CN103302091A - Sequencing-batch polluted soil remediation method and device - Google Patents
Sequencing-batch polluted soil remediation method and device Download PDFInfo
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- CN103302091A CN103302091A CN2013102292654A CN201310229265A CN103302091A CN 103302091 A CN103302091 A CN 103302091A CN 2013102292654 A CN2013102292654 A CN 2013102292654A CN 201310229265 A CN201310229265 A CN 201310229265A CN 103302091 A CN103302091 A CN 103302091A
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- 239000002689 soil Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005067 remediation Methods 0.000 title claims abstract description 11
- 239000007800 oxidant agent Substances 0.000 claims abstract description 21
- 230000001590 oxidative effect Effects 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000008439 repair process Effects 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000001471 micro-filtration Methods 0.000 claims description 3
- 238000013508 migration Methods 0.000 claims description 3
- 230000005012 migration Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000006479 redox reaction Methods 0.000 claims description 3
- 238000012216 screening 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
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000003900 soil pollution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The invention discloses a sequencing-batch polluted soil remediation method and device. The sequencing-batch remediation device comprises an electrochemical remediation pond, a pipe-type mixer, remediation electrodes, clamping grooves, a cathode region control valve, an anode region control valve and perforated pipes, wherein polluted soil is arranged in the remediation pond, and then pollutants in the soil are effectively removed by adjusting electrochemical parameters of the system. The used remediation electrodes are convenient to install, good in permeability and large in surface area, an oxidant adding pipe is arranged between the two electrodes, is unlikely to be lost under the action of a filtering membrane, and is collected near the electrodes for reaction to remove the pollutants, so that the sewage treating effect is improved and the sewage treating time is shortened. The method and the device disclosed by the invention have the advantages that the operation is convenient, the structure is simple, the cost for operation and maintenance is greatly saved, and the remediation work of the polluted soil is more effective and more stable.
Description
Technical field
The present invention the present invention relates to the electrochemical rehabilitation field of contaminated soil, especially a kind of batch-type restorative procedure and device of contaminated soil.
Background technology
The overall situation severe of soil pollution, according to incomplete investigation, national contaminated arable land approximately has 1.5 hundred million mu at present, and sewage irrigation is polluted and is ploughed 3,250 ten thousand mu.Simultaneously, soil pollution causes that pollutant load exceeds standard in the crop, and is enriched in human body and the animal by food chain, and the harm human and livestock health causes human cancer and Other diseases etc.State Council issues in seven definite key tasks of " State Council is about the decision of the strengthen environmental protection of implementing a scientific outlook on development ", impressively lists " attach most importance to the control soil pollution, strengthen rural environmental protection ".Therefore; carry out the contaminated soil reparation; the mature technology system; enter food chain for the blocking-up pollutant; prevent from health is damaged, promote protection and the sustainable development of soil, set up ecological and food security security system; build a harmonious society, realize that Sustainable Socioeconomic Development has important function and meaning.
The soil electrochemistry recovery technique is more at present, such as disclosed patent " the electronic prosthetic device of a kind of contaminated soil heterotopic and method thereof " (CN 1O2806228 A), although this technology has avoided the focusing phenomenon to occur, shortened electronic repair time, but apparatus structure is complicated in this technology, and technique is loaded down with trivial details; Disclosed patent " technique device that the quick rehabilitating soil of a kind of advanced oxidation pollutes " (CN 1O2371267 A), although this technology to organic contaminants in soil go process highlyer, its installation cost is higher, technological process is complicated.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of batch-type restorative procedure and device of contaminated soil is provided, make contaminated soil obtain efficiently repairing fast.
