CN107540128A - The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material - Google Patents
The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material Download PDFInfo
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- CN107540128A CN107540128A CN201710945117.0A CN201710945117A CN107540128A CN 107540128 A CN107540128 A CN 107540128A CN 201710945117 A CN201710945117 A CN 201710945117A CN 107540128 A CN107540128 A CN 107540128A
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- heavy metal
- prb
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- underground water
- metal pollution
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- 239000000463 material Substances 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 24
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 20
- 238000012856 packing Methods 0.000 title claims abstract description 15
- 238000004088 simulation Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 235000019738 Limestone Nutrition 0.000 claims abstract description 32
- 239000006028 limestone Substances 0.000 claims abstract description 32
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010457 zeolite Substances 0.000 claims abstract description 27
- 239000002023 wood Substances 0.000 claims abstract description 24
- 229920005479 Lucite® Polymers 0.000 claims abstract description 21
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 21
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims description 16
- 230000003139 buffering effect Effects 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 12
- 230000004888 barrier function Effects 0.000 abstract description 6
- 239000011521 glass Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000003673 groundwater Substances 0.000 abstract description 2
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000011701 zinc Substances 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- -1 iron ion Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical group [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Abstract
The invention discloses the device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material, the experimental provision includes organic glass tube column, sump, collection bottle and peristaltic pump；The inside filling containing limestone serous of the lucite tubing string, the permeable reaction wood bed of material of zeroth order iron powder and natural zeolite, lime stone by experimental provision to different ratio, the mixing material of zeroth order iron powder and natural zeolite carries out heavy metal pollution water sample purification, the lime stone of optimum proportioning is selected by purification result, the mixing material of zeroth order iron powder and natural zeolite is filled in the permeable reactive barrier in groundwater treatment, solve the problems, such as low to the clearance of the Zn elements of more difficult removal, an application reference is provided for the selection of PRB fillers, so that the cycle length that PRB operation is lasting, operating cost substantially reduces, and it can efficiently remove the Zn elements for being difficult to remove and other heavy metal elements being easily removed.
Description
Technical field
The invention belongs to water pollution recovery technique field, and in particular to simulate PRB in-situ immobilization heavy metals containing packing material
The device of polluted underground water.
Background technology
There is serious lead zinc cadmium pollution phenomenon in many mining areas in recent years, and permeable reactive barrier is used in correlation technique
(abbreviation PRB) carries out the contaminated underground water of in-situ immobilization, is mainly zeroth order iron powder, mixes in the material of permeable reactive barrier filling
Close compost, lime stone, changed red mud, apatite etc..The material of filling is typically more single, it is impossible to is widely used in lead zinc cadmium
In groundwater remediation Deng heavy metal pollution.
The content of the invention
In view of this, the embodiment provides a kind of experiment dress for simulating in-situ immobilization heavy metal pollution underground water
Put, obtain the mixing material for filling permeable reactive barrier for testing, repairing for underground water heavy metal can be efficiently applied to extensively
It is multiple.
In order to solve the above technical problems, the embodiment provides containing a packing material simulation PRB in-situ immobilization huge sum of moneys
Belong to the device of polluted underground water, including organic glass tube column, sump, collection bottle and peristaltic pump；The lucite tubing string
Inside filling is 2~4 containing proportioning:0~4:The permeable reaction wood bed of material of 0~4 lime stone, zeroth order iron powder and natural zeolite,
The upper end of the lucite tubing string connects with the sump, and its lower end sets buffering cell；The sump and the collection
Water bottle connects, and the peristaltic pump connects the collection bottle and the permeable reaction wood bed of material, the rubber tube by rubber tube
One end connect the collection bottle, the other end is in the buffering cell.
Preferably, the volume ratio of the lime stone, zeroth order iron powder and natural zeolite is 2:1:4；The particle diameter of the lime stone
For 2mm~5mm, the particle diameter of the zeolite is 2mm~5mm, and the particle diameter of the zeroth order iron powder is less than 0.5mm.
