CN106531276A - Chemical reduction and biological reduction system for repairing radioactive contaminated soil - Google Patents
Chemical reduction and biological reduction system for repairing radioactive contaminated soil Download PDFInfo
- Publication number
- CN106531276A CN106531276A CN201611092658.5A CN201611092658A CN106531276A CN 106531276 A CN106531276 A CN 106531276A CN 201611092658 A CN201611092658 A CN 201611092658A CN 106531276 A CN106531276 A CN 106531276A
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- CN
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- Prior art keywords
- wall
- housing
- main box
- shaft
- screen pack
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
Abstract
The invention discloses a chemical reduction and biological reduction system for repairing radioactive contaminated soil. The chemical reduction and biological reduction system comprises a wastewater collecting tank, a reaction wall, a microbial culture device, a membrane separation system device and an ultraviolet ray detection system, wherein a wastewater outlet pipe of the wastewater collecting tank is connected with a liquid feeding end of a first pump; a liquid draining end of the first pump is connected with the liquid feeding end of the reaction wall; an outlet end of the microbial culture device is connected with a microbial feeding pipe of the reaction wall; the liquid draining end of the reaction wall is connected with the liquid feeding end of a second pump; the liquid draining end of the second pump is connected with the liquid feeding end of the membrane separation system device; the liquid draining end of the membrane separation system device is connected with the liquid feeding end of a fourth pump; the liquid draining end of the fourth pump is connected with the liquid feeding end of the ultraviolet ray detection system; the ultraviolet ray detection system is equipped with the liquid draining end. According to the invention, iron-reducing bacteria are continuously injected into a zero-valent iron reaction system in an active material, so that corrosion products on the iron surface can be effectively reduced and removed and the reduction utilization effect of iron is improved.
Description
Technical field：
The present invention relates to soil pollution processing technology field, more specifically to a kind of reparation radioactive pollution soil
Electronation and biological reducing system.
Background technology：
With the continuous development of China's nuclear power, the process and disposal of the active nucleus waste matter of nuclear power generation are current nuclear energy profits
With the key issue that must be solved, and it is related to one of key issue that nuclear power further develops in a healthy way.Zero-valent Iron (zero
Valent iron, ZVI) have the advantages that raw material is cheap and easy to get, simple to operate, secondary pollution few, thus 90 years last century
The states such as generation, America and Europe propose using ZVI as (permeable reactive barrier, PRB) in the water-bearing layer work
Property material, can be with UO in effective process subsoil water2 2+、MoO4 2-、TcO4 -Deng material.Over more than 20 years, Fe0- PRB technologies (live by ferrum
The PRB of property material) comparatively ideal result is achieved in subsoil water in terms of the in-situ immobilization of radionuclide.But Fe0-PRB
Also there are many defects in use in technology：The corrosion products such as the carbonate that generates in actual motion, sulfate can be covered in
Iron surface, reduces reactivity, shortens the service life of Zero-valent Iron.
The content of the invention：
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of electronation of reparation radioactive pollution soil
With biological reducing system, iron-reducing bacteria in its Zero-valent Iron reaction system in active material, is constantly injected, can be effective
The reduction of ironing surface corrosion product is removed, so as to improve the reduction utilizing status of ferrum, additionally, iron-reducing bacteria itself also can be by
Uranium is reduced, and has so been constructed the coupling process of an electronation and biological reducing, has been significantly improved the clean-up effect of reaction wall.
The present invention solves the scheme of the technical problem：
A kind of electronation and biological reducing system for repairing radioactive pollution soil, including sewage collecting box, reaction wall,
Microbial cultivation device, film separation system device and UV detection system, the waste water drain pipe of the sewage collecting box are connected
The liquid feeding end of first pump housing, the liquid outlet of first pump housing connect the liquid feeding end of reaction wall, and the discharge end of microbial cultivation device leads to
The microorganism feed pipe of reaction wall is connect, the liquid outlet of reaction wall connects the liquid feeding end of second pump housing, the liquid outlet of second pump housing
The liquid feeding end of film separation system device is connected, the liquid outlet of film separation system device connects the liquid feeding end of the 4th pump housing, the 4th pump
The liquid outlet of body connects the liquid feeding end of UV detection system, has liquid outlet in UV detection system；
The data for detecting are conveyed to control main frame by data wire by UV detection system；
The reaction wall includes exterior wall housing, and the middle part of exterior wall housing has reaction cavity, the top side of exterior wall housing
On plate have feed end, on another side plate in bottom of exterior wall housing have discharge end, inner housing sleeve in reaction cavity, inner shell
The top board of exterior wall housing is stretched out at the top of body, and the top of the side wall of inner housing has upper side wall through hole, the opposite side of inner housing
The bottom of wall has on lower wall through hole, upper side wall through hole and lower wall through hole and is all covered with mesh plate, and the side wall of mesh plate is solid
It is scheduled on the medial wall of upper side wall through hole or lower wall through hole, the feed end of exterior wall housing is corresponding with upper side wall through hole, exterior wall
The discharge end of housing is corresponding with lower wall through hole, is filled with active material, has connected micro- life at the top of inner housing in inner housing
Thing feed pipe.
