CN107900092A - A kind of arid area lead cadmium pollution soil repair system - Google Patents
A kind of arid area lead cadmium pollution soil repair system Download PDFInfo
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- CN107900092A CN107900092A CN201711029827.5A CN201711029827A CN107900092A CN 107900092 A CN107900092 A CN 107900092A CN 201711029827 A CN201711029827 A CN 201711029827A CN 107900092 A CN107900092 A CN 107900092A
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- 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
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28009—Magnetic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
A kind of arid area lead cadmium pollution soil repair system, including cotton planting district, irrigation rig, power supply, on put anode and underlying cathode tube.Cotton planting district is arranged on the upper surface in soil plot to be repaired, and the soil of cotton planting district filling is by local soil, human and animal excreta and the straw of crushing by volume 1:1:0.5 is mixed；Power supply is DC power supply；On put anode and be made of graphite or metal material, the shape for above putting anode is cylinder or rectangular shape；Underlying cathode tube includes outer barrel, cathode bar, nonwoven cotton and cotton stalk magnetism charcoal, outer barrel is made of duroplasts or stainless steel material, the shape of outer barrel is cylinder, cylindrical sides are equipped with some holes, cathode bar is arranged on the center of underlying cathode tube, and cathode bar is made of graphite or metal material, and cathode bar is connected with the anode of power supply, nonwoven cotton liner filling cotton stalk magnetism charcoal in the inner wall of outer barrel, the cylindrical space that nonwoven cotton surrounds.
Description
Technical field
The present invention relates to technical field of soil remediation, especially a kind of arid area lead cadmium pollution soil repair system.
Background technology
In recent years, as the fast development of industry, soil contamination problem increasingly sharpen, especially many regional presence are tighter
The heavy metal lead of weight, cadmium pollution.Lead, cadmium pollution are not only to the degraded of organic matter, the respiratory metabolism of soil, soil ammonification in soil
And nitrification produces suppression, more seriously lead cadmium can also be transformed into the metal organic compound of toxicity bigger, to human body
Health, soil environment produce the harm of bigger.Countries in the world come to realise the seriousness of heavy metal pollution of soil problem, confusingly
Confused carry out administers relevant mechanism and technical study with soil remediation.
At present, administering lead, cadmium pollution both at home and abroad has a variety of methods, it is common mainly have physical restoration, chemical restoration,
Restoration of the ecosystem method.Peripheral doses method efficiency is higher, but expends big energy, and the soil organism and moisture all can be by different journeys
Degree destroys；Chemical restoration can not only carry out in-situ immobilization, can also carry out strange land reparation, but be also easy to produce secondary pollution, once again
Endanger soil ecology safety；Microorganism remediation method in biological renovation method, although with certain repairing effect, can only be to spy
Determine pollutant to be repaired.
Electric repairing technique is excellent with small, the saving energy, economically feasible and high treating effect etc. is influenced on site environment
Point.Phytoremediation is a kind of new heavy-metal contaminated soil administering method, environmental pollution is obtained by " green " Treatment process
To repair, have compared with traditional chemical remediation, physics and engineering reparation beautiful, investment maintenance cost is low, it is easy to operate with
And do not cause the advantages that secondary pollution.
Chinese patent 201611261437.6 disclose a kind of original position it is electronic-dress of Phytoremediation of Soils Contaminated by Heavy Metals
Put, which includes power supply, cathodic region, anode region and soil remediation area.Power supply is DC power supply；Cathodic region include cathode pump A,
Cathode working solution adding tube, cathode working solution treatment box, cathode pump B, cathode switch, cathode working solution delivery pipe, cathode electrode
With cathode electrode protection pipe；Anode region include anode pump A, anode working liquid adding tube, anode working liquid treatment box, anode pump B,
Anode switch, anode working liquid delivery pipe, anode electrode and anode electrode protection pipe；Soil remediation area include phytoremediation floor and
Electro reclamation layer, phytoremediation layer plantation super enriching plant.The patent has higher treatment effeciency to heavy-metal contaminated soil,
But there are equipment it is more the problem of.
