CN110713259B - Method for repairing blocked subsurface flow constructed wetland - Google Patents
Method for repairing blocked subsurface flow constructed wetland Download PDFInfo
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- CN110713259B CN110713259B CN201910954823.0A CN201910954823A CN110713259B CN 110713259 B CN110713259 B CN 110713259B CN 201910954823 A CN201910954823 A CN 201910954823A CN 110713259 B CN110713259 B CN 110713259B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012216 screening Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims description 67
- 239000004575 stone Substances 0.000 claims description 37
- 239000002351 wastewater Substances 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 29
- 238000005406 washing Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 208000005156 Dehydration Diseases 0.000 claims 2
- 230000018044 dehydration Effects 0.000 claims 2
- 238000006297 dehydration reaction Methods 0.000 claims 2
- 238000009412 basement excavation Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a method for repairing a blocked subsurface flow constructed wetland, which belongs to the technical field of water treatment and comprises the following steps: step S1, excavating and transferring; step S2, preliminary cleaning, screening and transmitting; step S3, further cleaning, screening and conveying, and discharging waste materials; and step S4, sewage collection and treatment, the method can effectively repair the blocked subsurface flow constructed wetland, and solves the problem that the blocked subsurface flow constructed wetland is easy to influence the surrounding environment.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a method for repairing a blocked subsurface flow constructed wetland.
Background
According to the mode of wastewater runoff, the artificial wetland can be divided into a surface flow wetland, an underflow wetland and a vertical wetland. Subsurface flow wetlands are the type of artificial wetlands that are more commonly used. The subsurface flow wetland is an artificial landscape which takes hydrophilic plants as surface greening materials and sandstone soil as fillers and leads water to permeate and filter naturally. The water-saving device is deeply favored by people by the characteristics of no surface water, small occupied area, high utilization rate and convenient maintenance.
The subsurface flow constructed wetland has the advantages of good heat insulation performance, small influence of climate on treatment effect, good sanitary condition and the like, but the substrate of the subsurface flow constructed wetland is easy to block, and once the subsurface flow constructed wetland is blocked by the crushed stone substrate, corresponding repair measures are required, otherwise the surrounding environment of the subsurface flow constructed wetland is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for repairing a blocked subsurface flow constructed wetland, which solves the problem that the peripheral environment is easily affected after the subsurface flow constructed wetland is blocked.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for repairing a blocked subsurface flow constructed wetland comprises the following steps:
step S1, excavating and transferring;
step S2, preliminary cleaning, screening and transmitting;
step S3, further cleaning, screening and conveying, and discharging waste materials;
and step S4, collecting and treating sewage.
More preferably: in the excavating and transferring process, the crushed stone matrix to be cleaned is excavated and collected and transferred to the feed hopper in step S1.
More preferably: in step S2, in the process of preliminary cleaning, screening and transferring, the crushed stone matrix entering the feed hopper is subjected to water flow washing, and the washed crushed stone matrix is subjected to preliminary screening to obtain large matrix and medium and small matrix, the large matrix is transported to a stacking position by a transport device, and the medium and small matrix is transferred into a drum-type grid screening machine by a transfer device.
More preferably: in step S3, in the further cleaning, screening and transferring process, the medium and small substrates entering the drum-type grid screening machine are washed by high-pressure water flow, and the washed medium and small substrates are screened again to obtain medium substrates, small substrates and substandard substrates, the substandard substrates are discharged with waste, and the medium substrates and the small substrates are transported to corresponding stacking positions by transportation devices.
More preferably: in step S4, in the sewage collection and treatment process, the wastewater which is washed out of the crushed stone matrix in the feed hopper and the wastewater which is washed out of the medium and small matrix in the drum-type grid screening machine are respectively collected into a sewage collection pool, and after precipitation separation, the water-containing sludge is dewatered by a dewatering machine.
More preferably: the feeder hopper inner wall is provided with the one deck rubber pad, is used for the buffering the rubble matrix is right the striking of feeder hopper.
More preferably: the top of the feed hopper is provided with a high-pressure washing nozzle for washing the crushed stone matrix by water flow;
the bottom of the feed hopper is provided with the filter screen through which the wastewater used for washing the crushed stone matrix passes.
