CN108776155A - A kind of conductance type sludge specific resistance measuring device - Google Patents
A kind of conductance type sludge specific resistance measuring device Download PDFInfo
- Publication number
- CN108776155A CN108776155A CN201810782005.2A CN201810782005A CN108776155A CN 108776155 A CN108776155 A CN 108776155A CN 201810782005 A CN201810782005 A CN 201810782005A CN 108776155 A CN108776155 A CN 108776155A
- Authority
- CN
- China
- Prior art keywords
- probe
- valve
- measuring device
- specific resistance
- measurement pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
Abstract
The present invention provides a kind of conductance type sludge specific resistance measuring devices, mainly for detection of the ratio resistance value of municipal sludge or industrial sludge.The device is by vacuum pump, surge flask, regulating valve, threeway, vacuum meter, Buchner funnel, loose joint, diversion pipe, bleeding point, measurement pipe, photoconductive array probe, constant voltage source, resistance, data collecting card, computer, upper tapping valve, surge drum and lower tapping valve composition.The device determines the time for reaching specific filtrate volume by peak position in signal Analysis, has and automatically record data function, avoid manual record error according to the conductance signal during the photoconductive array probe acquisition suction filtration in measurement pipe；Upper tapping valve, surge drum and lower tapping valve are devised in measurement pipe lower end, measurement is easy to operate, avoids device repeated removal in measurement process.Therefore, the present invention has the characteristics that automatically record data and easy to operate.
Description
Technical field
The present invention relates to a kind of conductance type sludge specific resistance measuring devices, and in particular to determines sludge ratio based on conductance signal
The automatic detection device of resistance belongs to the field of measuring technique of dewatering performance of sludge analysis.
Background technology
Sludge dewatering is the most important link before sludge treatment.It is by reducing the moisture content of sludge or reducing sludge body
Product keeps subsequent sludge treatment smooth (such as burning, compost and landfill).The dehydration resistance of sludge is mainly situated between by filtering
Matter resistance and sludge (filter cake) resistance composition.Sludge dewatering resistance is bigger, and dewatering is poorer.The dehydration property of characterization sludge at present
It can be there are two leading indicator：Capillary water absorbing time and sludge specific resistance.
Capillary water absorbing time is to characterize sludge drainage by measuring diffusion velocity of the moisture in sludge on filter paper
The quality of speed and dewatering performance of sludge.Though capillary water absorbing time detection have the advantages that quickly with it is simple, it is dense by sludge
The influence of degree and filter medium (including the hydraulic permeability of medium, the hole of filter medium and the Dynamic Viscosity of filtrate etc.).Cause
This, the experimental result obtained using capillary water absorbing time measurement is comparative poor.And sludge specific resistance refers in unit filter area
The sludge of unit mass suffered resistance under a certain pressure.The measurement result of sludge specific resistance is not generally by sludge concentration shadow
It rings, is the current evaluation most common index of dewatering performance of sludge.
Accurately and quickly measuring sludge specific resistance has important application value.Traditional sludge specific resistance measurement method is mainly adopted
With vacuum filtration method, but it is mainly insufficient there are 2 points：1) measurement process needs accurately timing and reads filtrate volume, and this mistake
Journey often takes longer and is affected by artificial record；2) processing operation is cumbersome, and such as each measurement, which finishes, needs stripping device,
Next group of experiment can be just carried out after filtrate in graduated cylinder is outwelled.
Invention content
To achieve the above object, the present invention provides a kind of conductance type sludge specific resistance measuring device, it is according to mounted on measurement
The conductance signal during photoconductive array probe acquisition suction filtration on pipe, reaches specific by peak position determination in signal Analysis
The time of filtrate volume, have and automatically record data function, avoids manual record error；Upper row is devised in measurement pipe lower end
Liquid valve, surge drum and lower tapping valve, measurement is easy to operate, avoids device repeated removal in measurement process.