The content of the invention
The technical problem to be solved in the present invention is：In order to overcome and solve conventional repair techniques easily cause secondary pollution and
Above-mentioned patent there are the problem of, the present invention provides a kind of arid area lead cadmium pollution soil repair system.Original can not destroyed
Soil is repaired under beginning soil environment, and can conserve and beautify soil place to be repaired.Repair time is short, without secondary dirt
Dye.
The technical solution adopted by the present invention to solve the technical problems is：A kind of arid area lead cadmium pollution soil of the present invention
Earth repair system include cotton planting district, irrigation rig, power supply, on put anode and underlying cathode tube.
The cotton planting district is arranged on the upper surface in soil plot to be repaired, and the soil of cotton planting district filling is by working as
Ground soil, human and animal excreta and the straw of crushing by volume 1:1:0.5 is mixed, the thickness of cotton planting district for 80~
100cm。
The irrigation rig is arranged on cotton planting district top, and irrigation rig includes some water pipes, switch and water pump.
The power supply is DC power supply, and the cathode of power supply is connected by conducting wire with above putting anode, and anode is by conducting wire with
Cathode tube is put to be connected.
Put anode on described to be made of graphite or metal material, the shape for above putting anode is cylinder or cuboid
Shape；On put the size of anode and determined according to the size in pending soil plot and the depth experiments of soil pollution.On put anode
The bottom of cotton planting district is embedded to during work.On put anode equipped with some, be between each other parastate in space.
The underlying cathode tube includes outer barrel, cathode bar, nonwoven cotton and cotton stalk magnetism charcoal.The ruler of underlying cathode tube
It is very little to be determined according to the size in pending soil plot and the depth experiments of soil pollution.Place into the soil during underlying cathode tube work
Depth experiments determine；Underlying cathode tube is horizontal positioned when working and is in parastate with above putting anode in space.Underlying cathode
Cylinder is equipped with some, is between each other parastate in space.
The outer barrel is made of duroplasts or stainless steel material, and the shape of outer barrel is cylindrical hollow configuration, cylinder
Side is equipped with some holes.
The cathode bar is arranged on the center of underlying cathode tube, and cathode bar is made of graphite or metal material, cathode bar
Connected with the anode of power supply.
Nonwoven cotton liner filling cotton stalk magnetic in the inner wall of outer barrel, the cylindrical space that nonwoven cotton surrounds
Property charcoal.
The manufacturing process of the cotton stalk magnetism charcoal is：
(1) cotton stalk harvesting, drying；
(2) cotton stalk after drying crushed, cross 60~100 mesh sieves；
(3) it will be put into after the cotton stalk washing after screening, drying in tube furnace, nitrogen be passed through with the flow of 250ml/min
Gas, heating rate are 10~20 DEG C/min, and the constant temperature time that set temperature is 400~700 DEG C is 2~3h, is cooled to room afterwards
Temperature, obtains cotton stalk charcoal；
(4) cotton stalk charcoal and FeCl3·6H2O presses quality 1~2:10 ratio mixing, be immersed in deionized water,
When stirring, immersion 1~3 are small under the conditions of 30~50 DEG C of temperature, then dry, grind；
(5) article after grinding is pyrolyzed 60~90 minutes with the conditions of 800~1200 DEG C under a nitrogen atmosphere；It is cooled to
Room temperature；Grinding, cross 60~80 mesh sieves；
(6) the article permanent magnet adsorbing after screening, the article of attachment on the permanent magnet is collected, obtains cotton straw
Stalk magnetism charcoal.
The step of carrying out soil remediation using a kind of above-mentioned arid area lead cadmium pollution soil repair system is as follows：
1. excavated in contaminated soil, dispose underlying cathode tube, the depth of underlying cathode tube placement and soil pollution
Depth is identical.
2. putting anode on the placement of contaminated soil top is some, it is in parallel shape above to put anode and underlying cathode tube in space
State.
3. filling cotton planting district, irrigation rig, cotton planting district plant cotton are installed.
