CN108457265B - PVA drainage system for rapid drainage of sludge storage yard and use method thereof - Google Patents
PVA drainage system for rapid drainage of sludge storage yard and use method thereof Download PDFInfo
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- CN108457265B CN108457265B CN201810097226.6A CN201810097226A CN108457265B CN 108457265 B CN108457265 B CN 108457265B CN 201810097226 A CN201810097226 A CN 201810097226A CN 108457265 B CN108457265 B CN 108457265B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a PVA drainage system for quickly draining water in a sludge storage yard and a use method thereof. The drainage system consists of a hollow main pipe, a double-layer water absorption pad, a fixing pin and a vacuum pump joint. The drainage system is used for rapid drainage engineering of a high-water-content sludge storage yard, is laid inside the storage yard, utilizes the capillary water absorption effect of the drainage system, rapidly discharges water in sludge, collects the water in a main pipeline, and pumps the water out through a vacuum pump. The drainage system and the use method thereof can avoid the clogging problem of a drainage body in the conventional vacuum drainage engineering, can enable the drainage process to go down, simultaneously utilize the capillary action of the drainage system to absorb and drain water, only need to intermittently start the vacuum pump, save a large amount of energy consumption, have the effect of green and energy saving, and the PVA material belongs to a degradable material, does not need to be dismantled after the drainage construction is finished, is automatically degraded in the soil body, and has less influence on the environment.
Description
Technical Field
The invention relates to a rapid drainage PVA drainage system for a sludge storage yard and a use method thereof, wherein the rapid drainage system is used in drainage consolidation engineering of a high-water-content dredged sludge storage yard, particularly under the working condition of high content of fine particles of sludge, the excellent capillary water absorption characteristic of a PVA material is utilized, the water in the sludge is absorbed into a drainage body by utilizing the self suction force, and the water in the drainage body is pumped out by an external vacuum pump. Meanwhile, the drainage body mainly absorbs moisture by using capillary suction, and an external vacuum pump is not required to be started all the time and is only required to be started intermittently, so that a large amount of electric energy is saved, and the drainage body is green and environment-friendly. Belongs to the technical fields of geotechnical reinforcement engineering, rapid drainage engineering and the like.
Background
In the dredging engineering of the high-water-content sludge source and inland rivers, lakes and channels, farmlands beside river channels are generally piled up and occupy a large number of fertile farmlands, and meanwhile, the dredged sludge contains a large number of fine particles and water, so that direct cultivation cannot be realized, and the water cannot be quickly discharged under natural conditions, therefore, the water in the sludge yard is quickly reduced by adopting a manual intervention method, and the occupied farmlands can be recovered for use in a short time. In the manual quick drainage engineering, the vacuum negative pressure is a common mode for pumping out water, but the conventional filtering drainage body pre-embedded in the yard is usually blocked by fine particles under high negative pressure to block a filtering channel, so that the whole drainage process is stopped, and therefore, in the drainage engineering of the sludge yard, the selection of a proper drainage body material and a proper drainage body form become the key for solving the problem. The invention adopts PVA material (polyvinyl alcohol sponge) as the main material of the drainage body, absorbs water from the contact sludge by utilizing the strong capillary action of the PVA material, reduces the strength and the nonuniformity of the vacuum water absorption action, ensures that the water in the sludge is absorbed into the PVA material and gradually collected into a hollow PVA pipe, and then intermittently starts a vacuum pump to pump out the water enriched in the main pipeline. The problem of clogging of the drainage body is solved on the one hand, and on the other hand, the electric energy is saved, and meanwhile, the PVA material is also a degradable high polymer material, and the influence on the environment is small.
Disclosure of Invention
The invention provides a PVA drainage system for rapid drainage of a sludge storage yard and a use method thereof. The drainage method of the drainage body only needs to intermittently start the vacuum pump, saves a large amount of electric energy, and is green and environment-friendly. The invention can fundamentally solve the clogging problem of the conventional drainage body in the sludge with higher content of fine particles, so that the drainage process can be continued, and the bottleneck problem is solved.
