CN110216139A - A kind of water transfer heavy metals in farmland of improving the soil removes the construction method of system - Google Patents
A kind of water transfer heavy metals in farmland of improving the soil removes the construction method of system Download PDFInfo
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- CN110216139A CN110216139A CN201910437967.9A CN201910437967A CN110216139A CN 110216139 A CN110216139 A CN 110216139A CN 201910437967 A CN201910437967 A CN 201910437967A CN 110216139 A CN110216139 A CN 110216139A
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working 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
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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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
Abstract
The invention discloses the construction methods that a kind of water transfer heavy metals in farmland of improving the soil removes system, and specific construction step is successively are as follows: farmland soil weight structure, building double-layer drainage ditch, building processing pond, building stirring pool, building sedimentation basin, building reservoir, building alkaline precipitating agent automatic adding device, building wind stirring device and building irrigation system；The rainwash of field imports reservoir by the runoff gutter of double-layer drainage ditch, alkaline precipitating agent is added automatically by processing pond behind the hydrops gutter of the soil hydrops inflow double-layer drainage ditch of field, it is sufficiently stirred after reaching stirring pool with wind-force, precipitating flows into reservoir after eventually arriving at sedimentation basin, and the water of reservoir is used for field irrigation.The present invention can gradually remove the heavy metal in agricultural land soil, effectively avoid heavy metal re-activation, and the hydrops and rainwash water source after removing removing heavy metals can be used as crop irrigation water circulation use, efficiently avoid loss of soil nutrient and save water resource.
Description
Technical field
The present invention relates to farmland soil heavy metals pollution remediation technology field, in particular to one kind improves the soil water transfer farmland with much money
Belong to the construction method of removal system.
Background technique
China belongs to one of country of serious water shortage, in addition economic rapid development and population base increase and industrial or agricultural from
Industry population quality is low and supervises not strict in enforcing the law or missing, keeps the surface water resources originally lacked seriously polluted, more exacerbates water resource
Shortage becomes the country of contamination type water shortage.
It investigates and shows according to Ministry of Agriculture's soil environment monitoring, develop faster 320 emphasis contaminated areas in provinces and cities, 24, China
In, field crops pollute exceeded agricultural cultivation area and account for the 20% of the monitoring and surveying gross area；Wherein content of beary metal is super
Target agricultural output and area account for about 80% or more of the exceeded agricultural product total amount of pollutant and the gross area, especially Pb, Cd,
Hg, Cu and its combined pollution are the most prominent.Cadmium in irrigating region soil, nickel, the content of zinc and copper are exceeded, and average content is respectively
65.31mg/kg, 1196.64mg/kg, 2799.25mg/kg and 145.78mg/kg are national soil environment secondary standard respectively
108.85,19.94,9.33 and 1.46 times.Cadmium pollution most serious in wheat, rice grain, wheat average content are 2.55mg/
Kg, is 25.5 times of national food hygienic standard, and nickel, chromium and Zn content are the 12.98 of national food hygienic standard, 6.12 respectively
With 1.32 times.To ensure country's arable land red line and quality and security of agricultural products, farmland soil heavy metals pollution remediation technology is urgently
Research.
Currently, the recovery technique of heavy metal pollution of soil, according to varied using method, wherein effect is preferably: logical
It crosses to the alkaline fertilizers such as the alkaline matters such as using in farmland lime, slag or calcium magnesium phosphate, suction of the crops to heavy metal can be reduced
It receives, the effect of chemical remediation is more satisfactory and expense is little, but stability is not strong, and heavy metal is stored in soil always, exists
The problem of heavy metal reactivation.
Summary of the invention
It, can will be in agricultural land soil the object of the present invention is to provide a kind of farmland soil heavy metals pollution remediation technology field
Heavy metal gradually remove, effectively avoid heavy metal re-activation, can will remove soil hydrops and earth's surface diameter after removing heavy metals
Flow liquid is for irrigating, avoiding soil hydrops nutrient loss and saving water resource.
