CN202471543U - Sludge specific resistance measuring device - Google Patents
Sludge specific resistance measuring device Download PDFInfo
- Publication number
- CN202471543U CN202471543U CN2012200134924U CN201220013492U CN202471543U CN 202471543 U CN202471543 U CN 202471543U CN 2012200134924 U CN2012200134924 U CN 2012200134924U CN 201220013492 U CN201220013492 U CN 201220013492U CN 202471543 U CN202471543 U CN 202471543U
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- Prior art keywords
- sludge
- buchner funnel
- filter paper
- pipe
- cup
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- 239000010802 sludge Substances 0.000 title claims abstract description 68
- 238000005259 measurement Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 18
- 239000000706 filtrate Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
The utility model discloses a sludge specific resistance measuring device and belongs to the field of measuring devices. The sludge specific resistance measuring device comprises a Buchner funnel, a metering system, a connecting pipe, a pressure buffer tank, an oil-free vacuum pump, a vacuum meter and a fixed support, wherein the Buchner funnel consists of a sludge cup, a Buchner funnel base, filter paper and a filter paper fixing ring. The sludge specific resistance measuring device has the advantages of simple structure, simplicity in operation, convenience for filter paper change, definite principle and accurate measurement, and can meet the needs regarding sludge specific resistance measurement.
Description
Technical Field
The utility model relates to a measuring device especially relates to a mud specific resistance measuring device.
Background
In the course of Water treatment Experimental technology in colleges and universities, sewage treatment plants and related research institutions, a sludge specific resistance measuring device is required. Most of the existing sludge specific resistance measuring devices have the defects that filter paper stacking operation is complex, pressure is unstable, air leakage is easy to occur on a contact plane of a Buchner funnel and the filter paper, and mutual influence among filter cylinders of a multi-connected measuring device exists.
Disclosure of Invention
Based on the shortcoming that above-mentioned prior art exists, the embodiment of the utility model provides a structure is succinct, easy operation, be convenient for change filter paper and measure accurate mud specific resistance measuring device.
The utility model aims at realizing through the following technical scheme:
the embodiment of the utility model provides a mud specific resistance measuring device, include:
buchner funnel, measurement system, connecting pipe, pressure buffer tank, do not have oily vacuum pump, vacuum gauge and fixed bolster, buchner funnel, measurement system, pressure buffer tank and vacuum gauge all set up on the fixed bolster, buchner funnel in proper order with measurement system, pressure buffer tank, connecting pipe and do not have oily vacuum pump connection, the vacuum gauge sets up on pressure buffer tank, its characterized in that, buchner funnel includes:
the device comprises a Buchner funnel base, a sludge cup, a filter paper fixing ring and filter paper; wherein,
the upper end of the Buchner funnel base is provided with a sludge cup bayonet, and the lower end of the Buchner funnel base is provided with a liquid outlet;
a clamping part is arranged outside the cup body at the bottom of the sludge cup and clamped on a sludge cup bayonet of the Buchner funnel base through the clamping part;
the bottom of the wall of the sludge cup is provided with a clamping hole, the filter paper fixing ring is provided with a support corresponding to the clamping hole, and the filter paper fixing ring can be clamped and fixed at the bottom of the wall of the sludge cup through the support;
the filter paper is arranged at the bottom of the wall of the sludge cup through the filter paper fixing ring.
In the device, the filter paper fixing ring is of an annular structure, and the support is vertically arranged on the annular body.
In the device, a plurality of clamping holes which are uniformly distributed are formed in the bottom of the wall of the sludge cup, and a plurality of supports corresponding to the clamping holes are arranged on the filter paper fixing ring.
In the above apparatus, the buchner funnel further comprises:
a Buchner funnel orifice plate and an annular sealing ring;
buchner funnel orifice plate sets up in the buchner funnel base, set up mud cup bottom below, buchner funnel orifice plate with set up between the mud cup bottom annular seal ring.
In the above apparatus, the metering system comprises: the annular water distribution frame, the air exhaust pipe, the emptying pipe and the metering pipe; wherein,
the annular water distribution frame is arranged in the metering pipe, and a water inlet connected with a Buchner funnel is formed in the annular water distribution frame;
the air exhaust pipe and the air release pipe are connected to the metering pipe.
In the device, the inner diameter of the measuring pipe is 30-60 mm.