Solution of the invention
The invention provides a PVA drainage system for quickly draining water in a sludge storage yard and a use method thereof. Its overall structure comprises 4 parts: 1) a hollow main pipe, 2) a double-layer water absorption pad, 3) a fixing pin and 4) a vacuum pump joint.
The water-absorbing and water-draining device comprises a hollow main pipe, a double-layer water-absorbing pad, a vacuum pump connector, a vacuum pump, a water-absorbing pipe and a water-draining pipe, wherein 1) the hollow main pipe is a hollow circular pipe integrally formed by PVA materials, longitudinal and transverse main channels of the water-draining system can be formed by lapping warp and weft, the hollow main pipe is contacted with the double-layer water-absorbing pad, water in the double-layer water-absorbing;
wherein 2) the double-layer water absorption pad is a mattress type water absorption material made of PVA material, the upper layer and the lower layer are wrapped by the hollow main pipe and fixed with the hollow main pipe through the fixing pin, and the double-layer water absorption pad is directly contacted with the high-water-content sludge and absorbs water from the sludge through capillary action;
wherein 3) the fixing pin is a barbed pin made of hard plastics, is arranged along the edge of the hollow main pipe, penetrates through the double-layer water absorption pad from top to bottom, and fixes the double-layer water absorption pad and the hollow main pipe together;
wherein 4) the vacuum pump connects and is the double-deck metal tubbiness sleeve pipe, and one end opening end is sealed, and the vacuum pump connects the internal diameter unanimous with the interior pipe diameter of hollow main pipe, and the vacuum pump connects the cover at hollow main pipe end, and the inner tube has the screw thread, can connect the pipeline of external vacuum pump.
The use method of the rapid drainage PVA drainage system for the sludge storage yard comprises the following steps:
1) designing the density of the hollow main pipes arranged in the drainage system according to the size of the sludge storage yard, overlapping the longitudinal and transverse hollow main pipes, laying double-layer water absorption pads up and down, arranging fixing pins along the outline of the hollow main pipes, penetrating the double-layer water absorption pads to fix the hollow main pipes and the double-layer water absorption pads together, and sleeving vacuum pump joints on the two ends of the hollow main pipes;
2) firstly filling sludge with a certain height in a sludge storage yard, putting the assembled drainage system, paying attention to the fact that the reserved vacuum pump pipeline is not covered by the sludge, and then continuously filling the residual sludge at the top of the drainage system;
3) and connecting the reserved vacuum pipeline with an external vacuum pump, starting the vacuum pump, pumping out moisture, closing the vacuum pump after the water outlet speed is slowed down, intermittently starting and closing the vacuum pump according to the change of the water outlet amount, and gradually finishing the drainage of the sludge.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention aims to provide a rapid drainage PVA drainage system for a sludge storage yard and a use method thereof. The drainage body is paved in the sludge storage yard in advance, the water in the sludge is discharged by utilizing the capillary action of the PVA material, and the drainage method of the drainage body only needs to intermittently start the vacuum pump, so that a large amount of electric energy is saved, and the drainage body is green and environment-friendly. The invention adopts PVA material (polyvinyl alcohol sponge) as the main material of the drainage body, absorbs water from the contact sludge by utilizing the strong capillary action of the PVA material, reduces the strength and the nonuniformity of the vacuum water absorption action, ensures that the water in the sludge is absorbed into the PVA material and gradually collected into a hollow PVA pipe, and then intermittently starts a vacuum pump to pump out the water enriched in the main pipeline. The problem of clogging of the drainage body is solved on the one hand, and on the other hand, the electric energy is saved, and meanwhile, the PVA material is also a degradable high polymer material, and the influence on the environment is small.
Drawings
FIG. 1 is a schematic view of the whole
FIG. 2 is a schematic view of a fixing pin
FIG. 3 is a schematic view of a vacuum pump joint
In the figure: 1) a hollow main pipe, 2) a double-layer water absorption pad, 3) a fixing pin and 4) a vacuum pump joint.