More preferably: a discharge hole is formed in one side of the lower portion of the feed hopper, the filter screen is arranged in an inclined mode, and the discharge hole is located in one side of the lowest position of the filter screen;
and a material guide device for controlling the blanking speed is arranged on the discharge port.
More preferably: the guide device comprises a motor, a rotating shaft and a guide plate, the motor is installed on the feeding hopper, one end of the rotating shaft is connected with the motor, the other end of the rotating shaft is connected with the inner wall of the feeding hopper in a rotating mode, the guide plate is fixed on the circumferential surface of the rotating shaft, and the guide plate is located in the discharging port and in contact with the inner wall of the discharging port.
More preferably: and a vibrating screen is arranged below the discharge port and used for screening the washed crushed stone matrix into the large matrix and the medium and lower matrix, and the particle size of the large matrix is larger than 15 cm.
In conclusion, the invention has the following beneficial effects: when the rubble matrix entered into the feeder hopper, high pressure washing nozzle will wash it, wash the waste water that forms and will pass the filter screen and enter into the sewage collecting pit, and rubble matrix after preliminary washing will be under the rotation of stock guide, outwards discharge through the discharge gate. When the motor rotates, the rotating shaft drives the material guide plate to rotate, so that the crushed stone matrix is discharged outwards along with the rotation of the material guide plate, and the discharging speed of the crushed stone matrix is convenient to control. The broken stone matrix discharged from the discharge port is screened into a large matrix and a medium and small matrix under the screening action of the vibrating screen, the large matrix is directly conveyed to a stacking position, the medium and small matrices enter the drum-type grid screening machine for further washing and screening to obtain a medium matrix, a small matrix and a matrix which does not conform to the specification, waste is discharged outside the matrix which does not conform to the specification, the medium matrix and the small matrix are respectively conveyed to corresponding stacking positions, washing wastewater generated in matrix treatment enters the sewage collecting pond, after the wastewater is collected and treated, the wastewater can be recycled after treatment, and organic matters and silt slurry in the artificial wetland can be dewatered by the sewage treatment system for outward transportation, so that the pollution to surrounding water bodies is reduced. The method can effectively repair the blocked subsurface flow constructed wetland, and solves the problem that the blocked subsurface flow constructed wetland is easy to influence the surrounding environment.
Drawings
FIG. 1 is a flow chart of an embodiment, which is mainly used for embodying a method for repairing a blocked subsurface flow constructed wetland;
fig. 2 is a schematic sectional view of the embodiment, which is mainly used for embodying the structure of the feed hopper.
In the figure, 1, a feed hopper; 2. a high pressure flush jet; 3. a waste water outlet; 4. filtering with a screen; 5. a discharge port; 61. a rotating shaft; 62. a material guide plate; 7. a sewage collection tank; 8. fine grids; 9. a feed inlet; 10. a water collection tank; 11. and (7) a rubber pad.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example (b): a method for repairing a blocked subsurface flow constructed wetland, as shown in figures 1 and 2, comprises the following steps:
step S1, excavating and transferring
The regional rubble matrix that will clear up excavates, collects to transport it to feeder hopper 1 in through the crawler-type machine of digging. In order to ensure the water drainage of the excavator bucket, the excavator bucket of the crawler excavator adopts a grid bucket, so that water flows away from the grid bucket in the excavating process of the crawler excavator, and crushed stone matrix is left in the grid bucket to facilitate separation of the water from dirt.
Step S2, preliminary cleaning, screening and transferring
The crushed stone matrix entering the feed hopper 1 is washed by high-pressure water flow, the washed crushed stone matrix is primarily screened to obtain large matrix and medium and small matrix, the large matrix is transported to a stacking position by a transporting device, and the medium and small matrix is transported to a drum-type grid screening machine by a transporting device.
Referring to fig. 2, in order to cushion the striking of rubble matrix to feeder hopper 1, specifically, feeder hopper 1 inner wall is provided with one deck rubber pad 11, avoids causing the damage to feeder hopper 1 at the machine of digging loading in-process, noise reduction. Feed hopper 1 is last to be equipped with feed inlet 9 and discharge gate 5, and feed inlet 9 is the horn mouth form, and in order to avoid the rubble directly to pound on discharge gate 5, discharge gate 5 and the setting of staggering of feed inlet 9, and feed inlet 9 sets up at feed hopper 1 top, and discharge gate 5 sets up in 1 lower part one side of feed hopper.
