coating, including the extracting connected by pipe part and circuit and Separate System of Water-jet, tail gas humidity and temperature control system
System, exhaust treatment system and electrical control cabinet, are integrated in a TEU (Twenty-foot Equivalent Unit).Extracting and Separate System of Water-jet bag
Include：Inertia-type gas-liquid separator, vacuum discharge opeing centrifugal pump, water-ring vacuum pump and gas-liquid separated cyclic water tank；Tail gas humidity
Include with temperature control system：Circular centrifugal pump, front end steam-water heat exchanger, condenser, rear end steam-water heat exchanger and 2 silicon
Glue desiccant canister；Exhaust treatment system includes：2 absorbent charcoal adsorption tanks and aiutage.Underground contaminated underground water, containing pollutant
Soil gas and it is water-insoluble freely mutually under suction function caused by water-ring vacuum pump, entered by extraction well and pipeline
Enter inertial gas-liquid separator and carry out gas-liquid separation, after freely mutually recyclable in the liquid phase isolated as needed recycling or
As dangerous waste disposal, the Polluted Groundwater (waste water) in liquid phase is pumped into front end carbonated drink heat by vacuum discharge opeing centrifugal pump and handed over
Parallel operation uses as cooling water, and small part waste water is as the gas-liquid separated cyclic water tank supporting with water-ring vacuum pump afterwards
Water is supplemented, most of waste water according to circumstances discharges after straight receiving tube discharge or support ground waste water disposal facility are handled.After dehydration
Gas be inhaled into first in water-ring vacuum pump pump chamber, enter back into gas-liquid separated cyclic water tank and carry out second dehydration, pass through
Gas after second dehydration is successively after the cooling of front end steam-water heat exchanger and condenser condensation, and part high concentration is waved in gas
Hair property organic pollution can be retained down using the condensate liquid in the form of free phase after recovery and as needed recycling or as
Dangerous waste disposal, the recirculated water that gas enters in rear end steam-water heat exchanger, with gas-liquid separated cyclic water tank after condensation enter
Row heat exchange realizes gas reheating to enter back into silica gel desiccant canister after controlling tail gas relative humidity, and the gas after dehumidifying finally enters
Absorbent charcoal adsorption tank, discharged after charcoal absorption is handled by aiutage.Whole system is run by electrical control cabinet
Automatically control.
The technology of the present invention has the following advantages compared with currently available technology：
(1)：The technology of the present invention armamentarium is integrated in a TEU (Twenty-foot Equivalent Unit), is readily transported transfer, is easy in difference
Reparation reuses between place, can avoid overlapping investment, accelerates recovery project progress；
(2)：The technology of the present invention is mounted with exhaust temperature and humidity control system, first by way of cooling down and condensing,
Part high concentration volatile organic matter in tail gas is condensed into recycling disposal after liquid, significantly reduces follow-up vent gas treatment load,
Heated again by heat exchange, by exhaust temperature reheating to reduce tail gas relative humidity so that treatment effeciency of the activated carbon to tail gas
It is optimal；
(3) present invention improves over tail gas humidity control system, on the basis of gas-liquid separation dehumidifying, add silica gel absorption and remove
Wet device, can be further assured that effect on moisture extraction, prevent that tail gas humidity is excessive, influence consequent activities charcoal treatment effeciency.
(4) the technology of the present invention design takes into full account energy-saving and emission-reduction.The recirculated water of water-ring vacuum pump and front end carbonated drink heat are handed over
The cooling water of parallel operation, it is all from the waste water of system extracting；Rear end steam-water heat exchanger is using in gas-liquid separated cyclic water tank
Recirculated water is as heat-exchange fluid.Whole system need not additionally supplement fresh water, and make full use of the waste cold of system itself
Waste heat, reduce energy consumption.
Brief description of the drawings
Fig. 1 is box-type complete soil underground water pollution two-phase extracting prosthetic device process chart
Fig. 2 is box-type complete soil underground water pollution two-phase extracting prosthetic device system schematic
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 2 all devices of the present invention are installed in the standard packaging that size is 12.03m × 2.35m × 2.38m
In case 1, including extracting and Separate System of Water-jet, tail gas humidity and temperature control system, exhaust treatment system, and electrical control
Cabinet 13.Each several part is connected by pipe part and circuit.Extracting and Separate System of Water-jet include：Inertia-type gas-liquid separator 2,
Vacuum discharge opeing centrifugal pump 3, water-ring vacuum pump 4 and gas-liquid separated cyclic water tank 5；Tail gas humidity and temperature control system bag
Include：Circular centrifugal pump 6, front end steam-water heat exchanger 7, condenser 8, rear end steam-water heat exchanger 9 and 2 silica gel desiccant canisters 10；
Exhaust treatment system includes：2 absorbent charcoal adsorption tanks 11 (a preparation and a use) and aiutage 12.
