CN110845110A - Vacuum preloading combined surcharge-loading sludge dewatering test device - Google Patents
Vacuum preloading combined surcharge-loading sludge dewatering test device Download PDFInfo
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- CN110845110A CN110845110A CN201911151277.3A CN201911151277A CN110845110A CN 110845110 A CN110845110 A CN 110845110A CN 201911151277 A CN201911151277 A CN 201911151277A CN 110845110 A CN110845110 A CN 110845110A
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- surcharge
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- 239000010802 sludge Substances 0.000 title claims abstract description 97
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000001125 extrusion Methods 0.000 claims abstract description 27
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 12
- 239000010865 sewage Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005370 electroosmosis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 208000005156 Dehydration Diseases 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Images
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a vacuum preloading and surcharge-loading combined sludge dewatering test device which comprises a sludge barrel, wherein the sludge barrel comprises a base, an extrusion cavity and a pressurizing device, the extrusion cavity is embedded into the base, and the extrusion cavity is detachably connected with the base; the external frame comprises a fixed seat, a lever and a weight, and the base is fixed at the top of the fixed seat; the weights are vertically arranged at one end of the outer side of the lever, and the other end of the lever is in transmission connection with the pressurizing device through a fixed rod; the water storage device is communicated with the sludge barrel through a conduit; and the water pumping device is communicated with the water storage device through a conduit. The invention effectively improves the efficiency of sludge dewatering by combining the vacuum preloading mode and the physical pressurizing mode.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to a vacuum preloading and surcharge combined sludge dewatering test device.
Background
Sewage treatment (sewage treatment, water treatment): in order to achieve the water quality requirement of sewage discharged into a certain water body or reused, the sewage is purified, and sludge is a substance generated in the sewage treatment process.
With the rapid development of economy and the continuous improvement of urbanization level in China, the sewage discharge amount is increasing day by day, and the sludge amount generated in the treatment process is increasing day by day. Improper treatment of sludge not only can encroach on a large amount of land, but also can cause serious secondary pollution to soil, underground water, surface water and ambient air. The sludge dewatering is the most important part in the sludge treatment, microorganisms and bacteria are difficult to grow after the sludge dewatering, the environmental pollution is less, the storage and the transportation are convenient, and the sludge after the high dewatering treatment can be used for producing chemical fertilizers after being mixed with certain organic biomass and fermented; or can be used for making bricks, producing cement and other building materials by replacing part of clay raw materials after incineration treatment.
At present, the sludge dewatering methods which are applied more frequently comprise a vacuum preloading method, a stacking method, an electroosmosis method and a filter pressing method, all adopted methods are single physical fields, energy consumption is high, efficiency is low, although the sludge dewatering by adopting multi-physical field coupling is a development trend, the technologies of vacuum combined electroosmosis, vacuum combined stacking and the like which are used by coupling the methods lack corresponding theoretical basis and support of test data at the present stage. The method mainly shows that the conventional method does not support a stable and mature technology for the combined idea of air pressure and physical pressurization, is mostly experimental combination, and cannot rapidly adjust the air pressure and the physical pressure.
Therefore, how to provide a vacuum preloading and surcharge sludge dewatering test device is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a vacuum preloading and surcharge loading combined sludge dewatering test device, which can effectively improve the sludge dewatering efficiency by combining the vacuum preloading and the physical pressurization.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vacuum preloading combined surcharge sludge dewatering test device comprises
The sludge barrel comprises a base, an extrusion cavity and a pressurizing device, wherein the extrusion cavity is embedded into the base and is detachably connected with the base;
the external frame comprises a fixed seat, a lever and a weight, and the base is fixed at the top of the fixed seat; the weight is vertically arranged at one end of the outer side of the lever, and the other end of the lever is in transmission connection with the pressurizing device through a fixed rod and is used for pressurizing sludge;
the water storage device is communicated with the sludge barrel through a conduit;
and the water pumping device is communicated with the water storage device through a conduit and is used for vacuum pressurization.