Above-mentioned technical purpose of the invention has the technical scheme that one kind improves the soil water transfer farmland with much money
Belong to the construction method of removal system, specific construction step are as follows:
1) farmland soil weight structure
Firstly, the arable layer of field is removed, then remove remaining effective soil layer；Secondly, being put down if after removing being clay layer
After whole with coarse sand be layered on clay layer surface formed passage of water layer, if removing after non-clay layer, need to roll the soil body, it is smooth after
One layer of alkaline precipitating agent of surface spreading, then passage of water layer is formed on its surface with coarse sand paving；It is removed in advance finally, first replying
Effective soil layer is on the surface of passage of water layer, then replys the arable layer removed in advance on the surface of effective soil layer；
2) double-layer drainage ditch is constructed
It excavates to form double-layer drainage ditch in field, bottom of trench casting concrete forms waterproof bottom of trench, the ditch of two sides after smoothing out
Wall is poured to form permeable furrow bank bottom-up with non-fine concrete, and the permeable furrow bank is connect with passage of water layer, described
The upper end of ditch wall is formed in parallel with the impermeable ditch body interlayer of the waterproof bottom of trench, the ditch body interlayer with concreting
Double-layer drainage ditch is divided into the hydrops gutter of lower layer and the runoff gutter on upper layer, the upper surface of the ditch body interlayer two sides
Waterproof furrow bank is formed with concreting, the upper end of the double-layer drainage ditch is erected with dismountable double-layer drainage trench cover,
The double-layer drainage trench cover is equipped with several leakage holes；
3) processing pond is constructed
Buried hydrops processing pond, the processing pond and the hydrops are constructed in the water (flow) direction end of double-layer drainage ditch
Gutter connection, as concrete structure, Chi Ding is provided with dismountable processing pond cover board in pond, the processing pond cover board with it is described
The ditch body interlayer of double-layer drainage ditch is located at same elevation face；
4) stirring pool is constructed
The stirring pool of the buried connection processing pond water outlet is constructed, pond is as concrete structure；
5) sedimentation basin is constructed
The sedimentation basin of the buried connection stirring pool water outlet is constructed, pond is as concrete structure；
6) reservoir is constructed
Construct the reservoir of opened type, the reservoir and the intercepting drain of the double-layer drainage ditch and the water outlet of sedimentation basin
Connection, pond is as concrete structure；
7) alkaline precipitating agent automatic adding device is constructed
Precipitating reagent automatic adding device is installed in the processing pond, precipitating reagent automatic adding device includes being set to hydrops
Waterwheel below the end of gutter, with waterwheel by the precipitating reagent addition wheel of the first transmission axis connection, be set to precipitating reagent addition
The precipitating reagent placing box of top is taken turns, the periphery of precipitating reagent addition wheel offers several adding troughs, and the lower end of precipitating reagent placing box is opened
The adding mouth to match equipped with one with adding trough, precipitating reagent placing groove is interior to be added with alkaline precipitating agent；
8) wind stirring device is constructed
Field face above the stirring pool is equipped with wind stirring device, and the wind stirring device includes being set to
Blender in the stirring pool, the leaf for being connect with the blender by second driving shaft and being set to field surface upper end
Wheel；
9) irrigation system is constructed
Water pump, the irrigation system in the water pump connection field are laid in the reservoir.
By using above-mentioned technical proposal, the heavy metal ion in soil is seeped into the coarse sand passage of water under acting on by lower infiltration
Layer reaches no longer lower infiltration after impermeable stratum, and passes through passage of water layer lateral transfer to the hydrops gutter of double-layer drainage ditch
Interior, rainwash is imported into the runoff gutter of double-layer drainage ditch, is imported in reservoir eventually by intercepting drain, hydrops draining
Hydrops in ditch flows to one end of waterwheel, and part flows into waterwheel, partially flows directly into processing pond, drives waterwheel rotation, and waterwheel is logical
It crosses the first transmission shaft and drives precipitating reagent addition wheel rotation, when adding trough turns to opposite with adding mouth, alkaline precipitating agent, which is fallen into, to be added
Add slot, alkaline precipitating agent is added to gutter with sink rotation, the water of processing pond is flowed to gutter drives alkaline precipitating agent
Flow to stirring pool, wind-force drives the stirring of wind stirring device, and the water that alkaline precipitating agent is mixed with after stirring flows into sedimentation basin, in water
Heavy metal exists in the form of cation, and alkaline precipitating agent forms anion after being dissolved in water, the heavy metal in precipitating pool inner water
Cation occurs reversed formed with the anion that alkaline precipitating agent is formed and precipitates, when the hydrops in sedimentation basin reaches certain water level
It will be flowed into reservoir；When needing to irrigate, irrigated by the irrigation system of water pump water delivery to field in reservoir.