In the device, the air exhaust pipe is connected to the metering pipe above the annular water distribution frame;
the emptying pipe is provided with an emptying valve, and the emptying pipe is connected to the lower part of the metering pipe and is a U-shaped pipe.
In the above apparatus, the buchner funnel and the metering system are connected by a union or a collar.
In the device, the oil-free vacuum pump is arranged outside the fixed support, and the oil-free vacuum pump and the fixed support are separately arranged; and a spring shock absorber is arranged below the fixed support.
The above-mentioned device still includes: the filter paper cutter is a metal cylinder, the upper end of the filter paper cutter is closed, and the lower end of the filter paper cutter is an annular knife edge.
Can find out by the technical scheme that provides above-mentioned, the utility model discloses mud is than hindering measuring device because each part of buchner funnel is the formula structure that clamps of components of a whole that can function independently, the structure is succinct, easy operation, be convenient for change filter paper and measure accurately.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a sludge specific resistance measuring device provided by an embodiment of the present invention;
FIG. 2 is a schematic view of placing a sludge cup and filter paper according to an embodiment of the present invention;
FIG. 3 is a schematic view of a filter paper fixing ring according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a buchner funnel base according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a fixing lug groove of a buchner funnel base according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a buchner funnel hole plate structure provided in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a metering system according to an embodiment of the present invention;
FIG. 8 is a schematic view of a filter paper cutter according to an embodiment of the present invention;
fig. 9 is a schematic bottom view of a filter paper cutter according to an embodiment of the present invention;
the reference numbers in the figures are: 1-sludge cup; 2-Buchner funnel base; 3-Buchner funnel; 4-a metering system; 5-adjusting the valve; 6-vacuum meter; 7-a pressure buffer tank; 8-fixing a bracket; 9-connecting pipe; 10-oil-free vacuum pump; 11-filter paper fixing ring; 12-filter paper; 13-fixing the ear; 14-ring seal ring; 15-fixing ear slots; 16-air holes; 17-spring damper; 18-an extraction tube; 19-annular water distribution frame; 20-a metering tube; 21-an emptying pipe; 22-evacuation valve; 23-a loose joint; 24-a valve; 25-buchner funnel well plate; 26-Filter paper cutter.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The embodiment of the utility model provides a mud specific resistance measuring device, as shown in figure 1, the device includes: the device comprises a Buchner funnel 3, a metering system 4, a connecting pipe, a pressure buffer tank, an oil-free vacuum pump, a vacuum gauge and a fixed support, wherein the Buchner funnel 3, the metering system 4, the pressure buffer tank 7 and the vacuum gauge 6 are all arranged on the fixed support 8, the Buchner funnel 3 is sequentially connected with the metering system 4, the pressure buffer tank 7, the connecting pipe 9 and the oil-free vacuum pump 10, the vacuum gauge 6 is arranged on the pressure buffer tank 7, and the pressure buffer tank 7 is also provided with an adjusting valve 5; a valve 24 is arranged on a pipeline connected between the metering system 4 and the pressure buffer tank 7;
the buchner funnel is of a split structure, as shown in fig. 2-6, and comprises: the device comprises a Buchner funnel base 2, a sludge cup 1, a filter paper fixing ring 11 and filter paper 12;
wherein, the upper end of the Buchner funnel base 2 is provided with a sludge cup bayonet, and the lower end is provided with a liquid outlet;
a clamping part (which can be fixing lugs 13 symmetrically arranged outside the cup body) is arranged outside the cup body at the bottom of the sludge cup 1 and is clamped on a sludge cup bayonet of the Buchner funnel base 2 (which can be a horizontal fixing lug groove 15 symmetrically arranged on a vertical open groove on the wall of the Buchner funnel base 2 and connected with the lower end of the open groove);
the bottom of the wall of the sludge cup 1 is provided with a clamping hole, the filter paper fixing ring 11 is provided with a bracket corresponding to the clamping hole, and the filter paper fixing ring 11 can be clamped and fixed at the bottom of the wall of the sludge cup 1 through the bracket;
the filter paper 12 is arranged at the bottom of the wall of the sludge cup 1 through the filter paper fixing ring 11.
The filter paper fixing ring 11 is of an annular structure, and the support is vertically arranged on the annular body of the filter paper fixing ring.
Above-mentioned mud cup 1's wall of cup bottom can set up a plurality of evenly distributed's the hole that clamps, also can be equipped with on the solid fixed ring of filter paper with a plurality of supports that the hole corresponds that clamp to guarantee the solid fixed ring of filter paper and the steadiness after the mud cup clamps, guarantee the fixed effect to filter paper.
