CN106694542A - Device for restoring soil contaminated by organic arsenic compounds and method for achieving restoration by means of device - Google Patents
Device for restoring soil contaminated by organic arsenic compounds and method for achieving restoration by means of device Download PDFInfo
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- CN106694542A CN106694542A CN201710004377.8A CN201710004377A CN106694542A CN 106694542 A CN106694542 A CN 106694542A CN 201710004377 A CN201710004377 A CN 201710004377A CN 106694542 A CN106694542 A CN 106694542A
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- 239000002689 soil Substances 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 85
- 150000001495 arsenic compounds Chemical class 0.000 title abstract description 6
- 229940093920 gynecological arsenic compound Drugs 0.000 title abstract 3
- 239000000126 substance Substances 0.000 claims description 103
- 238000012545 processing Methods 0.000 claims description 63
- 229910052785 arsenic Inorganic materials 0.000 claims description 58
- 241000737259 Pteris vittata Species 0.000 claims description 54
- 150000001875 compounds Chemical class 0.000 claims description 50
- 238000012546 transfer Methods 0.000 claims description 47
- 241000196324 Embryophyta Species 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 21
- 239000011358 absorbing material Substances 0.000 claims description 19
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- 230000001590 oxidative effect Effects 0.000 claims description 15
- 239000007800 oxidant agent Substances 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 241000258920 Chilopoda Species 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000013043 chemical agent Substances 0.000 abstract 6
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 31
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 14
- 239000012028 Fenton's reagent Substances 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 9
- 238000005067 remediation Methods 0.000 description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 208000008316 Arsenic Poisoning Diseases 0.000 description 1
- 201000009030 Carcinoma Diseases 0.000 description 1
- 240000001371 Chamaedaphne calyculata Species 0.000 description 1
- 235000013691 Chamaedaphne calyculata var. angustifolia Nutrition 0.000 description 1
- 235000013685 Chamaedaphne calyculata var. latifolia Nutrition 0.000 description 1
- 235000013687 Chamaedaphne calyculata var. nana Nutrition 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 235000011756 Vitis shuttleworthii Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009393 electroremediation Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000002307 prostate Anatomy 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 210000003932 urinary bladder Anatomy 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Mycology (AREA)
- Botany (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of soil restoration, in particular to a device for restoring soil contaminated by organic arsenic compounds. The device comprises a centralized treatment shed and multiple treatment hoods which are arranged in the centralized treatment shed at intervals, and the treatment hoods are equipped with multiple microwave restoration devices; and the device further comprises multiple chemical agent conveying pipelines and multiple chemical agent output pipelines, the chemical agent conveying pipelines penetrate through the upper portions of the side walls of the treatment hoods to extend into the interiors of the treatment hoods, the chemical agent output pipelines penetrate through the lower portions of the side walls of the treatment hoods to extend into the interiors of the treatment hoods, and the side walls of the chemical agent conveying pipelines and the side walls of the chemical agent output pipelines are each provided with multiple injection orifices. The invention further provides a method for restoring the soil contaminated by the organic arsenic compounds by means of the restoration device. By means of the device and the method, the standby time of the soil is shortened, resource waste is reduced, the restoration time is shortened, the restoration efficiency is improved, and the restoration effect is improved.
Description
Technical field
The present invention relates to technical field of soil remediation, and in particular to a kind of prosthetic device of organoarsenium compound contaminated soil
And the method repaired with it.
Background technology
Soil is not only a kind of agricultural production resources, is also a kind of environmental key-element.Most pollutant is final in the world
It is trapped in soil, causes what soil turned into various man-made pollutants and natural pollutant on the earth to collect ground, wherein, in recent years
The endemic arsenic poisoning event for taking place frequently makes people gradually recognize the harm of arsenic pollution.Arsenic pollution refers to by arsenic or its compound institute
The environmental pollution for causing.Arsenic and the exploitation containing arsenic metal, smelt, with arsenic or arsenic compound make the glass of raw material, pigment, active compound,
The processes such as the production and burning of coal of paper, can all produce arsenic-containing waste water, waste gas and waste residue, and environment is polluted.Due to
Arsenic in exploitation, processing, it is largely remained in soil using, the process such as discarded, is caused in the extensive use of many industries
Arsenic in Soil pollution generally existing in world wide.Necessary element in arsenic and inorganic matter, its being present in excess in vivo can
Cause the diseases such as cutaneum carcinoma, bladder, liver, kidney, lung and prostate and coronary artery, be during this researcher pays special attention to soil
The improvement and reparation of arsenic pollution.
