CN108793651B - River silt rapid dehydration solidification equipment - Google Patents
River silt rapid dehydration solidification equipment Download PDFInfo
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- CN108793651B CN108793651B CN201810708495.1A CN201810708495A CN108793651B CN 108793651 B CN108793651 B CN 108793651B CN 201810708495 A CN201810708495 A CN 201810708495A CN 108793651 B CN108793651 B CN 108793651B
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- filter screen
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of environmental geotechnics, and relates to a rapid river sludge dewatering and curing device which comprises an upper screening and curing device and a lower storage and drying device connected with the upper screening and curing device; the upper screening and solidifying device comprises a filter cylinder; the filter cartridge is a hollow cylinder structure; the filter cartridge comprises a feed inlet and a discharge outlet; a filter screen is arranged inside the filter cartridge; the side wall of the filter cartridge is provided with a vent hole communicated with the inside of the filter cartridge; the feed inlet is communicated with the discharge outlet through a filter screen; the discharge port is communicated with the lower storage drying device. The river sludge rapid dehydration and solidification device provided by the invention has the advantages of excellent solidification effect, short solidification period, simple construction process, low cost, high environmental protection and easy popularization in a large range, and provides an effective scheme for accelerating the infrastructure and economic development of China.
Description
Technical Field
The invention belongs to the technical field of environmental geotechnics, relates to a rapid dehydration and solidification device for river silt, and particularly relates to a solidification device for obtaining silt which is free of large granular impurities and high in solidification strength by utilizing the flowability of silt with high water content through a screening system.
Background
The sludge is a flocculent and honeycomb structure formed by deposition of fine particles such as clay minerals and the like in slow flowing water environments such as oceans or lake regions and the like under the action of inter-granular electrostatic force and molecular attraction. The sludge is engineering garbage soil with high water content, the water content of the engineering garbage soil is 1.2-2.0 times of the liquid limit water content, the engineering garbage soil is in a flowing state, almost has no strength, and cannot be directly used for engineering.
The number of the sludge in the Guangdong nations, rivers and lakes is countless, the quantity of the sludge is incomparable, and taking Wuhan city as an example, the total quantity of the sludge in the city is as high as 4.8 billion cubic meters, and the quantity is astonishing. The foundation of the sludge siltation area is very soft and is not easy to utilize, so that a great amount of land resources are wasted.
At present, the domestic resource utilization of the sludge mainly comprises methods such as mechanical treatment, hydraulic filling and land reclamation, physical dehydration, heat treatment, curing agent treatment and the like. Although a large amount of solidified soil can be obtained by mechanical treatment, the construction process is complex and expensive. Although the hydraulic reclamation land can be treated in a large scale, a large amount of foundation treatment cost is required to be invested after hydraulic reclamation, and the treatment period is long. The physical treatment method is mainly a natural air-drying method, which is economical, but is generally difficult to implement due to the influence of fields, time, climate, and the like. The heat treatment method can obtain finished products with higher added value, but the treatment capacity and a fixed treatment plant cause the finished products to have certain limitations. The curing agent treatment method can consume a large amount of produced dredged silt, solves the problem of soil shortage in partial areas, and has the advantages of large treatment capacity and short treatment time.
Disclosure of Invention
In order to solve the technical problems in the background description, the invention provides the rapid river sludge dewatering and curing device which is short in curing period, simple in construction process, low in cost, high in environmental protection and excellent in reinforcing effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a river silt rapid dehydration solidification equipment which characterized in that: the river sludge rapid dehydration and solidification device comprises an upper screening and solidification device and a lower storage and drying device connected with the upper screening and solidification device; the upper screen solidification device comprises a filter cartridge; the filter cartridge is a hollow cylinder structure; the filter cartridge comprises a feed inlet and a discharge outlet; a filter screen is arranged inside the filter cartridge; the side wall of the filter cartridge is provided with a vent hole communicated with the inside of the filter cartridge; the feed inlet is communicated with the discharge outlet through a filter screen; the discharge port is communicated with the lower storage drying device.
