CN207671801U - The experimental provision of simulation in-situ immobilization heavy metal pollution underground water containing packing material - Google Patents
The experimental provision of simulation in-situ immobilization heavy metal pollution underground water containing packing material Download PDFInfo
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- CN207671801U CN207671801U CN201721303736.1U CN201721303736U CN207671801U CN 207671801 U CN207671801 U CN 207671801U CN 201721303736 U CN201721303736 U CN 201721303736U CN 207671801 U CN207671801 U CN 207671801U
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Abstract
The utility model discloses a kind of devices for simulating PRB in-situ immobilization heavy metal pollution underground water containing packing material, and the experimental provision includes organic glass tube column, sump, collection bottle and peristaltic pump；Fill containing limestone serous in the inside of the organic glass tubing string, the permeable reaction wood bed of material of zeroth order iron powder and natural zeolite, by experimental provision to the lime stone of 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, it solves the problems, such as low to the removal rate of the Zn elements of more difficult removal, an application reference is provided for the selection of PRB fillers, the period for making the operation of PRB lasting is long, 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 utility model belongs to water pollution recovery technique field, and in particular to one kind PRB containing packing material simulation is repaiied in situ
The device of multiple heavy metal pollution underground water.
Background technology
There is serious lead zinc cadmium pollution phenomenon in many mining areas in recent years, use permeable reactive barrier in the related technology
(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, cannot be widely used in lead zinc cadmium
In the groundwater remediation of equal heavy metal pollutions.
Utility model content
In view of this, the embodiments of the present invention provide a kind of reality of simulation in-situ immobilization heavy metal pollution underground water
Experiment device obtains the mixing material of filling permeable reactive barrier for testing, can be efficiently applied to underground water heavy metal extensively
Reparation.
In order to solve the above technical problems, the embodiments of the present invention provide one kind containing the original positions packing material simulation PRB
The device of repairing heavy metal pollution underground water, including organic glass tube column, sump, collection bottle and peristaltic pump；Organic glass
The inside filling of glass tubing string is 2~4 containing proportioning:0~4:The permeable reaction of 0~4 lime stone, zeroth order iron powder and natural zeolite
The upper end of material layer, the organic glass tubing string is connected to the sump, lower end setting buffering cell；The sump with
The collection bottle connection, the peristaltic pump is connected to the collection bottle and the permeable reaction wood bed of material by rubber tube, described
One end of rubber tube is connected to the collection bottle, and the other end is located in the buffering cell.
Preferably, the volume ratio of the lime stone, zeroth order iron powder and natural zeolite is 2:1:4；The grain size of the lime stone
Grain size for 2mm~5mm, the zeolite is 2mm~5mm, and the grain size of the zeroth order iron powder is less than 0.5mm.
Preferably, further include sand gravel layer, the sand gravel layer is located at the top of the permeable reaction wood bed of material
And bottom, the thickness of the sand gravel layer is 50cm.
Preferably, further include porous filter plate, the porous filter plate is 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 organic glass tubing string is 80mm, length 700mm；The permeable reaction wood bed of material
Filling length be 500mm.
Preferably, two water outlets of interval setting, the water outlet are equipped with only on the cylinder of the organic glass tubing string
Water presss from both sides.
Compared with the relevant technologies, the advantageous effect that the technical solution of the utility model embodiment offer is brought is：This practicality
The novel device that PRB in-situ immobilization heavy metal pollution underground water is simulated containing packing material, including organic glass tube column, sewage
Slot, collection bottle and peristaltic pump；The heavy metal pollution water sample of laboratory preparation is held in sump, water sample is compacted through the collection bottle
Water sample is extracted the permeable reaction wood bed of material to the organic glass tubing string by dynamic pump, through the internal lime stone filled, zero
It is discharged after valence iron powder and natural zeolite purification, takes the water sample detection content of beary metal of discharge, then can select the stone of proper ratio
Lime stone, zeroth order iron powder and natural zeolite are filled in the permeable reactive barrier of underground water heavy metal in-situ immobilization；Experimental provision letter
Single, experimentation is easily operated.
Description of the drawings
Fig. 1 is the device that the utility model embodiment simulates PRB in-situ immobilization heavy metal pollution underground water containing packing material
Schematic diagram.