Traditional soil restoring technology is generally divided into three classes, is respectively peripheral doses technology, chemical remediation technology and life
Thing recovery technique, wherein, peripheral doses technology refers to by heating, turning over the physical processes such as throwing by pollutant (particularly organic dirt
Dye thing) technology that removes or be separate from soil, and heating using microwave reparation is used as a new peripheral doses technology, it has
Quick heating, temperature are high, temperature uniformity is strong, the thermal efficiency is high, operation is flexible and can be organo-arsenic the advantages of small effect on environment
Compound provides good oxidation reaction condition.Chemical technology mainly has soil solidification/stabilization technology, elution technique, oxidation also
Former technology, Photocatalyst and Electroremediation technology emerging in recent years.Bioremediation technology then mainly includes planting
The technologies such as thing reparation, microorganism remediation, Co-bioremediation.However, practice have shown that above-mentioned any one reparation skill is used alone
Art is all difficult to organoarsenium compound of thoroughly degrading.
Therefore, Chinese patent literature CN103639182 discloses a kind of for the multiple joint containing arsenic organic matter in soil
Repair system.The repair system is made up of Microwave method system, chemical oxidation system and phytoremediation system；Microwave method system
System is treated rehabilitating soil and is heated, and collects the gas of volatile organism generation, and to oxidant is injected in soil, makes containing arsenic
There is oxidation reaction in organic matter, trivalent arsenic is oxidized into pentavalent arsenic under microwave catalysis, then by planting super enriching plant centipede
Fern is enriched with pentavalent arsenic, and Microwave method system and phytoremediation system interval be alternately.However, the technology is mainly used in original
Position is repaired, and it is usually directly to be carried out above contaminated soil to repair, and because repairing efficiency is more long, the soil is only completed
Could again be come into operation after reparation, cause certain wasting of resources；And present Microwave method is all on direct irradiation soil
The top layer in portion, microwave needs to penetrate whole soil horizon and the contaminated soil of lower floor could be repaired, oxidant, catalyst and micro-
Ripple absorbing material is distributed irregular in contaminated soil, and the oxidation of trivalent arsenic is insufficient, and it is present, and remediation efficiency is low to be lacked
Fall into；Super enriching plant is individually planted, and still needs to coordinate Microwave method during harvesting, relatively costly.
The content of the invention
It is an object of the invention to solve, soil restoring device remediation efficiency in the prior art is low, high cost defect, from
And a kind of prosthetic device of organoarsenium compound contaminated soil is provided.
The present invention also aims to solve, contaminated soil standby time of the prior art is more long, cause certain money
Source wastes, and microwave irradiating time is long, and the oxidation of trivalent arsenic is insufficient, and remediation efficiency is low, super enriching plant harvesting interval time
It is short, the defect of high cost, so as to provide a kind of restorative procedure of organoarsenium compound contaminated soil.
Therefore, the invention provides a kind of prosthetic device of organoarsenium compound contaminated soil, including, focus on canopy and
The some spaced processing cup focused in canopy is arranged at, the processing cup is equipped with several Microwave method devices；
Also include some chemicals transfer pipelines and chemicals output pipe, the chemicals transfer pipeline and change
Length of schooling agent output pipe is each passed through the side wall upper part of the processing cup and bottom extends to the inside of the processing cup, describedization
The arrival end of length of schooling agent output pipe is connected with the chemicals reserve tank being arranged at outside the processing cup, the chemistry system
The port of export of agent output pipe is connected with the chemicals collection box being arranged at outside the processing cup, and the chemicals
Some jets are provided with the side wall of transfer pipeline and chemical reagent output pipe.
In the prosthetic device of described organoarsenium compound contaminated soil, the chemicals transfer pipeline includes catalyst
Transfer pipeline and oxidant transfer pipeline, accordingly, the chemicals reserve tank includes catalyst inventory case and oxidant
Reserve tank, catalyst delivery line and oxidant transfer pipeline inside the processing cup are located in same level.
In the prosthetic device of described organoarsenium compound contaminated soil, the chemicals transfer pipeline and chemicals
Output pipe is PVC materials, does not interfere with the efficiency of heating using microwave.
In the prosthetic device of described organoarsenium compound contaminated soil, the distance between adjacent processing cup is 2-2.5m,
The installation of instant microwave prosthetic device and the operation of operating personnel.
In the prosthetic device of described organoarsenium compound contaminated soil, some Microwave method devices are respectively arranged at
On the roof and side wall of the processing cup, to carry out Microwave method to the top of processing cup inside soil and sidepiece simultaneously.
In the prosthetic device of described organoarsenium compound contaminated soil, the bottom for focusing on canopy is equipped with antiseepage
Film layer, to avoid being oozed under the organoarsenium compound and chemicals in mound.
A kind of method repaired to organoarsenium compound contaminated soil using above-mentioned prosthetic device, including,
Excavate organo-arsenic contaminated soil, be transported to it is described focus on canopy, in the inside heap of each processing cup
Up-small and down-big trapezoidal mound is accumulated into, the height of trapezoidal mound is that, no more than 2m, compacting factor is no more than 0.6；After excavation
New soil is backfilled in soil, to enable that the block soil is utilized in time, is unlikely to idle.
