CN110252789A - A kind of strand lake and reservoir desalination control salt method - Google Patents
A kind of strand lake and reservoir desalination control salt method Download PDFInfo
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- CN110252789A CN110252789A CN201910504411.7A CN201910504411A CN110252789A CN 110252789 A CN110252789 A CN 110252789A CN 201910504411 A CN201910504411 A CN 201910504411A CN 110252789 A CN110252789 A CN 110252789A
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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
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of strand lake and reservoir desalination control salt method, at least includes the following steps: bottom storehouse topsoil is turned over, fresh water introduces, band water stirring, natural sedimentation, salt water outlet, is changed clothes repeatedly, land smoothing, clear reservoir filling.Strand lake and reservoir desalination control salt method provided by the invention, it is applied widely, soil matrix lake and reservoir desalination control salt with high salt all kinds of to coastal area can play the role of good effect and, have the characteristics that high-efficient, with low investment, timeliness is long, safe and efficient, the theories such as ecology, environmental protection, low-carbon are embodied, there is good economy, practicability and broad applicability.It is particularly suitable for promoting the use of in Soil salinity height, the middle-size and small-size lake and reservoir of the lesser coastal region of infiltration coefficient.
Description
Technical field
The present invention relates to ecological environment field of engineering technology, more particularly to a kind of strand lake and reservoir desalination control salt method.
Background technique
Soil salt release with high salt causes reservoir water body chlorine ion concentration exceeded, causes drinking water mouthfeel partially salty, and influence
The stabilization of municipal network water supply also considerably increases the pre-treatment cost of most of enterprise's industrial water, uses as agricultural, fishery
Water also will affect the growth of farm-forestry crop and the existence of aquatic animal.
Currently, there is the disadvantages of investment is high, desalination period is long in existing Soil Desalting technology, conventional water conservancy change water desalination when
Between the period often beyond 10 years or more, and water quality indicator be far not achieved the surface water quality lower than 250mg/L require (such as Shanghai City drip
Water lake)；And other desalinating process do not meet ecological, environmental protective theory mostly, threaten lake and reservoir water quality safety.To improve water source reservoir area water
Environmental quality efficiently reduces soil and water salinity, ensures water quality safety, and research and development water source reservoir area Soil Desalting control salt technology has
Important meaning.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of strand lake and reservoir desalination control salt sides
Method, for solving the above-mentioned technical problems in the prior art.Particularly suitable for Soil salinity height, reservoir area area is big, exchange is all
The water source reservoir area Soil Desalting control salt of phase length.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of strand lake and reservoir desalination control salt side
Method at least includes the following steps:
Bottom storehouse topsoil is turned over: the bottom storehouse topsoil for treating the lake and reservoir of desalination control salt is turned over, and changes topsoil
Earth permeability；
Fresh water introduces: introducing the solvent that fresh water is precipitated as soil salt；
It stirs with water: under the depth condition that can meet stirring, topsoil being filled using churned mechanically form
Divide stirring, promotes soil salt dissolution；
Natural sedimentation: after being stirred with water by way of staticly settling, by mud natural sedimentation；
Salt water outlet: lake and reservoir is discharged in the high salinity water body after completing natural sedimentation using water pump and/or drainage gate；
It changes clothes repeatedly: repeatedly recycling the fresh water and introduce, band water stirs, natural sedimentation, salt water outlet Four processes；
Land smoothing: after changing clothes step repeatedly described in completing, the topsoil in desalination control salt lake and reservoir is rammed using machinery
It is real to flatten；
Clear reservoir filling: during cleaning desalination control salt after the waste that lake and reservoir generates, it is de- to complete strand lake and reservoir for reservoir filling
Salt control salt.
Second aspect of the present invention provides purposes of the preceding method in Soil Desalting control salt.
As described above, strand lake and reservoir Soil Desalting control salt method of the invention, has the advantages that offer of the present invention
Strand lake and reservoir Soil Desalting control salt method, applied widely, soil matrix reservoir desalination control salt with high salt all kinds of to coastal area
Can play the role of good effect and, have the characteristics that high-efficient, with low investment, timeliness is long, safe and efficient, embody ecology, environmental protection,
The theories such as low-carbon have good economy, practicability and broad applicability.It is particularly suitable in Soil salinity height, infiltration coefficient
Lesser strand reservoir and the strand for having both emergency water storage function, which are drunk in reservoir, promotes the use of.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be clear that the device not indicated specifically in the following example is all made of conventional equipment or dress in the art
It sets.