Preferably, in the above vacuum preloading and surcharge-loading combined sludge dewatering test device, the pressurizing device comprises a pressure rod, a movable cross beam, a fixed plate, a sludge barrel cover and a filter plate;
the outer edge of the fixing plate is provided with a plurality of threaded holes, the corresponding position of the base is also provided with a threaded hole, and the fixing plate is connected with the base through a fixing rod with threads at both ends to fix the extrusion cavity;
the pressure rod is vertically fixed at one end of the movable cross beam and is positioned right above the sludge barrel cover;
a threaded hole is formed in the other end of the movable cross beam, a round hole is formed in the corresponding position of the fixed plate, a threaded hole is formed in the corresponding position of the base, and a fixed rod with threads at two ends sequentially penetrates through the movable cross beam, the fixed plate and the base to realize the fixed connection of the movable cross beam and the base;
the sludge barrel cover is detachably connected with the fixed plate, and is provided with an air suction and drainage outlet and an air release port which are controlled by a valve; wherein, the outlet of bleeding is used for the evacuation drainage, the gas release mouth realizes the instantaneous pressure release in the bucket through control mud bucket internal gas pressure.
The filter plate is arranged at the bottom of the extrusion cavity and is connected with an air suction and water discharge port controlled by a valve, and the air suction and water discharge port is also used for vacuumizing and discharging water;
the air exhaust and water discharge port is communicated with the water storage device through a conduit.
Preferably, in the vacuum preloading and surcharge-loading combined sludge dewatering test device, the outer diameter of the sludge barrel cover is matched with the inner diameter of the extrusion cavity, and a sealing ring is arranged between the sludge barrel cover and the inner wall of the extrusion cavity.
Preferably, in the vacuum preloading and surcharge-combined sludge dewatering test device, a laser displacement meter is fixedly mounted at the bottom of the movable cross beam.
The beneficial effects of the above technical scheme are: the laser displacement meter can realize accurate measurement of the deformation displacement of the sludge cover.
Preferably, in the above sludge dewatering test device with vacuum preloading and surcharge loading combined, the external frame further includes an instrument table for placing the fixing seat.
Preferably, in the vacuum preloading and surcharge-combined sludge dewatering test device, the water storage device comprises a water storage cover body, a water storage cavity, a bottom plate, a negative pressure gauge and a control switch;
the water storage cavity is fixed on the bottom plate, the top of the water storage cavity is provided with the water storage cover body, and the negative pressure meter and the control switch are fixedly connected with the water storage cover body;
the outer edge of the water storage cover body is provided with a plurality of threaded holes, the corresponding position of the bottom plate is also provided with threaded holes, and the water storage cover body is connected with the bottom plate through fixing rods with threads at both ends to fix the water storage cavity.
Preferably, in the above sludge dewatering test device with vacuum preloading combined surcharge, the bottom end of the water storage cavity is provided with a water outlet controlled by a valve, one side of the water storage cavity close to the top end is provided with a water inlet, and the water inlet is communicated with the air exhaust outlet through a conduit.
Preferably, in the above vacuum preloading and surcharge-loading combined sludge dewatering test device, the water pumping device is a vacuum pump, and the vacuum pump is connected with the control switch through a conduit.
Preferably, in the above vacuum preloading and surcharge sludge dewatering test device, the sludge barrel is cylindrical.
Preferably, in the above-mentioned sludge dewatering test device with vacuum preloading and surcharge loading, the filter plates are filled with filter fabrics, wherein the filter fabrics are 300g/m2The geotextile.
According to the technical scheme, compared with the prior art, the invention discloses and provides the vacuum preloading and surcharge combined sludge dewatering test device, the purpose of dewatering sludge under the combined action of vacuum pressure and physical pressure is realized, high-efficiency sludge dewatering efficiency is achieved, and meanwhile, a powerful support is provided for the lack of corresponding theoretical basis and test data for coupling treatment of sewage by various methods in the current stage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a sludge barrel according to the present invention;
FIG. 3 is a schematic view of the outer frame of the present invention;
FIG. 4 is a schematic view of a water storage apparatus according to the present invention;
fig. 5 is a partial structural schematic diagram of the outer frame of the present invention.