Technical scheme is as follows：
A kind of conductance type sludge specific resistance measuring device is provided, by vacuum pump (1), surge flask (2), regulating valve (3), threeway
(31,41), vacuum meter (4), Buchner funnel (5), loose joint (6), diversion pipe (7), bleeding point (13), measurement pipe (8), photoconductive array
It pops one's head in (81,82), constant voltage source (83), resistance (84), data collecting card (11), computer (12), upper tapping valve (9), reservoir
Cylinder (14) and lower tapping valve (10) composition；One end of surge flask (2) is connected with vacuum pump (1), and the other end is connected with threeway (31),
The other both ends of threeway (31) are connected with one end of regulating valve (3) and threeway (41) respectively, the other both ends difference of threeway (41)
It is connected with vacuum meter (4) and bleeding point (13)；The first half of loose joint (6) is connected to Buchner funnel (5) sealing, under loose joint (6)
Half portion is connected to measurement pipe (8) sealing, and bleeding point (13) is connected to the lower half wall surface sealing of loose joint (6)；The one of diversion pipe (7)
It holds and is connected to the sealing of the leakage fluid dram of Buchner funnel (5), the other end is close to the inner wall of measurement pipe (8)；Data collecting card (11) it is defeated
Enter end with photoconductive array probe (81,82) to be connected, output end is connected with computer (12)；The upper end of surge drum (14) and upper drain
Valve (9) is connected, and lower end is connected with lower tapping valve (10).
(81) are connected, the other end is connected with one end of resistance (84) with photoconductive array probe for one end of constant voltage source (83),
The other end of resistance (84) is connected with photoconductive array probe (82).
A diameter of 10-30mm of measurement pipe (8), the tapered structure in bottom end, lower end and the upper tapping valve (9) of measurement pipe (8)
It is connected.
Photoconductive array probe (81,82) is composed in series by multiple probes (80), and probe (80) uses corrosion-resistant metal materials
(such as stainless steel, copper and platinum), probe (80) diameter should be not more than 1mm；The wall surface of measurement pipe (8) is equipped with multiple specific water
Prosposition is set, and hermetically secures photoconductive array probe (81) and photoconductive array probe (82) respectively on each horizontal position
On a probe (80)；Photoconductive array probe (81) is not in contact with each other with photoconductive array probe (82).
The resistance value of resistance (84) should be within 100 kilo-ohms -10 megaohms, and the voltage of constant voltage source (83) should be less than 10V.
Upper tapping valve (9) or lower tapping valve (10) use ball valve or solenoid valve.
The time for reaching specific filtrate volume is determined according to the peak position of conductance signal.
Compared with prior art, advantage of the invention is that：Peak value in conductance signal by analyzing array probe acquisition
Position, you can determine that the time for reaching specific filtrate volume, it can be achieved that automatically record data, avoids manual record error；?
Measurement pipe lower end devises tapping valve, surge drum and lower tapping valve, and when measurement is easy to operate, avoids device in measurement process
Repeated removal.Therefore the present invention has the characteristics that automatically record data and easy to operate, has broad application prospects.
Description of the drawings
Fig. 1 is conductance type sludge specific resistance measuring device overall schematic
Fig. 2 is a kind of filtrate measuring system schematic diagram (embodiment one)
Fig. 3 is typical conductance signal and analysis
Fig. 4 is photoconductive array probe arrangement schematic diagram (embodiment two) in a kind of filtrate measuring system
In Fig. 1,1 vacuum pump, 2 surge flasks, 3 regulating valves, 31 threeways, 32 threeways, 4 vacuum meters, 5 Buchner funnels, 6 loose joints, 7
Diversion pipe, 8 measurement pipes, tapping valve on 9,10 times tapping valves, 11 data collecting cards, 12 computers, 13 bleeding points, 14 surge drums,
81 photoconductive arrays are popped one's head in, 82 photoconductive arrays probe, 80 probes, 83 constant voltage sources, 84 resistance.
Specific implementation mode
With reference to specific embodiment and attached drawing, the present invention is further elaborated, it should be noted that these embodiments are only used
In illustrate the present invention and do not limit the scope of the invention, those skilled in the art are right after having read detailed content of the present invention
The various changes or modification that the present invention carries out should all fall within the restriction range of the present invention.
A kind of conductance type sludge specific resistance measuring device embodiment one of the invention：As shown in Figure 1, the present invention is by vacuum pump 1, slow
Rush bottle 2, regulating valve 3, threeway 31, threeway 32, vacuum meter 4, Buchner funnel 5, loose joint 6, diversion pipe 7, bleeding point 13, measurement pipe 8,
Photoconductive array probe 81, photoconductive array probe 82, constant voltage source 83, resistance 84, data collecting card 11, computer 12, ball valve 9,
Surge drum 14 and ball valve 10 form.One end of surge flask 2 is connected with vacuum pump 1, and the other end is connected with threeway 31, threeway 31 it is another
Outer both ends are connected with one end of regulating valve 3 and threeway 41 respectively, the other both ends of threeway 41 respectively with vacuum meter 4 and bleeding point 13
It is connected.The first half of loose joint 6 is connected to the sealing of Buchner funnel 5, and the lower half of loose joint 6 is connected to the sealing of measurement pipe 8, bleeding point 13
It is connected to 6 lower half wall surface sealing of loose joint, one end of diversion pipe 7 is connected to the sealing of the leakage fluid dram of Buchner funnel 5, and the other end is close to
The inner wall of measurement pipe 8.The input terminal of data collecting card 11 is connected with photoconductive array probe 81 and photoconductive array probe 82, output end
It is connected with computer 12.The upper end of surge drum 14 is connected with ball valve 9, and lower end is connected with ball valve 10.