Preferably, the screen used in the present invention is a multi-stage screen.
Preferably, the filter screens adopted by the invention comprise an upper filter screen, a middle filter screen and a lower filter screen which are sequentially arranged from top to bottom; the mesh aperture of the upper filter screen, the mesh aperture of the middle filter screen and the mesh aperture of the lower filter screen are not equal; the ventilation hole is arranged at the bottom of the lower filter screen and communicated with the interior of the filter cylinder.
Preferably, the mesh aperture of the upper filter screen, the mesh aperture of the middle filter screen and the mesh aperture of the lower filter screen adopted by the invention are sequentially reduced, and the mesh size is selected through a sinking test according to the sludge property so as to control the sinking speed to be in a reasonable interval.
Preferably, the distance between the upper filter screen and the feed inlet, the distance between the upper filter screen and the middle filter screen, the distance between the middle filter screen and the lower filter screen and the distance between the lower filter screen and the discharge outlet which are adopted by the invention are not less than 30 cm.
Preferably, the distance between the upper filter screen and the feed inlet is larger than the distance between the upper filter screen and the middle filter screen.
Preferably, the lower strainer employed in the present invention is provided with a reinforcing rib at a position close to the vent hole.
Preferably, the lower screen used in the present invention is of an inverted conical shape.
Preferably, the lower storage drying device adopted by the invention is a collecting box which is integrally shaped like a frustum pyramid; the collecting box comprises a bottom surface and a side wall extending upwards along the outer edge of the bottom surface; the top and the bottom of the collecting box are respectively provided with an inlet and an outlet; the discharge port of the filter cartridge is communicated with the outlet of the collecting box through the inlet of the collecting box; the side wall of the collecting box is a detachable side wall; a handle is arranged on the inner wall (comprising a side surface and a bottom surface) of the collecting box; and the inner wall of the collecting box is provided with geotextile.
Preferably, a water absorbing layer is arranged between the geotextile and the inner wall of the collecting box; a sealing cover is arranged on the feed inlet of the filter cylinder; the bottom of the collecting box is provided with a base; the upper screening and curing device is provided with an internal thread connected with the lower storage and drying device; the lower storage drying device is provided with an external thread connected with the upper screening curing device; the upper screening and curing device is connected with the lower storage and drying device through threads.
The invention has the advantages that:
the invention provides a river sludge rapid dehydration and solidification device, which comprises an upper screening and solidification device and a lower storage and drying device connected with the upper screening and solidification device; the upper screening and solidifying device comprises a filter cylinder; the filter cartridge is a hollow cylinder structure; the filter cartridge comprises a feed inlet and a discharge outlet; a filter screen is arranged inside the filter cartridge; the side wall of the filter cartridge is provided with a vent hole communicated with the inside of the filter cartridge; the feed inlet is communicated with the discharge outlet through a filter screen; the discharge port is communicated with the lower storage drying device. Firstly, obtaining silt soil without large-particle impurities through a screening device; then the powdery curing agent blown in from the vent holes can be fully contacted with the silt soil, so that the optimal utilization rate of the curing agent is achieved, and the use of manpower or large-scale instruments is not needed; and finally, further drying the surface of the silt by using a water absorption material stored on the inner wall of the silt soil in the lower device, and particularly guiding pore water to the bottom of the device by using the action of gravity to fully dry the silt soil. The invention provides a substantial solution to the current sludge treatment problem in China, has the advantages of excellent curing effect, short curing period, simple construction process, low cost, high environmental protection, capability of obtaining the cured soil without large-particle impurities through a screening system, easiness for popularization in a large range and capability of providing an effective scheme for accelerating the infrastructure and economic development in China.
Drawings
FIG. 1 is a schematic structural diagram of a river sludge rapid dewatering and solidifying device provided by the invention;
FIG. 2 is a front view of the basic construction of the top screen curing unit provided by the present invention;
FIG. 3 is a front view showing the basic construction of a lower storage drying device provided by the present invention;
the labels in the figure are:
1-sealing the cover; 2-filtering the screen; 3-a vent hole; 4-lower storage drying means; 5-internal threads connected to the lower storage drying means; 6-external threads connected to the upper device; 7-a handle; 8-geotextile; 9-base.
