CN103864263B - A kind of circulation well system for removing volatile organic matter in underground water - Google Patents
A kind of circulation well system for removing volatile organic matter in underground water Download PDFInfo
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- CN103864263B CN103864263B CN201410052490.XA CN201410052490A CN103864263B CN 103864263 B CN103864263 B CN 103864263B CN 201410052490 A CN201410052490 A CN 201410052490A CN 103864263 B CN103864263 B CN 103864263B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000005416 organic matter Substances 0.000 title claims abstract description 14
- 238000000605 extraction Methods 0.000 claims abstract description 57
- 238000005273 aeration Methods 0.000 claims abstract description 25
- 239000003814 drug Substances 0.000 claims abstract description 23
- 239000002250 absorbent Substances 0.000 claims abstract description 17
- 239000003610 charcoal Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 16
- 239000002349 well water Substances 0.000 claims abstract description 16
- 235000020681 well water Nutrition 0.000 claims abstract description 16
- 230000002745 absorbent Effects 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000003673 groundwater Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000011109 contamination Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The present invention relates to a kind of circulation well system for removing volatile organic matter in underground water, its object is to provide a kind of circulation well system being suitable for soil type, this system efficiently solves the problem of waterpower transmission power loss, soil permeability difference, avoid the phenomenon of the air flow shortcircuit caused owing to injection pressure is excessive, can effectively improving the radius of influence, repairing effect is remarkable simultaneously. System of the present invention comprises Wai Jing, Nei Jing, gas injection system, gas extraction system and medicament sprinkling system, described interior well is placed in described outer well, described gas injection system is for leading to into gas aeration to described interior well well water, discharged through absorbent charcoal adsorber absorption after described gas extraction system extracting doped with a described gas part for organic pollutants after aeration, another part enters described outer well, and described medicament sprinkling system is used in described outer well to spray pouring liquid.
Description
Technical field
The present invention relates to the based technique for in-situ remediation field belonging to underground water and soil, particularly relate to a kind of circulation well system for removing volatile organic matter in underground water.
Background technology
Along with the development of urbanization process, many chemical industry, agricultural chemicals enterprise start resettlement, and after resettlement, the soil and groundwater in genuine district receives pollution in various degree, it is necessary to could be used for commercial land, house or other construction after reparation. Pollutent in soil and groundwater particularly organic pollutant have that content is low, kind is many, difficult administer, endanger the features such as big. Wherein many organic pollutants not only cause abnormal, carcinogenic, mutagenesis, moreover it is possible to enter into ambient atmosphere environment by volatilization, seriously endanger the healthy of people and orthobiosis.
At present for the groundwater remediation in volatility organic contamination place, widely used is AS(original position air aeration) technology. AS technology injects air directly to the saturation zone of soil, and required injection pressure must overcome injects the some static pressure of underground water and the pressure of soil capillary, could form air-flow passage, and easily cause air flow shortcircuit. The repairing effect of AS technology also has very big relation with soil type, is not suitable for the place of soil permeability poor (such as clay).
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind of is applicable to the circulation well system from sand to clay soil type directly to injecting gas underground water, efficiently solve the problem of waterpower transmission power loss, soil permeability difference, avoid the phenomenon of the air flow shortcircuit caused owing to injection pressure is excessive, can effectively improving the radius of influence, repairing effect is circulation well system significantly simultaneously.
For reaching above-mentioned purpose, a kind of circulation well system for removing volatile organic matter in underground water of the present invention, described system comprises outer well, interior well, gas injection system, gas extraction system and medicament sprinkling system, described interior well is placed in described outer well, described gas injection system is for leading to into gas aeration to described interior well well water, discharged through absorbent charcoal adsorber absorption after described gas extraction system extracting doped with a described gas part for organic pollutants after aeration, another part enters described outer well, described medicament sprinkling system is used in described outer well to spray pouring liquid.
The wherein said interior well borehole wall there are upper strata screen casing and lower floor's screen casing so that water body circulation in described interior well and described outer well, screen casing bottom, described upper strata is lower than the well water water surface.
Filling gravel between described Nei Jing and outer well near wherein said upper strata screen casing and described lower floor screen casing, between described upper strata screen casing and described lower floor screen casing, fill concrete is between described Nei Jing and outer well.
Wherein gas injection system comprises pneumatic pump, valve and aeration tube, and described aeration tube one end connects described pneumatic pump through described valve, and well in the other end insertion is also placed in screen casing place of described lower floor.