The active material is made up of the mixing of CNT, iron powder and sand.
Active material content of carbon nanotubes by weight percentage is 5%, and iron content is 5%, and sand content is
90%.
Be fixed with annular rib on the lateral wall of the inner housing of the lower section of the upper side wall through hole, lower wall through hole it is upper
The lateral wall for being fixed with lower annular rib, upper annular rib and lower annular rib on the lateral wall of the inner housing of side is fixed on exterior wall
On the medial wall of housing.
The bottom surface that being pressed against on the top surface of the inner housing has connecting plate, connecting plate has locating dowel, including locating dowel sleeve
In the positioning shrinkage pool having on the top end face of housing, in positioning shrinkage pool, sleeve permanent magnet set is fixed with, locating dowel sleeve is simultaneously inhaled
It is attached in permanent magnet set.
The sewage collecting box includes main box and lid, and lid is fixed on main box, is bolted with waste water and enters on lid
Liquid pipe, is clamped with the first sealing ring between waste water feed tube and lid, be clamped with the second sealing ring between lid and main box, main
Waste water drain pipe, left side of the waste water feed tube in main box, the bottom surface of the top board of main box has been connected on the right side wall of casing
It is fixed with protection dividing plate, main box is separated into upper closed chamber and lower circulation chamber by protection dividing plate, lower circulation chamber is fixedly arranged in the middle of
The upper end of the first screen pack and the second screen pack, the first screen pack and the second screen pack is fixed on the bottom of protection dividing plate
On face, the oblique plate being tilted to the left below the second screen pack, is fixed with, the lower end of oblique plate is fixed on the bottom surface of main box
On, the first stirring motor and the second stirring motor are fixed on the top board of main box, the first stirring motor and the second stirring motor
Output shaft the first shaft and the second shaft are connected to by shaft coupling, the upper end of the first shaft is hinged on protection
On dividing plate, the lower end of the first shaft is hinged on the base plate of main box, and the second shaft is hinged on protection dividing plate, and first stirs
Mix axle to be between lid and the first screen pack, the second shaft is between the first screen pack and the second screen pack,
The upper and lower of the first shaft is respectively and fixedly provided with agitator arm, and the second shaft is fixedly arranged in the middle of agitator arm；
Waste material drainage conduit is connected on the base plate of the main box between first screen pack and the second screen pack, has been given up
Plug is fixed with material drainage conduit.
In the microbial cultivation device, culture has iron-reducing bacteria.
The present invention prominent effect be：
Compared with prior art, iron-reducing bacteria is constantly injected in its Zero-valent Iron reaction system in active material, can
Effectively to remove the reduction of ironing surface corrosion product, so as to improve the reduction utilizing status of ferrum, additionally, iron-reducing bacteria is certainly
Uranium can also be reduced by body, so constructed the coupling process of an electronation and biological reducing, significantly improved reaction wall
Clean-up effect.
Description of the drawings：
Fig. 1 is the principle schematic diagram. of the present invention；
Fig. 2 is the structural representation of the reaction wall of the present invention；
Fig. 3 is the structural representation of the sewage collecting box of the present invention；
Fig. 4 is the partial enlarged drawing of Fig. 2.