In addition, it should also be understood that, one or more method and step mentioned in the present invention does not repel before and after the combination step
It can also be inserted into other methods step there may also be other methods step or between these explicitly mentioned steps, unless separately
It is described；It should also be understood that the combination connection relationship between one or more equipment/device mentioned in the present invention is not repelled
The two equipment/devices specifically mentioned before and after the unit equipment/device there may also be other equipment/device or at these it
Between can also be inserted into other equipment/device, unless otherwise indicated.Moreover, unless otherwise indicated, the number of various method steps is only
Identify the convenient tool of various method steps, rather than for the arrangement order of limitation various method steps or limits the enforceable model of the present invention
It encloses, relativeness is altered or modified, and without material changes in technical content, when being also considered as, the present invention is enforceable
Scope.
Desalination control salt of the present invention refers to desalination and/or control salt.
Strand lake and reservoir desalination control salt method provided in this embodiment, at least includes the following steps:
Bottom storehouse topsoil is turned over: the bottom storehouse topsoil for treating the lake and reservoir of desalination control salt is turned over, and changes topsoil
Earth permeability；
Fresh water introduces: introducing the solvent that fresh water is precipitated as soil salt；
It stirs with water: under the depth condition that can meet stirring, topsoil being filled using churned mechanically form
Divide stirring, promotes soil salt dissolution；
Natural sedimentation: after being stirred with water by way of staticly settling, by mud natural sedimentation；
Salt water outlet: lake and reservoir is discharged in the high salinity water body after completing natural sedimentation using water pump and/or drainage gate；
It changes clothes repeatedly: repeatedly recycling the fresh water and introduce, band water stirs, natural sedimentation, salt water outlet Four processes；
Land smoothing: after changing clothes step repeatedly described in completing, the topsoil in desalination control salt lake and reservoir is rammed using machinery
It is real to flatten；
Clear reservoir filling: during cleaning desalination control salt after the waste that lake and reservoir generates, it is de- to complete strand lake and reservoir for reservoir filling
Salt control salt.
In one embodiment, before carrying out the Soil tillage, carry out first water body outlet: using pumping and/or
Drainage gate excludes desalination control salt lake and reservoir water body.
In one embodiment, before carrying out the bottom storehouse topsoil and turning over, original water body outlet and surface layer are carried out
Soil desiccation guarantees that soil turns over the bearing capacity and topsoil of mechanical equipment and reaches fragmentation effect.
In further embodiment, based on the first water body outlet is arranged with lock, supplemented by pumping.Be conducive to save electricity
Power consumption.
Preferably, the flow control of the lock row, pumping meet the requirement being vented in reservoir 3~5 days.
The first water body outlet can omit this step for reservoir is created into before formal water inlet.
In one embodiment, the bottom storehouse topsoil, which is turned over, carries out topsoil complete cultivation using rotary cultivator；
Preferably, it is carried out using large-scale rotary cultivator.Efficiency is turned over to increase.
The rotary cultivator turns over route and uses " it " font route.
Further, the large-scale rotary cultivator breadth is greater than 2m, and revolving speed is greater than 600r/min.
It is determined preferably, the bottom storehouse topsoil turns over thickness according to on-site soil compactness and coverage effect, it is minimum
Not less than 20cm.
Further, the range of the Soil tillage includes bottom storehouse and library week.The reservoir refers in reservoir around water
One week position of Kuku wall.
In one embodiment, when the fresh water introduces, chlorine ion concentration is lower than 150mg/L in the fresh water that is introduced into.
Further, fresh water introducing is carried out by the way of multipoint water feeding, the multipoint water feeding at least includes the following steps:
From the different location of pilotage water, two or more the intake tunnel being connected with desalination control salt lake and reservoir water inlets are set；Alternatively, from drawing
A total intake tunnel being connected with reservoir is arranged in pool, and more than two points of intake tunnels are arranged on total intake tunnel and connect
Connect the water inlet of desalination control salt region.
Preferably, divide intake tunnel that should be uniformly distributed according to the area of lake and reservoir, shape, flow direction etc., be conducive in lake and reservoir shape
It intakes and rinses at Multipoint Uniform.