Wherein said aeration tube head is provided with aeration head, for uniform aeration.
Wherein said gas extraction system comprises extraction pump, valve and extraction pipe, described absorbent charcoal adsorber is led to after being connected with described extraction pump by described valve in described extraction pipe one end, well in the other end insertion is also placed on well water face, and described interior well well head is closed and arranged.
Wherein said medicament sprinkling system comprises killer injecting pump, valve and medicine-pouring pipe, and described medicine-pouring pipe one end is connected with described killer injecting pump through described valve, and the other end described outer well of insertion is also placed on well water face, and described outer well wellhead sealing is arranged.
Wherein also comprising the medicament spray shower pipe being positioned at outer well, described medicament spray shower pipe is connected with medicine spraying tube in described outer well and is placed on well water face.
Wherein also comprise the gas extraction well system being positioned near described circulation well, described gas extraction well system comprises extraction well, extraction tube, extraction pump and absorbent charcoal adsorber, described extraction tube one end connects described extraction pump, the other end is placed in described extraction well, and described extraction pump connects described absorbent charcoal adsorber.
Wherein said interior well is UPVC pipe or stainless steel tube.
The present invention compared with prior art achieves following technique effect:
The present invention provides a kind of and is applicable to the circulation well system from sand to clay soil type directly to injecting gas underground water, efficiently solve the problem of waterpower transmission power loss, soil permeability difference, avoid the phenomenon of the air flow shortcircuit caused owing to injection pressure is excessive, can effectively improving the radius of influence, repairing effect is circulation well system significantly simultaneously; Increase medicament sprinkling system, the process effect of circulation well system can be strengthened; Bound gas extraction well system, achieves soil saturation band and the removal of unsatalation zone volatility organic contamination simultaneously.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 the present invention circulates well apparatus structure schematic diagram;
The piping diagram of Fig. 2 medicament spray shower pipe.
Description of reference numerals: 1-lower floor screen casing; 2-upper strata screen casing; 3-groundwater velocity instrument; 4-pneumatic pump; 5-aeration head; 6-absorbent charcoal adsorber; 7-pharmacy jar; 8-medicament spray shower pipe; 9-aeration tube; 10-extraction pump; 11-killer injecting pump; The outer well of 12-; Well in 13-; 14-valve; 15-valve; 16-valve; 17-medicine-pouring pipe; 18-concrete; 19-gravel; 20-extraction pipe; 21-gas extraction well; 22-extraction pump; 23-absorbent charcoal adsorber; 24-unsatalation zone; 25-ground water table; 26-saturation zone.
Embodiment
Below in conjunction with drawings and Examples, to above-mentioned being described in more detail with other technology feature and advantage of the present invention.
As shown in Figure 1, beat the outer well 12 of a bite, make the shaft bottom of outer well 12 be positioned at organism to be repaired and repair saturation zone, afterwards the interior well 13 of stainless steel is placed in outer well 12, interior well 13 shaft bottom is a little more than outer well 12 shaft bottom, interior well 13 bottom is closed, it is around lower floor's screen casing 1, it is lower floor's screen casing 2 that top is positioned at organism reparation unsatalation zone place, lower floor's screen casing 2 bottom is not less than the well water water surface, upper strata screen casing 2 is set and lower floor's screen casing 1 makes interior well 13 and the circulation of outer well 12 well water, upper strata screen casing 2 and lower floor's screen casing 1 side gravel 19 are filled between interior well 13 and outer well 12 (being keep interior well 13 to circulate with the well water of outer well 12 without the object of concrete 18), it is filled between interior well 13 and outer well 12 between upper strata screen casing 2 and lower floor's screen casing 1 with concrete 18, to realize the fixing of interior well 13. aeration tube 9 one end of gas injection system connects pneumatic pump 4 through valve 14, and the other end is with aeration head 5, and aeration head 5 inserts interior well 13 and is placed in screen casing 1 place of described lower floor, absorbent charcoal adsorber 6 is led to after being connected with extraction pump 10 by valve 15 in extraction pipe 20 one end of gas extraction system, well 13 in the other end insertion is also placed on well water face, interior well 13 well head is closed and arranges, medicine-pouring pipe 17 one end of medicament sprinkling system is connected with 11 killer injecting pumps through valve 16, the other end is provided with medicament spray shower pipe 8, medicament spray shower pipe 8 is inserted outer well 12 and is placed on well water face, outer well 12 wellhead sealing is arranged, arrange flatly or many gas extraction well system apart from described circulation well system 3��10m place, described gas extraction well system extraction tube one end connects extraction pump 22, the other end is placed in extraction well 21, extraction pump 22 connects absorbent charcoal adsorber 23.