Preferably, in addition to sand gravel layer, the sand gravel layer are located at the top of the permeable reaction wood bed of material respectively
And bottom, the thickness of the sand gravel layer is 50cm.
Preferably, in addition to porous filter plate, the porous filter plate are located at the gravel of the permeable reaction wood bed of material bottom
The lower section of rock layers.
Preferably, the internal diameter of the lucite tubing string is 80mm, length 700mm；The permeable reaction wood bed of material
Filling length be 500mm.
Preferably, two delivery ports are arranged at intervals on the cylinder of the lucite tubing string, the delivery port is provided with only
Water presss from both sides.
Compared with correlation technique, the beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：The present invention's contains
Packing material simulates the device of PRB in-situ immobilization heavy metal pollution underground water, including organic glass tube column, sump, collection bottle
And peristaltic pump；The heavy metal pollution water sample of laboratory preparation is held in sump, water sample is through the collection bottle, and peristaltic pump is by water sample
Extract to the permeable reaction wood bed of material inside the lucite tubing string, lime stone, zeroth order iron powder and day through inside filling
Discharged after right Zeolite-purification, take the water sample detection content of beary metal of discharge, then can select lime stone, the Zero-valent Iron of proper ratio
Powder and natural zeolite are filled in the permeable reactive barrier of underground water heavy metal in-situ immobilization；Experimental provision is simple, experimentation
It is easily operated.
Brief description of the drawings
Fig. 1 is the device signal of simulation in-situ immobilization heavy metal pollution underground water of the embodiment of the present invention containing packing material
Figure.
Wherein：Lucite tubing string 1, the permeable reaction wood bed of material 2, sand gravel layer 3, porous filter plate 4, buffering cell 5, dirt
Tank 6, collection bottle 7, peristaltic pump 8, rubber tube 9, delivery port 10.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is further described.
Referring to the drawings 1, the device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material, including organic glass
Glass tubing string 1, sump 6, collection bottle 7 and peristaltic pump 8；The inside filling proportioning of the lucite tubing string 1 is 2~4:0~4:0
The permeable reaction wood bed of material 2 of~4 lime stone, zeroth order iron powder and natural zeolite, the upper end of the lucite tubing string 1 and institute
State sump 6 to connect, its lower end sets buffering cell 5；The sump 6 connects with the collection bottle 7, and the peristaltic pump 8 is logical
Cross rubber tube 9 and connect the collection bottle 7 and the permeable reaction wood bed of material 2, catchmented described in one end connection of the rubber tube 9
Bottle 7, the other end is in the buffering cell 5.In experimentation, by a huge sum of money for 10~100 times of the content that is above standard of preparation
Category pollution water sample is contained in the sump 6, and water sample is flow in the collection bottle 7, and peristaltic pump 8 is by rubber tube 9 by water sample
Extracting into the buffering cell 5 of the lower end of lucite tubing string 1, peristaltic pump 8 constantly extracts water sample until buffering in cell 5,
The constantly increase of the buffering water of cell 5 is permeated up to the permeable reaction wood bed of material 2, the lime stone through its internal filling, zero
Discharged after valency iron powder and natural zeolite purification, take the water sample detection content of beary metal after purification, you can determine the stone of optimal proportion
The content of lime stone, zeroth order iron powder and natural zeolite, and the permeable of underground water in-situ immobilization heavy metal pollution water sample can be filled in
In reaction wall, the heavy metal in underground water is efficiently removed, realizes in-situ immobilization；When purification process need to circulate progress, after purification
Top of the water sample through the lucite tubing string 1 is expelled in the sump 6, extracts water through collection bottle 7, peristaltic pump 8 again
Sample is to buffering in cell 5, again through the permeable circularly purifying of the reaction wood bed of material 2.Experimental provision is simple, easily operated, can
Lime stone, zeroth order iron powder and the natural zeolite for carrying out different ratio are tested, and are purified the best proportioning of effect, are directly used
In the permeable reactive barrier of underground.