Wherein：Organic glass tubing string 1, the permeable reaction wood bed of material 2, sand gravel layer 3, porous filter plate 4, buffering cell 5, dirt
Sink 6, collection bottle 7, peristaltic pump 8, rubber tube 9, water outlet 10.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is further described.
With reference to attached drawing 1, the device of PRB in-situ immobilization heavy metal pollution underground water, including organic glass are simulated containing packing material
Glass tubing string 1, sump 6, collection bottle 7 and peristaltic pump 8；The inside filling proportioning of the organic glass tubing string 1 is 2~4:0~4:0
~4 lime stone, the permeable reaction wood bed of material 2 of zeroth order iron powder and natural zeolite, the upper end of the organic glass tubing string 1 with
The sump 6 is connected to, lower end setting buffering cell 5；The sump 6 is connected to the collection bottle 7, the peristaltic pump 8
It is connected to the collection bottle 7 and the permeable reaction wood bed of material 2 by rubber tube 9, one end of the rubber tube 9 is connected to the collection
Water bottle 7, the other end are located in the buffering cell 5.In experimentation, by the weight of 10~100 times of the content that is above standard of preparation
Metallic 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 is extracted into the buffering cell 5 of 1 lower end of organic glass tubing string, and peristaltic pump 8 constantly extracts water sample until buffering cell 5
In, buffering 5 water of cell, which constantly increases, to be permeated up to the permeable reaction wood bed of material 2, through its internal lime stone filled,
It is discharged after zeroth order iron powder and natural zeolite purification, takes purified water sample detection content of beary metal, you can determine optimal proportion
The content of lime stone, zeroth order iron powder and natural zeolite, and oozing in underground water in-situ immobilization heavy metal pollution water sample can be filled
In saturating reaction wall, the heavy metal in underground water is efficiently removed, realizes in-situ immobilization；When purification process need to recycle progress, after purification
Top of the water sample through the organic glass tubing string 1 be expelled in the sump 6, again through collection bottle 7, peristaltic pump 8 extracts
In water sample to buffering cell 5, again through permeable 2 circularly purifying of the reaction wood bed of material.Experimental provision is simple, easily operated,
The lime stone, zeroth order iron powder and natural zeolite that can carry out different ratio are tested, and are purified the best proportioning of effect, directly
For 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
Diameter is 2mm~5mm, and the grain size of the zeolite is 2mm~5mm, and the grain size 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 a small amount of water is added to be stirred, and keeps zeroth order iron powder uniform
It is attached to lime stone and zeolite surface, in filling to organic glass tubing string 1, filling process is constantly shaken, and lime stone, Zero-valent Iron are made
It is compacted between powder and natural zeolite close.
Further, further include sand gravel layer 3, the sand gravel layer 3 is located at the permeable reaction wood bed of material 2
The thickness of top and bottom, 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
It is real, avoid the lime stone filled during flow is upward, zeroth order iron powder and natural zeolite from entering the sump 6 with flow
In.
Further, further include porous filter plate 4, the porous filter plate 4 is located at permeable 2 bottom of the reaction wood bed of material
Sand gravel layer 3 lower section.The porous filter plate 4 can prevent the lime stone that the permeable reaction wood bed of material 2 fills, zeroth order iron powder and
Natural zeolite is fallen in water sample purification process in the buffering cell 5.
Further, the internal diameter of the organic glass 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 are respectively set the sand gravel layer 3, described in top
It is equipped with a part of space between sand gravel layer 3 and the top of the organic glass tubing string 1, is convenient for the discharge of purified water.
Further, it is spaced on the cylinder of the organic glass tubing string 1 and two water outlets 10 is set, on the water outlet 10
Equipped with tongs.Water outlet 10 is used to the water sample discharge for purifying certain time being detected content of beary metal.
Embodiment two
Tested using the device and packing material of the utility model embodiment one, take different volumes than lime stone,
In the filling to the organic glass tubing string 1 of the permeable reaction wood bed of material 2 of zeroth order iron powder and natural zeolite, carry out heavy metal-polluted
Water warfare.The proportioning of the lime stone, zeroth order iron powder and natural zeolite is shown in Table 1.