Referring to fig. 2, high pressure washing nozzle 2 is installed at feeder hopper 1 top for carry out rivers to the rubble matrix and wash, high pressure washing nozzle 2 is inside towards feeder hopper 1. A waste water outlet 3 is arranged at the bottom of the feed hopper 1, and a filter screen 4 for washing waste water of the crushed stone matrix to pass through is arranged on the waste water outlet 3. For the convenience of disassembling and replacing the filter screen 4, the filter screen 4 can be movably connected to the waste water outlet 3, the movable connection can be a buckle connection or a bolt connection, and the specific movable connection mode is not limited here. In order to rapidly discharge the crushed stone matrix through the discharge port 5 and prevent the wastewater from being discharged through the discharge port 5, specifically, the filter screen 4 is disposed in an inclined manner, and the discharge port 5 is located on the lowest position side of the filter screen 4.
Referring to fig. 2, a material guiding device for controlling the discharging speed of the crushed stone matrix is installed on the discharging port 5, and the material guiding device comprises a motor, a rotating shaft 61 and a material guiding plate 62. The motor is installed on 1 shell of feeder hopper, and pivot 61 is located discharge gate 5 and one end passes 1 shell of feeder hopper and is connected with the motor, and the other end rotates with 1 inner wall of feeder hopper to be connected. The guide plates 62 are fixed on the circumferential surface of the rotating shaft 61 and are coaxially and rotatably arranged with the rotating shaft 61, the number of the guide plates 62 is multiple, specifically, four guide plates 62 are arranged, and the four guide plates 62 are uniformly distributed on the circumferential surface of the rotating shaft 61. The guide plate 62 is located in the discharge port 5 and contacts the inner wall of the discharge port 5.
In the above technical scheme, when the crushed stone matrix enters the feed hopper 1 through the feed inlet 9, the high-pressure washing nozzle 2 washes the crushed stone matrix, the waste water formed by washing passes through the filter screen 4 and is discharged outwards through the waste water outlet 3, and the crushed stone matrix after primary washing is discharged outwards through the discharge outlet 5 under the rotation of the material guide plate 62. When the motor rotates, the rotating shaft 61 drives the material guide plate 62 to rotate, so that the crushed stone matrix is discharged outwards along with the rotation of the material guide plate 62, and the discharging speed of the crushed stone matrix is convenient to control.
A vibrating screen is arranged below the discharge port 5 and is used for screening the washed crushed stone matrix into a large matrix and a middle-lower matrix. The aperture specification of the sieve mesh of the vibrating sieve is 15cm, so that the particle size of the large matrix is larger than 15cm, and the particle size of the medium and lower matrixes is larger than or equal to 15 cm. The vibrating screen is a linear vibrating screen. The large substrates falling from the screen of the vibrating screen are transported to a designated stacking position through a transporting device, wherein the transporting device can be a conveyor belt or a transporting vehicle, and the specific transporting mode is not limited herein. And the medium and lower matrixes falling off through the vibrating screen mesh are conveyed into the drum-type grid screening machine through a conveying device, or the drum-type grid screening machine is directly arranged at the medium and lower matrix outlet below the vibrating screen mesh, so that the medium and lower matrixes falling off from the vibrating screen mesh directly enter the drum-type grid screening machine.
Step S3, further cleaning, screening and conveying, and discharging the waste
And (3) washing the medium and small substrates entering the drum-type grid screening machine by high-pressure water flow, screening the washed medium and small substrates again to obtain medium substrates, small substrates and substandard substrates, discharging waste materials out of the substandard substrates, and respectively transporting the medium substrates and the small substrates to corresponding stacking positions by a transporting device.
Similarly, the drum-type grating screening machine is provided with a high-pressure washing nozzle 2 which is used for washing the medium and small substrates entering the drum-type grating screening machine by water flow. The grid meshes of the drum-type grid screening machine can be designed according to the sizes of field matrixes, and are mainly used for classifying the matrixes with different particle sizes, namely screening the medium and small matrixes into small matrixes and medium matrixes. The medium and small substrates will be transported to the corresponding stacking positions by the transportation means, respectively. The transportation device may be a conveyor belt or a transportation vehicle, and the specific transportation mode is not limited herein.