Further, the volume ratio of the lime stone, zeroth order iron powder and natural zeolite is 2:1:4；The grain of the lime stone
Footpath is 2mm~5mm, and the particle diameter of the zeolite is 2mm~5mm, and the particle diameter of the zeroth order iron powder is less than 0.5mm.Before experiment, press
Volume ratio takes the lime stone of respective volume, zeroth order iron powder and natural zeolite, and adds a small amount of water to be stirred, and makes zeroth order iron powder uniform
Lime stone and zeolite surface are attached to, is filled into lucite tubing string 1, filling process is constantly shaken, and makes lime stone, Zero-valent Iron
It is compacted between powder and natural zeolite close.
Further, in addition to sand gravel layer 3, the sand gravel layer 3 are located at the permeable reaction wood bed of material 2 respectively
Top and bottom, the thickness of the sand gravel layer 3 is 50cm.The sand gravel layer 3 of bottom can play the work of preliminary purification water
With and hold the permeable reaction wood bed of material 2, the sand gravel layer 3 at top can press the permeable reaction wood bed of material 2
Real, lime stone, zeroth order iron powder and the natural zeolite filled during avoiding on current direction enter the sump 6 with current
In.
Further, in addition to porous filter plate 4, the porous filter plate 4 are located at the permeable bottom of the reaction wood bed of material 2
The lower section of sand gravel layer 3.The porous filter plate 4 can prevent lime stone, zeroth order iron powder and the day that the permeable reaction wood bed of material 2 is filled
Right zeolite is fallen in water sample purification process in the buffering cell 5.
Further, the internal diameter of the lucite tubing string 1 is 80mm, length 700mm；The permeable reaction material
The filling length of layer 2 is 500mm.The levels of the permeable reaction wood bed of material 2 set the sand gravel layer 3 respectively, described in top
A part of space is provided between the top of sand gravel layer 3 and the lucite tubing string 1, is easy to the discharge of purified water.
Further, two delivery ports 10 are arranged at intervals on the cylinder of the lucite tubing string 1, on the delivery port 10
Provided with tongs.Delivery port 10 is used to the water sample discharge for purifying certain time carrying out detection content of beary metal.
Embodiment two
Tested using the device and packing material of the embodiment of the present invention one, take different volumes than lime stone, zeroth order
The permeable reaction wood bed of material 2 of iron powder and natural zeolite is filled into the lucite tubing string 1, and it is net to carry out heavy metal containing sewage
Change.The proportioning of the lime stone, zeroth order iron powder and natural zeolite is shown in Table 1.
Experiment material volume proportion (the lime stone of table 1：Iron powder：Zeolite)
Different volumes than lime stone, iron powder, zeolite filling after different time take purification water sample detection content of beary metal, only
Lead (Pb), zinc (Zn) before change in waste water, the concentration of cadmium (Cd) are respectively 0.2mg/L, 50.0mg/L, 0.4mg/L, through the present invention
The device of embodiment one is purified, and the concentration of Pb and Cd after purification in water sample is below test limit 0.001mg/L, in water sample
Main metallic element is that Fe and Zn, Fe and Zn change in concentration are shown in Table shown in 2 and table 3.
Fe concentration in each group solution of table 2
As can be seen from Table 2, iron ion is all reduced to zero after 24 hours, in experimentation, sampling receive in bottle liquid with it is empty
Gas contacts and becomes micro- Huang,
4Fe2++O2+2H2O=4Fe3++4OH-
After continuing 24 hours, pellucidity is presented in water body.There is ferric ion generation during explanation, and during experiment
Gradually adsorbed by cylindrical material.Numbering 2 and numbering 3, numbering 7 and numbering 8 are contrasted it can be found that iron content higher one group is molten
Iron concentration is higher in liquid, and the ion lasting existing time is longer.Numbering 4,5 is contrasted with numbering 7,8 as can be seen that compiling
In the case that number 7,8 sodalime stone contents are relatively low, just there is iron ion in numbering 7,8 after or so 2 hours, hysteresis be present and shows
As, showing lime stone and Zero-valent Iron in the presence of acting synergistically, the ratio of lime stone and Zero-valent Iron is bigger, and iron ion occurs more early,
Content is higher.