For achieving the above object, the technical solution adopted in the present invention is as follows: a kind of batch-type prosthetic device of contaminated soil is characterized in that: comprise electrochemical rehabilitation pond, tube mixer, reparation electrode, draw-in groove, cathodic region control valve, anode region control valve and perforated pipe; Pool wall both sides, wherein said electrochemical rehabilitation pond are provided with the uniform draw-in groove in interval, repair electrode and are fixedly mounted in the electrochemical rehabilitation pond by draw-in groove, and a side is the anode region, and opposite side is the cathodic region; The cathodic region control valve links to each other with the reparation electrode of corresponding electrode district respectively with the anode region control valve; Tube mixer links to each other with perforated pipe, and perforated pipe is evenly distributed between the reparation electrode at interval in twos.
Described reparation electrode comprises that oxidant adds pipe, porous electrode one, filter membrane, power supply wiring mouth, clamping plate one, porous electrode two, clamping plate two, pipe clamp, base plate and electrode cavity; Wherein said porous electrode one and porous electrode two parallel vertical are fixed on the base plate, and two ends are clamped respectively fixing by clamping plate one and clamping plate two, and porous electrode one, how empty electrode two, clamping plate one, clamping plate two and base plate surround electrode cavity jointly; Described oxidant adds pipe and fixes by pipe clamp along electrode cavity inwall and base plate; Described filter membrane is coated on the inner porous electrode one of electrode cavity and porous electrode two walls; Described power supply wiring mouth connects porous electrode one and porous electrode two by power line, and is fixed on clamping plate one or the clamping plate two.
Described reparation electrode adds pipe by oxidant and links together, and links to each other with corresponding cathodic region control valve or anode region control valve.
Described porous electrode one and porous electrode two are the tabular conductive electrode of inertia.Described porous electrode one and porous electrode two are porous carbon electrodes, graphite electrode or stainless steel electrode.
The large 10cm of spacing of the Width porous electrode one of described clamping plate one and clamping plate two and porous electrode two.
Described oxidant adds pipe, and its section of tubing that is fixed on base plate is even perforation structure.
Described filter membrane is microfiltration membranes or milipore filter.
Described power supply wiring mouth links to each other with porous electrode two with porous electrode one, makes porous electrode one and porous electrode two make as a whole common formation negative electrode or anode.
A kind of batch-type restorative procedure of contaminated soil comprises the steps:
A. the reparation electrode of pool wall both sides, electrochemical rehabilitation pond is connected respectively and link to each other with corresponding cathodic region control valve or anode region control valve, as negative electrode and anode;
B. between each electrode, evenly put into the contaminated soil of processing through crushing screening;
C. after water, electrolyte and acid being mixed in tube mixer, join in the electrochemical rehabilitation pond, adjusting soil moisture content is 60%～80%, and the pH value of adjusting soil system is 3～4;
D. start power supply, control voltage is 15V, and electric current is 100mA, carries out electronic reparation reaction;
E. different according to pending polluter in the soil, select respectively to open cathodic control valve or anodic control valve, make oxidant enter the electrode cavity that each is repaired, oxidant is removed polluter in electrode zone and migration polluter generation redox reaction so far;
F. after redox is finished, will repair electrode clean and with after the soil removing of having repaired in the electrochemical rehabilitation pond, carry out the soil remediation work of next round.
The invention has the beneficial effects as follows: it is large that the reparation electrode of use is convenient to installation, good penetrability, surface area, oxidant is added pipe to be arranged in the middle of two electrodes, more difficult loss under the effect of filter membrane, pollutant is removed in reaction near concentrating on electrode, has improved the method wastewater treatment efficiency and time.In addition the method and device, easy to operate, simple in structure, greatly saved operation and maintenance cost, make the more operation of efficient stable of repair of contaminated soil.
Description of drawings
Fig. 1 is batch-type prosthetic device structural representation.
Fig. 2 is for repairing the electrode structure schematic diagram.