Detailed Description
Referring to fig. 1 and 2, the invention provides a river sludge rapid dehydration and solidification device, which comprises an upper screening and solidification device and a lower storage and drying device 4 connected with the upper screening and solidification device; the upper screening and solidifying device comprises a filter cylinder; the filter cartridge is a hollow cylinder structure; the filter cartridge comprises a feed inlet and a discharge outlet; a filter screen 2 is arranged inside the filter cartridge; the side wall of the filter cartridge is provided with a vent hole 3 communicated with the inside of the filter cartridge; the feed inlet is communicated with the discharge outlet through a filter screen 2; the discharge port is communicated with the lower storage drying device 4.
The filter screen 2 adopted by the invention is a multi-stage filter screen, which comprises an upper filter screen, a middle filter screen and a lower filter screen from top to bottom in sequence; the mesh aperture of the upper filter screen, the mesh aperture of the middle filter screen and the mesh aperture of the lower filter screen are not equal; the vent hole 3 is arranged at the bottom of the lower filter screen and communicated with the inside of the filter cylinder. The mesh aperture of the upper filter screen, the mesh aperture of the middle filter screen and the mesh aperture of the lower filter screen are sequentially reduced, and the mesh size is selected through a sinking test according to the nature of sludge so as to control the sinking speed of the upper filter screen to be in a reasonable interval. The distance between the upper filter screen and the feed inlet, the distance between the upper filter screen and the middle filter screen, the distance between the middle filter screen and the lower filter screen and the distance between the lower filter screen and the discharge outlet are not less than 30 cm. The distance between the upper filter screen and the feed inlet is greater than the distance between the upper filter screen and the middle filter screen. The lower filter screen is provided with a reinforcing rib at a position close to the vent hole 3, and the lower filter screen is in an inverted cone shape.
Referring to fig. 3, the lower storage drying device 4 employed in the present invention is a collection box integrally shaped as a prism; the collecting box is provided with a collecting box inlet and a collecting box outlet; the discharge port of the filter cartridge is communicated with the outlet of the collecting box through the inlet of the collecting box; the side wall of the collecting box is a detachable side wall; the inner wall of the collecting box is provided with a handle 7; the inner wall of the collecting box is provided with geotextile 8. A water absorbing layer is arranged between the geotextile 8 and the inner wall of the collecting box; a sealing cover 1 is arranged on a feed inlet of the filter cylinder; the bottom of the collecting box is provided with a base 9; the upper screening and curing device is provided with an internal thread 5 connected with the lower device; the lower storage drying device 4 is provided with an external thread 6 connected with the upper screening curing device; the upper screening and curing device and the lower storage and drying device 4 are connected through threads.
The invention is described in detail below with reference to the following figures and detailed description:
the invention belongs to the field of environmental geotechnical engineering, and relates to a river sludge rapid dehydration and solidification device which comprises a sealing cover 1, a filter screen 2, a vent hole 3, an internal thread 5 connected with a lower device in an upper sieving and solidification device, an external thread 6 connected with the upper device in a lower storage and drying device, a handle 7, geotechnical cloth 8 and a base 9. The upper screening and solidifying device can screen and filter large particles in silt to obtain silt soil without large particle impurities, and a powdery solidifying agent is blown in through the lower vent hole of the device to fully reinforce the silt soil. The lower drying and storing device can store and further dry soil.
The invention, in particular use:
firstly, obtaining silt soil without large particle impurities by utilizing the fluidity of the silt soil with high water content through a filter cylinder of a riverway silt rapid dehydration and solidification device; then the powdery curing agent blown in from the vent holes can be fully contacted with the silt soil, so that the optimal utilization rate of the curing agent is achieved, and the use of manpower or large-scale instruments is not needed; and finally, further drying the surface of the silt by using a water absorbing material stored between the geotextile in the lower device and the inner wall of the geotextile, and particularly guiding pore water to the bottom of the device by using the action of gravity to fully dry silt soil.
