CN108480388A - A kind of method of repairing organic polluted soil - Google Patents
A kind of method of repairing organic polluted soil Download PDFInfo
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- CN108480388A CN108480388A CN201810218048.8A CN201810218048A CN108480388A CN 108480388 A CN108480388 A CN 108480388A CN 201810218048 A CN201810218048 A CN 201810218048A CN 108480388 A CN108480388 A CN 108480388A
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- Prior art keywords
- medicament
- organic polluted
- polluted soil
- sulfate
- soil
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- 239000002689 soil Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003814 drug Substances 0.000 claims abstract description 101
- 238000000605 extraction Methods 0.000 claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 50
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims abstract description 47
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 32
- 230000008929 regeneration Effects 0.000 claims abstract description 27
- 238000011069 regeneration method Methods 0.000 claims abstract description 27
- 230000004913 activation Effects 0.000 claims abstract description 23
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 238000011109 contamination Methods 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 8
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 8
- 235000011151 potassium sulphates Nutrition 0.000 claims description 8
- 239000012190 activator Substances 0.000 claims description 7
- 238000005341 cation exchange Methods 0.000 claims description 7
- 238000010525 oxidative degradation reaction Methods 0.000 claims description 7
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 5
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 12
- 238000005067 remediation Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 2
- 238000001994 activation Methods 0.000 description 20
- 239000000243 solution Substances 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 6
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000356 contaminant Substances 0.000 description 5
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 5
- 235000019394 potassium persulphate Nutrition 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000003929 acidic solution Substances 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 239000003637 basic solution Substances 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011368 organic material Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000003460 sulfonic acids Chemical class 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- FTOVXSOBNPWTSH-UHFFFAOYSA-N benzo[b]fluoranthene Chemical compound C12=CC=CC=C1C1=CC3=CC=CC=C3C3=C1C2=CC=C3 FTOVXSOBNPWTSH-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- LPXYXBZAXFTFKH-UHFFFAOYSA-N ClC=1C(=C(C(=NC1)C(=O)O)C(=O)O)Cl Chemical compound ClC=1C(=C(C(=NC1)C(=O)O)C(=O)O)Cl LPXYXBZAXFTFKH-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003987 organophosphate pesticide Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- AXFBAIOSECPASO-UHFFFAOYSA-N pentacyclo[6.6.2.02,7.04,16.011,15]hexadeca-1(14),2(7),3,5,8(16),9,11(15),12-octaene Chemical compound C1=C(C=C23)C4=C5C3=CC=CC5=CC=C4C2=C1 AXFBAIOSECPASO-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 229960002415 trichloroethylene Drugs 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of method of repairing organic polluted soil, belongs to organic polluted soil and repairs field.The method of the invention is using sulfate as raw material medicament, the persulfate generated using activated carbon activation electrolytic, persulfate oxidation degradable organic pollutant is reduced to sulfate simultaneously, through extraction system sulfate pumpback liquid by pumpback to medicament electrolytic regeneration reactor, realizes and sulfate medicament is recycled.The method of the invention improves remediation efficiency of the persulfate to organic polluted soil, and raw material medicament is Ke Xunhuanliyong, and medicament use cost is low, and this method can be used for soil in-situ reparation and can also be used for soil heterotopic reparation, applied widely.
Description
Technical field
The present invention relates to a kind of methods of repairing organic polluted soil, belong to organic polluted soil and repair field.
Background technology
During being engaged in industrial and agricultural production and life, the various organic matters that can be discharged into environment pass through atmospheric sedimentation, dirt
Water is irrigated and the number of ways such as agricultural of sludge the like waste enter in soil, to cause soil organic contamination.To organic dirt
It contaminates soil to implement to repair, for blocking pollutant to enter food chain, prevents from threatening damage to animals and plants and human life health
The protection of evil and promotion land resource has important practical significance with sustainable development.
