CN206676907U - A kind of cycling elution system administered for farmland pollution soil remediation - Google Patents
A kind of cycling elution system administered for farmland pollution soil remediation Download PDFInfo
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- CN206676907U CN206676907U CN201720216616.1U CN201720216616U CN206676907U CN 206676907 U CN206676907 U CN 206676907U CN 201720216616 U CN201720216616 U CN 201720216616U CN 206676907 U CN206676907 U CN 206676907U
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of cycling elution system administered for farmland pollution soil remediation, it includes being sequentially connected the irrigation leaching system connect, impurity and purification system and water purification storage and recharge system, water purification storage and the water outlet of recharge system supply irrigation leaching system；The irrigation leaching system mainly by planting soil, organic matter filter layer, coarse sand filter layer, double-wall corrugated ooze pipe and collecting-tank is formed, planting soil, organic matter filter layer, coarse sand filter layer, the double-wall corrugated pipe that oozes from top to bottom are arranged successively, the double-wall corrugated outlet connection collecting-tank for oozing pipe, the outlet connection impurity and purification system of collecting-tank.The method that Tthe utility model system uses elution, the content of pollutant in soil, while lowering of watertable are reduced, prevents pollution repeatedly；After the contaminant water oozed out after Soil leaching carries out impurity and purification, irrigation leaching is carried out to soil again by recharge, the pollutant in soil had not only been eliminated but also had irrigated farmland, while the system for not producing secondary pollution.
Description
Technical field
It the utility model is related to farmland pollution and administer to repair and it is dirty to be used for farmland with environmental pollution prevention and control field, specifically one kind
Contaminate the cycling elution system that soil remediation is administered.
Background technology
Soil is basis for the survival of mankind, raw in all things on earth soil, grain that people eat, melon fruits and vegetables, and vegetable oil
The almost all such as material, sugar material, Chinese medicine originate from soil；The animal products such as meat that people eat, egg, milk, and freshwater product are most
And by geophilous food conversion.Only possess the soil of cleaning, be possible to produce safe food, ability
The safety on the tip of the tongue is ensured from source.However, for a long time, with a large amount of utilization of mineral resources, industrial production
Fast development and various chemical products, agricultural chemicals and chemical fertilizer widely use, the pollutant containing heavy metal enters by all means
Enter environment, cause soil, especially farmland soil heavy metals pollution getting worse, brought very to ecological environment and health
Big risk.
Heavy metal has the characteristics that the residence time is long, disguise is strong, toxicity is big, it is impossible to by chemistry or biodegradable, Yi Tong
Food chain approach is crossed in plant, animal and people's cylinder accumulation, serious prestige is formed to ecological environment, food security and health
The side of body.At present the restorative procedure of heavy-metal contaminated soil mainly include peripheral doses, chemical remediation and it is biological prosthetic the methods of.With it
He compares restorative procedure, and Soil leaching is the restorative procedure that effective physical-chemical is combined.Soil leaching technology is usual
Refer to elute contaminated soil by the liquid or other fluids that can promote soil pollutant dissolving migration, make absorption or be fixed on
The technology that pollutant desorption on soil particle dissolves and removed.Soil leaching quickly can not only move pollutant from soil
Remove, high density pollution soil remediation is completed in the short time, and control expense is relatively cheap, and be particularly suitable for use in heavy metal pollution
The improvement reparation of soil, have become one of contaminated soil fast repair technique Main Means now, it is existing a large amount of at home and abroad
Successful engineer applied.Elution method can flexibly take in situ or dystopy mode of operation, have bright application prospect.Elution is repaiied
Multiple key technology is that selection or exploitation have the targetedly leaching without environmental toxicity and advantage of lower cost and non-secondary pollution
Lotion and ELUTION METHOD, formulate cost-effective renovation technique program.
But there is problems with current Soil leaching technology in the application：
The implementation of Soil leaching technology is generally divided into elution in situ and dystopy elution, and traditional Soil leaching technology is by water
Or chelating agent (citric acid, EDTA, DYPA, EDDS), acid/base solution (H containing rinse aid2SO4、HNO3), complexing agent (vinegar
Acid, ammonium acetate, cyclodextrin), the eluent such as surfactant (APG, SDS, SDBS, DDT, rhamnolipid) be injected into contaminated soil
Or in deposit, the process of elution and cleaning pollutant in soil.
In general dystopy elution technique needs clear shoveling earth, is backfilled after being handled using large-scale elution equipment.Dystopy is drenched
Wash technology and the problems such as quantities and huge, high to elution equipment requirement fund cost are dug clearly in the earthwork is faced with implementation process；
The agricultural land soil of dystopy elution simultaneously has not only broken up the original structure of agricultural land soil, also results in nutrient loss, quality degradation, soil
Environment is unbalance, and this not only destroys root system of plant, influences plant growth and farmland cultivation, it is often more important that have impact on agriculture life
Production, cause the economic loss of peasant.