Chemicals transfer pipeline inside the processing cup is located at the top of the trapezoidal mound, and chemistry is made
Agent is delivered to the diverse location in the trapezoidal mound from top to bottom under self gravitation effect, inside the processing cup
Chemicals output pipe is located at the bottom of the trapezoidal mound, and chemicals is recycled into the chemistry under suction function
Recycled in preparation collection box；Microwave method device is opened simultaneously in chemicals course of conveying, when the trapezoidal soil
The temperature and humidity that the temperature sensor and humidity sensor that heap inside is set monitor in the trapezoidal mound reaches the
During one predetermined value, after maintaining the scheduled time, the Microwave method device is sent a signal to, the Microwave method device stops adding
Heat；Trapezoidal mound is placed in a space for relative closure, can better control over the temperature and humidity of inside.
When second predetermined value is dropped under the temperature sensor monitors to the temperature in the trapezoidal mound, in above-mentioned warp
The Pteris vittata L cultivated in advance is planted on the top of the trapezoidal mound crossed after Microwave method and sidepiece, the blade area of the Pteris vittata L is big
In the blade area 10-20% of common Pteris vittata L, adjacent two plants of Pteris vittata Ls are spaced 8-10cm, a Wu were pruned every 20-30 days
The leaf of centipede fern, untill the Pteris vittata L blade of whole strain is enriched with organoarsenium compound completely, plants new Pteris vittata L again.
Upper Pteris vittata L is planted after the cooling of mound temperature, and its tachyauxesis is made using the advantage for focusing on canopy, such that it is able to make reparation work
Work is not influenceed by seasonal weather condition, can be carried out throughout the year, finally plays the purpose of rehabilitating soil.
In the described method repaired to organoarsenium compound contaminated soil, bury attached inside the trapezoidal mound
There is a microwave absorbing material, the mass ratio of the microwave absorbing material and the catalyst is 50:1-5；
Wherein, the microwave absorbing material is any one or more in ferrite, carborundum or carbon black；The catalyst
For in sodium carbonate, potassium carbonate, NaOH, potassium hydroxide or sodium metasilicate any one or more.Microwave absorbing material absorbs microwave,
Temperature is transmitted in soil, soil is brought rapidly up, the presence of catalyst improves the efficiency of microwave absorption.
In the described method repaired to organoarsenium compound contaminated soil, in the Microwave method step,
The trapezoidal mound is heated to 400-500 DEG C by the Microwave method device, and is kept, during the heating of the Microwave method device
Between be 2-3 hours.
In the described method repaired to organoarsenium compound contaminated soil, in the side for focusing on canopy also
It is provided with the isolated area for cultivating Pteris vittata L.The cultivation area of Pteris vittata L is isolated with the operation area for focusing on canopy, to prevent
Pteris vittata L begins to be enriched with organoarsenium compound in growth phase, influences the repairing effect in later stage.
Technical solution of the present invention, has the following advantages that：
1. the prosthetic device of the organoarsenium compound contaminated soil that the present invention is provided, focuses on canopy and some processing cups
Set, realize the showering of organoarsenium compound contaminated soil, reduce the standby time of soil；Some chemicals are defeated
Send pipeline to each extend to processing cup inside to set, chemicals directly can be delivered to specified location, more promptly by three
Valency arsenic is oxidized to pentavalent arsenic, improves remediation efficiency.Some chemicals output pipes will be not sharp under appropriate suction function
Chemicals is delivered to chemicals collection box and reuses, and reduces rehabilitation cost.
2. the restorative procedure that the present invention is provided, the wherein oxidant of diverse location, catalyst are being distributed in by trapezoidal mound
And be arranged on processing cup inside diverse location several Microwave method devices in the presence of carry out heating using microwave oxidation, due to
Chemicals transfer pipeline offers multiple outlets towards the position of trapezoidal mound, so that catalyst and oxidant are chemically
It is not required to continue to move in the horizontal direction just mix to trapezoidal mound lower motion after being exported in preparation transfer pipeline, more
Plus trivalent arsenic is promptly oxidized to pentavalent arsenic, reduce soil toxicity；Several Microwave method devices are simultaneously to trapezoidal mound
Diverse location sends microwave, shortens the time of microwave penetration soil, improves remediation efficiency.Organo-arsenic contaminated soil is dumped
Product is up-small and down-big trapezoidal, can not only ensure to pile up firm, and soil is difficult to glide, and also causes that the temperature of soil is able to quickly
Raise, so as to improve the oxidation rate of oxidant, and then improve the place of organoarsenium compound in organo-arsenic contaminated soil
Reason rate.And the isolated area being provided with canopy for cultivating Pteris vittata L is focused on, special improvement Pteris vittata L etc. of cultivating is for repairing
Multiple plant, its blade is big, to the good absorbing effect of organoarsenium compound, a leaf for Pteris vittata L is pruned every 20-30 days,
The blade of enrichment organoarsenium compound has so not only been cut in time, it is to avoid secondary pollution, and remained a part of blade, prolonged
Every plant of repair time of Pteris vittata L is grown, has been that time enough has been reserved in the growth of young leaves, reduced cost；Plantation enrichment pentavalent
The arsenic of trapezoidal mound diverse location can be enriched to plant by the plant of arsenic rapidly, efficiently on the diverse location of trapezoidal mound
On leatherleaf, treat that blade collection arsenic reaches a certain amount of, can gather in and do later stage treatment.The Microwave method combination chemical oxidization method is simultaneously combined
The method of plant soil restoration effectively can do advanced treating to organic matter in soil.