Currently, feasible organic polluted soil recovery technique includes mainly biological prosthetic, peripheral doses on theory and technology
Chemical remediation and its between comprehensive repair technology, wherein chemical oxidation recovery technique due to its high efficiency, low selectivity, repair
The factors such as the multiple period is short and be taken seriously.It is disclosed in relation to the patent of persulfate renovation of organic pollution soil in terms of, invention
103624073 B of patent CN disclose the simulation test of persulfate hot steam activation advanced oxidation showering contaminated soil
Device and its simulation experiment method, 103752601 B of CN disclose a kind of for organic compound in rehabilitating soil and/or water
The method of pollution, 105478457 A of CN, which are disclosed, a kind of repairing the method for organophosphorus pesticide pollution soil, CN 104624634
B discloses a kind of chemical oxidation restorative procedure of organic polluted soil and 105174416 B of CN are disclosed and a kind of being based on support type
Activated carbon catalysis persulfate is degraded the method for dichloro quinolinic acid organic pollution, above-mentioned patent all refer to using persulfate or
The organic pollution in persulfate oxidation degradation treatment soil is activated, but does not refer to the circulation and stress for repairing medicament and again profit
With.On the one hand, it is chemical remediation medicament directly to use persulfate, very to the oxidative degradation removal rate of organic contaminants in soil
Big degree depends on the dosage of persulfate, when pollutant in soil content is higher, to obtain ideal repairing effect, persulfuric acid
The dosage of salt will also increase therewith, and persulfate is produced from electrolysis, and the dosage of persulfate is big, also imply that more
Energy consumption, cause directly high using the rehabilitation cost of persulfate；On the other hand, chemical remediation medicament is a large amount of residual in the soil
It stays, soil can be caused the secondary problem such as salinization of soil occur；Activated carbon activation persulfate rarely has for organic polluted soil reparation
Report.
Invention content
The purpose of the present invention is to provide a kind of methods of repairing organic polluted soil, solve prior art organic contamination
Soil remediation reagent cost is high, it is difficult to the problem of realizing the recycling to repairing medicament and activator, specifically include with
Lower step：
（1）It opens medicament electrolytic regeneration reactor and is electrolysed sulfate liquor, output persulfate solution；
（2）Persulfate solution is input to medicament and activates device, the persulfate medicament after output activation；
（3）Persulfate medicament after activation is injected into organic polluted soil through drug-injecting system, is realized to organic contamination
The oxidative degradation of object and mineralising processing, meanwhile, the persulfate medicament after activation is reduced to sulfate；
（4）The sulfate liquor pumpback of gained will be restored as medicament extraction system to medicament electrolytic regeneration reactor, realization pair
Sulfate medicament recycles.
Preferably, medicament electrolytic regeneration reactor of the present invention includes cathode chamber and anode chamber, cathode chamber and anode chamber
Between separated by plate cation-exchange membrane, in anode chamber both sides, have medicament input port and medicament delivery outlet, medicine
Agent input port is connected to the delivery outlet of medicament extraction system, and the input port that medicament delivery outlet activates device with medicament is connected to.
Preferably, step of the present invention（1）Described in sulfate be sodium sulphate, potassium sulfate, magnesium sulfate and ammonium sulfate at least
One kind, and a concentration of 28 ~ 45wt% of sulfate liquor；When anode chamber is electrolysed sulfate, pH=3 ~ 7 of anode chamber, anode are maintained
Current density is at least 0.6A/cm2, electrolysis time is 2 ~ 4h.
Preferably, the anode of medicament electrolytic regeneration reactor of the present invention is pure platinum, titanium-based platinum plating or graphite electrode, the moon
Extremely graphite or Ti electrode.
Preferably, step of the present invention（2）It is activated carbon that Chinese medicine, which activates the activator in device, and activated carbon activates persulfuric acid
The Activating contact time of salt is 10 ~ 30min.
Preferably, activated carbon of the present invention is granular activated carbon, Powdered Activated Carbon or activated carbon fiber.
Preferably, step of the present invention（3）In be injected into organic polluted soil persulfate medicament amount be 5 ~ 50g/kg
Organic polluted soil.