In the technical scheme, the medium and small matrixes are washed and screened again to obtain clean small crushed stone matrixes and medium crushed stone matrixes, and the small crushed stone matrixes and the medium crushed stone matrixes are respectively conveyed to corresponding stacking positions.
Step S4, collecting and treating sewage
Referring to fig. 2, wastewater from the feed hopper 1 after washing crushed stone matrix and wastewater from the drum-type grid screening machine after washing medium and small matrix are collected and collected in the sewage collection tank 7. Specifically, sewage collecting tank 7 is located 1 waste water export 3 below of feeder hopper, and fine grid 8 is installed to 7 top opening parts of sewage collecting tank for the solid impurity in the interception waste water, fine grid 8 is installed on 7 upper portions of sewage collecting tank. A water collecting tank 10 for collecting wastewater is arranged below the grid of the drum-type grid screening machine, and the water collecting tank 10 is used for guiding the wastewater in the drum-type grid screening machine to the top opening of the sewage collecting tank 7. And (3) carrying out sedimentation separation on the sewage in the sewage collecting tank 7 through a silt sedimentation tank and adding, stirring, sedimentation separation through a secondary sedimentation tank to obtain recyclable water and water-containing sludge, and dehydrating the water-containing sludge through a dehydrator, wherein the dehydrator is a belt filter press or a plate-and-frame filter press. The water content of the water-containing sludge treated by the dehydrator can be 75-80%.
In the technical scheme, wastewater after the crushed stone matrix is washed in the feed hopper 1 and wastewater after the medium and small matrixes are washed in the drum-type grid screening machine are collected and subjected to centralized purification treatment to obtain recyclable water and dehydrated sludge, the recyclable water can be recycled, and the dehydrated organic matters and sludge slurry blocking the artificial wetland are transported outside, so that pollution to surrounding water bodies is reduced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that several improvements and modifications without departing from the principle of the present invention will occur to those skilled in the art, and such improvements and modifications should also be construed as within the scope of the present invention.
Claims (9)
1. A method for repairing a blocked subsurface flow constructed wetland is characterized by comprising the following steps: the method comprises the following steps:
step S1, excavating and transferring;
step S2, preliminary cleaning, screening and transmitting;
step S3, further cleaning, screening and conveying, and discharging waste materials;
step S4, collecting and treating sewage,
in the step S4, in the sewage collecting and treating process, the waste water after the crushed stone matrix is washed in the feed hopper (1) and the waste water after the medium and small matrix is washed in the drum-type grid screening machine are respectively collected into a sewage collecting tank (7), the sewage collecting tank (7) is positioned below the waste water outlet (3) of the feed hopper (1), a fine grid (8) is arranged at the top opening of the sewage collecting tank (7) and used for intercepting solid impurities in the waste water, the fine grid (8) is arranged at the upper part of the sewage collecting tank (7), a water collecting tank (10) for collecting the waste water is arranged below the grid of the drum-type grid screening machine, the water collecting tank (10) is used for guiding the waste water in the drum-type grid screening machine to the top opening of the sewage collecting tank (7), the sewage in the sewage collecting tank (7) is subjected to sedimentation separation in a silt sedimentation tank and is subjected to chemical adding, stirring, sedimentation and separation in a secondary sedimentation tank, and (3) obtaining recyclable water and water-containing sludge, wherein the water-containing sludge is subjected to dehydration treatment by a dehydrator, the dehydrator is a belt filter press or a plate-and-frame filter press, and the water content of the water-containing sludge after the dehydration treatment can be 75-80%.
2. The method for repairing the blocked subsurface flow constructed wetland according to claim 1, which is characterized in that: in the step S1, in the excavation and transfer process, the crushed stone matrix to be cleaned is excavated, collected and transferred to the feed hopper (1).
3. The method for repairing the blocked subsurface flow constructed wetland according to claim 2, which is characterized in that: in the step S2, in the process of preliminary cleaning, screening and conveying, the crushed stone matrixes entering the feed hopper (1) are washed by water flow, the washed crushed stone matrixes are preliminarily screened to obtain large matrixes and medium and small matrixes, the large matrixes are conveyed to a stacking position through a conveying device, and the medium and small matrixes are conveyed to a drum-type grid screening machine through a conveying device.