Original position soil elution technique equally has the drawbacks of above-mentioned dystopy elution technique in implementation process, simultaneously because needing
The injection of substantial amounts of clean water and medicament, not only produces a large amount of pollutant effluents waste liquids, increases rehabilitation cost, elutes the injection of medicament
The secondary pollution of soil can also be caused；Due to being in situ elute, it is necessary to add under conditions of to soil disturb on a large scale
Enter water and elution medicament, be not easy to be controlled reparation degree during implementation, wastewater eluting and medicament are downwards or to week
Side is spread, and causes new contaminant transportation, the risk for producing secondary pollution be present；Original position elution repairing polluted soil later stage rank
Section, because of precipitation or irrigating causes the raising and lowering of level of ground water to change, and easily causes original pollutant migrated downward into everywhere
The rising of lower water and rise, the soil for having eluted reparation is contaminated again again, original repairing effect is had a greatly reduced quality.
Traditional elution technique in situ is influenceed by underground water and the soil water, and leacheate elution migration rate is slower, shadow
Ring repairing efficiency；It is unavoidable in lessivation although not damaged for being eluted compared with dystopy to soil original structure
Nutrient loss can be caused, long period progress soil productivity and restoration of soil fertility are also needed to after the completion of Soil leaching reparation, equally
Crop production reduction can be caused, influences agricultural economy.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of circulation administered for farmland pollution soil remediation
Elution circuit, the system are not being destroyed soil texture and soil fertility, are not being influenceed root system of plant and agriculture using elution principle in situ
In the case of plant growth, using the method for elution, the content of pollutant in soil, while lowering of watertable are reduced, is prevented
Pollution is repeatedly；After the contaminant water oozed out after Soil leaching carries out impurity and purification, irrigation leaching is carried out to soil by recharge again,
Not only the pollutant in soil had been eliminated but also had irrigated farmland, while secondary pollution will not be produced.
The utility model solves above-mentioned technical problem with following technical scheme：
The utility model is used for the cycling elution system that farmland pollution soil remediation is administered, including is sequentially connected the irrigation connect
Leaching is irrigated in elution circuit, impurity and purification system and water purification storage and recharge system, water purification storage and the water outlet of recharge system supply
System is washed, forms the circulatory system；The irrigation leaching system is mainly by planting soil, organic matter filter layer, coarse sand filter layer, double
Wall ripple oozes pipe and collecting-tank and formed, and planting soil, organic matter filter layer, coarse sand filter layer, double-wall corrugated oozes pipe from top to bottom
Arrange successively, the double-wall corrugated outlet connection collecting-tank for oozing pipe；The outlet connection impurity and purification system of collecting-tank.
The bottom of the collecting-tank is provided with HDPE antiseepage films.
The impurity and purification system includes removal of impurities pond and the clarifier-tank to connect successively, entrance and the irrigation leaching system in the pond that cleans
The collecting-tank of system is connected through pipeline, and the outlet in the pond that cleans is connected through pipeline with the entrance of clarifier-tank, the outlet warp of clarifier-tank
Pipeline is stored with water purification and recharge system is connected, and the water pump that draws water is mounted on three pipelines.
It is provided with the removal of impurities pond and connects successively, and first stage precipitation tank, second-level settling pond and flocculation that top is connected is heavy
Shallow lake pond, first stage precipitation tank are connected with the outlet of irrigation leaching system through pipeline, and flocculation sedimentation tank is connected with clarifier-tank through pipeline
Connect.
The semi-transparent ion exchange grid of macromolecule is provided with the clarifier-tank.
The water purification storage and recharge system include water purification storage pool, and water purification is supplied and irrigates leaching by water purification storage pool through pipeline
System is washed, the water pump that draws water is installed on the pipeline.
The utility model compared with prior art, has the advantages that：
1st, the utility model be used for cycling elution system that farmland pollution soil remediation administers in not broken ring soil texture and
Soil fertility, in the case of not influenceing root system of plant and crop growth, by using ELUTION METHOD, reduce pollutant in soil
Content, reach the purpose of soil remediation.
2nd, the utility model is used for mistake of the cycling elution system in repairing and treating soil of farmland pollution soil remediation improvement
In journey can controlling groundwater level to greatest extent, prevent pollution repeatedly, strengthen soil remediation effect, while can also be effective
Reparation degree is controlled, prevents leachate from migrating downward into, avoids causing secondary pollution.