The buchner funnel may further comprise: buchner funnel orifice 25 and annular sealing ring 14; buchner funnel orifice plate 25 sets up in buchner funnel base 1, establishes in mud cup 1 bottom below, sets up ring packing 14 between buchner funnel orifice plate 25 and the mud cup 1 bottom, evenly is equipped with a plurality of bleeder vents 16 on the buchner funnel orifice plate 25.
Above-mentioned buchner funnel is split type structure, and buchner funnel base and upper portion mud cup components of a whole that can function independently, mud cup can adopt light rigid plastic or organic glass material to make, places filter paper in the middle of both, and filter paper passes through the solid fixed ring of filter paper and fixes with the mud cup, and the mud that the suction filtration was accomplished is dried together with the mud cup, is weighed, has solved filter paper and has stacked and the problem of gas leakage. Buchner funnel base and upper portion mud cup components of a whole that can function independently are fixed through fixed ear to place the ring type seal between the two, prevent gas leakage.
As shown in fig. 7, the metering system 4 of the measuring apparatus includes: an annular water distribution frame 19, an air suction pipe 18, an emptying pipe 21 and a metering pipe 20; wherein, the annular water distribution frame 19 is arranged in the metering pipe 20, which can reduce the influence of filter drops on the liquid level of the filtrate and is convenient for the uniform flowing of the liquid drops; the annular water distribution frame 19 is provided with a water inlet connected with the Buchner funnel 3; the air exhaust pipe 18 and the air release pipe 21 are both connected to the metering pipe 20. The inner diameter of the metering tube 20 can be 30-60 mm, the metering tube is made of transparent materials, and scales are arranged on the metering tube, so that the accuracy of reading the volume of filtrate is enhanced; the air exhaust pipe 18 is connected with the pipe body of the metering pipe 20 above the annular water distribution frame 19, so that the influence of air exhaust on liquid drops can be reduced, and the liquid drops are prevented from being sucked into a vacuum system; an emptying valve 24 is arranged on the emptying pipe 21, and the emptying pipe 21 is connected to the lower part of the metering pipe 20 and below the scale of the metering pipe so as to facilitate the emptying of the filtrate in the metering system. In order to eliminate the influence of the volume of the emptying pipe on the reading of the volume of the filtrate and not influence the volume of the filtrate which is read next time after emptying, the emptying pipe can adopt a U-shaped pipe.
In the above-described measuring device, buchner funnel 3 and metering system 4 are directly connected by means of a union 23 or a clip.
Among the above-mentioned measuring device, oil-free vacuum pump 10 sets up outside fixed bolster 8, and oil-free vacuum pump 10 and fixed bolster separation place can reduce the vibration that oil-free vacuum pump during operation caused the fixed bolster like this. And, set up the spring damper 17 under the fixed bolster of the above-mentioned apparatus, can also reduce the vibration of the fixed bolster 8, improve and measure the accuracy.
The above-mentioned measuring apparatus may further include: the filter paper cutter 26 is a metal cylinder, the upper end of the filter paper cutter is closed, the lower end of the filter paper cutter is provided with an annular knife edge, and the size of the filter paper cutter corresponds to the specification of a Buchner funnel, so that the filter paper cutter can cut filter paper to be suitable for sludge cups of the Buchner funnels with various specifications.
The working process of the measuring device is as follows:
cutting filter paper by using a filter paper cutter according to Buchner funnels of different specifications, fixing the filter paper on a sludge cup by using a filter paper fixing support, weighing after drying and constant weight, fixing the sludge cup on a Buchner funnel base, spraying water for wetting, closing an emptying valve after water quantity reaches an emptying pipe (U-shaped pipe) of a metering system and flows out, starting an oil-free vacuum pump to enable the inside of an air exhaust pipe to be negative pressure, checking the air tightness of the whole device, and then closing the oil-free vacuum pump; pouring the mud sample into a mud cup, starting an oil-free vacuum pump again to filter and dehydrate the mud under certain conditions, recording the volume of filtrate every 10s, recording the time when the mud surface is chapped or the filtrate reaches 85% of the weight of the mud sample, closing the oil-free vacuum pump, unloading the mud cup, drying the mud cup together with filter paper and the mud, weighing the mud cup, and testing the specific resistance of the mud by the weighed weight before dehydration and the weighed weight of the mud after dehydration.