In the figure:
1 is a sludge bucket, 10 is a laser displacement meter, 11 is a base, 12 is an extrusion cavity, 13 is a pressure rod, 14 is a movable beam, 15 is a fixed plate, 16 is a sludge bucket cover, 17 is a filter plate, 18 is an air suction and drainage port, 181 is a valve, 182-position ball valves, 19 is an air relief port, 191 is an air relief valve, 2 is an external frame, 21 is a fixed seat, 22 is a lever, 23 is a weight, 24 is an instrument table, 25 is a lever leveling device, 26 is a middle rotating wheel, 3 is a water storage device, 31 is a water storage cover body, 32 is a water storage cavity, 33 is a bottom plate, 34 is a negative pressure meter, 35 is a control switch, 36 is a water outlet, 361 is a water outlet switch, 37 is a water inlet, 4 is a water pumping device, 5 is a fixed rod, 6 is a guide pipe, and.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a vacuum preloading and surcharge loading combined sludge dewatering test device, which comprises
The sludge barrel comprises a base 11, an extrusion cavity 12 and a pressurizing device, wherein the extrusion cavity 12 is embedded into the base 11, and the extrusion cavity 12 is detachably connected with the base 11;
the external frame 2, the external frame 2 includes the fixed seat 21, lever 22 and weight 23, the base 11 is fixed in the neck on the top of the fixed seat 21; the weight 23 is vertically arranged at one end of the outer side of the lever 22, the other end of the lever 22 is in transmission connection with the pressurizing device through the fixing rod 5 and is used for pressurizing sludge in the sludge barrel, meanwhile, the pressure reading can be obtained through direct conversion of the mass of the weight, and before dehydration treatment, the influence of pressure-releasing pretreatment on the sludge can be explored through the pressure-releasing on the weight 23;
the water storage device 3 is communicated with the sludge barrel 1 through a conduit 6;
and a water pumping device 4, wherein the water pumping device 4 is communicated with the water storage device 3 through a conduit 6 and is used for vacuum pressurization.
In order to further optimize the technical scheme, the pressurizing device comprises a pressure rod 13, a movable cross beam 14, a fixing plate 15, a sludge barrel cover 16 and a filter plate 17;
the outer edge of the fixing plate 15 is provided with a plurality of threaded holes, the corresponding position of the base 11 is also provided with a threaded hole, and the fixing plate 15 is connected with the base 11 through a fixing rod 5 with threads at both ends to fix the extrusion cavity 12;
the pressure rod 13 is vertically fixed at one end of the movable cross beam 14, and the pressure rod 13 is positioned right above the sludge barrel cover 16;
the other end of the movable beam 14 is provided with a threaded hole, a round hole is formed in the corresponding position of the fixed plate 15, a threaded hole is formed in the corresponding position of the base 11, and the fixed rod 5 with threads at both ends sequentially penetrates through the movable beam 14, the fixed plate 15 and the base 11 to realize the fixed connection of the movable beam 14 and the base 11; the movable beam 14 moves up and down on the fixed rod 5 by screws, and the movable beam 14 is fixed at any position on the fixed rod 5.
The sludge barrel cover 16 is detachably connected with the fixing plate 15, and the sludge barrel cover 16 is provided with an air suction and drainage port 18 and an air release port 19 which are controlled by a valve;
the filter plate 17 is arranged at the bottom of the extrusion chamber 12, and the filter plate 17 is connected with an air suction and water discharge port 18 controlled by a valve;
the two air suction and water discharge ports 18 are communicated with the water storage device 3 through the guide pipe 6, the air suction and water discharge ports 18 arranged on the sludge barrel cover 16 are controlled through the valve 181, and the sludge water discharge channel can be opened through air flow by blowing the air suction and water discharge ports 18;
the suction and discharge port 18 provided at the filter plate 17 is controlled by a ball valve 182, and the purge port 19 is controlled by a purge valve 191.
In order to further optimize the technical scheme, the outer diameter of the sludge barrel cover 16 is matched with the inner diameter of the extrusion cavity 12, and a sealing ring is arranged between the sludge barrel cover 16 and the inner wall of the extrusion cavity 12.
In order to further optimize the technical scheme, the laser displacement meter 10 is fixedly arranged at the bottom of the movable beam 14.
In order to further optimize the above solution, the external frame 2 further comprises an instrument table 24 for placing the fixing base 21.
In order to further optimize the technical scheme, the water storage device 3 comprises a water storage cover body 31, a water storage cavity 32, a bottom plate 33, a negative pressure meter 34 and a control switch 35;
the water storage cavity 32 is fixed on the bottom plate 33, the top of the water storage cavity 32 is provided with a water storage cover 31, the negative pressure gauge 34 and the control switch 35 are fixedly connected with the water storage cover 31, and the vacuum degree in the extrusion cavity 12 can be known through the numerical value of the negative pressure gauge 34;
the outer edge of the water storage cover body 31 is provided with a plurality of threaded holes, the corresponding position of the bottom plate 33 is also provided with a threaded hole, and the water storage cover body 31 is connected with the bottom plate 33 through a fixing rod 5 with threads at both ends, so that the water storage cavity 32 is fixed.