Wherein, the filter screen in the upper screening and solidifying device is a stainless steel mesh sheet with good bearing capacity; the stainless steel filter screen adopted in the upper screening and solidifying device has the screen hole diameters of 10mm, 5mm and 2mm from top to bottom, and the aperture size is determined according to the screening test in the geotechnical test method standard and the minimum particle size of round gravel and corner gravel particles in coarse-grained soil; the vertical distance interval is 30 cm. Meanwhile, in order to prevent sludge from splashing outwards in work, a first filter screen from top to bottom in the upper screening and solidifying device is arranged at a vertical distance of 50cm from the hole; in order to prevent the screened sludge from blocking the vent hole channel and affecting the discharge of the curing agent, a third screen from top to bottom in the upper screening and curing device compacts a minor arc arch of the screen on the upper surface close to the vent hole of the container wall, the distance from the chord to the arc top is preferably set to be 5-10cm, preferably 8cm, as shown in fig. 2, and if necessary, the compacted screen can be made into an inclined shape, for example, the inclined angle is not less than 5 degrees, so as to prevent the sludge from accumulating at the inclined position and affecting the screening and curing effect.
The vent hole in the upper screening and solidifying device is arranged below the third filter screen, and the vent hole can be used as a channel for blowing the powdery solidifying agent into the device by an air blower so as to ensure that the sludge is uniformly contacted with the solidifying agent, thereby achieving the full utilization of the solidifying agent and being also used as a knob for spirally fastening the upper device and the lower device; the powdery curing agent blown into the device through the vent hole is in large-area contact with the sludge, so that the curing agent is fully utilized; the curing agent is powdery, so that the curing efficiency can be improved, and the curing agent is a mixture of any two or more than two of ordinary portland cement, fly ash and MgO; before the whole device works, the ventilation hole is used as a knob to screw the internal thread at the bottom of the upper screening and curing device into the external thread at the top of the lower storage and drying device, so that the internal thread is tightly connected. The lower part storage drying device is internally provided with a layer of corrosion-resistant and high-permeability geotextile, and the geotextile can be selected to be impermeable. The geotextile is a water-permeable geosynthetic material formed by needling or weaving synthetic fibers, and can adopt needle-punched non-woven geotextile, needle-punched non-woven fabric and PE film composite geotextile and non-woven and woven composite geotextile, and is selected and used according to specific conditions in engineering. A gap is reserved between the geotextile inside the lower storage drying device and the wall of the container, and the gap is used as a replacement channel of the water absorbing material. And a channel opening handle is arranged at the connecting position of the geotextile and the wall of the container in the lower storage drying device. Opening the channel to open the handle, putting the planar material made of the high water absorption material into the channel, and further drying the sludge.
Claims (4)
1. The utility model provides a river silt rapid dehydration solidification equipment which characterized in that: the river sludge rapid dehydration and solidification device comprises an upper screening and solidification device and a lower storage and drying device (4) connected with the upper screening and solidification device;
the upper screen solidification device comprises a filter cartridge; the filter cartridge is a hollow cylinder structure; the filter cartridge comprises a feed inlet and a discharge outlet; a filter screen (2) is arranged in the filter cylinder; the side wall of the filter cylinder is provided with a vent hole (3) communicated with the inside of the filter cylinder, and powdery curing agent is blown in from the vent hole (3); the feed inlet is communicated with the discharge outlet through a filter screen (2); the discharge hole is communicated with a lower storage drying device (4); the filter screen (2) is a multi-stage filter screen; the filter screen (2) comprises an upper filter screen, a middle filter screen and a lower filter screen which are arranged from top to bottom in sequence; the mesh aperture of the upper filter screen, the mesh aperture of the middle filter screen and the mesh aperture of the lower filter screen are not equal; the vent hole (3) is arranged at the bottom of the lower filter screen and communicated with the inside of the filter cylinder; the mesh aperture of the upper filter screen, the mesh aperture of the middle filter screen and the mesh aperture of the lower filter screen are reduced in sequence;