When using this system to repair, open valve 14, the mixed gas of air or ozone and air is injected to lower floor's screen casing 1 place of aeration tube 9 by aeration tube 9 in pneumatic pump 4, interior well 13 and aeration head 5, producing a large amount of bubble in well, the ground water table caused in lower floor's screen casing 1 place well in underground water decrease in density and upper strata screen casing 2 place well raises; The underground water at lower floor's screen casing 1 place enters in well by lower floor's screen casing 1, and the underground water being rich in gas flows out outside well by upper strata screen casing 2, and bubble forms upstream in interior well 13, and in uphill process, the pollutent in underground water is caught or is oxidized; The rate of injection of control pneumatic pump 4 is at 55��105m3/h��
The underground water being rich in gas realizes gas-liquid separator at upper strata screen casing 2 place, and part gas by extraction pump 10 and carries out collecting and processing through absorbent charcoal adsorber 6, and another part gas enters soil unsatalation zone 24 through upper strata screen casing 2 and gravel 19.
While injecting gas, open valve 15, by extraction pump 10 with 1.6��2.5m3The mixed gas being rich in the organism evaporated is collected by the extracting speed of/h, and gas enters after absorbent charcoal adsorber 6 purifies through extraction pipe 20 and discharges, and is regularly changed by the gac in absorbent charcoal adsorber 6.
System cloud gray model is stable after 24 hours, is measured the flow velocity u of the circulating groundwater flowing out well body by groundwater velocity instrument 3, according to the area A of underground water volume V and upper strata screen casing in well, estimates the loop cycle T=V/Au of native system.
Open valve 16, drench oxygenant, microbiobacterial agent or nutritive substance etc. in the spray of upper strata screen casing 2 periphery, medicament through medicine-pouring pipe 17 enter medicament spray shower pipe 8 spray drench after flow to into well body surrounding environment along with circulating groundwater, residual contaminants is effectively removed; Determine the pharmaceutical quantities (Pollutant levels �� circulating water flow �� 2 loop cycle) sprayed according to organic concentration and recirculated water flow velocity, bolus volume is the volume of voids of 5%��50%, spray pressure 0��1MPa; Spraying frequency is spray once every a loop cycle; Not valve-off 16 during spraying agent.
The mixed gas of the air injected by gas injection system or ozone and air, a part is collected by extraction pump 10, and a part enters in unsatalation zone 24, promotes aerobic degradation and the oxygenolysis of the microorganism of organism in unsatalation zone 24; Gas extraction well 21 can be combined, with extraction pump 22, the organism evaporated in unsatalation zone 24 is collected, discharge after absorbent charcoal adsorber 23 purifies, control gas extracting speed 10��100m3/ h, repairs the organic contamination of saturation zone 26 and unsatalation zone 24 simultaneously.
Adopt said apparatus to be repaired by polluted underground water, mainly comprise the following steps:
1) beat flatly with cocycle well at Polluted area, below well depth to source of pollution (namely lower floor's screen casing 1 is placed near saturation zone, and upper strata screen casing 2 is placed near unsatalation zone);
2) beat the gas extraction well of more than a bite at the unsatalation zone of Same Site, the spacing of extraction well and circulation well is 3��10m;
3) starting aerator, start gas gathering system simultaneously, underground water flows into from lower floor's screen casing, and upper strata screen casing flows out, and the mixed gas part containing organic gas and air/ozone is collected, and another part enters into soil unsatalation zone;
4) recycle system stable after, by flowing out cycle of operation of groundwater velocity estimating system of well body;
5) extractor of gas extraction well is started, with 10��100m3The speed of/h to unsatalation zone evaporates and by upper strata screen casing enter unsatalation zone organism collect and process, prevent organism from evaporateing in ambient atmosphere;
6) medicament sprinkling system is started, oxygenant, microbiobacterial agent or nutritive substance is sprayed to upper strata screen casing periphery, the medicament sprayed is with groundwater flow diffusion mobility, the residual contaminants repaired in radius is removed, the process effect of consolidation system, spraying oxidating chemicals etc. can also carry out oxidation removal to the organism in the mixed gas flowing into unsatalation zone from upper strata screen casing thus reduce the organic gas entering unsatalation zone.