In order to further optimize the technical scheme, the bottom end of the water storage cavity 32 is provided with a water outlet 36 controlled by a water outlet switch 361, one side, close to the top end, of the water storage cavity 32 is provided with a water inlet 37, the water inlet 37 is communicated with the air suction and water discharge port 18 through a guide pipe 6, the quality of moisture removed from the sludge can be accurately weighed by arranging the water storage device 3, the moisture content of the sludge in the sludge barrel can be obtained through calculation, and the moisture content condition of the sludge can be monitored in real time.
In order to further optimize the technical scheme, the water pumping device 4 is a vacuum pump, the vacuum pump is connected with the control switch 35 through the conduit 6, and the moisture in the extrusion cavity 12 is extracted by starting the vacuum pump. .
In order to further optimize the above technical solution, the sludge barrel 1 is cylindrical.
In order to further optimize the above technical solution, the filter plate 17 is filled with filter fabric.
According to the invention, sludge is added into the sludge barrel 1, after the sludge barrel is sealed, the vacuum pump 4 of the water pumping device is started to enable water in the sludge barrel 1 to enter the water storage cavity 32, meanwhile, the weight 23 is used for pressurizing, the pressure is transmitted to the sludge barrel cover 16 through the lever 22, and the lever 22 is used for carrying out horizontal adjustment through the lever leveling device 25. Specifically, as the lever is lifted up and down, the middle rotating wheel 26 rotates clockwise and anticlockwise, so that the fixing rod moves up and down to transmit pressure to the sludge barrel cover. The sludge barrel cover 16 extrudes the sludge in the extrusion cavity 12 downwards to enable water to enter the water storage device 3, meanwhile, the load of the upper part of the sludge can be accurately controlled, and the sludge in the sludge barrel 1 is dehydrated under the combined action of vacuum pressure and physical pressure. The water content of the sludge with the original water content of more than 95 percent is reduced to 87.58 percent after the sludge is treated by the device, and the specific experimental data are shown in table 1.
TABLE 1
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A vacuum preloading combined surcharge sludge dewatering test device is characterized by comprising
The sludge bucket (1) comprises a base (11), an extrusion cavity (12) and a pressurizing device, wherein the extrusion cavity (12) is embedded into the base (11), and the extrusion cavity (12) is detachably connected with the base (11);
the external frame (2), the external frame (2) includes a fixed seat (21), a lever (22) and a weight (23), and the base (11) is fixed on the top of the fixed seat (21); the weight (23) is vertically arranged at one end of the outer side of the lever (22), and the other end of the lever (22) is in transmission connection with the pressurizing device through a fixing rod (5);
the water storage device (3) is communicated with the sludge barrel (1) through a conduit (6);
and the water pumping device (4), the water pumping device (4) is communicated with the water storage device (3) through a conduit (6).
2. The vacuum preloading and surcharge sludge dewatering test device according to claim 1, wherein the pressurizing device comprises a pressure rod (13), a movable beam (14), a fixed plate (15), a sludge barrel cover (16) and a filter plate (17);
the outer edge of the fixing plate (15) is provided with a plurality of threaded holes, the corresponding position of the base (11) is also provided with a threaded hole, and the fixing plate (15) is connected with the base (11) through a fixing rod (5) with threads at both ends to fix the extrusion cavity (12);
the pressure rod (13) is vertically fixed at one end of the movable cross beam (14), and the pressure rod (13) is positioned right above the sludge barrel cover (16);
a threaded hole is formed in the other end of the movable cross beam (14), a round hole is formed in the corresponding position of the fixed plate (15), a threaded hole is formed in the corresponding position of the base (11), and a fixed rod (5) with threads at two ends sequentially penetrates through the movable cross beam (14), the fixed plate (15) and the base (11) to realize the fixed connection of the movable cross beam (14) and the base (11);
the sludge barrel cover (16) is detachably connected with the fixing plate (15), and the sludge barrel cover (16) is provided with an air suction and drainage outlet (18) and an air release port (19) which are controlled by a valve;
the filter plate (17) is arranged at the bottom of the extrusion cavity (12), and the filter plate (17) is connected with an air suction and water discharge port (18) controlled by a valve;
the air extraction and water discharge port (18) is communicated with the water storage device (3) through a conduit (6).