Reference numeral, 1-electrochemical rehabilitation pond; The 2-tube mixer; 3-repairs electrode; The 4-draw-in groove; 5-cathodic region control valve; 6-anode region control valve; The 7-perforated pipe; The 8-oxidant adds pipe; 9-porous electrode one; The 10-filter membrane; 11-power supply wiring mouth; 12-clamping plate one; The 13-porous electrode; 14-clamping plate two; The 15-pipe clamp; The 16-base plate; The 17-electrode cavity.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
The batch-type prosthetic device comprises electrochemical rehabilitation pond 1, tube mixer 2, repairs electrode 3, draw-in groove 4, cathodic region control valve 5, anode region control valve 6 and perforated pipe 7.1 pool wall both sides, electrochemical rehabilitation pond are provided with the uniform draw-in groove 4 in interval, repair electrode 3 and are fixedly mounted in the electrochemical rehabilitation pond 1 by draw-in groove 4, and a side is the anode region, and opposite side is the cathodic region.Tube mixer 2 links to each other with perforated pipe 7, and perforated pipe 7 is evenly distributed between the reparation electrode 3 at interval in twos.
Repair electrode 3 and comprise that oxidant adds pipe 8, porous electrode 1, filter membrane 10, power supply wiring mouth 11, clamping plate 1, porous electrode 2 13, clamping plate 2 14, pipe clamp 15, base plate 16 and electrode cavity 17.Wherein porous electrode 1 and porous electrode 2 13 parallel vertical are fixed on the base plate 16, two ends are clamped respectively fixing by clamping plate 1 and clamping plate 2 14, porous electrode 1, how empty electrode 2 13, clamping plate 1, clamping plate 2 14 and base plate 16 surround electrode cavity 17 jointly.The large 10cm of spacing of the Width porous electrode 1 of clamping plate 1 and clamping plate 2 14 and porous electrode 2 13.It is fixing by pipe clamp 15 along electrode cavity 17 inwalls and base plate 16 that oxidant adds pipe 8, and its section of tubing that is fixed on base plate 16 is even perforation structure.Filter membrane 10 is coated on electrode cavity 17 inner porous electrodes 1 and porous electrode 2 13 walls, and filter membrane 10 is microfiltration membranes or milipore filter.Power supply wiring mouth 11 connects porous electrode 1 and porous electrode 2 13 by power line, and is fixed on clamping plate 1 or the clamping plate 2 14.
Power supply wiring mouth 11 links to each other with porous electrode 2 13 with porous electrode 1, makes porous electrode 1 and porous electrode 2 13 make as a whole common formation negative electrode or anode.Reparation electrode 3 in cathodic region adds pipe 8 by oxidant and links together, and links to each other with corresponding cathodic region control valve 5; Equally, reparation electrode 3 in anode region adds pipe 8 by oxidant and links together, and links to each other with corresponding anode region control valve 6.Cathodic region control valve 5 links to each other with the reparation electrode 3 of corresponding electrode district respectively with anode region control valve 6.
Porous electrode 1 and porous electrode 2 13 are the tabular conductive electrode of inertia, are porous carbon electrodes, graphite electrode or stainless steel electrode.
The step that adopts the batch-type prosthetic device to repair contaminated land is:
Step (1): the reparation electrode 3 of 1 pool wall both sides, electrochemical rehabilitation pond is connected respectively and link to each other with corresponding cathodic region control valve 5 or anode region control valve 6, as negative electrode and anode;
Step (2): between each electrode, evenly put into the contaminated soil of processing through crushing screening;
Step (3): after water, electrolyte and acid mixed in tube mixer, join in the electrochemical rehabilitation pond 1, adjusting soil moisture content is 60%～80%, and the pH value of adjusting soil system is 3～4;
Step (4): start power supply, control voltage is 15V, and electric current is 100mA, carries out electronic reparation reaction;
Step (5): different according to pending polluter in the soil, select respectively to open cathodic control valve 5 or anodic control valve 6, make oxidant enter the electrode cavity 17 that each is repaired, oxidant is removed polluter in electrode zone and migration polluter generation redox reaction so far;
Step (6): after redox is finished, will repair electrode (3) cleaning and with after the soil removing of having repaired in electrochemical rehabilitation pond (1), carry out the soil remediation work of next round.