3rd, the utility model is used for the cycling elution system of farmland pollution soil remediation improvement in removal pollutant in soil
While by leacheate recovery focus on, the leachate after processing is used for field irrigation, has both repaired contaminated soil, again irrigation
Farmland, while water resource has been saved, it will not cause the secondary pollution of environment.
4th, the utility model adds for the cycling elution system that farmland pollution soil remediation is administered using water or in water
Enter Liquid Fertilizer as leacheate, both repaired soil, improved soil fertility again, while do not bring other chemical substances into, keep away
The generation of secondary pollution is exempted from.
5th, the utility model need not in implementation process for the cycling elution system that farmland pollution soil remediation is administered
Using extensive construction equipment, soil excavation area and quantities are small, and construction is simple, the scope of operation is small, both do not need substantial contribution
Nor affect on agricultural production.
Brief description of the drawings
Fig. 1 is the block schematic illustration of Tthe utility model system.
In figure：1- planting soils, 2- organic matters filter layer, 3- coarse sands filter layer, 4- be double-wall corrugated ooze pipe, 5- collecting-tanks,
6-HDPE antiseepage films, 7- draw water water pump one, 8- first stage precipitation tanks, 9- second-level settling ponds, 10- flocculation sedimentation tanks, 11- removal of impurities pond,
12- draw water the semi-transparent ion exchange grid of water pump two, 13- clarifier-tanks, 14- macromolecules, 15- draw water water pump three, 16- water purification storage
Draw water water pump four for pond, 17-.
Embodiment
Technical solutions of the utility model are described in more detail below in conjunction with accompanying drawing.
As shown in figure 1, the utility model is used for the cycling elution system that farmland pollution soil remediation is administered, including phase successively
Irrigation leaching system, impurity and purification system and the water purification of connection store and recharge system, and the irrigation leaching system is mainly by planting
Plant soil 1, organic matter filter layer 2, coarse sand filter layer 3, double-wall corrugated ooze pipe 4 and collecting-tank 5 is formed, planting soil 1, organic matter
Filter layer 2, coarse sand filter layer 3, the double-wall corrugated pipe 4 that oozes from top to bottom are arranged successively, and the double-wall corrugated outlet for oozing pipe 4 connects after converging
Collecting-tank 5 is connect, the bottom of collecting-tank 5 is provided with HDPE antiseepage films 6, the outlet connection impurity and purification system of collecting-tank 5；The removal of impurities
Cleaning system includes removal of impurities pond 11 and the clarifier-tank 13 to connect successively, is provided with removal of impurities pond 11 and connects successively, and top is connected
First stage precipitation tank 8, second-level settling pond 9 and flocculation sedimentation tank 10, the collecting-tank 5 of first stage precipitation tank 8 and irrigation leaching system passes through
Pipeline is connected, and the water pump 1 that draws water is provided with the pipeline, and the outlet of flocculation sedimentation tank 10 is connected with clarifier-tank 13 through pipeline
Connect, the water pump 2 12 that draws water is installed on the pipeline, the semi-transparent ion exchange grid 14 of macromolecule, clarifier-tank 13 are provided with clarifier-tank 13
Outlet stored through pipeline and water purification and recharge system is connected, the water pump 3 15 that draws water is installed on the pipeline；The water purification storage
Deposit and recharge system includes water purification storage pool 16, water purification is supplied irrigation leaching system, the pipeline by water purification storage pool 16 through pipeline
On the water pump 4 17 that draws water is installed, after by the water pump 4 17 that draws water, water is extracted out from water purification storage pool 16, recharge to planting soil
Earth 1, form closed loop system.
It is operating process and the operating result of the application example of Tthe utility model system below：
(1) irrigation water is injected into planting soil 1, irrigation water enters by organic matter filter layer 2 and coarse sand filter layer 3
Oozed to double-wall corrugated in pipe 4, and collect and flow into collecting-tank 5；
(2) water pump 1 that draws water is opened, the irrigation water after elution is extracted into removal of impurities pond 11, by first stage precipitation tank 8, two
After level sedimentation basin 9 and flocculation sedimentation tank 10 clean, the water pump 2 12 that draws water is opened, the water after removal of impurities is evacuated to clarifier-tank 13；
(3) after the semi-transparent ion exchange grid 14 of macromolecule purifies, the water pump 3 15 that draws water is opened, after impurity and purification
It is standby that irrigation water is evacuated to water purification storage pool 16；
(4) system operation for a period of time after, opening is drawn water water pump 4 17, and the irrigation water after impurity and purification is extracted out, is used for
Irrigate again；
(5) repeat step (1), (2), (3), (4).