3. the restorative procedure that the present invention is provided, is transported to focus on after organo-arsenic contaminated soil is dug out and repaiied in canopy
It is multiple, new soil is backfilled in the soil after excavation, while being repaired to organo-arsenic contaminated soil, recent fill region can also be normal
It is utilized, shortens the standby time of soil, reduces the wasting of resources；And organo-arsenic contaminated soil is divided into multiple trapezoidal soil
Heap, and focus on a closing space respectively and repaired, so it is easy to the temperature and humidity in control process cover, accurately open micro-
Ripple prosthetic device, and realize multigroup while operation, arranges more Microwave method devices so that microwave is more in a limited space
Direction is irradiated, and is heated evenly, and Microwave method speed is fast.
4. the present invention provide restorative procedure, in organo-arsenic contaminated soil add catalyst in containing sodium salt and/
Or sylvite, and it is 50 to limit the mass ratio of microwave absorbing material and catalyst:1-5, can not only so promote microwave absorption material
The heat absorption function of material, and the oxidative function of oxidant can be promoted, so that microwave absorbing material, catalyst and oxidant
Cooperate, improve the treatment effeciency of organoarsenium compound in organo-arsenic contaminated soil, improve repairing effect.
It is following by taking the test group and control group of embodiment 1 as an example proving the technique effect of the method for the present invention.
Test group：A kind of restorative procedure of organoarsenium compound contaminated soil, comprises the following steps：
Excavate organo-arsenic contaminated soil, be transported to put up in advance focus on canopy, return in the soil after excavation
Fill out new soil, and be piled into that several intervals 2m sets it is up-small and down-big trapezoidal, trapezoidal mound highly is 2.0m.Each trapezoidal soil
A processing cup is provided with outside heap, several trapezoidal mound inside temperature for being used to monitor in processing cup are provided with each processing cup
The temperature sensor and humidity sensor of degree and humidity；Several Microwave methods are set on the top of the processing cup and side wall
Device.The bottom for focusing on canopy is equipped with barrier film layer.
Some chemicals transfer pipelines and chemicals output pipe be each passed through the processing cup side wall upper part and
Bottom extends to the inside of the processing cup, the arrival end of the chemicals transfer pipeline be arranged at outside the processing cup
Chemicals reserve tank be connected, the port of export and the change being arranged at outside the processing cup of the chemicals output pipe
Length of schooling agent collection box is connected, and if being provided with the side wall of the chemicals transfer pipeline and chemical reagent output pipe
Dry-spray mouthful, the i.e. jet of chemicals transfer pipeline is down-set, and the jet of chemicals output pipe sets up.
The upper surface of trapezoidal mound has been arranged side by side two Baltimore grooves, and two chemicals transfer pipelines are respectively placed at two spills
In groove, what is conveyed in a chemicals transfer pipeline is sodium carbonate, and what is conveyed in another chemicals transfer pipeline is fragrant
Pause reagent, to cause that Fenton reagent and sodium carbonate, simultaneously to the trapezoidal mound delivered inside, are buried inside the trapezoidal mound
With microwave absorbing material ferrite, the mass ratio of the microwave absorbing material and the catalyst is 50:1；.In chemicals
Microwave method device is opened in course of conveying simultaneously, is heated 3 hours, when the temperature that the trapezoidal mound inside is set is passed
When sensor and humidity sensor monitor that the temperature and humidity in the trapezoidal mound respectively reaches 400 DEG C and 40%, maintain
20min, now the trivalent arsenic in soil in organoarsenium compound have been converted into pentavalent arsenic, send a signal to the Microwave method
Device, the Microwave method device stops heating.Two chemicals output pipes of trapezoidal mound bottom are arranged in negative pressure
Unemployed sodium carbonate and Fenton reagent are recycled in chemicals collection box under effect are recycled.