Such as Fig. 2, one end of constant voltage source 83 and photoconductive array probe 81 be connected, one end phase of the other end and resistance 84
Even, the other end of resistance 84 is connected with photoconductive array probe 82.
The lower end of a diameter of 15mm of measurement pipe 8, the tapered structure in bottom end, measurement pipe 8 are connected with ball valve 9.
Photoconductive array probe 81 or photoconductive array probe 82 are composed in series by 25 probes 80, and probe 80 uses stainless steel
Material, a diameter of 0.6mm.The wall surface of measurement pipe 8 is equipped with 25 specific horizontal positions, this 25 specific azimuth positions correspond to
25 specific filtrate volumes, such as 2mL, 4mL, 6mL ..., 50mL.Sealing secures electricity respectively on each horizontal position
Lead a probe 80 on array probe 81 and photoconductive array probe 82.Two probes (80) in the same horizontal position are in just
To arrangement, therefore photoconductive array probe 81 is not in contact with each other with photoconductive array probe 82.
The resistance value of resistance 84 is set as 1000 kilo-ohms, and the voltage of constant voltage source 83 is 5V.
The concrete operations that sludge specific resistance measures are as follows：
Each section of measuring device is connected by Fig. 1.Ball valve 9 and ball valve 10 are closed, filter paper is placed on Buchner funnel 5,
So that it is adjacent to all bottoms with water wetting, starts vacuum pump 1, it is about the 2/3 of experimental pressure to adjust vacuum pressure, so that filter paper is inhaled completely
On Buchner funnel 5, turn off vacuum pump 1,100g (initial solid holdup is Cs) sludge to be measured is added and in Buchner funnel 5, opens
Ball valve 9, drain are then shut off ball valve 9, start computer 12 and record conductance signal.Vacuum pump 1 is started again, adjusts vacuum pressure
Power is to experimental pressure, after reaching this experimental pressure, filters always to after vacuum breaking or reaching set time (such as 20min)
Vacuum pump 1 can be closed and stop experiment.It removes filter cake to be put into measuring cup (having weighed, be denoted as M1), and is weighed and (be denoted as
M2), the measuring cup equipped with filter cake put into baking oven (105 DEG C) to drying to constant weight, is cooled to room temperature and weighs (being denoted as M3).Open ball
Valve 9 is rinsed with water Buchner funnel 5, then opens ball valve 10 and bleed off liquid in measurement pipe 8 and surge drum 14, prepares experiment next time.
When two probes 80 in filtrate submergence same level, (a falling) peak signal will produce.Such as Fig. 3, work as filter
When liquid submerges the probe 80 of the horizontal positions 1#, first (from left to right) peak signal will be generated, when filtrate submerges 2# horizontal positions
When the probe 80 set, second peak signal will be generated, and so on.
Conductance signal is analyzed as follows (see Fig. 3)：
[1] difference is carried out to conductance signal, obtains differential signal；
[2] the characteristics of being decayed according to conductance peaks in detection process, processing (i.e. differential signal is weighted to differential signal
It is multiplied by the corresponding time), obtain weighted difference signal；
[3] determine that peak position, as filtrate reach particular probe (i.e. according to weighted difference signal and in conjunction with given threshold
Designated volume) time.
The relational graph that t/V and V can be obtained according to the data of record is determined by the linear relation of filtering initial stage t/V and V
Slope b.Final sludge specific resistance r is calculate by the following formula：
In formula：R- sludge specific resistances, P- filter pressures, A- filter areas, b-With the slope in V relational graphs, μ-filtrate sticks
Degree, the mud dry weight of c- unit filtrates.