As a result show：Before processing heavy metal in soil total amount be 166.74mg/kg (heavy metal cadmium content 72.78mg/kg,
Heavy metal chromium content 93.96mg/kg), after the processing of the utility model cycling elution system, heavy metal in soil total amount is reduced to
13.36mg/kg (heavy metal cadmium content 6.74mg/kg, heavy metal chromium content are reduced to 6.62mg/kg), heavy metal in soil is gone
Except rate reaches 92%, (clearance of heavy metal cadmium is 90.7%, 93%) clearance of heavy metal chromium is.
The utility model reduces the content of pollutant in soil, while lowering of watertable by using the method for elution,
Prevent pollution repeatedly；After the contaminant water oozed out after Soil leaching carries out impurity and purification, soil is irrigated again by recharge
Elution, had not only eliminated the pollutant in soil but also had irrigated farmland, while the system for not producing secondary pollution.
Tthe utility model system elutes principle according to original position soil, takes local trench digging, the method for stringing, uses irrigation water
Or Liquid Fertilizer is added in irrigation water as eluent, neither large area excavation is applied while heavy metal is eluted from soil
Work, soil texture is destroyed, nor affect on plant growth, while also soil is fostered and apply fertilizer, improve soil fertility, enhancing soil
Territory power, and irrigation is implemented to farmland；Both the pollutant in soil had been eliminated, has promoted agricultural production again.Leaching after elution
After lotion is by centralized collection, uniformly cleaned, removal of impurities processing.Eluent after processing can also enter as irrigation water again
Row field irrigation, water resource was not only saved but also had not caused secondary pollution, because Tthe utility model system is laid with percolating pipe, might be used also
With maximum controlling groundwater level, prevent pollution repeatedly, ensure that repairing effect.
Improvement and reparation of the Tthe utility model system especially suitable for the heavy metal pollution such as nonirrigated farmland, orchard agricultural land soil.
Claims (6)
- A kind of 1. cycling elution system administered for farmland pollution soil remediation, it is characterised in that：The system includes phase successively Irrigation leaching system, impurity and purification system and the water purification of connection store and recharge system, water purification storage and the water outlet of recharge system Irrigation leaching system is supplied, forms the circulatory system；The irrigation leaching system is mainly by planting soil, organic matter filter layer, thick Sand filter layer, double-wall corrugated pipe and the collecting-tank of oozing are formed, and planting soil, organic matter filter layer, coarse sand filter layer, double-wall corrugated are oozed Pipe is from top to bottom arranged successively, the double-wall corrugated outlet connection collecting-tank for oozing pipe；The outlet connection impurity and purification system of collecting-tank.
- 2. it is used for the cycling elution system that farmland pollution soil remediation is administered according to claim 1, it is characterised in that：It is described The bottom of collecting-tank is provided with HDPE antiseepage films.
- 3. the cycling elution system according to claim 1 or claim 2 administered for farmland pollution soil remediation, it is characterised in that： The impurity and purification system includes removal of impurities pond and clarifier-tank, the entrance in the pond that cleans and the catchmenting for irrigation leaching system to connect successively Pond is connected through pipeline, and the outlet in the pond that cleans is connected through pipeline with the entrance of clarifier-tank, the outlet of clarifier-tank through pipeline with it is net Water is stored and recharge system is connected, and the water pump that draws water is mounted on three pipelines.
- 4. it is used for the cycling elution system that farmland pollution soil remediation is administered according to claim 3, it is characterised in that：It is described It is provided with removal of impurities pond and connects successively, and first stage precipitation tank, second-level settling pond and the flocculation sedimentation tank that top is connected, one-level precipitation Pond is connected with the outlet of irrigation leaching system through pipeline, and flocculation sedimentation tank is connected with clarifier-tank through pipeline.
- 5. it is used for the cycling elution system that farmland pollution soil remediation is administered according to claim 3, it is characterised in that：It is described The semi-transparent ion exchange grid of macromolecule is provided with clarifier-tank.
- 6. the cycling elution system according to claim 1 or claim 2 administered for farmland pollution soil remediation, it is characterised in that： The water purification storage and recharge system include water purification storage pool, and water purification is supplied irrigation leaching system by water purification storage pool through pipeline, The water pump that draws water is installed on the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720216616.1U CN206676907U (en) | 2017-03-07 | 2017-03-07 | A kind of cycling elution system administered for farmland pollution soil remediation |
Applications Claiming Priority (1)
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| CN106734150A (en) * | 2017-03-07 | 2017-05-31 | 广西博世科环保科技股份有限公司 | A kind of cycling elution system administered for farmland pollution soil remediation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106734150A (en) * | 2017-03-07 | 2017-05-31 | 广西博世科环保科技股份有限公司 | A kind of cycling elution system administered for farmland pollution soil remediation |
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