Preferably, when the method for the invention is repaired for original position soil, medicament extraction system is horizontal extraction system, institute
Stating horizontal extraction system is：It is at least horizontal on the ground of contaminated site to be laid with an extraction line, the input terminal of extraction line
Mouth connects extraction device equipped with the filter membrane for preventing solid to be pumped into, the another open end of extraction line, and the output port of extraction device is logical
Cross the input port of pipeline connection electrolytic regeneration reactor.
Preferably, when the method for the invention is used for dystopy soil remediation, medicament extraction system is vertical extraction system, institute
The vertical extraction system stated is：At least positioned vertical one in the heap body of organic polluted soil column bottom or organic polluted soil
The input port section of extraction line, extraction line is overlapped with the bottom surface of organic polluted soil and input port is equipped with prevents solid
Another open end of the filter membrane of suction, extraction line connects extraction device, and the output port of extraction device passes through pipeline connection electricity
Solve the input port of regeneration reactor.
The principle of the present invention：
The present invention is generated using activated carbon (AC) catalytic activation persulfate has strong oxidizing property SO4-Basic principle it is as follows：
AC—OOH + S2O82-→ SO4·- + HSO4- + AC—OO· (1)
AC—OOH + S2O82-→ SO4·- + HSO4- + AC—O· (2)
SO4·-It can be with the degradable organic pollutant of more efficient such as following formula (3) with higher redox potential.
SO4·- + e-→ SO42-, 2.5-3.1V (3)
In addition, activated carbon itself contains metal ash content, it is also possible to which there are metals or metal ion activation persulfate to generate by force
Oxidisability SO4-Activation process.
The beneficial effects of the invention are as follows：
（1）The method of the invention is can be recycled by raw material medicament and raw material medicament of sulfate, residual quantity in the soil
It is few, soil will not be caused the secondary problem such as salinization of soil occur, medicament use cost is low；The present invention using sulfate as raw material medicament,
The organic pollution in the persulfate oxidation degradation treatment soil of electrolytic tank electrolysis sulfate generation is directly utilized, it is complete to soil
After the reparation of a cycle, persulfate is reduced to sulfate, through extraction system sulfate pumpback liquid by pumpback to medicament
Electrolytic regeneration reactor is realized and is recycled to sulfate medicament.
（2）Activated carbon activates persulfate, generates the stronger SO4 of oxidisability-, persulfate is improved to organic contamination
The remediation efficiency of soil；Activated carbon for activating persulfate is Ke Xunhuanliyong.
（3）Organic pollution soil repair system in the present invention can be used for soil in-situ reparation and can also be used for soil heterotopic to repair
It is multiple, it is applied widely.
Description of the drawings
Fig. 1 is schematic diagram when the method for the invention is used for in-situ immobilization organic material contaminated soil；
Fig. 2 is schematic diagram when the method for the invention is used for showering organic material contaminated soil earth pillar；
Fig. 3 is schematic diagram when the method for the invention is used for showering organic material contaminated soil trapezoidal heap.
Specific implementation mode
Invention is further described in detail in the following with reference to the drawings and specific embodiments, but protection scope of the present invention is simultaneously
It is not limited to the content.
The method that chemical oxidation-electrolytic regeneration of the present invention recycles repairing organic polluted soil is dirty based on organic matter
It contaminates soil repair system to realize, the organic material contaminated soil repair system includes at least medicament electrolytic regeneration reactor, medicine
Agent activates device, drug-injecting system and medicament extraction system,（As shown in Fig. 1 ~ 3）.
1 ~ 4 medicament electrolytic regeneration reactor of the embodiment of the present invention includes cathode chamber and anode chamber, cathode chamber and anode
Separated by plate cation-exchange membrane between room, in anode chamber both sides, have medicament input port and medicament delivery outlet,
Medicament input port is connected to the delivery outlet of medicament extraction system, and the input port that medicament delivery outlet activates device with medicament is connected to.
The horizontal extraction system of the embodiment of the present invention 1 ~ 4 is：It is at least horizontal on the ground of contaminated site to be laid with one
Extraction line, the input port of extraction line are equipped with the filter membrane for preventing solid to be pumped into, the another open end connection extracting of extraction line
Device, the input port that the output port of extraction device passes through pipeline connection electrolytic regeneration reactor.