The isolated area being provided with canopy for cultivating Pteris vittata L is focused on, when the temperature sensor monitors to the ladder
When 20 DEG C are dropped at the temperature in shape mound, plant pre- on the top of the above-mentioned trapezoidal mound by after Microwave method and sidepiece
The Pteris vittata L first cultivated, the blade area 20% of the blade area more than common Pteris vittata L of the Pteris vittata L, adjacent two plants of Pteris vittata Ls
Interval 8cm, pruned a leaf for Pteris vittata L, until the Pteris vittata L blade of whole strain is enriched with organoarsenium compound completely every 20 days
Untill, new Pteris vittata L is planted again.
Control group：A kind of restorative procedure of organoarsenium compound contaminated soil, comprises the following steps：
Determine the particular location and area of organo-arsenic contaminated soil.
Microwave method device is arranged on the top of organo-arsenic contaminated soil, multiple oxidant medicine-chests pass through multiple dosings
Be transported to Fenton reagent in organo-arsenic contaminated soil by well, under the microwave action that Microwave method device sends, by organo-arsenic
Contaminated soil is heated to 500 DEG C, and keeps, and organo-arsenic contaminated soil is repaired.In organo-arsenic contaminated soil
Bury with microwave absorbing material ferrite.
The Pteris vittata L cultivated in advance, annual harvesting are planted in the above-mentioned organo-arsenic contaminated soil by after Microwave method
Pteris vittata L 3 times, coordinates microwave irradiation during harvesting.
Found by the comparison of test group and control group, organo-arsenic contaminated soil of the same area is repaired completely, compareed
Group needs 60 days, and test group is only needed 30 days；The residual quantity of the organoarsenium compound of control group is 18% in soil after reparation, examination
Group is tested only less than 2%；In one repairing efficiency, the Pteris vittata L usage amount of test group is 600 plants/acre, the usage amount of control group
It is 900 plants/acre.
Figure of description
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the front view of the prosthetic device embodiment 1 of organoarsenium compound contaminated soil of the invention；
1- focuses on canopy, the trapezoidal mounds of 2-, 21- Baltimore grooves, 3- processing cups, 4- temperature sensors, 5- humidity sensors,
6- Microwave method devices, 7- chemicals transfer pipelines, 8- chemicals output pipes, 9- Pteris vittata Ls, 10- isolated areas.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment.
Embodiment 1
A kind of restorative procedure of organoarsenium compound contaminated soil, comprises the following steps：
Excavate organo-arsenic contaminated soil, be transported to put up in advance focus on canopy 1, return in the soil after excavation
Fill out new soil, and be piled into that several intervals 2m sets it is up-small and down-big trapezoidal, the height of trapezoidal mound 2 is 2.0m.It is each trapezoidal
A processing cup 3 is provided with outside mound, several are provided with each processing cup for monitoring temperature and humidity in processing cup
Temperature sensor 4 and humidity sensor 5；Several Microwave method devices 6 are set on the top of the processing cup and side wall.Institute
State focus on canopy bottom be equipped with barrier film layer.
Some chemicals transfer pipelines 7 and chemicals output pipe 8 are each passed through the upper of the side wall of the processing cup
Portion and bottom extend to the inside of the processing cup, the arrival end of the chemicals output pipe be arranged at the processing cup
Outside chemicals reserve tank is connected, the port of export of the chemicals output pipe be arranged at outside the processing cup
Chemicals collection box be connected, and be respectively provided with the side wall of the chemicals transfer pipeline and chemicals output pipe
There are some jets, i.e. the jet of chemicals transfer pipeline is down-set, and the jet of chemicals output pipe is upward
Set.The upper surface of trapezoidal mound has been arranged side by side two Baltimore grooves 21, and two chemicals transfer pipelines are respectively placed at
In two Baltimore grooves, what is conveyed in a chemicals transfer pipeline is sodium carbonate, defeated in another chemicals transfer pipeline
What is sent is Fenton reagent, to cause Fenton reagent and sodium carbonate simultaneously to the trapezoidal mound delivered inside, in the trapezoidal soil
Buried inside heap with microwave absorbing material ferrite, the mass ratio of the microwave absorbing material and the catalyst is 50:1.
Microwave method device is opened in chemicals course of conveying simultaneously, is heated 3 hours, when described in the trapezoidal mound inside setting
When temperature sensor and humidity sensor monitor that the temperature and humidity in the trapezoidal mound respectively reaches 400 DEG C and 40%,
20min is maintained, now the trivalent arsenic in soil in organoarsenium compound has been converted into pentavalent arsenic, sends a signal to the microwave
Prosthetic device, the Microwave method device stops heating.Two chemicals output pipes for being arranged on trapezoidal mound bottom exist
Unemployed sodium carbonate and Fenton reagent are recycled in chemicals collection box under suction function are recycled.