Although the present invention with preferred embodiment openly as above; but embodiment and accompanying drawing are not to limit the present invention, anyly are familiar with this skill person, without departing from the spirit and scope of the invention; can make various changes or retouch from working as, but equally within protection scope of the present invention.What therefore protection scope of the present invention should be defined with the application's claim protection domain is as the criterion.
Claims (10)
1. the batch-type prosthetic device of a contaminated soil is characterized in that: comprise electrochemical rehabilitation pond (1), tube mixer (2), repair electrode (3), draw-in groove (4), cathodic region control valve (5), anode region control valve (6) and perforated pipe (7); Pool wall both sides, wherein said electrochemical rehabilitation pond (1) are provided with the uniform draw-in groove in interval (4), repair electrode (3) and are fixedly mounted in the electrochemical rehabilitation pond (1) by draw-in groove (4), and a side is the anode region, and opposite side is the cathodic region; Cathodic region control valve (5) links to each other with the reparation electrode (3) of corresponding electrode district respectively with anode region control valve (6); Tube mixer (2) links to each other with perforated pipe (7), and perforated pipe (7) is evenly distributed between the reparation electrode (3) at interval in twos.
2. the batch-type prosthetic device of contaminated soil according to claim 1, it is characterized in that: described reparation electrode (3) comprises that oxidant adds pipe (8), porous electrode one (9), filter membrane (10), power supply wiring mouth (11), clamping plate one (12), porous electrode two (13), clamping plate two (14), pipe clamp (15), base plate (16) and electrode cavity (17); Wherein said porous electrode one (9) and porous electrode two (13) parallel vertical are fixed on the base plate (16), two ends are clamped respectively fixing by clamping plate one (12) and clamping plate two (14), porous electrode one (11), how empty electrode two (13), clamping plate one (12), clamping plate two (14) and base plate (16) surround electrode cavity (17) jointly; It is fixing by pipe clamp (15) along electrode cavity (17) inwall and base plate (16) that described oxidant adds pipe (8); Described filter membrane (10) is coated on the inner porous electrode one (9) of electrode cavity (17) and porous electrode two (13) walls; Described power supply wiring mouth (11) connects porous electrode one (9) and porous electrode two (13) by power line, and is fixed on clamping plate one (12) or the clamping plate two (14).
3. the batch-type prosthetic device of contaminated soil according to claim 2, it is characterized in that: described reparation electrode (3) adds pipe (8) by oxidant and links together, and links to each other with corresponding cathodic region control valve (5) or anode region control valve (6).
4. the batch-type prosthetic device of contaminated soil according to claim 2 is characterized in that: described porous electrode one (11) and porous electrode two (13) are the tabular conductive electrode of inertia.
5. the batch-type prosthetic device of contaminated soil according to claim 3 is characterized in that: described porous electrode one (11) and porous electrode two (13) are porous carbon electrodes, graphite electrode or stainless steel electrode.
6. the batch-type prosthetic device of contaminated soil according to claim 2 is characterized in that: the Width porous electrode one (11) of described clamping plate one (12) and clamping plate two (14) and the large 10cm of spacing of porous electrode two (13).
7. the batch-type prosthetic device of contaminated soil according to claim 2, it is characterized in that: described oxidant adds pipe (8), and its section of tubing that is fixed on base plate (16) is even perforation structure.
8. the batch-type prosthetic device of contaminated soil according to claim 2, it is characterized in that: described filter membrane (10) is microfiltration membranes or milipore filter.
9. the batch-type prosthetic device of contaminated soil according to claim 2, it is characterized in that: described power supply wiring mouth (11) links to each other with porous electrode two (13) with porous electrode one (9), makes porous electrode one (9) and porous electrode two (13) make as a whole common formation negative electrode or anode.