1 experiment material volume proportion (lime stone of table：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
The concentration of lead (Pb), zinc (Zn), cadmium (Cd) before changing in waste water is respectively 0.2mg/L, 50.0mg/L, 0.4mg/L, through this reality
It is purified with the device of new embodiment one, the concentration of Pb and Cd after purification in water sample are below detection limit 0.001mg/
L, main metallic element is that the concentration variation of Fe and Zn, Fe and Zn are shown in Table shown in 2 and table 3 in water sample.
The concentration of Fe in 2 each group solution of table
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 illustrating, and during the test
Gradually adsorbed by cylindrical material.Number 2 and number 3, number 7 and number 8 are compared it can be found that higher one group of iron content is molten
Iron concentration is higher in liquid, and the ion lasting existing time is longer.Number 4,5 is compared with number 7,8 as can be seen that compiling
In the case of limestone content is lower in numbers 7,8, just there is iron ion in number 7,8 after or so 2 hours, there is lag and shows
As, showing that lime stone and Zero-valent Iron exist and acts synergistically, the ratio of lime stone and Zero-valent Iron is bigger, and iron ion occurs more early,
Content is higher.
The concentration of Zn in 3 each group solution of table
As can be seen from Table 3, preceding 1 hour Zn in the material of the only containing limestone serous of number 12+Ion concentration reduces rapidly, removal
Rate slowly reduces at any time up to 50%, later concentration；Mixing material is apparent to the removal effect of Zn ions, Zn2+Concentration is preceding 1
It is reduced rapidly in a hour, whole removal rate is all higher than 80%, whole to be reduced to zero in preceding 5 hours or so concentration, removal
Rate can reach 100%.Wherein, by comparing it can be found that number 2,4,6,7,8 makes Zn ion concentrations be down to 1mg/L hereinafter, low
In national underground water three classes water standard (DZT0290-2015).Zn ions concentration within preceding 2 hours reduces rapidly, lime stone
When identical with zeolite ratio, iron content few one group is most fast to the removal rate of Zn, and optimal proportion is number 7, small at first 1
When to Zn ion remaval rates be 100%.
The lime stone of number 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, can be used for the permeable reaction of heavy metal in in-situ remediation of underground water
In wall, removal efficiency is high.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. the experimental provision of the simulation in-situ immobilization heavy metal pollution underground water containing packing material, characterized in that including organic glass
Glass tubing string, sump, collection bottle and peristaltic pump；The permeable reaction wood bed of material is filled in the inside of the organic glass tubing string, described
The upper end of organic glass tubing string is connected to the sump, lower end setting buffering cell；The sump and the collection bottle
Connection, the peristaltic pump are connected to the collection bottle and the permeable reaction wood bed of material by rubber tube, and the one of the rubber tube
End is connected to the collection bottle, and the other end is located in the buffering cell.
2. the experimental provision of the simulation in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material,
It is characterized in that further including sand gravel layer, the sand gravel layer is located at the top and bottom of the permeable reaction wood bed of material,
The thickness of the sand gravel layer is 50cm.
3. the experimental provision of the simulation in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material,
It is characterized in that further including porous filter plate, the porous filter plate is located at the sand gravel layer of the permeable reaction wood bed of material bottom
Lower section.
4. the experimental provision of the simulation in-situ immobilization heavy metal pollution underground water according to claim 1 containing packing material,
It is characterized in that two water outlets of interval setting, the water outlet are equipped with tongs on the cylinder of the organic glass tubing string.
5. the experiment dress of the simulation in-situ immobilization heavy metal pollution underground water according to claim 1 or 4 containing packing material
It sets, characterized in that the internal diameter of the organic glass tubing string is 80mm, length 700mm；The permeable reaction wood bed of material is filled out
It is 500mm to fill length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721303736.1U CN207671801U (en) | 2017-09-30 | 2017-09-30 | The experimental provision of simulation in-situ immobilization heavy metal pollution underground water containing packing material |
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| CN201721303736.1U CN207671801U (en) | 2017-09-30 | 2017-09-30 | The experimental provision of simulation in-situ immobilization heavy metal pollution underground water containing packing material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960746A (en) * | 2021-02-04 | 2021-06-15 | 中国科学院沈阳应用生态研究所 | Method for removing escherichia coli and pathogens in wastewater by using active material |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960746A (en) * | 2021-02-04 | 2021-06-15 | 中国科学院沈阳应用生态研究所 | Method for removing escherichia coli and pathogens in wastewater by using active material |
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