4. lead, cadmium ion in soil, under the action of electric field force to underlying cathode tube migrate, irrigation rig to soil into
Row is irrigated, and current flow to lower part under gravity, and eluviation is produced to contaminated soil, accelerate lead in soil, cadmium from
Sub- transfer velocity.
5. the cotton stalk magnetism charcoal in underlying cathode tube is to migrating the lead come, cadmium ion adsorbs, cotton stalk magnetic
Need to be replaced after property charcoal adsorption saturation.
6. lead, cadmium ion in soil, on the one hand migrate under the action of electric field force and leaching to underlying cathode tube,
Adsorbed, on the other hand absorbed by cotton, so as to be removed from soil by cotton stalk magnetism charcoal.Cotton and its stalk can be used to burn
Burn power generation.
Repairing effect of the present invention is good, and repairing efficiency is short, non-secondary pollution, while adaptation to local conditions, and capital expenditure is few, maintenance side
Just, energy consumption is relatively low, has relatively good repairing effect to lead, cadmium pollution soil.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the specific embodiment of the invention；Fig. 2 is the cross section of the underlying cathode tube of the embodiment of the present invention
Figure；
In Fig. 1, Fig. 2：1. cotton planting district, 2. irrigation rigs, 3. power supplys, put anode, 5. underlying cathode tubes, 5-1. on 4.
Outer barrel, 5-2. cathode bars, 5-3. nonwoven cottons, 5-4. cotton stalk magnetism charcoals.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
Embodiment
A kind of arid area lead cadmium pollution soil repair system of the invention as shown in Fig. 1~2, including cotton planting district
1st, irrigation rig 2, power supply 3, on put anode 4 and underlying cathode tube 5.
The cotton planting district 1 is arranged on the upper surface in soil plot to be repaired, the soil of cotton planting district filling by
Local soil, human and animal excreta and the straw of crushing by volume 1:1:0.5 is mixed, and the thickness of cotton planting district is
100cm。
The irrigation rig 2 is arranged on cotton planting district top, and irrigation rig includes some water pipes, switch and water pump.
The power supply 3 is DC power supply, and the cathode of power supply is connected by conducting wire with above putting anode, and anode is by conducting wire with
Cathode tube is put to be connected.
Put anode 4 on described to be made of graphite material, the shape for above putting anode 4 is rectangular shape；On put anode 4
Size is determined according to the size in the plot of pending soil and the depth experiments of soil pollution.On put anode 4 work when be embedded to
The bottom of cotton planting district.On put anode 4 equipped with some, be between each other parastate in space.
The underlying cathode tube 5 includes outer barrel 5-1, cathode bar 5-2, nonwoven cotton 5-3 and cotton stalk magnetism charcoal 5-4.
The size of underlying cathode tube is determined according to the size in pending soil plot and the depth experiments of soil pollution.Underlying cathode tube
The depth placed into the soil during work is determined according to experiment；It is horizontal positioned and with above putting anode be in space during the work of underlying cathode tube
Parastate.Underlying cathode tube is equipped with some, is between each other parastate in space.
The outer barrel 5-1 is made of hard plastic material, and the shape of outer barrel is cylindrical hollow configuration, and cylindrical sides are set
There are some holes.
The cathode bar 5-2 is arranged on the center of underlying cathode tube, and cathode bar is made of graphite material, cathode bar 5-2
Connected with the anode of power supply.
The nonwoven cotton 5-3 liners are in the inner wall of outer barrel, filling cotton chopped straw in the cylindrical space that nonwoven cotton surrounds
Stalk magnetism charcoal 5-4.