Vertical extraction system described in the embodiment of the present invention 1 ~ 4 is：In organic polluted soil column bottom or organic contamination soil
At least one extraction line of positioned vertical in the heap body of earth, the input port section of extraction line and the bottom surface of organic polluted soil
It overlaps and input port is equipped with the filter membrane for preventing solid to be pumped into, another open end of extraction line connects extraction device, extracting dress
The input port that the output port set passes through pipeline connection electrolytic regeneration reactor.
Embodiment 1
It layouts, sample to certain organic polluted soil place, after testing, benzene 120mg/kg, pyrene 60mg/kg, benzo are contained in soil
[α] pyrene 90mg/kg；In-situ immobilization is implemented to the organic polluted soil place, such as attached drawing 1.Concrete operation step is as follows：
（1）It opens medicament electrolytic regeneration reactor and is electrolysed sulfate liquor, output persulfate solution；Wherein, medicament is electrolysed again
Raw reactor cathode chamber and anode chamber are using plate Nafion427 type perfluorinated sulfonic acid cation-exchange membranes as diaphragm, with the sulphur of 28wt%
Sour ammonium is anolyte, maintains pH=3 ~ 7 of anode chamber, cathode that titanium plate, anode is selected to select graphite cake, anode current close
Degree is 0.6A/cm2, it is electrolysed 4h.
（2）Persulfate solution is input to equipped with being activated in device by the medicament of activator of granular activated carbon, is contacted
Activate 15min, the persulfate medicament after output activation.
（3）Ammonium persulfate medicament after activation is injected with the dosage of 5g/kg organic polluted soils through drug-injecting system
Into organic polluted soil, realizes and the oxidative degradation of organic pollution and mineralising are handled, meanwhile, the ammonium persulfate medicine after activation
Agent is reduced to ammonium sulfate.
（4）As drug level extraction system will restore gained ammonium sulfate pumpback liquid extracting to medicament electrolytic regeneration reaction
Device realizes the recycling to ammonium sulfate medicament.
（5）It layouts, sample to organic contamination place again, detect the content of organic contaminants in soil and the pH of soil,
If organic polluted soil has reached reparation desired value, by spraying acidic solution/basic solution, quick lime or vegetation to soil
Soil is adjusted to about pH=7 by ash etc.；If not up to repairing desired value, continue to repeat step（1）~（5）, until reaching
Repair target.
Embodiment 2
Layout, sample to certain organic polluted soil place, after testing, in soil containing benzene 260mg/kg, nitrobenzene 280mg/kg,
Pyrene 180mg/kg；Showering is implemented to the organic polluted soil, such as attached drawing 2.Concrete operation step is as follows：
（1）It opens medicament electrolytic regeneration reactor and is electrolysed sulfate liquor, output persulfate solution；Wherein, medicament is electrolysed again
Raw reactor cathode chamber and anode chamber are using plate Nafion117 type perfluorinated sulfonic acid cation-exchange membranes as diaphragm, with the sulphur of 35wt%
Sour potassium is anolyte, and pH=3 ~ 7 of anode chamber, cathode is maintained to select graphite cake, anode that titanium-based is selected to plate platinum sheet, anode
Current density is 0.9A/cm2, it is electrolysed 3.0h.
（2）Potassium persulfate solution is input to equipped with being activated in device by the medicament of activator of Powdered Activated Carbon, is contacted
Activate 10min, the potassium peroxydisulfate medicament after output activation.
（3）Potassium peroxydisulfate medicament after activation is injected with the dosage of 20g/kg organic polluted soils through drug-injecting system
Into organic polluted soil, realizes and the oxidative degradation of organic pollution and mineralising are handled, meanwhile, the potassium peroxydisulfate medicine after activation
Agent is reduced to potassium sulfate.
（4）As the vertical extraction system of medicament will restore gained potassium sulfate pumpback liquid extracting to medicament electrolytic regeneration reaction
Device realizes the recycling to potassium sulfate medicament.