The circulation well system of the present invention, the underground environment remediation efficiency for organic contamination can reach more than 92%.
Above-described embodiment is only the preferred embodiment of the present invention be described; not the scope of the present invention is limited; under the prerequisite not departing from inventive design spirit; the various distortion that the technical scheme of the present invention is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention is determined.
Claims (9)
1. one kind for removing the circulation well system of volatile organic matter in underground water, it is characterized in that: described system comprises Wai Jing, Nei Jing, gas injection system, gas extraction system and medicament sprinkling system, described interior well is placed in described outer well, described gas injection system is for leading to into gas aeration to described interior well well water, discharged through absorbent charcoal adsorber absorption after described gas extraction system extracting doped with a described gas part for organic pollutants after aeration, another part enters described outer well, and described medicament sprinkling system is used in described outer well to spray pouring liquid; The described interior well borehole wall there are upper strata screen casing and lower floor's screen casing so that water body circulation in described interior well and described outer well, screen casing bottom, described upper strata is lower than the well water water surface.
2. the circulation well system for removing volatile organic matter in underground water according to claim 1, it is characterized in that: filling gravel between described Nei Jing and outer well near described upper strata screen casing and described lower floor screen casing, between described upper strata screen casing and described lower floor screen casing, fill concrete is between described Nei Jing and outer well.
3. the circulation well system for removing volatile organic matter in underground water according to claim 2, it is characterized in that: gas injection system comprises pneumatic pump, valve and aeration tube, described aeration tube one end connects described pneumatic pump through described valve, and well in the other end insertion is also placed in screen casing place of described lower floor.
4. the circulation well system for removing volatile organic matter in underground water according to claim 3, it is characterised in that: described aeration tube head is provided with aeration head, for uniform aeration.
5. the circulation well system for removing volatile organic matter in underground water according to claim 2, it is characterized in that: described gas extraction system comprises extraction pump, valve and extraction pipe, described absorbent charcoal adsorber is led to after being connected with described extraction pump by described valve in described extraction pipe one end, well in the other end insertion is also placed on well water face, and described interior well well head is closed and arranged.
6. the circulation well system for removing volatile organic matter in underground water according to claim 2, it is characterized in that: described medicament sprinkling system comprises killer injecting pump, valve and medicine-pouring pipe, described medicine-pouring pipe one end is connected with described killer injecting pump through described valve, the other end described outer well of insertion is also placed on well water face, and described outer well wellhead sealing is arranged.
7. the circulation well system for removing volatile organic matter in underground water according to claim 6, it is characterized in that: also comprising the medicament spray shower pipe being positioned at outer well, described medicament spray shower pipe is connected with the medicine-pouring pipe in described outer well and is placed on well water face.
8. the circulation well system for removing volatile organic matter in underground water according to claim 1, it is characterized in that: also comprise the gas extraction well system being positioned at described circulation well arrangement adjacent, described gas extraction well system comprises extraction well, extraction tube, extraction pump and absorbent charcoal adsorber, described extraction tube one end connects described extraction pump, the other end is placed in described extraction well, and described extraction pump connects described absorbent charcoal adsorber.
9. the circulation well system for removing volatile organic matter in underground water according to claim 1, it is characterised in that: described interior well is UPVC pipe or stainless steel tube.
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| CN201410052490.XA CN103864263B (en) | 2014-02-14 | 2014-02-14 | A kind of circulation well system for removing volatile organic matter in underground water |
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| CN201410052490.XA CN103864263B (en) | 2014-02-14 | 2014-02-14 | A kind of circulation well system for removing volatile organic matter in underground water |
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| CN103864263A CN103864263A (en) | 2014-06-18 |
| CN103864263B true CN103864263B (en) | 2016-06-01 |
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| CN102491603A (en) * | 2011-12-29 | 2012-06-13 | 北京市环境保护科学研究院 | Air injection system and method for in situ restoration of volatile pollutant in underground water |
| CN103043862A (en) * | 2012-12-30 | 2013-04-17 | 苏州唯盛环境修复科技有限公司 | Underground water pollution in-situ restoration device based on synchronous shattering and hydrodynamic circulating |
| CN103112915A (en) * | 2013-02-19 | 2013-05-22 | 江苏大地益源环境修复有限公司 | Circulation well method and device for removing pollutants in underground water |
| CN203715452U (en) * | 2014-02-14 | 2014-07-16 | 北京鼎实环境工程有限公司 | Circulation well system for removing volatile organic compound in underground water |
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