Specific embodiment：
Embodiment, is shown in as shown in Figures 1 to 4, a kind of electronation and biological reducing system for repairing radioactive pollution soil
System, including sewage collecting box 1, reaction wall 4, microbial cultivation device 3, film separation system device 5 and UV detection system
200, the waste water drain pipe 101 of the sewage collecting box 1 connects the liquid feeding end of first pump housing 6, and the liquid outlet of first pump housing 6 is connected
The liquid feeding end of reaction wall 4, the discharge end of microbial cultivation device 3 connect the microorganism feed pipe 401 of reaction wall 4, reaction wall 4
Liquid outlet connect the liquid feeding end of second pump housing 7, the liquid outlet of second pump housing 7 connects the liquid feeding end of film separation system device 5, film
The liquid outlet of separation system device 5 connects the liquid feeding end of the 4th pump housing 9, and the liquid outlet of the 4th pump housing 9 connects UV detection system
The liquid feeding end of system 200, has liquid outlet in UV detection system 200；
The data for detecting are conveyed to control main frame 100 by data wire by UV detection system 200；
The reaction wall 4 includes exterior wall housing 41, and the middle part of exterior wall housing 41 has reaction cavity 42, exterior wall housing 41
There is on the side plate of top feed end, there is on another side plate in bottom of exterior wall housing 41 discharge end, 43 sleeve of inner housing is anti-
In answering cavity 42, the top board of exterior wall housing 41 is stretched out at the top of inner housing 43, and the top of the side wall of inner housing 43 has upside
Wall through hole 44, the bottom of the opposite side wall of inner housing 43 have lower wall through hole 45, upper side wall through hole 44 and lower wall through hole 45
On be all covered with mesh plate 402, the side wall of mesh plate 402 is fixed on the medial wall of upper side wall through hole 44 or lower wall through hole 45
On, the feed end of exterior wall housing 41 is corresponding with upper side wall through hole 44, discharge end and 45 phase of lower wall through hole of exterior wall housing 41
Correspondence, is filled with active material 46 in inner housing 43, the top of inner housing 43 has connected microorganism feed pipe 401.
Further, the active material 46 is made up of the mixing of CNT, iron powder and sand.
Further, the content of carbon nanotubes by weight percentage of the active material 46 is 5%, and iron content is
5%, sand content is 90%.
Further, annular rib is fixed with the lateral wall of the inner housing 43 of the lower section of the upper side wall through hole 44
47, lower annular rib 48 is fixed with the lateral wall of the inner housing 43 of the top of lower wall through hole 45, upper annular rib 47 is with
The lateral wall of annular rib 48 is fixed on the medial wall of exterior wall housing 41.
Further, being pressed against on the top surface of the inner housing 43 has connecting plate 49, and the bottom surface of connecting plate 49 has positioning
Post 491, in the positioning shrinkage pool 431 that 491 sleeve of locating dowel has on the top end face of inner housing 43, sleeve in positioning shrinkage pool 431
And permanent magnet set 432 is fixed with, 491 sleeve of locating dowel simultaneously adsorbs in permanent magnet set 432.
Further, the sewage collecting box 1 includes main box 11 and lid 12, and lid 12 is fixed on main box 11
On, waste water feed tube 102 is bolted with lid 12, the first sealing ring 13 is clamped between waste water feed tube 101 and lid 12, is covered
The second sealing ring 14 is clamped between body 12 and main box 11, waste water drain pipe 101 has been connected on the right side wall of main box 11, is given up
Left side of the water feed tube 101 in main box 11, the bottom surface of the top board of main box 11 are fixed with protection dividing plate 15, protect dividing plate 15
Main box 11 is separated into into upper closed chamber 10 and lower circulation chamber 20, lower circulation chamber 20 is fixedly arranged in the middle of 16 He of the first screen pack
The upper end of the second screen pack 17, the first screen pack 16 and the second screen pack 17 is fixed on the bottom surface of protection dividing plate 15,
The lower section of the second screen pack 17 is fixed with the oblique plate 18 being tilted to the left, and the lower end of oblique plate 18 is fixed on the bottom of main box 11
On face, the first stirring motor 30 and the second stirring motor 40 are fixed on the top board of main box 11, the first stirring motor 30 and
The output shaft of two stirring motors 40 is connected to the first shaft 50 and the second shaft 60, the first shaft by shaft coupling
50 upper end is hinged on protection dividing plate 15, and the lower end of the first shaft 50 is hinged on the base plate of main box 11, the second stirring
Axle 60 is hinged on protection dividing plate 15, and the first shaft 50 is between lid 12 and the first screen pack 16, the second shaft
60 are between the first screen pack 16 and the second screen pack 17, and the upper and lower of the first shaft 50 is respectively and fixedly provided with stirring
Impeller 70, the second shaft 60 are fixedly arranged in the middle of agitator arm 70；
Waste material has been connected on the base plate of the main box 11 between first screen pack 16 and the second screen pack 17 to arrange
Expects pipe 103, is fixed with plug 104 in waste material drainage conduit 103.
Further, in the microbial cultivation device 3, culture has iron-reducing bacteria.