（5）To the Soil spot arrangement in cylinder, sampling, the content of organic contaminants in soil and the pH of soil are detected, if having
Machine contaminated soil has reached reparation desired value, then by spraying acidic solution/basic solution, quick lime or plant ash etc. to soil
Soil is adjusted to about pH=7；If not up to repairing desired value, continue to repeat step（1）~（5）, repaired until reaching
Target.
Embodiment 3
It layouts, sample to certain organic polluted soil place, after testing, benzo [b] fluoranthene 200mg/kg fluoranthene is contained in soil
230mg/kg, benzo [α] pyrene 160mg/kg；Showering is implemented to the organic polluted soil, such as attached drawing 3.Concrete operation step
It is as follows：
（1）It opens medicament electrolytic regeneration reactor and is electrolysed sulfate liquor, output persulfate solution；Wherein, medicament is electrolysed again
Raw reactor cathode chamber and anode chamber are using plate polytetrafluoroethylene (PTFE) cation-exchange membrane as diaphragm, with the sulfate of 45wt%（Its
In, sodium sulphate 25wt%, magnesium sulfate 20wt%）For anolyte, pH=3 ~ 7 of anode chamber, cathode is maintained to select graphite cake,
Anode selects platinum sheet, anodic current density 1.5A/cm2, it is electrolysed 3.5h.
（2）Persulfate solution is input to equipped with being activated in device by the medicament of activator of activated carbon fiber, is contacted
Activate 30min, the persulfate medicament after output activation.
（3）Persulfate medicament after activation is injected with the dosage of 50g/kg organic polluted soils through drug-injecting system
Into organic polluted soil, realizes and the oxidative degradation of organic pollution and mineralising are handled, meanwhile, the persulfate medicine after activation
Agent is reduced to sulfate.
（4）As the vertical extraction system of medicament will restore gained sulfate pumpback liquid extracting to medicament electrolytic regeneration reaction
Device realizes the recycling to sulfate medicament.
（5）To the Soil spot arrangement in trapezoidal heap body, sampling, the content of organic contaminants in soil and the pH of soil are detected,
If organic polluted soil has reached reparation desired value, by spraying acidic solution/basic solution, quick lime or vegetation to soil
Soil is adjusted to about pH=7 by ash etc.；If not up to repairing desired value, continue to repeat step（1）~（5）, until reaching
Repair target.
Embodiment 4
It layouts, sample to certain organic polluted soil place, after testing, trichloro ethylene 200mg/L, tetrachloro-ethylene are contained in soil
150mg/L；Showering is implemented to the organic polluted soil place, such as attached drawing 2.Concrete operation step is as follows：
（1）It opens medicament electrolytic regeneration reactor and is electrolysed sulfate liquor, output persulfate solution；Wherein, medicament is electrolysed again
Raw reactor cathode chamber and anode chamber are using plate Nafion427 type perfluorinated sulfonic acid cation-exchange membranes as diaphragm, with the sulphur of 28wt%
Sour potassium is anolyte, and pH=3 ~ 7 of anode chamber, cathode and anode is maintained to select graphite cake, anodic current density 1.3A/
cm2, it is electrolysed 2.5h.
（2）Persulfate solution is input to equipped with being activated in device by the medicament of activator of granular activated carbon, is contacted
Activate 15min, the persulfate medicament after output activation.
（3）Potassium peroxydisulfate medicament after activation is injected with the dosage of 30g/kg organic polluted soils through drug-injecting system
Into organic polluted soil, realizes and the oxidative degradation of organic pollution and mineralising are handled, meanwhile, the potassium peroxydisulfate medicine after activation
Agent is reduced to potassium sulfate.
（4）As the vertical extraction system of medicament will restore gained potassium sulfate pumpback liquid extracting to medicament electrolytic regeneration reaction
Device realizes the recycling to potassium sulfate medicament.