Wherein：The mud dry weight c calculation formula of unit filtrate are as follows：
Filter cake solid holdup CcCalculation formula it is as follows：
A kind of conductance type sludge specific resistance measuring device embodiment two of the invention：The structure of embodiment two is basic with embodiment one
Identical, difference essentially consists on the wall surface of measurement pipe 8 fixed photoconductive array probe 81 and photoconductive array in specific azimuth position
It is arranged in 30 degree of angles (see Fig. 4) rather than face between probe 80 on probe 82, photoconductive array probe 81 and photoconductive array are visited
First 82 are equally not in contact with each other；In addition tapping valve uses solenoid valve rather than ball valve up and down.Two other structures of the specific embodiment of the invention
Identical as above-described embodiment one, details are not described herein again.
Claims (7)
1. a kind of conductance type sludge specific resistance measuring device, it is characterised in that by vacuum pump (1), surge flask (2), regulating valve (3), three
Logical (31,41), vacuum meter (4), Buchner funnel (5), loose joint (6), diversion pipe (7), bleeding point (13), measurement pipe (8), conductance battle array
Row probe (81,82), constant voltage source (83), resistance (84), data collecting card (11), computer (12), upper tapping valve (9), storage
Fluid cylinder (14) and lower tapping valve (10) composition；One end of surge flask (2) is connected with vacuum pump (1), the other end and threeway (31) phase
Even, the other both ends of threeway (31) are connected with one end of regulating valve (3) and threeway (41) respectively, the other both ends point of threeway (41)
It is not connected with vacuum meter (4) and bleeding point (13)；The first half of loose joint (6) is connected to Buchner funnel (5) sealing, loose joint (6)
Lower half is connected to measurement pipe (8) sealing, and bleeding point (13) is connected to the lower half wall surface sealing of loose joint (6)；Diversion pipe (7)
One end is connected to the sealing of the leakage fluid dram of Buchner funnel (5), and the other end is close to the inner wall of measurement pipe (8)；Data collecting card (11)
Input terminal is connected with photoconductive array probe (81,82), and output end is connected with computer (12)；The upper end of surge drum (14) and upper row
Liquid valve (9) is connected, and lower end is connected with lower tapping valve (10).
2. conductance type sludge specific resistance measuring device according to claim 1, it is characterised in that one end of constant voltage source (83)
(81) are connected, the other end is connected with one end of resistance (84), the other end and photoconductive array of resistance (84) with photoconductive array probe
Probe (82) is connected.
3. conductance type sludge specific resistance measuring device according to claim 1, it is characterised in that measurement pipe (8) it is a diameter of
The lower end of 10-30mm, the tapered structure in bottom end, measurement pipe (8) are connected with upper tapping valve (9).
4. conductance type sludge specific resistance measuring device according to claim 1, it is characterised in that photoconductive array pops one's head in (81,82)
It is composed in series by multiple probes (80), probe (80) uses corrosion-resistant metal materials (such as stainless steel, copper and platinum), probe (80)
Diameter should be not more than 1mm；The wall surface of measurement pipe (8) is equipped with multiple specific horizontal positions, on each horizontal position
A probe (80) on photoconductive array probe (81) and photoconductive array probe (82) is hermetically secured respectively；Photoconductive array is visited
Head (81) is not in contact with each other with photoconductive array probe (82).
5. conductance type sludge specific resistance measuring device according to claim 1, it is characterised in that the resistance value of resistance (84) should be
Within 100 kilo-ohms -10 megaohms, the voltage of constant voltage source (83) should be less than 10V.
6. conductance type sludge specific resistance measuring device according to claim 1, it is characterised in that upper tapping valve (9) or lower drain
Valve (10) uses ball valve or solenoid valve.