The further setting of the present invention are as follows: the processing pond, stirring pool, sedimentation basin fall progressively connection in ladder.
The further setting of the present invention are as follows: the arable layer with a thickness of 15~20cm, the effective soil layer with a thickness of
40~60cm, the passage of water layer with a thickness of 15~20cm, the thickness of the passage of water layer and the permeable furrow bank and
Elevation is all the same.
The further setting of the present invention are as follows: the alkaline precipitating agent is quick lime.
The further setting of the present invention are as follows: the wind power generation plant that the water pump power supply installed in the field is, wind-force hair
Electric installation includes wind-driven generator and battery.
The further setting of the present invention are as follows: the double-layer drainage ditch double-layer drainage trench cover is opened in inverted v-shaped and leakage hole
Set on double-layer drainage trench cover close to the two sides of waterproof side wall.
The further setting of the present invention are as follows: the quantity of the adding trough is identical as the quantity of the sink and position is along first
Propeller shaft length direction corresponds.
In conclusion the invention has the following advantages:
One, the present apparatus can be by multistage, the multiple removals by the soil water of the heavy metal in farmland, gradually will be in farmland
Heavy-metal movement remove, effectively avoid heavy metal re-activation；
Secondly, double-layer drainage ditch be made of hydrops gutter and runoff gutter, hydrops is separately discharged with rainwash,
It prevents from leading to the excessive removal for influencing hydrops heavy metal of water flow due to rainfall, while being used to irrigate after rainwash being collected；
Thirdly, go in sedimentation basin the water source of the hydrops after removing heavy metals and rainwash to can be used as crop irrigation water circulation benefit
With efficiently avoiding the loss of soil nutrient.
Detailed description of the invention
Fig. 1 the structural representation of present invention；
The cross-sectional view of Fig. 2 precipitating reagent addition wheel and precipitating reagent placing groove relationship；
The annexation figure of Fig. 3 waterwheel and precipitating reagent addition wheel；
Fig. 4 wind stirring apparatus structure schematic diagram；
The cross-sectional view of Fig. 5 field and double-layer drainage ditch structure.
In figure: 1, field；11, passage of water layer；12, effective soil layer, 13, arable layer；2, double-layer drainage ditch；21, impermeable
Ditch bottom；22, permeable furrow bank；23, waterproof furrow bank；24, impermeable ditch body interlayer；25, hydrops gutter；26, runoff drains
Ditch；3, double-layer drainage trench cover；31, leakage hole；41, waterwheel；42, the first transmission shaft；43, precipitating reagent addition wheel；44, precipitating reagent
Placing groove；45, adding trough；46, adding mouth；47, processing pond cover board；5, processing pond；7, stirring pool；8, wind stirring device；81,
Blender；82, second driving shaft；83, impeller；9, sedimentation basin；10, reservoir；101, intercepting drain；102, water pump；103, wind-force
Power generator.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment, a kind of water transfer heavy metals in farmland of improving the soil remove the construction method of system, referring to Fig.1-5, specific to construct
Step are as follows:
1) farmland soil weight structure
Firstly, 20cm is removed in the arable layer 13 of field, then remove the effective soil layer 12 of remaining thickness 50cm；Secondly,
If removing after be clay layer, it is smooth after with coarse sand be layered on clay layer surface 20cm formed passage of water layer 11, clay layer have compared with
Good impermeability, can effectively prevent seeping under hydrops, if non-clay layer after removing, need to roll the soil body, it is smooth after in surface spreading
One layer of alkaline precipitating agent, then be layered on its surface 20cm with coarse sand and form passage of water layer 11, still there is underwater infiltration after preventing compacting,
The hydrops permeated downwards heavy metal ion after alkaline precipitating agent forms precipitating, can reduce alkaline heavy metal and flow into rivers and lakes
Amount；Finally, first replying the effective soil layer 12 removed in advance on the surface of passage of water layer 11, then reply the farming removed in advance
Layer 13 is on the surface of effective soil layer 12.