（5）It layouts, sample to organic contamination place again, detect the content of organic contaminants in soil and the pH of soil,
If organic polluted soil has reached reparation desired value, by spraying acidic solution/basic solution, quick lime or vegetation to soil
Soil is adjusted to about pH=7 by ash etc.；If not up to repairing desired value, continue to repeat step（1）~（5）, until reaching
Repair target.
Persulfate solution renovation of organic pollution soil is relatively directly utilized, is completed to above-mentioned each implementation using the method for the present invention
The reparation up to standard of organic polluted soil in example, on the one hand, shorten 2 ~ 3 days repairing efficiencies, on the other hand, soil is repaired in gained
In earth, 90 ~ 95.5% sulfate residual is reduced.
The specific implementation mode of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula can also be done without departing from the purpose of the present invention within the knowledge of a person skilled in the art
Go out various change.
Claims (9)
1. a kind of method of repairing organic polluted soil, which is characterized in that specifically include following steps：
（1）It opens medicament electrolytic regeneration reactor and is electrolysed sulfate liquor, output persulfate solution；
（2）Persulfate solution is input to medicament and activates device, the persulfate medicament after output activation；
（3）Persulfate medicament after activation is injected into organic polluted soil through drug-injecting system, is realized to organic contamination
The oxidative degradation of object and mineralising processing, meanwhile, the persulfate medicament after activation is reduced to sulfate；
（4）The sulfate liquor pumpback of gained will be restored as medicament extraction system to medicament electrolytic regeneration reactor, realization pair
Sulfate medicament recycles.
2. the method for repairing organic polluted soil according to claim 1, it is characterised in that：The medicament electrolytic regeneration is anti-
It includes cathode chamber and anode chamber to answer device, is separated by plate cation-exchange membrane between cathode chamber and anode chamber, in anode chamber
Both sides have medicament input port and medicament delivery outlet, and medicament input port is connected to the delivery outlet of medicament extraction system, medicament
The input port that delivery outlet activates device with medicament is connected to.
3. the method for repairing organic polluted soil according to claim 1, it is characterised in that：Step（1）Described in sulfuric acid
Salt is at least one of sodium sulphate, potassium sulfate, magnesium sulfate and ammonium sulfate, and a concentration of 28 ~ 45wt% of sulfate liquor；Anode
When room is electrolysed sulfate, pH=3 ~ 7 of anode chamber, anodic current density is maintained to be at least 0.6A/cm2, electrolysis time is 2 ~ 4h.
4. the method for repairing organic polluted soil according to claim 1 or claim 2, it is characterised in that：Medicament electrolytic regeneration is anti-
It is pure platinum, titanium-based platinum plating or graphite electrode to answer the anode of device, and cathode is graphite or Ti electrode.
5. the method for repairing organic polluted soil according to claim 1, it is characterised in that：Step（2）Chinese medicine activates
Activator in device is activated carbon, and the Activating contact time that activated carbon activates persulfate is 10 ~ 30min.
6. the method for repairing organic polluted soil according to claim 5, it is characterised in that：The activated carbon is particle
Activated carbon, Powdered Activated Carbon or activated carbon fiber.
7. the method for repairing organic polluted soil according to claim 1, it is characterised in that：Step（3）In be injected into
The amount of the persulfate medicament of machine contaminated soil is 5 ~ 50g/kg organic polluted soils.
8. the method for repairing organic polluted soil according to claim 1, it is characterised in that：The method is used for in-situ soil
When earth is repaired, medicament extraction system is horizontal extraction system, and the horizontal extraction system is：On the ground of contaminated site at least
Level is laid with an extraction line, and the input port of extraction line is equipped with the filter membrane for preventing solid to be pumped into, and the another of extraction line opens
Mouthful end connects extraction device, the input port that the output port of extraction device passes through pipeline connection electrolytic regeneration reactor.