The manufacturing process of the cotton stalk magnetism charcoal 5-4 is：
(1) cotton stalk harvesting, drying；
(2) cotton stalk after drying crushed, cross 100 mesh sieves；
(3) it will be put into after the cotton stalk washing after screening, drying in tube furnace, nitrogen be passed through with the flow of 250ml/min
Gas, heating rate are 20 DEG C/min, and the constant temperature time that set temperature is 700 DEG C is 2h, is cooled to room temperature afterwards, obtains cotton straw
Stalk charcoal；
(4) cotton stalk charcoal and FeCl3·6H2O presses quality 1:10 ratio mixing, be immersed in deionized water, in temperature
When stirring, immersion 2 are small under the conditions of 30 DEG C of degree, then dry, grind；
(5) article after grinding is pyrolyzed 60 minutes with the conditions of 1000 DEG C under a nitrogen atmosphere；It is cooled to room temperature；Grind
Mill, cross 80 mesh sieves；
(6) the article permanent magnet adsorbing after screening, the article of attachment on the permanent magnet is collected, obtains cotton straw
Stalk magnetism charcoal.
The step of carrying out soil remediation using a kind of above-mentioned arid area lead cadmium pollution soil repair system is as follows：
1. being excavated in contaminated soil, disposing underlying cathode tube 5, the depth and the depth of soil pollution that excavate, dispose
It is identical.
2. putting anode 4 on the placement of contaminated soil top is some, anode 4 and underlying cathode tube 5 are above put in space in flat
Row state.
3. filling the soil of cotton planting district 1, irrigation rig 2, cotton planting district plant cotton are installed.
4. the lead cadmium ion in soil, migrates, irrigation rig 2 is to soil under the action of electric field force to underlying cathode tube 5
Irrigated, current flow to lower part under gravity, to contaminated soil produce eluviation, accelerate soil in lead cadmium from
Sub- transfer velocity.
5. lead, cadmium ion that the cotton stalk magnetism charcoal 5-4 in underlying cathode tube comes migration adsorb, cotton straw
Need to be replaced after stalk magnetism charcoal 5-4 adsorption saturations.
6. lead, cadmium ion in soil, on the one hand migrate under the action of electric field force and leaching to underlying cathode tube
5, adsorbed, on the other hand absorbed by cotton, so as to be removed from soil by cotton stalk magnetism charcoal.Cotton and its stalk are used for burning
Burn power generation.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (2)
- A kind of 1. arid area lead cadmium pollution soil repair system, it is characterised in that：Including cotton planting district (1), irrigation rig (2), power supply (3), on put anode (4) and underlying cathode tube (5)；The cotton planting district (1) is arranged on the upper surface in soil plot to be repaired, and the soil of cotton planting district filling is by working as Ground soil, human and animal excreta and the straw of crushing by volume 1:1:0.5 is mixed, the thickness of cotton planting district for 80~ 100cm；The irrigation rig (2) is arranged on cotton planting district top, and irrigation rig includes some water pipes, switch and water pump；The power supply (3) is DC power supply, and the cathode of power supply (3) is connected by conducting wire with above putting anode (4), and anode passes through conducting wire It is connected with underlying cathode tube (5)；Put anode (4) on described to be made of graphite or metal material, the shape for above putting anode (4) is cylinder or cuboid Shape；On put the size of anode (4) and determined according to the size in pending soil plot and the depth experiments of soil pollution；On put sun Positioned at the bottom of cotton planting district when pole (4) works；On put anode (4) equipped with some, be between each other parallel shape in space State；The underlying cathode tube (5) includes outer barrel (5-1), cathode bar (5-2), nonwoven cotton (5-3) and cotton stalk magnetism charcoal (5-4)；The size of underlying cathode tube (5) is determined according to the size in pending soil plot and the depth experiments of soil pollution； The depth placed into the soil during underlying cathode tube (5) work is determined according to experiment；During the work of underlying cathode tube (5) it is horizontal positioned and with On to put anode (4) in space be in parastate；Underlying cathode tube (5) is equipped with some, is between each other parastate in space；The outer barrel (5-1) is made of duroplasts or stainless steel material, and the shape of outer barrel is cylindrical hollow configuration, cylinder Side is equipped with some holes；The cathode bar (5-2) is arranged on the center of underlying cathode tube, and cathode bar is made of graphite or metal material, cathode bar (5-2) is connected with the anode of power supply；Nonwoven cotton (5-3) liner filling cotton stalk in the inner wall of outer barrel, the cylindrical space that nonwoven cotton surrounds Magnetic charcoal (5-4)；The manufacturing process of the cotton stalk magnetism charcoal (5-4) is：1. cotton stalk harvesting, drying；2. the cotton stalk after drying is crushed, crosses 60~100 mesh sieves；3. will be put into after the cotton stalk washing after screening, drying in tube furnace, nitrogen is passed through with the flow of 250ml/min, is risen Warm speed is 10~20 DEG C/min, and the constant temperature time that set temperature is 400~700 DEG C is 2~3h, is cooled to room temperature, obtains afterwards To cotton stalk charcoal；4. cotton stalk charcoal and FeCl3·6H2O presses quality 1~2:10 ratio mixing, be immersed in deionized water, in temperature When stirring, immersion 1~3 are small under the conditions of 30~50 DEG C, then dry, grind；5. the article after grinding is pyrolyzed 60~90 minutes with the conditions of 800~1200 DEG C under a nitrogen atmosphere；It is cooled to room temperature； Grinding, cross 60~80 mesh sieves；6. the article permanent magnet adsorbing after screening, the article of attachment on the permanent magnet is collected, obtains cotton stalk magnetic Property charcoal.