As shown in figure 1, Polluted Groundwater and soil gas containing pollutant are in negative pressure caused by water-ring vacuum pump 4
Under effect, inertia-type gas-liquid separator 2 is entered by extraction well and pipe-line system and carries out gas-liquid separation, isolate contaminatedly
Lower water is pumped into front end steam-water heat exchanger 7 by vacuum discharge opeing centrifugal pump 3 and is used as cooling water, a small amount of water conduct after heat exchange
The supplement water of supporting gas-liquid separated cyclic water tank 5 with water-ring vacuum pump 4, most of straight receiving tube discharge of water.After dehydration
Gas be inhaled into first in the pump chamber of water-ring vacuum pump 4, enter back into gas-liquid separated cyclic water tank 5 and carry out second dehydration, warp
The gas after second dehydration is crossed successively after the cooling of front end steam-water heat exchanger 7 and condenser 8 condense, part is highly concentrated in gas
Degree volatile organic contaminant can be retained down in the form of condensate liquid, and dangerous waste disposal is used as after regathering.Gas after condensation
Body enters the reheating of rear end steam-water heat exchanger 9, keeps gas temperature to enter back into silica gel desiccant canister 10, further at 15 DEG C or so
Gas after dehumidifying finally enters absorbent charcoal adsorption tank 11, is discharged after charcoal absorption is handled by aiutage 12.
From the gas temperature by second dehydration of gas-liquid separated cyclic water tank 5 out at 50 DEG C or so, if without
If cooling is directly entered condenser 8, condenser working load is larger, and energy consumption is higher.Therefore, the technology of the present invention is in condenser 8
Front end is mounted with a front end steam-water heat exchanger 7, uses the extracting underground water of the lower temperature in inertia-type gas-liquid separator 2
(15 DEG C or so) are used as cooling water, are pumped directly into by vacuum discharge opeing centrifugal pump 3 in front end steam-water heat exchanger 7 and carry out hot friendship
Change, the temperature of gas can be reduced to 30 DEG C or so.Polluted underground water by heat exchange has two whereabouts by pipeline, all the way
System is expelled directly out, is used all the way towards steam-water separation formula cyclic water tank 5 as supplement water.Under regular situation, waste water is directly received
Pipe discharges；When steam-water separation formula cyclic water tank 5 needs moisturizing, can be closed by way of opening and closing Liquid level magnetic valve
Discharge of wastewater pipeline, open the moisturizing switch of steam-water separation formula cyclic water tank 5 and carry out moisturizing, pass through Liquid level after moisturizing again
Device reduces valve.
The gas cooled down by front end steam-water heat exchanger 7 subsequently enters condenser 8, and condenser running temperature is on 4 DEG C of left sides
The right side, part high concentration volatile organic contaminant can be retained down in the form of condensate liquid, reduce follow-up vent gas treatment load.
The condensate liquid of condenser 8 is periodically discharged by outlet at bottom by fluid level control valve.
The gas temperature come out from condenser 8 is relatively low (5~10 DEG C), and relative humidity is very big (close to 100%), higher
Relative humidity can significantly reduce treatment effeciency of the activated carbon to tail gas.The technology of the present invention adds one in the rear end of condenser 8
Rear end steam-water heat exchanger 9, by circular centrifugal pump 6 by higher temperature (40 DEG C or so) in gas-liquid separated cyclic water tank 5
Recirculated water is delivered to rear end steam-water heat exchanger 9 and carries out heat exchange.After heat exchange, gas temperature reheating rises to 15 DEG C of left sides
The right side, recirculated water then continue to be back in gas-liquid separated cyclic water tank 5.Gas by reheating subsequently enters silica gel desiccant canister 10
Secondary dehumidifying is carried out, keeps relative humidity to enter absorbent charcoal adsorption tank 11 within 20%, passes through after charcoal absorption is handled
Aiutage 12 discharges.The technology of the present invention installs 2 sets of silica gel desiccant canisters and 2 sets of absorbent charcoal adsorption tanks 11 respectively, is a preparation and a use.
The present invention controls the operation of whole system by the electrical control cabinet 13 being arranged in TEU (Twenty-foot Equivalent Unit).Electrical control
Total power switch is set in cabinet, the multiple controlling switches of peripheral hardware, controls vaccum centrifugal pump 3, circular centrifugal pump 6 and liquid-ring type vacuum respectively
The discharge opeing of the emission direction and condenser 8 of polluted underground water after the operation of pump 4 and front end steam-water heat exchanger 7 exchange heat.Control
System is provided with PLC full-automatic control systems and touch operation screen, shows and controls provided with various times, temperature, humidity and liquid level
Unit processed, there is the function such as data input and output, the automation continuous and steady operation of realization device, and operational factor is just
Ground is shown and data output function.