The specific implementation mode is as follows:
a PVA drainage system for quickly draining water in a sludge storage yard has an integral structure comprising 4 parts: the water-absorbing device comprises a hollow main pipe, a double-layer water-absorbing pad, a fixing pin and a vacuum pump joint.
The hollow main pipe 1) in the structure is a hollow circular pipe integrally formed by PVA materials, longitudinal and transverse main channels of a drainage system can be formed by lapping warp and weft, the hollow main pipe 1) is in contact with the double-layer water absorption pad 2) to absorb water in the double-layer water absorption pad 2) into the hollow main pipe 1), and the two ends of the hollow main pipe 1) are connected with a vacuum pump connector 4) to provide vacuum suction through a vacuum pump so as to discharge the water in the hollow main pipe 1);
the double-layer water absorption pad 2) in the structure is a mattress type water absorption material made of PVA material, the upper layer and the lower layer are wrapped by the hollow main pipe 1) and fixed with the hollow main pipe 1) through the fixing pin 3), and the double-layer water absorption pad 2) is directly contacted with the high-water-content sludge and absorbs water from the sludge through capillary action;
the fixing pin 3) in the structure is a barbed pin made of hard plastics, is arranged along the edge of the hollow main pipe 1), penetrates through the double-layer water absorption pad 2 from top to bottom, and fixes the double-layer water absorption pad 2) and the hollow main pipe 1) together;
the vacuum pump joint 4) in the structure is a double-layer metal barrel-shaped sleeve, one end of the sleeve is opened, the other end of the sleeve is closed, the inner diameter of the vacuum pump joint 4) is consistent with that of the hollow main pipe 1), the vacuum pump joint 4) is sleeved at the end of the hollow main pipe 1), and the inner cylinder is provided with threads and can be connected with a pipeline of an external vacuum pump.
The use method of the rapid drainage PVA drainage system for the sludge storage yard comprises the following steps:
1) designing the density of a hollow main pipe 1) arranged in a drainage system according to the size of a sludge storage yard, overlapping the longitudinal and transverse hollow main pipes 1), laying a double-layer water absorption pad 2) up and down, arranging a fixing pin 3) along the outline of the hollow main pipe 1), puncturing the double-layer water absorption pad 2), fixing the hollow main pipe 1) and the double-layer water absorption pad 2) together, and sleeving vacuum pump connectors 4 on two ends of the hollow main pipe 1);
2) firstly filling sludge with a certain height in a sludge storage yard, putting the assembled drainage system, paying attention to the fact that the reserved vacuum pump pipeline is not covered by the sludge, and then continuously filling the residual sludge at the top of the drainage system;
3) and connecting the reserved vacuum pipeline with an external vacuum pump, starting the vacuum pump, pumping out moisture, closing the vacuum pump after the water outlet speed is slowed down, intermittently starting and closing the vacuum pump according to the change of the water outlet amount, and gradually finishing the drainage of the sludge.
Claims (2)
1. A PVA drainage system for quickly draining water in a sludge storage yard has an integral structure comprising 4 parts: 1) hollow person in charge, 2) double-deck pad that absorbs water, 3) fixing pin, 4) vacuum pump joint, characterized by:
1) the hollow main pipe is a hollow circular pipe integrally formed by PVA materials, longitudinal and transverse main channels of the drainage system can be formed by lapping longitude and latitude, the hollow main pipe is in contact with the double-layer water absorption pad, water in the double-layer water absorption pad is absorbed into the hollow main pipe, two ends of the hollow main pipe are connected with vacuum pump connectors, and the vacuum pump provides vacuum suction force to discharge the water in the hollow main pipe;
2) the double-layer water absorption pad is a mattress type water absorption material made of PVA material, the upper layer and the lower layer are wrapped by the hollow main pipe and fixed with the hollow main pipe through the fixing pin, and the double-layer water absorption pad is directly contacted with the high-water-content sludge and absorbs water from the sludge through capillary action;
3) the fixing pin is a barbed pin made of hard plastics, is arranged along the edge of the hollow main pipe, penetrates through the double-layer water absorption pad from top to bottom, and fixes the double-layer water absorption pad and the hollow main pipe together;
4) the vacuum pump joint is a double-layer metal barrel-shaped sleeve, one end of the vacuum pump joint is open, the other end of the vacuum pump joint is closed, the inner diameter of the vacuum pump joint is consistent with that of the inner pipe of the hollow main pipe, the vacuum pump joint is sleeved at the end of the hollow main pipe, and the inner pipe is threaded and can be connected with a pipeline externally connected with a vacuum pump.