The water source of fresh water pilotage water is selected from river.The multipoint water feeding contains two or more intake tunnels, can be from two
Different rivers are connected with lake and reservoir.
Flushing water source of the multipoint water feeding in the lower river of the preferable salinity of Various Seasonal as lake and reservoir.
In one embodiment, when fresh water introduces, the scale of construction for introducing fresh water determines that the depth of water is less than according to reservoir area area
1m。
The depth condition that stirring can be met refers to that the depth of water is less than 1m.
In one embodiment, in the band water stirring, the mechanical equipment taken should have shallow water operations function, prevent
Equipment is sunk.Preferably, soft base spiral floating drum multi-function vehicle or boat-carrying rotary tillage machine can be used.
Preferably, the band water stirs Mixing Machine used and selects soft base spiral floating drum multi-function vehicle, is equipped with Stirring
Head uses, and meets submersible demand.
It is furthermore preferred that the Stirring head of the soft base spiral floating drum multi-function vehicle need to extend to bottom storehouse, Lian Shui band soil is together
Stirring, is conducive to soil salt Fast Stripping outlet.
In one embodiment, in the natural sedimentation, the time is staticly settled naturally not less than 24 hours.Preferably,
Not less than 48 hours.Soil in water is set sufficiently to be settled down to bottom storehouse.
The salt water outlet is that reservoir area is discharged in the high concentration water body after dissolved salt.
In one embodiment, outer discharge method uses based on lock row, supplemented by pumping.
In one embodiment, when salt water outlet, salt water is discharged by water gate or water lift water pump, in the water outlet
Mud plate is blocked according to depth condition setting certain altitude at lock or water lift water pump intake.It prevents from soil from connecting water body to exclude together.
Further, the water gate is arranged far from intake tunnel.
Preferably, the highrank fuel salinity water should drain into another outside and be not used as the river of rinse water or be emitted into flushing use
Section after water river downstream 500m.
In one embodiment, the number changed clothes repeatedly draws according to lake and reservoir bottom skin Soil salinity and fresh water
The water quality and quantity entered determines.Preferably, soil and water quality monitoring need to be added in the repeated flushing process.Preferably, it is described repeatedly
A Soil tillage operation can be increased by changing clothes the every circulation of process 3 times.
The land smoothing refers to and the topsoil after desalination tiles to bottom storehouse according to overlying soil thickness that limitation is deep
Release of the layer soil salt with high salt to water body.
Preferably, it is carried out using car formula vibrated roller smooth.
Preferably, the car formula vibrated roller is small-sized car formula vibrated roller.
It is furthermore preferred that the small-sized car formula vibrated roller quality is less than 800kg.
Further, the smooth route of the car formula vibrated roller uses " it " font route.
After the completion of the clear reservoir filling, water salinity situation, assessment control salt effect can be periodically tracked.
The present invention also provides purposes of the aforementioned strand lake and reservoir desalination control salt method in Soil Desalting control salt.
Example one
2 groups of experiments are arranged in this example altogether, are all made of desalination process step of the present invention and carry out desalination.One background chlorine of group
Ion concentration 2200mg/L recycles 10 multipoint water feedings, stirring precipitating, three processes of salt water outlet；Group two background chlorine from
Sub- concentration 12000mg/L recycles 9 multipoint water feedings, stirring precipitating, three processes of salt water outlet.Group one, group two have four
Basic parameter is identical, 3.5 mu of desalination area, turn over stirring depth 15cm, every time stirring after natural sedimentation for 24 hours, the desalination depth of water
30cm。
1 example of table, one desalination key parameter
| Key parameter | Group one | Group two |
| Background chlorine ion concentration (mg/L) | 2200 | 12000 |
| Change waterside number | 10 | 9 |
| Desalination amount (kg) | 12257 | 33578 |
| Total water consumption (m3) | 6174 | 6100 |
| Salt rejection rate (%) | 73.1 | 76.3 |
As shown in Table 2, the present invention shows the initial saline soil of high and low two kinds of differences 70% or more desalination
Rate, the initial salinity of soil is higher, and desalination amount is also higher.
Example two
3 groups of experiments are arranged in this example altogether, use original position soil in one group two of the example as subsoil, in two group two of example
Soil is as overburden soil after stirring desalination.Tiling cladding thickness is respectively set to 5cm and 10cm, to be control without covering subsoil
Group.Be added 30cm depth overlying water, overlying water chlorine ion concentration be 200mg/L monitor soil salt discharge after overlying water chlorine from
Sub- concentration.This example is 2% without overburden soil salinity, above covers clean soil salinity lower than 0.4%, chloride ion limit value executes " life drink
With water hygiene standard " (GB5749-2006) standard, it is lower than 250mg/L.