Operation principle：Waste water with alpha-contamination soil is poured in sewage collecting box 1, by the first drainage screen
The filtration of plate 16 and the second screen pack 17, large particulate matter etc. is filtered, wherein by the first stirring motor 30
With the operation of the second stirring motor 40, prevent the large particulate matter for filtering from will not block the first screen pack 16 and the second drainage screen
Plate 17, so as to the proper flow for ensureing waste water is conveyed, and when large particulate matter is excessive, can open lid 12 and open plug
104 are toppled over, very convenient；
Operation of the waste water after filtration by first pump housing 6, which is processed in reaction wall 4, meanwhile, by inciting somebody to action
Iron-reducing bacteria in microbial cultivation device 3 is entered in inner housing 43 so that the ironing surface corrosion product of active material 46
Reduction is removed, and so as to improve the reduction utilizing status of ferrum, by the reduction reaction of active material 46, removes radioelement, so
Waste water is entered by the impurity in film separation system device 5 containing the granule after process or inside by second pump housing 7 afterwards
Composition is separated, and obtains relatively pure aqueous, and this aqueous is entered UV detection system by the effect of the 4th pump housing 9
Detected in 200, and detection data is conveyed to into control main frame 100, the data for obtaining are passed through display by control main frame 100
Show.
Wherein, the CNT in active material 46 has high efficiency of additive capability, and Zero-valent Iron has reduction, carbon nanometer
The surface area of pipe is big, and the oxide and hydroxide of the ferrum that can be produced Zero-valent Iron with reaction are adsorbed, so as to ensure zero
The reactivity of valency ferrum, extends its service life, so that the service life of the present embodiment is strengthened.
In the present embodiment, microbial cultivation device 3, film separation system device 5 and UV detection system 200 are existing
Known device, no longer describes in detail.
Finally, embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant technical field
Those of ordinary skill, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore
The technical scheme of all equivalents falls within scope of the invention, and the scope of patent protection of the present invention should be defined by the claims.
Claims (7)
1. a kind of electronation and biological reducing system for repairing radioactive pollution soil, including sewage collecting box (1), reaction wall
(4), microbial cultivation device (3), film separation system device (5) and UV detection system (200), it is characterised in that：It is described
The waste water drain pipe (101) of sewage collecting box (1) connects the liquid feeding end of first pump housing (6), and the liquid outlet of first pump housing (6) is connected
The liquid feeding end of reaction wall (4), the discharge end of microbial cultivation device (3) connect the microorganism feed pipe (401) of reaction wall (4),
The liquid outlet of reaction wall (4) connects the liquid feeding end of second pump housing (7), and the liquid outlet of second pump housing (7) connects film separation system
The liquid feeding end of device (5), the liquid outlet of film separation system device (5) connect the liquid feeding end of the 4th pump housing (9), the 4th pump housing (9)
Liquid outlet connect the liquid feeding end of UV detection system (200), there is in UV detection system (200) liquid outlet；
The data for detecting are conveyed to control main frame (100) by data wire by UV detection system (200)；
Described reaction wall (4) include exterior wall housing (41), and the middle part of exterior wall housing (41) has reaction cavity (42), exterior wall housing
(41) there is on top side plate feed end, there is on another side plate in bottom of exterior wall housing (41) discharge end, inner housing
(43) sleeve stretches out the top board of exterior wall housing (41) in reaction cavity (42) at the top of inner housing (43), inner housing (43)
The bottom that the top of side wall has upper side wall through hole (44), the opposite side wall of inner housing (43) has lower wall through hole (45),
Mesh plate (402) is all covered with upper side wall through hole (44) and lower wall through hole (45), and the side wall of mesh plate (402) is fixed on
On the medial wall of lateral through aperture (44) or lower wall through hole (45), feed end and upper side wall through hole (44) phase of exterior wall housing (41)
Correspondence, the discharge end of exterior wall housing (41) are corresponding with lower wall through hole (45), are filled with active material in inner housing (43)
(46), microorganism feed pipe (401) has been connected at the top of inner housing (43).
2. a kind of electronation and biological reducing system for repairing radioactive pollution soil according to claim 1, which is special
Levy and be：Active material (46) are made up of the mixing of CNT, iron powder and sand.
3. a kind of electronation and biological reducing system for repairing radioactive pollution soil according to claim 1, which is special
Levy and be：Active material (46) content of carbon nanotubes by weight percentage is 5%, and iron content is 5%, and sand content is
90%.
4. a kind of electronation and biological reducing system for repairing radioactive pollution soil according to claim 1, which is special
Levy and be：Annular rib (47) is fixed with the lateral wall of the inner housing (43) of the lower section of upper side wall through hole (44), under
Be fixed with lower annular rib (48) on the lateral wall of the inner housing (43) of the top of lateral through aperture (45), upper annular rib (47) and
The lateral wall of lower annular rib (48) is fixed on the medial wall of exterior wall housing (41).