the lower storage drying device (4) is a collecting box which is integrally shaped like a frustum pyramid; the collecting box comprises a bottom surface and a side wall extending upwards along the outer edge of the bottom surface; the top of the collecting box is provided with an inlet, and the bottom surface of the collecting box is provided with an outlet; the discharge port of the filter cartridge is communicated with the outlet of the collecting box through the inlet of the collecting box; the side wall of the collecting box is a detachable side wall; a handle (7) is arranged on the inner wall of the collecting box; the inner wall of the collecting box is provided with geotextile (8);
a water absorbing layer is arranged between the geotextile (8) and the inner wall of the collecting box; a sealing cover (1) is arranged on a feed inlet of the filter cylinder; the bottom of the collecting box is provided with a base (9); the upper screening and curing device is provided with an internal thread (5) connected with the lower storage and drying device; the lower storage drying device (4) is provided with an external thread (6) connected with the upper screening and curing device; the upper screening and curing device is connected with the lower storage and drying device (4) through threads;
the lower filter screen is arranged on the upper surface of the vent hole close to the wall of the filter cylinder, the inferior arc bows at two ends of the lower filter screen close to the vent hole are subjected to compacting treatment, and the distances from the minor arc bowstrings to the arc top are both set to be 5-10 cm.
2. The river sludge rapid dewatering and solidifying device according to claim 1, wherein: the distance between upper portion filter screen and the feed inlet, the distance between upper portion filter screen and the middle part filter screen, the distance between middle part filter screen and the lower part filter screen and the distance between lower part filter screen and the discharge gate all are not less than 30 cm.
3. The river sludge rapid dewatering and solidifying device according to claim 2, characterized in that: the distance between the upper portion filter screen and the feed inlet is greater than the distance between the upper portion filter screen and the middle portion filter screen.
4. The river sludge rapid dewatering and solidifying device according to claim 1, 2 or 3, wherein: and reinforcing ribs are arranged at the positions, close to the ventilation holes (3), of the lower filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810708495.1A CN108793651B (en) | 2018-07-02 | 2018-07-02 | River silt rapid dehydration solidification equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810708495.1A CN108793651B (en) | 2018-07-02 | 2018-07-02 | River silt rapid dehydration solidification equipment |
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| Publication Number | Publication Date |
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| CN108793651A CN108793651A (en) | 2018-11-13 |
| CN108793651B true CN108793651B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810708495.1A Active CN108793651B (en) | 2018-07-02 | 2018-07-02 | River silt rapid dehydration solidification equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB201814201D0 (en) * | 2018-08-31 | 2018-10-17 | Forest Drainage Products Ltd | A dewatering unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080004141A (en) * | 2006-07-04 | 2008-01-09 | 주식회사 텍풀이엔씨 | The primary stage rainwater managemnt and high clean water potration system |
| CN104310727A (en) * | 2014-10-09 | 2015-01-28 | 常州大学 | Secondary sedimentation tank sludge treatment device |
| CN205412374U (en) * | 2015-12-18 | 2016-08-03 | 程丽丽 | Utilize device of computer processing mud |
| CN205773972U (en) * | 2016-05-17 | 2016-12-07 | 葛洲坝中固科技股份有限公司 | A kind of construction slurry dehydrating and curing device |
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2018
- 2018-07-02 CN CN201810708495.1A patent/CN108793651B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080004141A (en) * | 2006-07-04 | 2008-01-09 | 주식회사 텍풀이엔씨 | The primary stage rainwater managemnt and high clean water potration system |
| CN104310727A (en) * | 2014-10-09 | 2015-01-28 | 常州大学 | Secondary sedimentation tank sludge treatment device |
| CN205412374U (en) * | 2015-12-18 | 2016-08-03 | 程丽丽 | Utilize device of computer processing mud |
| CN205773972U (en) * | 2016-05-17 | 2016-12-07 | 葛洲坝中固科技股份有限公司 | A kind of construction slurry dehydrating and curing device |
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