The isolated area 10 being provided with canopy for cultivating Pteris vittata L is focused on, when the temperature sensor monitors are to described
When 20 DEG C are dropped at the temperature in trapezoidal mound, planted on the top of the above-mentioned trapezoidal mound by after Microwave method and sidepiece
The Pteris vittata L 9 cultivated in advance, the blade area 20% of the blade area more than common Pteris vittata L of the Pteris vittata L, adjacent two plants of centipedes
Fern is spaced 8cm, a leaf for Pteris vittata L is pruned every 20 days, until the Pteris vittata L blade of whole strain is enriched with organo-arsenic chemical combination completely
Untill thing, new Pteris vittata L is planted again.
Embodiment 2
A kind of restorative procedure of organoarsenium compound contaminated soil, comprises the following steps：
Excavate organo-arsenic contaminated soil, be transported to put up in advance focus on canopy, return in the soil after excavation
Fill out new soil, and be piled into that several intervals 2.5m sets it is up-small and down-big trapezoidal, trapezoidal mound highly is 1.0m.It is each trapezoidal
A processing cup is provided with outside mound, several are provided with each processing cup is used to monitor the temperature of temperature and humidity in processing cup
Degree sensor and humidity sensor；Several Microwave method devices are set on the top of the processing cup and side wall.The collection
The bottom of middle treatment canopy is equipped with barrier film layer.Some chemicals transfer pipelines and chemicals output pipe are worn respectively
The upper and lower part for crossing the side wall of the processing cup extends to the inside of the processing cup, and the chemicals transfer pipeline enters
Mouth end is connected with the chemicals reserve tank being arranged at outside the processing cup, the port of export of the chemicals output pipe
It is connected with the chemicals collection box being arranged at outside the processing cup, and the chemicals transfer pipeline and chemicals
Some jets are provided with the side wall of output pipe, i.e. the jet of chemicals transfer pipeline is down-set, chemistry system
The jet of agent output pipe sets up.The upper surface of trapezoidal mound has been arranged side by side two Baltimore grooves, two chemistry systems
Agent transfer pipeline is respectively placed in two Baltimore grooves, and what is conveyed in a chemicals transfer pipeline is potassium carbonate, hydroxide
Sodium, what is conveyed in another chemicals transfer pipeline is Fenton reagent, to cause Fenton reagent and potassium carbonate, NaOH
Simultaneously to the trapezoidal mound delivered inside, buried inside the trapezoidal mound with microwave absorbing material carborundum, it is described micro-
The mass ratio of ripple absorbing material and the catalyst is 50:5.Open Microwave method dress simultaneously in chemicals course of conveying
Put, heat 2 hours, the temperature sensor and humidity sensor set inside the trapezoidal mound monitor described trapezoidal
When temperature and humidity in mound respectively reaches 500 DEG C and 40%, 25min is maintained, now in soil in organoarsenium compound
Trivalent arsenic has been converted into pentavalent arsenic, sends a signal to the Microwave method device, and the Microwave method device stops heating.If
Two chemicals output pipes in trapezoidal mound bottom are put under suction function by unemployed potassium carbonate, NaOH
It is recycled in chemicals collection box with Fenton reagent and is recycled.
The isolated area being provided with canopy for cultivating Pteris vittata L is focused on, when the temperature sensor monitors to the ladder
When 20 DEG C are dropped at the temperature in shape mound, plant pre- on the top of the above-mentioned trapezoidal mound by after Microwave method and sidepiece
The Pteris vittata L first cultivated, the blade area 10% of the blade area more than common Pteris vittata L of the Pteris vittata L, adjacent two plants of Pteris vittata Ls
Interval 10cm, pruned a leaf for Pteris vittata L, until the Pteris vittata L blade of whole strain is enriched with organo-arsenic chemical combination completely every 30 days
Untill thing, new Pteris vittata L is planted again.
Organo-arsenic contaminated soil of the same area is repaired completely, and the present embodiment is only needed 35 days；Have in soil after reparation
The residual quantity of machine arsenic compound is 5%；In one repairing efficiency, Pteris vittata L usage amount is 500 plants/acre in the present embodiment.
Embodiment 3
A kind of restorative procedure of organoarsenium compound contaminated soil, comprises the following steps：
Excavate organo-arsenic contaminated soil, be transported to put up in advance focus on canopy, return in the soil after excavation
Fill out new soil, and be piled into that several intervals 2m sets it is up-small and down-big trapezoidal, trapezoidal mound highly is 0.6m.Each trapezoidal soil
A processing cup is provided with outside heap, several are provided with each processing cup is used to monitor the temperature of temperature and humidity in processing cup
Sensor and humidity sensor；Several Microwave method devices are set on the top of the processing cup and side wall.The concentration
The bottom for processing canopy is equipped with barrier film layer.