7. conductance type sludge specific resistance measuring device according to claim 1, it is characterised in that according to the peak value of conductance signal
Position reaches the time of specific filtrate volume to determine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782005.2A CN108776155A (en) | 2018-07-13 | 2018-07-13 | A kind of conductance type sludge specific resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782005.2A CN108776155A (en) | 2018-07-13 | 2018-07-13 | A kind of conductance type sludge specific resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108776155A true CN108776155A (en) | 2018-11-09 |
Family
ID=64029926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810782005.2A Pending CN108776155A (en) | 2018-07-13 | 2018-07-13 | A kind of conductance type sludge specific resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108776155A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814649A (en) * | 2021-01-04 | 2021-05-18 | 天津科技大学 | Intelligent metering device and method for water content of oil well produced liquid |
| CN114544421A (en) * | 2022-02-25 | 2022-05-27 | 天津科技大学 | Sludge dewatering performance measuring device and using method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201828559U (en) * | 2010-10-22 | 2011-05-11 | 宇星科技发展(深圳)有限公司 | Multi-connected sludge specific resistance measurement device |
| CN202256317U (en) * | 2011-09-19 | 2012-05-30 | 北京万水净水剂有限公司 | Sludge specific resistance determining device |
| CN202471543U (en) * | 2012-01-12 | 2012-10-03 | 北京建筑工程学院 | Sludge specific resistance measuring device |
| 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 |
| CN103058472A (en) * | 2012-10-30 | 2013-04-24 | 天津城市建设学院 | Chemical conditioning method for improving dehydration property of surplus sludge |
| CN103196515A (en) * | 2013-04-03 | 2013-07-10 | 集美大学 | Wave and tide level testing device |
| CN105466326A (en) * | 2015-12-16 | 2016-04-06 | 榆林学院 | Experiment apparatus and measure method for measuring change of liquid film thickness with time by using conductance probe |
-
2018
- 2018-07-13 CN CN201810782005.2A patent/CN108776155A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201828559U (en) * | 2010-10-22 | 2011-05-11 | 宇星科技发展(深圳)有限公司 | Multi-connected sludge specific resistance measurement device |
| CN202256317U (en) * | 2011-09-19 | 2012-05-30 | 北京万水净水剂有限公司 | Sludge specific resistance determining device |
| CN202471543U (en) * | 2012-01-12 | 2012-10-03 | 北京建筑工程学院 | Sludge specific resistance measuring device |
| CN103058472A (en) * | 2012-10-30 | 2013-04-24 | 天津城市建设学院 | Chemical conditioning method for improving dehydration property of surplus sludge |
| 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 |
| CN103196515A (en) * | 2013-04-03 | 2013-07-10 | 集美大学 | Wave and tide level testing device |
| CN105466326A (en) * | 2015-12-16 | 2016-04-06 | 榆林学院 | Experiment apparatus and measure method for measuring change of liquid film thickness with time by using conductance probe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814649A (en) * | 2021-01-04 | 2021-05-18 | 天津科技大学 | Intelligent metering device and method for water content of oil well produced liquid |
| CN112814649B (en) * | 2021-01-04 | 2023-03-10 | 天津科技大学 | Intelligent metering device and method for water content of oil well produced liquid |
| CN114544421A (en) * | 2022-02-25 | 2022-05-27 | 天津科技大学 | Sludge dewatering performance measuring device and using method |
| CN114544421B (en) * | 2022-02-25 | 2024-03-12 | 天津科技大学 | Sludge dewatering performance measuring device and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208171813U (en) | A kind of multi-functional permeability test device | |
| CN105092450B (en) | A kind of hypotonicity saturated clay permeation tester and method of testing | |
| CN106192969B (en) | One kind is based on the full discharge orifice pressure feeler inspection penetrometer of ball-type and its coefficient of consolidation evaluation method | |
| CN103471953A (en) | Automatic test system and test method for testing surface capillary water absorption of concrete | |
| CN202126434U (en) | Measuring device for slit content in muddy water | |
| CN108776155A (en) | A kind of conductance type sludge specific resistance measuring device | |
| CN108827853B (en) | Nuclear magnetic resonance-based tight reservoir rock electric measurement device and measurement method | |
| CN103061321B (en) | Cone penetrometer for evaluating penetration property of unsaturated soil | |
| CN106501151A (en) | A kind of shale aperture measurement device and method based on imbibition and ion diffusion property | |
| CN105842129A (en) | Continuous monitoring device and method for water absorption process of porous material | |
| CN209069798U (en) | A kind of darcy permeability test instrument | |
| CN206450467U (en) | A kind of water quality monitoring pretreatment unit and water quality early-warning device | |
| CN106840990A (en) | A kind of achievable permeability apparatus for becoming effect of water pressure | |
| CN206161087U (en) | Gassiness flow measurement gasometry meter | |
| CN208060264U (en) | A kind of flow-type electrochemistry extraction/cell | |
| Patrick Jr | Oxygen content of soil air by a field method | |
| CN211374665U (en) | Sludge dewatering performance testing device | |
| CN111504871A (en) | Rock mass fracture unsaturated seepage test system | |
| CN104075984A (en) | Post evaluation system for polluted soil remediation | |
| CN114544421B (en) | Sludge dewatering performance measuring device and using method | |
| CN203835378U (en) | Multifunctional gas parameter measuring device | |
| CN205619988U (en) | Gaseous ration meter of gassiness volume desorption | |
| CN205562330U (en) | Be applicable to core sample stripping gas measuring equipment | |
| CN111198147B (en) | Gas content analysis device | |
| CN204758452U (en) | Hypotonicity saturated clay infiltration apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181109 |