3. The vacuum preloading and surcharge loading combined sludge dewatering test device according to claim 2, wherein the outer diameter of the sludge barrel cover (16) is matched with the inner diameter of the extrusion cavity (12), and a sealing ring (7) is arranged between the sludge barrel cover (16) and the inner wall of the extrusion cavity (12).
4. The vacuum preloading and surcharge sludge dewatering test device according to claim 2, wherein the laser displacement meter (10) is fixedly arranged at the bottom of the movable beam (14).
5. The vacuum preloading combined surcharge sludge dewatering test device according to claim 1, wherein the outer frame (2) further comprises an instrument table (24) for placing the fixing seat (21).
6. The vacuum preloading combined surcharge sludge dewatering test device according to claim 1, wherein the water storage device (3) comprises a water storage cover body (31), a water storage cavity (32), a bottom plate (33), a negative pressure meter (34) and a control switch (35);
the water storage cavity (32) is fixed on the bottom plate (33), the top of the water storage cavity (32) is provided with the water storage cover body (31), and the negative pressure meter (34) and the control switch (35) are fixedly connected with the water storage cover body (31);
the water storage cover body (31) is provided with a plurality of threaded holes in the outer edge, threaded holes are also formed in the corresponding positions of the bottom plate (33), and the water storage cover body (31) is connected with the bottom plate (33) through fixing rods (5) with threads at two ends to fix the water storage cavity (32).
7. The vacuum preloading combined surcharge sludge dewatering test device according to claim 6, wherein a water outlet (36) controlled by a valve is arranged at the bottom end of the water storage cavity (32), a water inlet (37) is arranged at one side of the water storage cavity (32) close to the top end, and the water inlet (37) is communicated with the air suction and water discharge port (18) through a conduit (6).
8. The vacuum preloading combined surcharge sludge dewatering test device according to claim 6, wherein the water pumping device (4) is a vacuum pump, and the vacuum pump is connected with the control switch (35) through a conduit (6).
9. The vacuum preloading and surcharge sludge dewatering test device according to claim 1, wherein the sludge barrel (1) is cylindrical.
10. The vacuum preloading combined surcharge sludge dewatering test device according to claim 2, wherein the filter plates (17) are filled with filter fabrics.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151277.3A CN110845110A (en) | 2019-11-21 | 2019-11-21 | Vacuum preloading combined surcharge-loading sludge dewatering test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911151277.3A CN110845110A (en) | 2019-11-21 | 2019-11-21 | Vacuum preloading combined surcharge-loading sludge dewatering test device |
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| CN101105433A (en) * | 2007-07-26 | 2008-01-16 | 河海大学 | Portable on-spot and indoor dual-purpose direct-cutting experiment instrument and its sampling method |
| CN101430316A (en) * | 2008-12-15 | 2009-05-13 | 浙江大学 | Electroosmosis-load combined consolidometer |
| CN202246364U (en) * | 2011-09-26 | 2012-05-30 | 凯天环保科技股份有限公司 | Sludge dewatering equipment |
| CN108101341A (en) * | 2018-01-12 | 2018-06-01 | 武汉大学 | High speed dewatering of slurries device |
| CN211688760U (en) * | 2019-11-21 | 2020-10-16 | 山东科技大学 | Vacuum preloading combined surcharge-loading sludge dewatering test device |
-
2019
- 2019-11-21 CN CN201911151277.3A patent/CN110845110A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105433A (en) * | 2007-07-26 | 2008-01-16 | 河海大学 | Portable on-spot and indoor dual-purpose direct-cutting experiment instrument and its sampling method |
| CN101430316A (en) * | 2008-12-15 | 2009-05-13 | 浙江大学 | Electroosmosis-load combined consolidometer |
| CN202246364U (en) * | 2011-09-26 | 2012-05-30 | 凯天环保科技股份有限公司 | Sludge dewatering equipment |
| CN108101341A (en) * | 2018-01-12 | 2018-06-01 | 武汉大学 | High speed dewatering of slurries device |
| CN211688760U (en) * | 2019-11-21 | 2020-10-16 | 山东科技大学 | Vacuum preloading combined surcharge-loading sludge dewatering test device |
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