2. The use method of the rapid drainage PVA drainage system for the sludge storage yard according to claim 1 comprises the following steps:
1) designing the density of the hollow main pipes arranged in the drainage system according to the size of the sludge storage yard, overlapping the longitudinal and transverse hollow main pipes, laying double-layer water absorption pads up and down, arranging fixing pins along the outline of the hollow main pipes, penetrating the double-layer water absorption pads to fix the hollow main pipes and the double-layer water absorption pads together, and sleeving vacuum pump joints on the two ends of the hollow main pipes;
2) firstly filling sludge with a certain height in a sludge storage yard, putting the assembled drainage system, paying attention to the fact that the reserved vacuum pump pipeline is not covered by the sludge, and then continuously filling the residual sludge at the top of the drainage system;
3) and connecting the reserved vacuum pipeline with an external vacuum pump, starting the vacuum pump, pumping out moisture, closing the vacuum pump after the water outlet speed is slowed down, intermittently starting and closing the vacuum pump according to the change of the water outlet amount, and gradually finishing the drainage of the sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810097226.6A CN108457265B (en) | 2018-01-31 | 2018-01-31 | PVA drainage system for rapid drainage of sludge storage yard and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810097226.6A CN108457265B (en) | 2018-01-31 | 2018-01-31 | PVA drainage system for rapid drainage of sludge storage yard and use method thereof |
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| CN108457265A CN108457265A (en) | 2018-08-28 |
| CN108457265B true CN108457265B (en) | 2020-09-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110747963A (en) * | 2019-11-22 | 2020-02-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Seepage-preventing membrane upward seepage-guiding system suitable for phosphogypsum storage yard |
| CN112136725B (en) * | 2020-08-28 | 2022-07-05 | 盐城工学院 | Method for treating fluid mud by biological combined vacuum preloading |
| CN115140913B (en) * | 2022-08-01 | 2024-05-07 | 江苏省农业科学院 | In-situ dewatering system for sludge storage yard |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056852A (en) * | 2002-05-30 | 2002-07-10 | 이정우 | Embankment construction method with poor quality fill material and insitu soils |
| CN101560762A (en) * | 2009-05-13 | 2009-10-21 | 天津城市建设学院 | Vacuum prepressing improved technical method |
| CN103243704A (en) * | 2013-05-02 | 2013-08-14 | 浙江大学舟山海洋研究中心 | Shallow mud foundation treatment method |
| CN104727296A (en) * | 2013-12-20 | 2015-06-24 | 邓立新 | Self-suction drain pipe |
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- 2018-01-31 CN CN201810097226.6A patent/CN108457265B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056852A (en) * | 2002-05-30 | 2002-07-10 | 이정우 | Embankment construction method with poor quality fill material and insitu soils |
| CN101560762A (en) * | 2009-05-13 | 2009-10-21 | 天津城市建设学院 | Vacuum prepressing improved technical method |
| CN103243704A (en) * | 2013-05-02 | 2013-08-14 | 浙江大学舟山海洋研究中心 | Shallow mud foundation treatment method |
| CN104727296A (en) * | 2013-12-20 | 2015-06-24 | 邓立新 | Self-suction drain pipe |
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