9. the method for repairing organic polluted soil according to claim 1, it is characterised in that：The method is for dystopy soil
When earth is repaired, medicament extraction system is vertical extraction system, and the vertical extraction system is：In organic polluted soil column bottom
Or at least one extraction line of positioned vertical in the heap body of organic polluted soil, input port section and the organic dirt of extraction line
The bottom surface of dye soil overlaps and input port is equipped with the filter membrane for preventing solid to be pumped into, another open end connection extracting of extraction line
Device, the input port that the output port of extraction device passes through pipeline connection electrolytic regeneration reactor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570222A (en) * | 2018-11-29 | 2019-04-05 | 南京工业大学 | Method for restoring organic contaminated soil by magnetic sludge carbon enhanced electric-chemical oxidation |
| CN110695077A (en) * | 2019-10-14 | 2020-01-17 | 江苏皓海检测技术有限公司 | Detection and restoration method applied to organic matter contaminated soil |
| CN112605117A (en) * | 2020-12-28 | 2021-04-06 | 昆明理工大学 | Device and method for repairing heavy metal-organic compound contaminated soil through electrochemistry and electromotion cooperation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877085A (en) * | 2012-09-24 | 2013-01-16 | 山东东岳高分子材料有限公司 | Method for preparing high-purity peroxysulphate based on electrolytic oxidation through ion-exchange membrane electrolyzer for chlor-alkali production |
| CN104787853A (en) * | 2015-03-31 | 2015-07-22 | 武汉大学 | Electrochemical method cooperated with active carbon for activating persulfate for treating organic wastewater |
| CN106140809A (en) * | 2016-09-19 | 2016-11-23 | 中国环境科学研究院 | A kind of apparatus and method using combination electrode repairing polluted soil and subsoil water |
| CN106734167A (en) * | 2016-12-26 | 2017-05-31 | 北京高能时代环境技术股份有限公司 | Strengthen repair system and technique in a kind of organic contamination place |
| CN107159697A (en) * | 2017-07-24 | 2017-09-15 | 河北煜环环保科技有限公司 | A kind of organic polluted soil and groundwater remediation method and medicament |
| CN107350278A (en) * | 2017-07-18 | 2017-11-17 | 中国地质大学（武汉） | Collaboration removes the in-situ remediation system and method for soil and groundwater organic pollution |
-
2018
- 2018-03-16 CN CN201810218048.8A patent/CN108480388A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877085A (en) * | 2012-09-24 | 2013-01-16 | 山东东岳高分子材料有限公司 | Method for preparing high-purity peroxysulphate based on electrolytic oxidation through ion-exchange membrane electrolyzer for chlor-alkali production |
| CN104787853A (en) * | 2015-03-31 | 2015-07-22 | 武汉大学 | Electrochemical method cooperated with active carbon for activating persulfate for treating organic wastewater |
| CN106140809A (en) * | 2016-09-19 | 2016-11-23 | 中国环境科学研究院 | A kind of apparatus and method using combination electrode repairing polluted soil and subsoil water |
| CN106734167A (en) * | 2016-12-26 | 2017-05-31 | 北京高能时代环境技术股份有限公司 | Strengthen repair system and technique in a kind of organic contamination place |
| CN107350278A (en) * | 2017-07-18 | 2017-11-17 | 中国地质大学（武汉） | Collaboration removes the in-situ remediation system and method for soil and groundwater organic pollution |
| CN107159697A (en) * | 2017-07-24 | 2017-09-15 | 河北煜环环保科技有限公司 | A kind of organic polluted soil and groundwater remediation method and medicament |
Non-Patent Citations (2)
| Title |
|---|
| 《基础化学》编写组: "《基础化学 上册》", 31 May 1981, 上海科学技术出版社 * |
| 胡宏祥等: "《环境土壤学》", 31 July 2013, 合肥工业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570222A (en) * | 2018-11-29 | 2019-04-05 | 南京工业大学 | Method for restoring organic contaminated soil by magnetic sludge carbon enhanced electric-chemical oxidation |
| CN110695077A (en) * | 2019-10-14 | 2020-01-17 | 江苏皓海检测技术有限公司 | Detection and restoration method applied to organic matter contaminated soil |
| CN112605117A (en) * | 2020-12-28 | 2021-04-06 | 昆明理工大学 | Device and method for repairing heavy metal-organic compound contaminated soil through electrochemistry and electromotion cooperation |
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