10. the batch-type restorative procedure of a contaminated soil is characterized in that comprising the steps:
A, the reparation electrode (3) of pool wall both sides, electrochemical rehabilitation pond (1) is connected respectively and link to each other with corresponding cathodic region control valve (5) or anode region control valve (6), as negative electrode and anode;
B, between each electrode, evenly put into the contaminated soil of processing through crushing screening;
After C, Jiang Shui, electrolyte and acid mix in tube mixer, join in the electrochemical rehabilitation pond (1), adjusting soil moisture content is 60%～80%, and the pH value of adjusting soil system is 3～4;
D, startup power supply, control voltage is 15V, electric current is 100mA, carries out electronic reparation reaction;
E, different according to pending polluter in the soil, select respectively to open cathodic control valve (5) or anodic control valve (6), make oxidant enter the electrode cavity (17) that each is repaired, oxidant is removed polluter in electrode zone and migration polluter generation redox reaction so far;
After F, redox are finished, will repair electrode (3) cleaning and with after the soil removing of having repaired in electrochemical rehabilitation pond (1), carry out the soil remediation work of next round.
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| CN201310229265.4A CN103302091B (en) | 2013-06-09 | 2013-06-09 | Sequencing-batch polluted soil remediation method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624076A (en) * | 2013-11-07 | 2014-03-12 | 江苏大学 | Remediation method of soil polluted by polybrominated diphenyl ethers |
| CN104353662A (en) * | 2014-10-20 | 2015-02-18 | 河海大学 | Electrokinetic soil heavy metal remedying reaction device |
| CN108356069A (en) * | 2018-01-30 | 2018-08-03 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity computational discrimination method |
| CN108380650A (en) * | 2018-01-30 | 2018-08-10 | 上海岩土工程勘察设计研究院有限公司 | The points distributing method that Polluted Soil stir in situ uniformity differentiates |
| CN108398539A (en) * | 2018-01-30 | 2018-08-14 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity evaluation method |
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| US5584980A (en) * | 1994-12-05 | 1996-12-17 | E. I. Du Pont De Nemours And Company | Electric field method and apparatus for decontaminating soil |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103624076A (en) * | 2013-11-07 | 2014-03-12 | 江苏大学 | Remediation method of soil polluted by polybrominated diphenyl ethers |
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| CN108398539A (en) * | 2018-01-30 | 2018-08-14 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity evaluation method |
| CN108398539B (en) * | 2018-01-30 | 2023-09-22 | 上海勘察设计研究院(集团)有限公司 | Polluted soil in-situ stirring uniformity evaluation method |
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Effective date of registration: 20170527 Address after: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee after: JIANGSU University Address before: 116299 Zhenxing street, Pulandian Bay Industrial Zone, Dalian, Liaoning, China, No. 16 Patentee before: DALIAN DEETOP HEAVY INDUSTRY Co.,Ltd. |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Yue Inventor after: Han Hongpeng Inventor after: Li Jindian Inventor after: Pang He Inventor after: Yang Qiuyu Inventor before: Xie Qingjie Inventor before: Jiang Zhihui Inventor before: Wu Chundu Inventor before: Yao Yifan Inventor before: Ye Dan Inventor before: Huang Xiaolong |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170612 Address after: 116299, 16, Zhenxing street, Bay Industrial Park, Pulandian District, Liaoning, Dalian Patentee after: DALIAN DEETOP HEAVY INDUSTRY Co.,Ltd. Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: Jiangsu University |
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| TR01 | Transfer of patent right | ||
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Effective date of registration: 20180105 Address after: Dalian high tech Industrial Park in Liaoning province 116023 Guang Xian Lu No. 133 building 21 room 2014, Cerberus Patentee after: DALIAN DEETOP ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 116299, 16, Zhenxing street, Bay Industrial Park, Pulandian District, Liaoning, Dalian Patentee before: DALIAN DEETOP HEAVY INDUSTRY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |