CN106368189A - Saline land improvement drainage system using novel scale inhibitor - Google Patents
Saline land improvement drainage system using novel scale inhibitor Download PDFInfo
- Publication number
- CN106368189A CN106368189A CN201610737194.2A CN201610737194A CN106368189A CN 106368189 A CN106368189 A CN 106368189A CN 201610737194 A CN201610737194 A CN 201610737194A CN 106368189 A CN106368189 A CN 106368189A
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- China
- Prior art keywords
- water
- layer
- scale inhibitor
- left end
- salt
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Abstract
The invention discloses a saline land improvement drainage system using a novel scale inhibitor, and belongs to the technical field of soil improvement. The system comprises a planting layer. A filter layer is arranged at the bottom of the planting layer. The bottom of the filter layer is provided with a drainage pipe. The drainage pipe is obliquely arranged at the bottom of the filter layer. The content of acid and alkali salt in the planting layer is detected through an acid and alkali detection device and transferred to a control device, the control device controls a water pump to work according to a detection result of the acid and alkali detection device, water containing the scale inhibitor in an impounding reservoir is pumped out and sprayed through a water sprayer, acid and alkali salt in the planting layer is drained out to enter a winze along with the water containing the scale inhibitor, an electromagnetic valve is controlled through the control device to be opened and closed, and therefore the scale inhibitor in a scale inhibitor box can enter the impounding reservoir. The water containing the scale inhibitor not only can reduce acid and alkali salt in the planting layer, but also can prevent acid and alkali salt regeneration, and the service cycle of the improved planting layer is prolonged.
Description
Technical field
The present invention relates to technical field of land improvement, the alkaline land improving draining system of specially a kind of use Novel scale inhibitor
System.
Background technology
Salt-soda soil refers to that the reason soil that soil contains excess soluble salt, saline Land is due to soil and ground
Lower water saliferous is too high, and under strong surface evaporation acts on, underground shallow layer water is transported to earth's surface through capillary tube and is evaporated, capillary
Pipe, to during earth's surface water delivery, also takes earth's surface to the salinity in water, and after water is evaporated, soil salt passes through capillarity
Rise and accumulate in upper soll layer, salinity has been left in earth's surface and ground thin solum, so the salinity of accumulation is many, does not have again
There is enough fresh water to dilute and drained, be the formation of the salinization of soil.Saline and alkaline is more than 0.3%, less than 0.8% salt
Or alkali ground is because salinity is big idle, or by using it is simply that being utilized reluctantly, its yield is also very low, economic effect reluctantly
Benefit is bad, and for example Chinese Patent Application No. is 201420338268.1 alkaline land improving devices, and particular content is: alkaline land improving
Device, at least includes one group of unit, and unit is arranged on salt-soda soil, and unit includes multiple mounds and between two mounds
Tank, mound is longitudinally disposed on salt-soda soil, and salt-soda soil subsurface is equipped with the first pipeline, and the first pipeline is connected with second pipe
Road, in mound, saline and alkaline surface layer is equipped with protective layer, the alkaline land improving device of employing to second pipe, and construction is simple, keeps away
Exempt from substantial amounts of labor intensity, time saving and energy saving in buried pipeline, it is convenient to change, and can make full use of rainwater and soil is rushed
Brush salt discharge is it is also possible to carry out deep layer dilution salt discharge using water pipe, although this alkaline land improving device can make full use of rainwater
Soil is carried out washing away salt discharge it is also possible to carry out deep layer dilution salt discharge using water pipe, but low to the utilization rate of water resource, and water provides
Source can not be reclaimed, waste water resource, and the probability ratio of secondary salinization simultaneously is larger, and for example Chinese Patent Application No. is:
201420159671.8 water-saving alkaline land improving devices, particular content is: a kind of water-saving alkaline land improving device, belongs to garden
Woods field of engineering technology, including salt discharging pipe, improvement planting groove and improvement planting soil, described improvement planting soil is by improveing planting groove bottom
Portion is sequentially provided with stone sand bed, geomembrane, neutral layer, nutritive layer and plantation layer upwards, and improvement planting soil outer wall coats gas-permeable nets,
Improvement planting soil outer wall forms an annular space with improvement planting groove inwall, and the bottom of annular space is provided with annular water storage tank, ring
Shape space top is provided with an annular water guide road with holes, and described salt discharging pipe is located in stone sand bed, and connects with annular water storage tank, salt
Alkali pipe is arranged with setting ring along its length, and described improvement planting groove inwall is provided with waterproof layer, described annular space top peripheral
It is provided with a honeycomb duct exceeding edge salt-soda soil, cannelure top inner circumferential is provided with an annular sprinkler pipe, honeycomb duct connects hydrops
Case, water tank is connected with sprinkler pipe, has the advantages that saline and alkaline improved effect is good, economizes on water, this water-saving alkaline land improving device,
Although can saving water resource, the secondary salinization in soil can not be prevented, make the usage cycles in the soil after improvement shorter, because
This designs a kind of alkaline land improving drainage system of use Novel scale inhibitor.
Content of the invention
It is an object of the invention to provide a kind of alkaline land improving drainage system of use Novel scale inhibitor, above-mentioned to solve
In background technology propose the utilization rate to water resource low, water resource can not reclaim, waste water resource, secondary salinization simultaneously can
Energy property, than secondary salinization that is larger and can not preventing soil, makes the shorter problem of the usage cycles in the soil after improvement.
For achieving the above object, the present invention provides a kind of following technical scheme: alkaline land improving of use Novel scale inhibitor
Drainage system, including plantation layer, the bottom of described plantation layer is provided with filter layer, and the bottom of described filter layer is provided with draining
Pipe, described drain pipe is inclined at the bottom of filter layer, and the right-hand member of described drain pipe is provided with staple shaft, the top of described staple shaft
It is provided with well lid, the top of described well lid is provided with rainwater-collecting funnel, and the bottom of described rainwater-collecting funnel is arranged on staple shaft
Inner chamber, the inner chamber of described staple shaft is provided with drinking-water pipe, and the bottom of described drinking-water pipe is provided with defecator, described drinking-water pipe
Left end is provided with electric diaphragm pump, and described electric diaphragm pump is arranged on the left side of staple shaft, and the left end of described electric diaphragm pump passes through
Water pipe is connected with centrifugal filter, and the left end of described centrifugal filter is connected with osmosis filtration case, described reverse osmosis by water pipe
Through the reverse-osmosis filtering device that is internally provided with of filter box, the left end of described osmosis filtration case is connected with water-retention by water pipe
Pond, the top of described cistern is provided with pipeline, and the top of described pipeline is provided with antisludging agent case, the outer wall setting of described pipeline
There is electromagnetic valve, the left end of described cistern is connected with water pumper by water pipe, and the bottom of described water pumper is connected with outlet pipe, institute
The top stating outlet pipe is connected with water jet, and the left side of described water jet is provided with soda acid detection means, a left side for described water pumper
Side is provided with protective cover, and the right-hand member of described protective cover is connected to the left wall of staple shaft, and the left side wall of described protective cover inner chamber is provided with
Control device, described control device respectively with electric diaphragm pump, centrifugal filter, electromagnetic valve, water pumper and soda acid detection means
It is electrically connected with.
Preferably, the top of described drain pipe is provided with water-filtering micropore, and the top of described water-filtering micropore is provided with trickle filter
Net.
Preferably, the intracavity bottom of described defecator is provided with sandy gravel stratum, and the top setting of described sandy gravel stratum is active
Layer of charcoal, the top of described active carbon layer is provided with drainage screen, the top setting absorption spongy layer of described drainage screen, described absorption sea
Continuous layer is arranged on the inner chamber of defecator.
Preferably, described filter layer is rubble filter layer, and described outlet pipe is u-shaped structure.
Preferably, the outer wall of described water jet is provided with fountain head, and the quantity of described fountain head is four groups, sprays water described in four groups
The structure of head is identical, and the bottom of described water jet is provided with bearing.
Preferably, the top right-hand member of described reverse-osmosis filtering device is provided with high-pressure pump, described high-pressure pump and control device
It is electrically connected with, the inner chamber right-hand member of described reverse-osmosis filtering device is provided with high salt fluid reservoir, and the left end of described high salt fluid reservoir sets
It is equipped with first-stage reverse osmosis film, the left end of described first-stage reverse osmosis film is provided with less salt fluid reservoir, the left end of described less salt fluid reservoir
It is provided with two-pass reverse osmosis film, the left end of described two-pass reverse osmosis film is provided with salt-free fluid reservoir, described salt-free fluid reservoir setting
Inner chamber in reverse-osmosis filtering device.
Compared with prior art, the invention has the beneficial effects as follows: the present invention passes through soda acid detection means detection plantation layer
The content of acid-alkali salt passes to control device, and control device works according to the detection of soda acid detection means and output control water pumper,
Water containing antisludging agent in cistern is drawn through water jet spray, makes the acid-alkali salt in plantation layer with containing antisludging agent
Water is discharged in staple shaft by drain pipe, controls the switch of electromagnetic valve by control device, makes the antisludging agent in antisludging agent case
Can enter in cistern, the water containing antisludging agent can reduce the acid-alkali salt in plantation layer, can stop the regeneration of acid-alkali salt again,
So that the usage cycles of the plantation layer after improvement is extended, the water in staple shaft can be made by drinking-water pipe to be utilized again, by drawing water
The defecator of bottom of the tube, enables the large granular impurity in the water pumping to be filtered, and reduces to impurities in water to other
The infringement of equipment, is released the water in staple shaft entrance centrifugal filter by electric diaphragm pump, by centrifugal filter water
In little particle contaminant filter out, so that the work efficiency of reverse-osmosis filtering device is improved, by reverse-osmosis filtering device high
The water filtration of salt becomes salt-free water to enter cistern, and wait is used again, and whole system can realize the cycling and reutilization of water, section
About water resource, simultaneously by the rainwater-collecting funnel at well lid top, enables what rainwater concentrated to be collected, reduces the stream of water resource
Lose.
Brief description
Fig. 1 is present configuration schematic diagram；
Fig. 2 is a portion of the present invention enlarged drawing:
Fig. 3 is filter apparatus configuration schematic diagram of the present invention；
Fig. 4 is water jet structural representation of the present invention；
Fig. 5 is reverse-osmosis filtering device structural representation of the present invention.
In figure: plant layer, 2 filter layers, 3 drain pipies, 31 water-filtering micropores, 32 trickle filter screens, 4 staple shafts, 5 well lids, 6 rainwater for a kind
Collection funnel, 7 drinking-water pipes, 8 defecators, 81 sandy gravel stratums, 82 active carbon layers, 83 drainage screens, 84 absorption spongy layers, 9 electronic every
Membrane pump, 10 centrifugal filters, 11 osmosis filtration casees, 12 reverse-osmosis filtering devices, 121 high-pressure pumps, 122 high salt fluid reservoirs, 123
First-stage reverse osmosis film, 124 less salt fluid reservoirs, 125 two-pass reverse osmosis films, 126 salt-free fluid reservoirs, 13 cisterns, 14 pipelines, 15 resistances
Dirty agent case, 16 electromagnetic valves, 17 water pumpers, 18 outlet pipes, 19 water jets, 191 fountain heads, 192 bearings, 20 soda acid detection means,
21 protective covers, 22 control devices.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1-5, the present invention provides a kind of a kind of technical scheme: alkaline land improving draining of use Novel scale inhibitor
System, including plantation layer 1, the bottom of described plantation layer 1 is provided with filter layer 2, and the bottom of described filter layer 2 is provided with drain pipe
3, described drain pipe 3 is inclined at the bottom of filter layer 2, and the right-hand member of described drain pipe 3 is provided with staple shaft 4, described staple shaft 4
Top is provided with well lid 5, and the top of described well lid 5 is provided with rainwater-collecting funnel 6, and the bottom of described rainwater-collecting funnel 6 sets
Put the inner chamber in staple shaft 4, the inner chamber of described staple shaft 4 is provided with drinking-water pipe 7, and the bottom of described drinking-water pipe 7 is provided with defecator
8, the left end of described drinking-water pipe 8 is provided with electric diaphragm pump 9, and described electric diaphragm pump 9 is arranged on the left side of staple shaft 4, described electricity
The left end of dynamic membrane pump 9 is connected with centrifugal filter 10 by water pipe, and the left end of described centrifugal filter 10 is connected by water pipe
Have an osmosis filtration case 11, described osmosis filtration case 11 be internally provided with reverse-osmosis filtering device 12, described reverse osmosis passes through
The left end of filter box 11 is connected with cistern 13 by water pipe, and the top of described cistern 13 is provided with pipeline 14, described pipeline 14
Top be provided with antisludging agent case 15, the outer wall of described pipeline 14 is provided with electromagnetic valve 16, and the left end of described cistern 13 passes through
Water pipe is connected with water pumper 17, and the bottom of described water pumper 17 is connected with outlet pipe 18, and the top of described outlet pipe 18 is connected with
Water jet 19, the left side of described water jet 19 is provided with soda acid detection means 20, and the left side of described water pumper 17 is provided with protection
Cover 21, the right-hand member of described protective cover 21 is connected to the left wall of staple shaft 4, and the left side wall of described protective cover 21 inner chamber is provided with control dress
Put 22, described control device 22 is detected with electric diaphragm pump 9, centrifugal filter 10, electromagnetic valve 16, water pumper 17 and soda acid respectively
Device 20 is electrically connected with.
Wherein, the top of described drain pipe 3 is provided with water-filtering micropore 31, and the top of described water-filtering micropore 31 is provided with trickle
Filter screen 32, to the water multiple times of filtration containing acid-alkali salt, prevents drain pipe 3 from blocking, the intracavity bottom of described defecator 8 is provided with sand
Gravel bed 81, the top of described sandy gravel stratum 81 is provided with active carbon layer 82, and the top of described active carbon layer 82 is provided with drainage screen 83,
The top setting absorption spongy layer 84 of described drainage screen 83, described absorption spongy layer 84 is arranged on the inner chamber of defecator 8, layering
Filter, effectively reduce the large granular impurity entering in drinking-water pipe 7, reduce the infringement to other equipment, described filter layer 2 is broken
Stone filter layer, filters the silt in the water containing acid-alkali salt, prevents the blocking of drain pipe 3, and described outlet pipe 18 is u-shaped structure, makes
The hydraulic pressure that water containing antisludging agent enters water jet 19 will not be too strong, reduces the infringement of the water jet 19 of water under high pressure, reduces simultaneously
Occupancy to plantation layer 1, the outer wall of described water jet 19 is provided with fountain head 191, and the quantity of described fountain head 191 is four groups, and four
The structure organizing described fountain head 191 is identical, and the bottom of described water jet 19 is provided with bearing 192 makes the spraying range of water jet 19
Larger, can also be rotated under the impact of water sprinkling by bearing 192 simultaneously, make sprinkling more uniform, described reverse osmosiss
The top right-hand member of defecator 12 is provided with high-pressure pump 121, and described high-pressure pump 121 and control device 22 are electrically connected with, and make reverse osmosis
Defecator 12 can be controlled by control device 22 thoroughly, and the inner chamber right-hand member of described reverse-osmosis filtering device 12 is provided with high salt storage
Liquid room 122, the left end of described high salt fluid reservoir 122 is provided with first-stage reverse osmosis film 123, a left side for described first-stage reverse osmosis film 123
End is provided with less salt fluid reservoir 124, and the left end of described less salt fluid reservoir 124 is provided with two-pass reverse osmosis film 125, and described two grades anti-
The left end of permeable membrane 125 is provided with salt-free fluid reservoir 126, and described salt-free fluid reservoir 126 is arranged on reverse-osmosis filtering device 12
Inner chamber, multistage reverse osmosiss, reduce the content of salt in water, enable water to reuse, saving water resource.