The measuring device provided by the embodiment of the utility model can meet the requirements of course sludge specific resistance experiments of water treatment experiment technology in colleges and universities and the measurement of sludge specific resistance in sewage treatment plants and related scientific research units; the filter paper stacking device well solves the problems of filter paper stacking difficulty and system air leakage, solves the problem of filtrate discharge, and is convenient to carry out multiple experiments continuously.
The above-mentioned measuring device is further described with reference to the accompanying drawings and the embodiments.
As shown in fig. 1 to 8, the modified buchner funnel 3 is composed of a sludge cup 1 and a buchner funnel base 2; two fixing lugs 13 are arranged outside the sludge cup 1, 4 clamping holes with expansion rings are uniformly distributed at the bottom of the wall of the sludge cup 1, a support of the filter paper fixing ring 11 is matched with the clamping holes, and the filter paper 12 is clamped at the bottoms of the filter paper fixing ring 11 and the wall of the sludge cup 1; the Buchner funnel base 2 is provided with a Buchner funnel pore plate 25 at the bottom, air holes 16 are uniformly distributed at the bottom according to Buchner funnels of different specifications, annular sealing rings 14 are arranged around the Buchner funnel pore plate 25, two fixing lug grooves 15 which are horizontally grooved are arranged on the cup wall of the Buchner funnel base 2 from top to bottom, and the lower parts of the fixing lug grooves are provided with horizontal grooves;
the metering system 4 comprises an annular water distribution frame 19, an air suction pipe 18, an emptying pipe 21 and a metering pipe 20, and an emptying valve 22 is arranged on the emptying pipe 21;
a spring shock absorber 17 is arranged on a foot of the fixed support 8, and a vacuum meter 6 and an adjusting valve 5 are arranged on a pressure buffer tank 7 on the tabletop of the fixed support;
The use process of the measuring device is as follows:
(1) the filter paper placing process comprises the following steps:
cutting the filter paper by using a filter paper cutter 26 according to different diameters of the Buchner funnel, placing the cut filter paper 12 at the bottom of the sludge cup 1, fixing the filter paper 12 and the sludge cup 1 by using a filter paper fixing ring 11, and completely placing the filter paper 12;
(2) measuring initial weight
The filter paper 12, the filter paper fixing ring 11 and the whole sludge cup 1 were dried at 105 ℃ to a constant weight as an initial weight.
(3) Assembled buchner funnel
The fixing lug 13 on the sludge cup 1 is aligned with the fixing lug groove 15 on the Buchner funnel base 2, and the sludge cup 1 and the Buchner funnel base 2 form the modified Buchner funnel 3 after being inserted and rotated.
(4) The sludge specific resistance measuring process comprises the following steps:
firstly, spraying clean water on filter paper 12, starting an oil-free vacuum pump 10, checking the air tightness of the device, and closing an emptying valve 22 after the clean water flows out through an emptying pipe 21; closing a valve 24, adjusting a valve 5 to ensure that the vacuum degree of the system meets the test requirement, pouring a sludge sample with a fixed volume to be tested into a sludge cup 1, opening the valve 24 to filter and dewater the sludge under a certain condition, recording the volumes of filtrate in different filtering time (such as 5s, 10s and 15s intervals) t, stopping filtering when the sludge cake is cracked or the filtrate reaches 85 percent of the original volume of the sludge, taking down the sludge cup, drying the whole body of the sludge cake and a filter paper fixing ring at 105 ℃, measuring the concentration of a filter cake, and calculating the specific resistance of the sludge.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A sludge specific resistance measuring device comprises: buchner funnel, measurement system, connecting pipe, pressure buffer tank, do not have oily vacuum pump, vacuum gauge and fixed bolster, buchner funnel, measurement system, pressure buffer tank and vacuum gauge all set up on the fixed bolster, buchner funnel in proper order with measurement system, pressure buffer tank, connecting pipe and do not have oily vacuum pump connection, the vacuum gauge sets up on pressure buffer tank, its characterized in that, buchner funnel includes:
the device comprises a Buchner funnel base, a sludge cup, a filter paper fixing ring and filter paper; wherein,
the upper end of the Buchner funnel base is provided with a sludge cup bayonet, and the lower end of the Buchner funnel base is provided with a liquid outlet;
a clamping part is arranged outside the cup body at the bottom of the sludge cup and clamped on a sludge cup bayonet of the Buchner funnel base through the clamping part;
the bottom of the wall of the sludge cup is provided with a clamping hole, the filter paper fixing ring is provided with a support corresponding to the clamping hole, and the filter paper fixing ring can be clamped and fixed at the bottom of the wall of the sludge cup through the support;
the filter paper is arranged at the bottom of the wall of the sludge cup through the filter paper fixing ring.