5. a kind of electronation and biological reducing system for repairing radioactive pollution soil according to claim 4, which is special
Levy and be：The bottom surface that being pressed against on the top surface of inner housing (43) has connecting plate (49), connecting plate (49) has locating dowel
(491), in the positioning shrinkage pool (431) that, locating dowel (491) sleeve has on the top end face of inner housing (43), position shrinkage pool
(431) sleeve be fixed with permanent magnet set (432) in, locating dowel (491) sleeve simultaneously absorption in permanent magnet set (432).
6. a kind of electronation and biological reducing system for repairing radioactive pollution soil according to claim 1, which is special
Levy and be：Described sewage collecting box (1) includes main box (11) and lid (12), and lid (12) is fixed on main box (11),
Waste water feed tube (102) is bolted with lid (12), is clamped with the first sealing ring between waste water feed tube (101) and lid (12)
(13) the second sealing ring (14) is clamped between lid (12) and main box (11), has been connected on the right side wall of main box (11)
Waste water drain pipe (101), left side of the waste water feed tube (101) in main box (11), the bottom surface of the top board of main box (11) are solid
Surely there is protection dividing plate (15), main box (11) is separated into upper closed chamber (10) and lower circulation chamber (20) by protection dividing plate (15), under
Circulation chamber (20) is fixedly arranged in the middle of the first screen pack (16) and the second screen pack (17), the first screen pack (16) and
The upper end of two screen packs (17) is fixed on the bottom surface of protection dividing plate (15), and the lower section of the second screen pack (17) fixes oriented
Left-oblique oblique plate (18), the lower end of oblique plate (18) are fixed on the bottom surface of main box (11), the first stirring motor (30)
It is fixed on the top board of main box (11) with the second stirring motor (40), the first stirring motor (30) and the second stirring motor (40)
Output shaft the first shaft (50) and the second shaft (60) are connected to by shaft coupling, the first shaft (50) it is upper
End is hinged in protection dividing plate (15), and the lower end of the first shaft (50) is hinged on the base plate of main box (11), the second stirring
Axle (60) is hinged in protection dividing plate (15), and the first shaft (50) is between lid (12) and the first screen pack (16),
Second shaft (60) is between the first screen pack (16) and the second screen pack (17), the top of the first shaft (50)
Agitator arm (70) is respectively and fixedly provided with bottom, the second shaft (60) is fixedly arranged in the middle of agitator arm (70)；
Waste material has been connected on the base plate of the main box (11) between the first screen pack (16) and the second screen pack (17)
Drainage conduit (103), is fixed with plug (104) in waste material drainage conduit (103).
7. a kind of electronation and biological reducing system for repairing radioactive pollution soil according to claim 1, which is special
Levy and be：In microbial cultivation device (3), culture has iron-reducing bacteria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092658.5A CN106531276A (en) | 2016-12-01 | 2016-12-01 | Chemical reduction and biological reduction system for repairing radioactive contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092658.5A CN106531276A (en) | 2016-12-01 | 2016-12-01 | Chemical reduction and biological reduction system for repairing radioactive contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106531276A true CN106531276A (en) | 2017-03-22 |
Family
ID=58355045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611092658.5A Pending CN106531276A (en) | 2016-12-01 | 2016-12-01 | Chemical reduction and biological reduction system for repairing radioactive contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106531276A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530695A (en) * | 2019-09-11 | 2019-12-03 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of mold for the detection test of Radioactive decontamination rate |
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| CN105784619A (en) * | 2016-05-23 | 2016-07-20 | 绍兴文理学院 | Detection device for performance of soil-polluted permeable reactive wall |
| CN105858989A (en) * | 2016-06-14 | 2016-08-17 | 绍兴文理学院 | Device for treating organo-chlorine pesticide contaminated soil through cooperation of plasma and zero-valent iron |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002065478A1 (en) * | 2001-02-13 | 2002-08-22 | Framatome Anp | Method and device for treating a liquid contaminated by radioactive element and for eliminating the radioactive element |
| JP2007064732A (en) * | 2005-08-30 | 2007-03-15 | Mitsubishi Heavy Ind Ltd | Radioactive waste water treatment equipment and treatment method |
| CN104961166A (en) * | 2010-11-15 | 2015-10-07 | 阿彻丹尼尔斯米德兰德公司 | Compositions and uses thereof in converting contaminants |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110530695A (en) * | 2019-09-11 | 2019-12-03 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of mold for the detection test of Radioactive decontamination rate |
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Application publication date: 20170322 |
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