2 example two of table controls salt key parameter
| Key parameter | Without covering | Cover 5cm | Cover 10cm |
| The desalination time (d) | 74 | 74 | 74 |
| The final chlorine ion concentration of overlying water (mg/L) | 5874 | 3359 | 1378 |
| Soil releases salt amount (kg) | 0.41 | 0.23 | 0.08 |
As shown in Table 3, Surface mulch less salt soil can effectively inhibit lower layer's soil salt with high salt releasing to upper water column
It puts, soil cladding thickness is bigger, and control salt effect is better.
The result shows that the method desalination control salt of this example works well.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of strand lake and reservoir desalination control salt method, which is characterized in that at least include the following steps:
Bottom storehouse topsoil is turned over: the bottom storehouse topsoil for treating the lake and reservoir of desalination control salt is turned over, and it is logical to change topsoil
Permeability；
Fresh water introduces: introducing the solvent that fresh water is precipitated as soil salt；
It stirs with water: under the depth condition that can meet stirring, topsoil sufficiently being stirred using churned mechanically form
It mixes, promotes soil salt dissolution；
Natural sedimentation: after being stirred with water by way of staticly settling, by mud natural sedimentation；
Salt water outlet: lake and reservoir is discharged in the high salinity water body after completing natural sedimentation using water pump and/or drainage gate；
It changes clothes repeatedly: repeatedly recycling the fresh water and introduce, band water stirs, natural sedimentation, salt water outlet Four processes；
Land smoothing: after changing clothes step repeatedly described in completing, the topsoil in desalination control salt lake and reservoir is tamped by pressure using machinery
It is flat；
Clear reservoir filling: during cleaning desalination control salt after the waste that lake and reservoir generates, reservoir filling completes the desalination control of strand lake and reservoir
Salt.
2. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that carrying out the bottom storehouse topsoil
Before earth is turned over, original water body outlet and topsoil desiccation are carried out, guarantees soil to the bearing capacity and topsoil of mechanical equipment
It turns over and reaches fragmentation effect.
3. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that the bottom storehouse topsoil is turned over
Topsoil complete cultivation is carried out using rotary cultivator；Preferably, it is carried out using large-scale rotary cultivator.
4. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that the bottom storehouse topsoil is turned over
Thickness determines that minimum is not less than 20cm according to on-site soil compactness and coverage effect.
5. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that when the fresh water introduces, introduce
Fresh water in chlorine ion concentration be lower than 150mg/L.
6. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that when fresh water introduces, introduce fresh water
The scale of construction according to reservoir area area determine, the depth of water be less than 1m.
7. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that the depth condition of stirring can be met
Refer to that the depth of water is less than 1m.
8. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that further include following characteristics:
1) in the band water stirring, the mechanical equipment taken should have shallow water operations function, prevent equipment from sinking, preferably, can
Using soft base spiral floating drum multi-function vehicle or boat-carrying rotary tillage machine；
2) in the natural sedimentation, the natural sedimentation time tests according to mud sediment to be confirmed, is not less than 24 hours；Preferably, not
Less than 48 hours.
9. strand lake and reservoir desalination control salt method according to claim 1, which is characterized in that further include one in following characteristics
Item is multinomial:
1) when salt water outlet, salt water is discharged by water gate or water lift water pump, in the water gate or water lift water pump intake
Mud plate is blocked according to depth condition setting certain altitude in place；
2) number changed clothes repeatedly is determined according to the water quality and quantity that lake and reservoir bottom skin Soil salinity and fresh water introduce；It is excellent
Choosing, soil and water quality monitoring need to be added in the repeated flushing process；
3) land smoothing refers to and the topsoil after desalination tiles to bottom storehouse according to overlying soil thickness, limits deep layer
Release of the soil salt with high salt to water body；Preferably, it is carried out using car formula vibrated roller smooth；Preferably, the car
Formula vibrated roller is small-sized car formula vibrated roller.
10. purposes of the strand lake and reservoir desalination control salt method in Soil Desalting control salt as described in claim 1-9 is any.
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Application publication date: 20190920 |