2. The device for measuring the specific resistance of sludge according to claim 1, wherein the filter paper fixing ring is of an annular structure, and the bracket is vertically arranged on the annular body of the filter paper fixing ring.
3. The device for measuring the specific resistance of the sludge according to claim 1 or 2, wherein a plurality of clamping holes are uniformly distributed at the bottom of the wall of the sludge cup, and a plurality of brackets corresponding to the plurality of clamping holes are arranged on the filter paper fixing ring.
4. The sludge specific resistance measuring device according to claim 1, wherein the buchner funnel further comprises:
a Buchner funnel orifice plate and an annular sealing ring;
buchner funnel orifice plate sets up in the buchner funnel base, set up mud cup bottom below, buchner funnel orifice plate with set up between the mud cup bottom annular seal ring.
5. The device for measuring the specific sludge resistance according to claim 1, wherein the metering system comprises: the annular water distribution frame, the air exhaust pipe, the emptying pipe and the metering pipe; wherein,
the annular water distribution frame is arranged in the metering pipe, and a water inlet connected with a Buchner funnel is formed in the annular water distribution frame;
the air exhaust pipe and the air release pipe are connected to the metering pipe.
6. The device for measuring the specific resistance of sludge according to claim 5, wherein the inner diameter of the measuring pipe is 30-60 mm.
7. The device for measuring the specific resistance of the sludge according to claim 5, wherein the suction pipe is connected to the metering pipe above the annular water distribution frame;
the emptying pipe is provided with an emptying valve, and the emptying pipe is connected to the lower part of the metering pipe and is a U-shaped pipe.
8. The device for measuring the specific resistance of sludge according to claim 1, wherein the buchner funnel and the metering system are connected by a union or a clamp.
9. The device for measuring the specific sludge resistance according to claim 1, further comprising: the filter paper cutter is a metal cylinder, the upper end of the filter paper cutter is closed, and the lower end of the filter paper cutter is an annular knife edge.
10. The sludge specific resistance measuring device according to claim 1, wherein the oil-free vacuum pump is disposed outside the fixed bracket, and the oil-free vacuum pump is disposed separately from the fixed bracket; and a spring shock absorber is arranged below the fixed support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200134924U CN202471543U (en) | 2012-01-12 | 2012-01-12 | Sludge specific resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200134924U CN202471543U (en) | 2012-01-12 | 2012-01-12 | Sludge specific resistance measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN202471543U true CN202471543U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200134924U Expired - Fee Related CN202471543U (en) | 2012-01-12 | 2012-01-12 | Sludge specific resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471543U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980834A (en) * | 2012-12-10 | 2013-03-20 | 中国科学院武汉岩土力学研究所 | Testing device for measuring sludge dewatering characteristics |
| CN105753289A (en) * | 2016-04-07 | 2016-07-13 | 中国石油化工股份有限公司 | Oil field sludge multi-component extraction device and method for recycling water in dryer thereof |
| CN108776155A (en) * | 2018-07-13 | 2018-11-09 | 天津科技大学 | A kind of conductance type sludge specific resistance measuring device |
-
2012
- 2012-01-12 CN CN2012200134924U patent/CN202471543U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980834A (en) * | 2012-12-10 | 2013-03-20 | 中国科学院武汉岩土力学研究所 | Testing device for measuring sludge dewatering characteristics |
| CN102980834B (en) * | 2012-12-10 | 2014-12-31 | 中国科学院武汉岩土力学研究所 | Testing device for measuring sludge dewatering characteristics |
| CN105753289A (en) * | 2016-04-07 | 2016-07-13 | 中国石油化工股份有限公司 | Oil field sludge multi-component extraction device and method for recycling water in dryer thereof |
| CN105753289B (en) * | 2016-04-07 | 2018-05-29 | 中国石油化工股份有限公司 | Moisture recovery method in a kind of oil field sludge multicomponent extraction device and its drier |
| CN108776155A (en) * | 2018-07-13 | 2018-11-09 | 天津科技大学 | A kind of conductance type sludge specific resistance measuring device |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20121003 Termination date: 20140112 |