2) double-layer drainage ditch is constructed
It is excavated between two pieces of fields 1 and forms double-layer drainage ditch 2, if field face ridging when farming, ridge is towards double-layer drainage ditch
2, rainwash of being more convenient for flows to double-layer drainage ditch 2, and bottom of trench casting concrete forms waterproof bottom of trench 21, the ditch of two sides after smoothing out
Wall is poured to form permeable furrow bank 22 bottom-up with non-fine concrete, and the cement consumption in the non-fine concrete wall is
200kg/m3, aggregate are the gravel that partial size is 15mm, and permeable furrow bank 22 is connect with passage of water layer 11, passage of water layer 11 and thoroughly
The thickness and elevation of ditch wall 22 are all the same, and the upper end concreting of permeable furrow bank 22 forms one layer and is parallel to impermeable ditch
Double-layer drainage ditch 2 is divided into the hydrops gutter 25 of lower layer by the impermeable ditch body interlayer 24 at bottom 21, impermeable ditch body interlayer 24
And the runoff gutter 26 on upper layer, the upper surface of impermeable 24 two sides of ditch body interlayer form waterproof furrow bank with concreting
23, the upper end of double-layer drainage ditch 2 is erected with a dismountable double-layer drainage trench cover 3, if double-layer drainage trench cover 3 offers
Dry leakage hole 31, double-layer drainage trench cover 3 are opened in double-layer drainage trench cover 3 close to waterproof in inverted v-shaped and leakage hole 31
The two sides of furrow bank 23.
3) processing pond is constructed
A buried processing pond 5 is constructed in the water (flow) direction end of double-layer drainage ditch 2, processing pond 5 and hydrops drain
Ditch 25 is connected to, and as concrete structure, Chi Ding is provided with one piece of dismountable processing pond cover board 47 in pond, processing pond cover board 47 and not
Permeable ditch body interlayer 24 is located at sustained height plane.
4) stirring pool is constructed
The stirring pool 7 of buried connection 5 water outlet of drainage pool of building one, pond is as concrete structure.
5) sedimentation basin is constructed
The sedimentation basin 9 of buried connection 7 water outlet of stirring pool of building one, pond is as concrete structure.
6) reservoir is constructed
Construct the reservoir 10 of an opened type, the runoff gutter 26 and sedimentation basin 9 of reservoir 10 and double-layer drainage ditch 2
Rainwash is imported reservoir 10 by intercepting drain 101 by connection, runoff gutter 26, and pond is as concrete structure.
7) alkaline precipitating agent automatic adding device is constructed
Precipitating reagent automatic adding device is installed in drainage pool 5, precipitating reagent automatic adding device includes one and is set to product
41, one, waterwheel below 25 end of liquid gutter and the precipitating reagent addition that waterwheel 41 connect by the first transmission shaft 42 take turns 43,
One is set to the precipitating reagent placing box of 43 top of precipitating reagent addition wheel, and the periphery of precipitating reagent addition wheel 43 offers several additions
Slot 45, and the quantity of sink is identical and position is corresponded along 42 length direction of the first transmission shaft, water flow for the quantity of adding trough 45
Waterwheel 41 is driven to rotate, waterwheel 41 drives 43 rotation of precipitating reagent addition wheel, enables the additive amount of alkaline precipitating agent with dampening
The change of flow and change, effectively ensure to add suitable alkaline precipitating agent, the lower end of precipitating reagent placing box offer one with
The adding mouth 46 that adding trough 45 matches, precipitating reagent placing groove 44 is interior to be added with alkaline precipitating agent, and alkaline precipitating agent is quick lime.
8) wind stirring device is constructed
Field face above stirring pool 7 is equipped with wind stirring device 8, and wind stirring device 8 includes one and is set to
81, one, blender in stirring pool 7 are connect by second driving shaft 82 with blender 81 and are set to the impeller of field face upper end
83。
9) irrigation system is constructed
A water pump 102 is provided in reservoir 10, water pump 102 is connected to the irrigation system (figure omits) in field 1, field
One wind power generation plant 103 powered for water pump 102 is installed, wind power generation plant 103 includes wind-driven generator and storage on 1
Battery (figure omits).
Wherein, processing pond 5, stirring pool 7, sedimentation basin 9 fall progressively connection in ladder.