- A kind of 2. arid area lead cadmium pollution soil repair system according to claim 1, it is characterised in that：Using above-mentioned It is as follows that a kind of arid area lead cadmium pollution soil repair system carries out the step of soil remediation；1. being excavated in contaminated soil, disposing underlying cathode tube (5), the depth of excavation is identical with the depth of soil pollution；2. putting anode (4) on the placement of contaminated soil top is some, above put anode (4) and underlying cathode tube (5) is in space Parastate；3. the soil of cotton planting district (1) is filled, installation irrigation rig (2), cotton planting district plant cotton；4. the lead cadmium ion in soil, migrates, irrigation rig (2) is to soil under the action of electric field force to underlying cathode tube (5) Irrigated, current flow to lower part under gravity, to contaminated soil produce eluviation, accelerate soil in lead cadmium from Sub- transfer velocity；5. lead, cadmium ion that the cotton stalk magnetism charcoal (5-4) in underlying cathode tube comes migration adsorb, cotton stalk Need to be replaced after magnetic charcoal (5-4) adsorption saturation；6. lead, cadmium ion in soil, on the one hand migrate under the action of electric field force and leaching to underlying cathode tube (5), Adsorbed, on the other hand absorbed by cotton, so as to be removed from soil by cotton stalk magnetism charcoal；Cotton and its stalk are used for burning Power generation.
Priority Applications (1)
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|---|---|---|---|
| CN201711029827.5A CN107900092A (en) | 2017-10-30 | 2017-10-30 | A kind of arid area lead cadmium pollution soil repair system |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201711029827.5A CN107900092A (en) | 2017-10-30 | 2017-10-30 | A kind of arid area lead cadmium pollution soil repair system |
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| CN109565987A (en) * | 2019-01-16 | 2019-04-05 | 安徽工程大学 | A kind of chiltern alkaline land soil prosthetic device and its restorative procedure |
| CN110142290A (en) * | 2019-05-16 | 2019-08-20 | 浙江省有色金属地质勘查局 | A kind of heavy-metal contaminated soil electro reclamation device and method |
| CN110369489A (en) * | 2019-08-19 | 2019-10-25 | 大连地拓环境科技有限公司 | A kind of method of bitubular electrode restoration of soil polluted by heavy metal |
| CN110976505A (en) * | 2019-12-17 | 2020-04-10 | 浙江省农业科学院 | Method and device for rapidly electrically repairing heavy metal contaminated soil by using magnetic biochar |
| CN111097789A (en) * | 2019-12-10 | 2020-05-05 | 常州大学 | Soil remediation system |
| CN111872096A (en) * | 2020-06-22 | 2020-11-03 | 罗培佳 | Self-extending net type heavy metal contaminated soil remediation method |
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| CN111872096A (en) * | 2020-06-22 | 2020-11-03 | 罗培佳 | Self-extending net type heavy metal contaminated soil remediation method |
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Application publication date: 20180413 |