Zn concentration in each group solution of table 3
As can be seen from Table 3, preceding 1 hour Zn in the material of the only containing limestone serous of numbering 12+Ion concentration reduces rapidly, removes
Rate slowly reduces up to 50%, afterwards concentration with the time；Mixing material is obvious to the removal effect of Zn ions, Zn2+Concentration is preceding 1
Reduced rapidly in individual hour, overall clearance is all higher than 80%, overall to be reduced to zero in preceding 5 hours or so concentration, removal
Rate can reach 100%.Wherein, it is low by contrast it can be found that numbering 2,4,6,7,8 makes Zn ion concentrations be down to below 1mg/L
In the class water standard (DZT0290-2015) of national underground water three.Zn ions concentration within preceding 2 hours reduces rapidly, lime stone
When identical with zeolite ratio, one group of few removal rate to Zn of iron content is most fast, and optimal proportion is numbering 7, small at first 1
When to Zn ion remavals rate be 100%.
The lime stone of numbering 7, zeroth order are determined according to the result of variations of iron concentration and zinc ion concentration in purification water sample
The ratio 2 of iron powder and natural zeolite:1:4 be optimum proportioning, the permeable reaction available for heavy metal in in-situ remediation of underground water
In wall, removal efficiency is high.
Herein, the involved noun of locality such as forward and backward, upper and lower is to be located at parts in accompanying drawing in figure and zero
The mutual position of part is intended merely to the clear of expression technology scheme and conveniently come what is defined.It should be appreciated that the noun of locality
Use should not limit the claimed scope of the application.
In the case where not conflicting, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (6)
1. the device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material, it is characterized in that, including lucite tube
Post, sump, collection bottle and peristaltic pump；The inside filling of the lucite tubing string is 2~4 containing proportioning:0~4:0~4 stone
The permeable reaction wood bed of material of lime stone, zeroth order iron powder and natural zeolite, upper end and the sump of the lucite tubing string
Connection, its lower end set buffering cell；The sump connects with the collection bottle, and the peristaltic pump connects institute by rubber tube
Collection bottle and the permeable reaction wood bed of material are stated, one end of the rubber tube connects the collection bottle, and the other end is positioned at described
Buffer in cell.
2. the device of the simulation PRB in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material, it is special
Sign is that the volume ratio of the lime stone, zeroth order iron powder and natural zeolite is 2:1:4；The particle diameter of the lime stone is 2mm~5mm,
The particle diameter of the zeolite is 2mm~5mm, and the particle diameter of the zeroth order iron powder is less than 0.5mm.
3. the device of the simulation PRB in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material, it is special
Sign is, in addition to sand gravel layer, and the sand gravel layer is located at the top and bottom of the permeable reaction wood bed of material respectively, described
The thickness of sand gravel layer is 50cm.
4. the device of the simulation PRB in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material, it is special
Sign is, in addition to porous filter plate, and the porous filter plate is located at the lower section of the sand gravel layer of the permeable reaction wood bed of material bottom.
5. the device of the simulation PRB in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material, it is special
Sign is that two delivery ports are arranged at intervals on the cylinder of the lucite tubing string, and the delivery port is provided with tongs.
6. the device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material according to claim 1 or 5,
It is characterized in that the internal diameter of the lucite tubing string is 80mm, length 700mm；The filling of the permeable reaction wood bed of material
Length is 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945117.0A CN107540128A (en) | 2017-09-30 | 2017-09-30 | The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945117.0A CN107540128A (en) | 2017-09-30 | 2017-09-30 | The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material |
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| CN107540128A true CN107540128A (en) | 2018-01-05 |
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ID=60967782
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|---|---|---|---|
| CN201710945117.0A Pending CN107540128A (en) | 2017-09-30 | 2017-09-30 | The device of the simulation PRB in-situ immobilization heavy metal pollution underground water containing packing material |
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| CN114573189A (en) * | 2022-03-16 | 2022-06-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Goaf acidic wastewater treatment structure and method |
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| CN114573189A (en) * | 2022-03-16 | 2022-06-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Goaf acidic wastewater treatment structure and method |
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