Working principle: the hydrops in soil is seeped into coarse sand passage of water layer 11 under acting on by lower infiltration, reaches impermeable stratum
It is no longer lower after 11 to seep, and pass through in passage of water layer lateral transfer to the hydrops gutter 25 of double-layer drainage ditch 2, rainwash
It is imported into the runoff gutter 26 of double-layer drainage ditch 2, is flowed into reservoir 10 eventually by intercepting drain, in hydrops gutter 25
Hydrops flow to one end of waterwheel 41, part flows into waterwheel 41, partially flows directly into diversion pond, drives waterwheel 41 to rotate, waterwheel
41 drive 43 rotation of precipitating reagent addition wheel, when adding trough 45 turns to opposite with adding mouth 46, alkalinity by the first transmission shaft 42
Precipitating reagent falls into adding trough 45, alkaline precipitating agent is added to gutter with sink rotation, the water of processing pond is flowed to gutter
Alkaline precipitating agent is driven to flow to stirring pool 7, wind-force drives wind stirring device 8 to stir, the water of alkaline precipitating agent is mixed with after stirring
Sedimentation basin 9 is flowed into, the heavy metal in water exists in the form of cation, and alkaline precipitating agent forms anion after being dissolved in water, heavy
The anion that heavy metal cation and alkaline precipitating agent in shallow lake pond 9 in water are formed occurs reversed formed and precipitates, when in sedimentation basin 9
Hydrops will be flowed into reservoir 10 when reaching certain water level；When needing to irrigate, start the water pump 102 in reservoir 10,
It is the irrigation of field 1 by irrigation system.
The effect detection of this system is carried out, its step are as follows:
Common field and the soil for being provided with heavy metals removal recharge system field respectively take 1kg in the identical period, carry out soil
Cadmium in earth, nickel, zinc and copper content detected, monthly detection is primary, continues 6 months, testing result is as follows:
Be provided with it can be seen from upper table comparing result the content of the heavy metal of heavy metals removal recharge system field with
The passage of time gradually decreases, and the content of the heavy metal of common field as a comparison does not change substantially.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (7)
1. the construction method that a kind of water transfer heavy metals in farmland of improving the soil removes system, which is characterized in that specific construction step are as follows:
1) farmland soil weight structure
Firstly, the arable layer (13) of field (1) is removed, then remove remaining effective soil layer (12)；Secondly, if being glutinous after removing
Soil layer is layered on surface formation passage of water layer (11) of clay layer, if non-clay layer after removing, need to roll soil with coarse sand after smooth
Body, it is smooth after in one layer of alkaline precipitating agent of surface spreading, then with coarse sand paving be formed on its surface passage of water layer (11)；Finally,
The effective soil layer (12) removed in advance is first replied on the surface of passage of water layer (11), then replys the arable layer (13) removed in advance
On the surface of effective soil layer (12)；
2) double-layer drainage ditch is constructed
It excavating and is formed double-layer drainage ditch (2) in field (1), bottom of trench casting concrete is formed waterproof bottom of trench (21) after smoothing out, and two
The furrow bank of side is poured to be formed permeable furrow bank (22) bottom-up with non-fine concrete, the permeable furrow bank (22) and the passage of water
Layer (11) connection, the upper end of the permeable furrow bank (22) is formed in parallel with the waterproof bottom of trench (21) no with concreting
Double-layer drainage ditch (2) is divided into the hydrops gutter of lower layer by permeable ditch body interlayer (24), the impermeable ditch body interlayer (24)
(25) and the runoff gutter (26) on upper layer, the upper surface of impermeable ditch body interlayer (24) two sides are formed with concreting
Waterproof furrow bank (23), the upper end of the double-layer drainage ditch (2) is equipped with dismountable double-layer drainage trench cover (3), described double
Layer drainage ditch cover plate (3) offers several leakage holes (31)；
3) processing pond is constructed
It is constructed buried processing pond (5) in the water (flow) direction end of double-layer drainage ditch (2), the processing pond (5) and the product
Liquid gutter (25) connection, as concrete structure, Chi Ding is provided with dismountable processing pond cover board (47), the processing pond in pond
Cover board (47) and the impermeable ditch body interlayer (24) are located at sustained height plane；
4) stirring pool is constructed
The stirring pool (7) of buried connection processing pond (5) water outlet is constructed, pond is as concrete structure；
5) sedimentation basin is constructed
The sedimentation basin (9) of buried connection stirring pool (7) water outlet is constructed, pond is as concrete structure；
6) reservoir is constructed
Construct the reservoir (10) of opened type, the intercepting drain (101) of the reservoir (10) and the double-layer drainage ditch (2) and heavy
The water outlet in shallow lake pond (9) is connected to, and pond is as concrete structure；
7) alkaline precipitating agent automatic adding device is constructed
Precipitating reagent automatic adding device is installed in the processing pond (5), precipitating reagent automatic adding device includes being set to draining
Waterwheel (41) below ditch (6) end takes turns (43) with the precipitating reagent addition that waterwheel (41) connects by the first transmission shaft (42), sets
The periphery of the precipitating reagent placing box being placed in above precipitating reagent addition wheel (43), precipitating reagent addition wheel (43) offers several adding troughs
(45), the lower end of precipitating reagent placing box offers the adding mouth (46) to match with adding trough (45), precipitating reagent placing groove
(44) alkaline precipitating agent is added in；
8) wind stirring device is constructed
Field face above the stirring pool (7) is equipped with wind stirring device (8), and the wind stirring device (8) includes
The blender (81) that is set in the stirring pool (7) is connect and is set by second driving shaft (82) with the blender (81)
It is placed in the impeller (83) of field face upper end；
9) irrigation system is constructed
It is provided with water pump (102) in the reservoir (10), the irrigation system on water pump (102) connection field (1).