Operation principle: the present invention passes through the monitoring of the soda acid salt content to plantation layer 1 for the soda acid detection means 20, makes control fill
Put the on an off of 22 control electromagnetic valves 16, so that the antisludging agent in antisludging agent case 15 is entered in cistern 13, by water pumper
In 17 cisterns 13, the water containing antisludging agent is entered in water jet 19 by outlet pipe 18, and by water jet, 19 contain scale inhibition
The water of agent is sprayed onto in plantation layer 1, by the water containing antisludging agent, the acid-alkali salt in plantation layer 1 is taken away, antisludging agent is also simultaneously
The regeneration of acid-alkali salt can be prevented, effectively prevent after-souring, extend the usage cycles of plantation layer 1, by containing antisludging agent
Water takes away the acid-alkali salt in plantation layer 1, then filters out the silt in water by filter layer 2, reduces and drain pipe 3 is blocked, contain
The water having acid-alkali salt enters drain pipe 3, is discharged in staple shaft 4 by 3 water containing acid-alkali salt of drain pipe, by staple shaft 4
Drinking-water pipe 7, so that the water in staple shaft 4 can be utilized again, saving water resource, by the defecator 8 of drinking-water pipe 7 bottom,
So that the large granular impurity in the water pumping is filtered, reduce the infringement to other equipment to impurities in water, by taking out
Water in 9 staple shafts 4 of the electric diaphragm pump of water pipe 7 left end is released and is utilized, and water enters centrifugal filter 10 by water pipe again,
By the little particle contaminant filter in 10 water of centrifugal filter out, reduce and reverse-osmosis filtering device 12 is damaged, improve anti-
The work efficiency of osmosis filtration device 12, becomes salt-free water to enter cistern by the water filtration of 12 high salt of reverse-osmosis filtering device
13 waits are used again, and whole system can realize the cycling and reutilization of water, saving water resource, pass through well lid 5 top simultaneously
Rainwater-collecting funnel 6, enable what rainwater concentrated to be collected, reduce the loss of water resource, saving water resource.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (6)
1. a kind of alkaline land improving drainage system of use Novel scale inhibitor, including plantation layer (1) it is characterised in that: described kind
The bottom planting layer (1) is provided with filter layer (2), and the bottom of described filter layer (2) is provided with drain pipe (3), described drain pipe (3)
It is inclined at the bottom of filter layer (2), the right-hand member of described drain pipe (3) is provided with staple shaft (4), the top of described staple shaft (4)
It is provided with well lid (5), the top of described well lid (5) is provided with rainwater-collecting funnel (6), the bottom of described rainwater-collecting funnel (6)
Portion is arranged on the inner chamber of staple shaft (4), and the inner chamber of described staple shaft (4) is provided with drinking-water pipe (7), and the bottom of described drinking-water pipe (7) sets
It is equipped with defecator (8), the left end of described drinking-water pipe (7) is provided with electric diaphragm pump (9), described electric diaphragm pump (9) setting
In the left side of staple shaft (4), the left end of described electric diaphragm pump (9) is connected with centrifugal filter (10), described centrifugation by water pipe
The left end of filter (10) is connected with osmosis filtration case (11), the inside setting of described osmosis filtration case (11) by water pipe
There is reverse-osmosis filtering device (12), the left end of described osmosis filtration case (11) is connected with cistern (13) by water pipe, described
The top of cistern (13) is provided with pipeline (14), and the top of described pipeline (14) is provided with antisludging agent case (15), described pipeline
(14) outer wall is provided with electromagnetic valve (16), and the left end of described cistern (13) is connected with water pumper (17) by water pipe, described
The bottom of water pumper (17) is connected with outlet pipe (18), and the top of described outlet pipe (18) is connected with water jet (19), described spray
The left side of hydrophone (19) is provided with soda acid detection means (20), and the left side of described water pumper (17) is provided with protective cover (21), institute
The right-hand member stating protective cover (21) is connected to the left wall of staple shaft (4), and the left side wall of described protective cover (21) inner chamber is provided with control dress
Put (22), described control device (22) respectively with electric diaphragm pump (9), centrifugal filter (10), electromagnetic valve (16), water pumper
(17) it is electrically connected with soda acid detection means (20).