Some chemicals transfer pipelines and chemicals output pipe are each passed through the top of the side wall of the processing cup
With the inside that bottom extends to the processing cup, the arrival end of the chemicals transfer pipeline be arranged at outside the processing cup
The chemicals reserve tank in portion is connected, the port of export of the chemicals output pipe be arranged at outside the processing cup
Chemicals collection box is connected, and is provided with the side wall of the chemicals transfer pipeline and chemicals output pipe
Some jets, the i.e. jet of chemicals transfer pipeline is down-set, and the jet of chemicals output pipe sets upwards
Put.The upper surface of trapezoidal mound has been arranged side by side two Baltimore grooves, and two chemicals transfer pipelines are respectively placed at two
In Baltimore groove, what is conveyed in a chemicals transfer pipeline is potassium hydroxide, sodium metasilicate, another chemicals transfer pipeline
Middle conveying is Fenton reagent, to cause Fenton reagent and potassium hydroxide, sodium metasilicate simultaneously to the trapezoidal mound delivered inside,
Buried inside the trapezoidal mound with microwave absorbing material carborundum and carbon black, the microwave absorbing material and the catalyst
Mass ratio be 50:3.Open Microwave method device simultaneously in chemicals course of conveying, heat 2.5 hours, when the ladder
The temperature and humidity point that the temperature sensor and humidity sensor that shape mound inside is set are monitored in the trapezoidal mound
When not reaching 450 DEG C and 40%, 30min is maintained, now the trivalent arsenic in soil in organoarsenium compound has been converted into pentavalent
Arsenic, sends a signal to the Microwave method device, and the Microwave method device stops heating.It is arranged on trapezoidal mound bottom
Two chemicals output pipes are under suction function by unemployed potassium hydroxide, sodium metasilicate and being recycled to of Fenton reagent
Recycled in length of schooling agent collection box.
The isolated area being provided with canopy for cultivating Pteris vittata L is focused on, when the temperature sensor monitors to the ladder
When 20 DEG C are dropped at the temperature in shape mound, plant pre- on the top of the above-mentioned trapezoidal mound by after Microwave method and sidepiece
The Pteris vittata L first cultivated, the blade area 15% of the blade area more than common Pteris vittata L of the Pteris vittata L, adjacent two plants of Pteris vittata Ls
Interval 9cm, pruned a leaf for Pteris vittata L, until the Pteris vittata L blade of whole strain is enriched with organoarsenium compound completely every 25 days
Untill, new Pteris vittata L is planted again.
Organo-arsenic contaminated soil of the same area is repaired completely, and the present embodiment is only needed 38 days；Have in soil after reparation
The residual quantity of machine arsenic compound is 4%；In one repairing efficiency, Pteris vittata L usage amount is 550 plants/acre in the present embodiment.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
1. a kind of prosthetic device of organoarsenium compound contaminated soil, it is characterised in that including focusing on canopy and being arranged at collection
Some spaced processing cup in middle treatment canopy, the processing cup is equipped with several Microwave method devices；
Also include some chemicals transfer pipelines and chemicals output pipe, the chemicals transfer pipeline and chemistry are made
Agent output pipe is each passed through the side wall upper part of the processing cup and bottom extends to the inside of the processing cup, the chemistry system
The arrival end of agent transfer pipeline is connected with the chemicals reserve tank being arranged at outside the processing cup, and the chemicals is defeated
The port of export for going out pipeline is connected with the chemicals collection box being arranged at outside the processing cup, and the chemicals is conveyed
Some jets are provided with the side wall of pipeline and chemical reagent output pipe.
2. the prosthetic device of organoarsenium compound contaminated soil according to claim 1, it is characterised in that the chemistry system
Agent transfer pipeline includes catalyst delivery line and oxidant transfer pipeline, and accordingly, the chemicals reserve tank includes
Catalyst inventory case and oxidant reserve tank, catalyst delivery line and oxidant transfer pipeline inside the processing cup
In same level.
3. according to the prosthetic device of any described organoarsenium compound contaminated soils of claim 1-2, it is characterised in that described
Chemicals transfer pipeline and chemicals output pipe are PVC materials.
4. according to the prosthetic device of any described organoarsenium compound contaminated soils of claim 1-3, it is characterised in that adjacent
The distance between processing cup is 2-2.5m.
5. according to the prosthetic device of any described organoarsenium compound contaminated soils of claim 1-4, it is characterised in that some
The Microwave method device is respectively arranged on the roof of the processing cup and side wall.
6. according to the prosthetic device of any described organoarsenium compound contaminated soils of claim 1-5, it is characterised in that described
The bottom for focusing on canopy is equipped with barrier film layer.