2. the construction method that a kind of water transfer heavy metals in farmland of improving the soil according to claim 1 removes system, it is characterised in that:
The processing pond (5), stirring pool (7), sedimentation basin (9) fall progressively connection in ladder.
3. the construction method that a kind of water transfer heavy metals in farmland of improving the soil according to claim 1 removes system, it is characterised in that:
The arable layer (13) with a thickness of 15~20cm, the effective soil layer (12) with a thickness of 40~60cm, the passage of water
Layer (11) with a thickness of 15~20cm, the thickness and elevation of the passage of water layer (11) and the permeable furrow bank (22) are homogeneous
Together.
4. the construction method that a kind of water transfer heavy metals in farmland of improving the soil according to claim 1 removes system, it is characterised in that:
The alkaline precipitating agent is quick lime.
5. the construction method that a kind of water transfer heavy metals in farmland of improving the soil according to claim 1 removes system, it is characterised in that:
The wind power generation plant (103) of promising water pump (102) power supply is installed, wind power generation plant (103) includes wind on the field (1)
Power generator and battery.
6. the construction method that a kind of water transfer heavy metals in farmland of improving the soil according to claim 1 removes system, it is characterised in that:
The double-layer drainage ditch double-layer drainage trench cover (3) is opened in double-layer drainage ditch double-layer drainage in inverted v-shaped and leakage hole (31)
Two sides of the trench cover (3) close to waterproof furrow bank (23).
7. the construction method that a kind of water transfer heavy metals in farmland of improving the soil according to claim 1 removes system, it is characterised in that:
The quantity of the adding trough (45) is identical as the quantity of the sink and position is a pair of along the first transmission shaft (42) length direction one
It answers.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279899A (en) * | 2021-12-28 | 2022-04-05 | 珠江水利委员会珠江水利科学研究院 | Device for researching migration of heavy metals in sediment under different hydrodynamic conditions |
| CN114653743A (en) * | 2022-03-08 | 2022-06-24 | 云南农业大学 | Heavy metal contaminated soil treatment equipment |
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| CN103858552A (en) * | 2013-09-09 | 2014-06-18 | 轻工业环境保护研究所 | Method for constructing soil of plough layer on coarse sand earth surface by heavy metal polluted sediment |
| CN203594009U (en) * | 2013-11-08 | 2014-05-14 | 云南农业大学 | Novel farmland drainage ditch |
| CN104259192A (en) * | 2014-09-24 | 2015-01-07 | 长江水利委员会长江科学院 | Ecological water conservancy restoration system and method for heavy metal polluted farmland soil |
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| CN106216370A (en) * | 2016-08-04 | 2016-12-14 | 北京高能时代环境技术股份有限公司 | A kind of method for repairing heavy metal polluted soil of farmland |
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| CN114279899B (en) * | 2021-12-28 | 2022-07-12 | 珠江水利委员会珠江水利科学研究院 | Device for researching migration of heavy metals in sediment under different hydrodynamic conditions |
| CN114653743A (en) * | 2022-03-08 | 2022-06-24 | 云南农业大学 | Heavy metal contaminated soil treatment equipment |
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Application publication date: 20190910 |