Box-type complete soil underground water pollution two-phase extracting prosthetic device is applied to the underground water in certain organic contamination place
Recovery project, contaminated sites thing include petroleum hydrocarbon, ethylbenzene, 1,2,4- trimethylbenzenes, contaminated area about 1500m2, and pollution depth is
5m.Reparation is stripped to 70 De40mm of Polluted area UPVC extraction wells using the device.During system operation, extracting
Vacuum individual well extracting water about 0.35m3/h, extracts tolerance about 10m3/h, entirely repaiied between -0.02Mpa~-0.04Mpa
The total extraction stain groundwater run offs of the Cheng that returns to work are about 480m3, and total tolerance that extracts is about 68,000m3.Transported by the repair systems of 90 days
OK, restoring area groundwater sampling monitoring result shows, pollutant concentration reaches in underground water in all monitoring wells in the region
The reparation target of setting early stage.The preprosthetic concentration of each pollutant, the reparations desired value of setting and the sampling after repairing are supervised
It is as shown in the table to survey result：
Claims (2)
1. a kind of box-type complete soil underground water pollution two-phase extracts prosthetic device, it is characterised in that：Including passing through pipe part
And circuit connection extracting and Separate System of Water-jet, tail gas humidity and temperature control system, exhaust treatment system and electrically
Switch board (13), it is integrated in a TEU (Twenty-foot Equivalent Unit) (1), extracting and Separate System of Water-jet include：Inertia-type gas-liquid separation
Device (2), vacuum discharge opeing centrifugal pump (3), water-ring vacuum pump (4) and gas-liquid separated cyclic water tank (5)；Tail gas humidity and temperature
Control system includes：Circular centrifugal pump (6), front end steam-water heat exchanger (7), condenser (8), rear end steam-water heat exchanger (9)
With 2 silica gel desiccant canisters (10)；Exhaust treatment system includes：2 absorbent charcoal adsorption tanks (11) and aiutage (12)；The dirt of underground
Underground water, gas containing contaminated soil and water-insoluble freely phase are contaminated under suction function caused by water-ring vacuum pump (4),
Extracted out together by extraction well and carry out gas-liquid separation into inertia-type gas-liquid separator (2), in the liquid phase isolated from
By phase material reclaim after dispose, the waste water in liquid phase uses as the cooling water of tail gas humidity and temperature control system, by with
For the tail gas of water-ring vacuum pump (4) discharge after front end steam-water heat exchanger (7) heat exchange, a part is used as water ring vacuum pump
(4) circulating water system, a part receive pipe discharge or discharged after ground processing facility is handled；Gas after dehydration passes through water ring
Formula vavuum pump (4) enters gas-liquid separated cyclic water tank (5) second dehydration, is exchanged heat afterwards by front end steam-water heat exchanger (7)
Cooling and condenser (8) condensation remove part high concentration volatile organic matter, then by rear end steam-water heat exchanger (9) and gas-liquid
Recirculated water in separate type cyclic water tank (5) carries out heat exchange and realizes gas reheating, so as to enter again after controlling tail gas relative humidity
Enter silica gel desiccant canister (10) further control exhaust temperature and humidity, discharged after finally entering absorbent charcoal adsorption tank (11) processing.
2. box-type complete soil underground water pollution two-phase according to claim 1 extracts prosthetic device, it is characterised in that water
The recirculated water of ring vacuum pumps (4) and the cooling water of front end steam-water heat exchanger (7), be all from system extracting impurely under
Water；Rear end steam-water heat exchanger (9) is used as heat-exchange fluid by the use of the recirculated water in gas-liquid separated cyclic water tank (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510582054.8A CN105215049B (en) | 2015-09-14 | 2015-09-14 | Box-type complete soil underground water pollution two-phase extracts prosthetic device and application |
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| CN201510582054.8A CN105215049B (en) | 2015-09-14 | 2015-09-14 | Box-type complete soil underground water pollution two-phase extracts prosthetic device and application |
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| CN105215049A CN105215049A (en) | 2016-01-06 |
| CN105215049B true CN105215049B (en) | 2017-11-21 |
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| CN107055877B (en) * | 2017-06-02 | 2020-03-31 | 清华大学 | Mobile emergency treatment organic pollution underground water modularization device |
| CN107159699A (en) * | 2017-06-16 | 2017-09-15 | 江苏盖亚环境科技股份有限公司 | Gas phase extracts the container-like structure of unitary module smart machine |
| CN107138513A (en) * | 2017-06-16 | 2017-09-08 | 江苏盖亚环境科技股份有限公司 | A kind of gas phase extracts cooling system |
| CN107350278B (en) * | 2017-07-18 | 2020-06-26 | 中国地质大学（武汉） | In-situ remediation system and method for cooperatively removing organic pollutants in soil and underground water |
| CN107552554A (en) * | 2017-09-26 | 2018-01-09 | 上海格林曼环境技术有限公司 | Extracting condensation and Separate System of Water-jet for the thermal desorption reparation of contaminated site original position |
| CN110255754A (en) * | 2019-05-22 | 2019-09-20 | 中节能大地环境修复有限公司 | A kind of restorative procedure of high concentration organic contamination underground water |
| CN110665952A (en) * | 2019-10-29 | 2020-01-10 | 中冶南方都市环保工程技术股份有限公司 | Energy-saving type organic contaminated soil in-situ thermal desorption remediation system and method |
| CN112620325A (en) * | 2020-11-30 | 2021-04-09 | 中冶南方都市环保工程技术股份有限公司 | System and method for heat-enhanced multiphase extraction aiming at aquifer NAPL pollution |
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