7. it is a kind of using claim 1-6 any described prosthetic devices organoarsenium compound contaminated soil to be repaired
Method, including,
Excavate organo-arsenic contaminated soil, be transported to it is described focus on canopy, in each processing cup building up inside into
Up-small and down-big trapezoidal mound；
Chemicals transfer pipeline inside the processing cup is located at the top of the trapezoidal mound, by chemicals from
Top to bottm is delivered to the diverse location in the trapezoidal mound, and the chemicals output pipe inside the processing cup is located at
The bottom of the trapezoidal mound, chemicals is recycled in the chemicals collection box under suction function；In chemistry
Microwave method device is opened in preparation course of conveying simultaneously, the temperature sensor that sets when the trapezoidal mound inside and wet
Degree Sensor monitoring to the temperature and humidity in the trapezoidal mound reach first predetermined value when, maintain the scheduled time after, transmission
Signal to the Microwave method device, the Microwave method device stops heating；
When second predetermined value is dropped under the temperature sensor monitors to the temperature in the trapezoidal mound, above-mentioned by micro-
The Pteris vittata L that plantation is cultivated in advance on the top of the trapezoidal mound after ripple reparation and sidepiece, a centipede was pruned every 20-30 days
The leaf of fern, untill the Pteris vittata L blade of whole strain is enriched with organoarsenium compound completely, plants new Pteris vittata L again.
8. the method repaired to organoarsenium compound contaminated soil according to claim 7, it is characterised in that institute
State and buried inside trapezoidal mound with microwave absorbing material, the mass ratio of the microwave absorbing material and the catalyst is 50:1-
5；
Wherein, the microwave absorbing material is any one or more in ferrite, carborundum or carbon black；The catalyst is carbon
In sour sodium, potassium carbonate, NaOH, potassium hydroxide or sodium metasilicate any one or more.
9. the method repaired to organoarsenium compound contaminated soil according to claim 7 or 8, its feature exists
In, in the Microwave method step, the trapezoidal mound is heated to 400-500 DEG C by the Microwave method device, and is kept,
The heat time of the Microwave method device is 2-3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004377.8A CN106694542A (en) | 2017-01-04 | 2017-01-04 | Device for restoring soil contaminated by organic arsenic compounds and method for achieving restoration by means of device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004377.8A CN106694542A (en) | 2017-01-04 | 2017-01-04 | Device for restoring soil contaminated by organic arsenic compounds and method for achieving restoration by means of device |
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| CN106694542A true CN106694542A (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710004377.8A Pending CN106694542A (en) | 2017-01-04 | 2017-01-04 | Device for restoring soil contaminated by organic arsenic compounds and method for achieving restoration by means of device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139236A (en) * | 2020-09-17 | 2020-12-29 | 南开大学 | A method of microwave-enhanced Fenton oxidation technology to remediate pesticide-contaminated soil |
| CN113695384A (en) * | 2020-05-23 | 2021-11-26 | 中国环境科学研究院 | Plant restoration device and restoration method for soil polluted by heavy metal elements |
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|---|---|---|---|---|
| CN103551378A (en) * | 2013-11-20 | 2014-02-05 | 华北电力大学 | Combined microwave oxidation compound repair system and method aiming at organic arsenic pollution in soil |
| CN103639182A (en) * | 2013-12-16 | 2014-03-19 | 华北电力大学 | Multiple combined repairing system and method for arsenious organism in soil |
| CN104759463A (en) * | 2015-01-21 | 2015-07-08 | 南京索益盟环保科技有限公司 | Organic-polluted soil restoration method |
| CN205659981U (en) * | 2016-05-30 | 2016-10-26 | 湖南恒凯环保科技投资有限公司 | Organic contaminated soil's prosthetic devices |
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2017
- 2017-01-04 CN CN201710004377.8A patent/CN106694542A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551378A (en) * | 2013-11-20 | 2014-02-05 | 华北电力大学 | Combined microwave oxidation compound repair system and method aiming at organic arsenic pollution in soil |
| CN103639182A (en) * | 2013-12-16 | 2014-03-19 | 华北电力大学 | Multiple combined repairing system and method for arsenious organism in soil |
| CN104759463A (en) * | 2015-01-21 | 2015-07-08 | 南京索益盟环保科技有限公司 | Organic-polluted soil restoration method |
| CN205659981U (en) * | 2016-05-30 | 2016-10-26 | 湖南恒凯环保科技投资有限公司 | Organic contaminated soil's prosthetic devices |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695384A (en) * | 2020-05-23 | 2021-11-26 | 中国环境科学研究院 | Plant restoration device and restoration method for soil polluted by heavy metal elements |
| CN113695384B (en) * | 2020-05-23 | 2022-10-25 | 中国环境科学研究院 | Phytoremediation device and restoration method for soil heavy metal pollution |
| CN112139236A (en) * | 2020-09-17 | 2020-12-29 | 南开大学 | A method of microwave-enhanced Fenton oxidation technology to remediate pesticide-contaminated soil |
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