2. a kind of use Novel scale inhibitor according to claim 1 alkaline land improving drainage system it is characterised in that: institute
The top stating drain pipe (3) is provided with water-filtering micropore (31), and the top of described water-filtering micropore (31) is provided with trickle filter screen (32).
3. a kind of use Novel scale inhibitor according to claim 1 alkaline land improving drainage system it is characterised in that: institute
The intracavity bottom stating defecator (8) is provided with sandy gravel stratum (81), and the top of described sandy gravel stratum (81) is provided with active carbon layer
(82), the top of described active carbon layer (82) is provided with drainage screen (83), the top setting absorption sponge of described drainage screen (83)
Layer (84), described absorption spongy layer (84) is arranged on the inner chamber of defecator (8).
4. a kind of use Novel scale inhibitor according to claim 1 alkaline land improving drainage system it is characterised in that: institute
Stating filter layer (2) is rubble filter layer, and described outlet pipe (18) is u-shaped structure.
5. a kind of use Novel scale inhibitor according to claim 1 alkaline land improving drainage system it is characterised in that: institute
The outer wall stating water jet (19) is provided with fountain head (191), and the quantity of described fountain head (191) is four groups, fountain head described in four groups
(191) structure is identical, and the bottom of described water jet (19) is provided with bearing (192).
6. a kind of use Novel scale inhibitor according to claim 1 alkaline land improving drainage system it is characterised in that: institute
The top right-hand member stating reverse-osmosis filtering device (12) is provided with high-pressure pump (121), described high-pressure pump (121) and control device (22)
It is electrically connected with, the inner chamber right-hand member of described reverse-osmosis filtering device (12) is provided with high salt fluid reservoir (122), described high salt fluid reservoir
(122) left end is provided with first-stage reverse osmosis film (123), and the left end of described first-stage reverse osmosis film (123) is provided with less salt liquid storage
Room (124), the left end of described less salt fluid reservoir (124) is provided with two-pass reverse osmosis film (125), described two-pass reverse osmosis film
(125) left end is provided with salt-free fluid reservoir (126), and described salt-free fluid reservoir (126) is arranged on reverse-osmosis filtering device (12)
Inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737194.2A CN106368189A (en) | 2016-08-26 | 2016-08-26 | Saline land improvement drainage system using novel scale inhibitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737194.2A CN106368189A (en) | 2016-08-26 | 2016-08-26 | Saline land improvement drainage system using novel scale inhibitor |
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| CN106368189A true CN106368189A (en) | 2017-02-01 |
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| CN201610737194.2A Pending CN106368189A (en) | 2016-08-26 | 2016-08-26 | Saline land improvement drainage system using novel scale inhibitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188263A (en) * | 2017-07-19 | 2017-09-22 | 金寨益企学农业科技有限公司 | A kind of rice field wastewater discharge device |
| CN107278811A (en) * | 2017-07-19 | 2017-10-24 | 金寨益企学农业科技有限公司 | A kind of field irrigation water treatment facilities |
| CN114645547A (en) * | 2022-03-11 | 2022-06-21 | 重庆三峡学院 | Prevention and control method and device for geological disasters |
| CN117561827A (en) * | 2024-01-17 | 2024-02-20 | 内蒙古农业大学 | Yellow river irrigated area saline and alkaline land improvement afforestation planting structure |
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| CN107188263A (en) * | 2017-07-19 | 2017-09-22 | 金寨益企学农业科技有限公司 | A kind of rice field wastewater discharge device |
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| CN117561827A (en) * | 2024-01-17 | 2024-02-20 | 内蒙古农业大学 | Yellow river irrigated area saline and alkaline land improvement afforestation planting structure |
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Application publication date: 20170201 |
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