4. The method for repairing the blocked subsurface flow constructed wetland according to claim 3, which is characterized in that: in step S3, in the further cleaning, screening, and transferring processes, the medium and small substrates entering the drum-type grid screening machine are washed by high-pressure water flow, and the washed medium and small substrates are screened again to obtain medium substrates, small substrates, and non-compliant substrates, the non-compliant substrates are discharged with waste, and the medium substrates and the small substrates are transported to corresponding stacking positions by transportation devices.
5. The method for repairing the blocked subsurface flow constructed wetland according to claim 2, which is characterized in that: the inner wall of the feed hopper (1) is provided with a layer of rubber pad (11) for buffering the impact of the crushed stone matrix on the feed hopper (1).
6. The method for repairing the blocked subsurface flow constructed wetland according to claim 2, which is characterized in that: the top of the feed hopper (1) is provided with a high-pressure washing nozzle (2) for washing the crushed stone matrix by water flow;
and a filter screen (4) for washing the waste water of the crushed stone matrix to pass through is arranged at the bottom of the feed hopper (1).
7. The method for repairing the blocked subsurface flow constructed wetland according to claim 6, which is characterized in that: a discharge hole (5) is formed in one side of the lower portion of the feed hopper (1), the filter screen (4) is arranged in an inclined mode, and the discharge hole (5) is located in one side of the lowest position of the filter screen (4);
and a material guide device for controlling the blanking speed is arranged on the discharge hole (5).
8. The method for repairing the blocked subsurface flow constructed wetland according to claim 7, which is characterized in that: the guide device includes motor, pivot (61) and stock guide (62), the motor is installed on feeder hopper (1), pivot (61) one end with the motor is connected, the other end with feeder hopper (1) inner wall rotates and connects, stock guide (62) are fixed pivot (61) circumference surface, stock guide (62) are located in discharge gate (5) and with discharge gate (5) inner wall contact.
9. The method for repairing the blocked subsurface flow constructed wetland according to claim 7, which is characterized in that: and a vibrating screen is arranged below the discharge port (5) and used for screening the washed crushed stone matrix into a large matrix and a middle-lower matrix, and the particle size of the large matrix is larger than 15 cm.
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| CN101723547A (en) * | 2009-12-03 | 2010-06-09 | 复旦大学 | Anti-blocking method for artificial wetland |
| CN203227622U (en) * | 2013-04-28 | 2013-10-09 | 东海县晶盛源硅微粉有限公司 | Silicon dioxide washing device |
| CN203389745U (en) * | 2013-07-01 | 2014-01-15 | 福建省大地管桩有限公司 | Rubble screening and washing system for tubular pile production |
| CN207754133U (en) * | 2017-12-25 | 2018-08-24 | 奉节县堃虹生态农业发展有限公司 | A kind of maize sheller feed hopper of adjustable charging rate |
| CN109987717A (en) * | 2019-05-16 | 2019-07-09 | 上海勘测设计研究院有限公司 | Anti-clogging construction and current wetland for current wetland |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6766322B1 (en) * | 2000-06-23 | 2004-07-20 | G. Randall Bell | Real estate disclosure reporting method |
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2019
- 2019-10-09 CN CN201910954823.0A patent/CN110713259B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723547A (en) * | 2009-12-03 | 2010-06-09 | 复旦大学 | Anti-blocking method for artificial wetland |
| CN203227622U (en) * | 2013-04-28 | 2013-10-09 | 东海县晶盛源硅微粉有限公司 | Silicon dioxide washing device |
| CN203389745U (en) * | 2013-07-01 | 2014-01-15 | 福建省大地管桩有限公司 | Rubble screening and washing system for tubular pile production |
| CN207754133U (en) * | 2017-12-25 | 2018-08-24 | 奉节县堃虹生态农业发展有限公司 | A kind of maize sheller feed hopper of adjustable charging rate |
| CN109987717A (en) * | 2019-05-16 | 2019-07-09 | 上海勘测设计研究院有限公司 | Anti-clogging construction and current wetland for current wetland |
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| CN110713259A (en) | 2020-01-21 |
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