CN206725377U - One kind automation sludge specific resistance measurement device - Google Patents
One kind automation sludge specific resistance measurement device Download PDFInfo
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- CN206725377U CN206725377U CN201720558687.XU CN201720558687U CN206725377U CN 206725377 U CN206725377 U CN 206725377U CN 201720558687 U CN201720558687 U CN 201720558687U CN 206725377 U CN206725377 U CN 206725377U
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Abstract
It the utility model is related to a kind of automation sludge specific resistance measurement device,Can effectively solve the problems, such as the Accurate Determining of sludge specific resistance,Technical scheme is,Bottle,suction is placed with electronic balance,Suction funnel is provided with closed experimental box,Horizontal porous support plate is provided with suction funnel,Filter paper is equipped with porous support plate,The infraoral of suction funnel is equipped with the first connecting tube for stretching into bottle,suction intracavity bottom,Second connecting tube of the top of bottle,suction equipped with one end with its intracavity inter-connection,Suction filtration pipeline of the intermediate buffering bottle top equipped with one end with its intracavity inter-connection,The pipeline other end is filtered with vavuum pump to be connected,Valve and vacuum meter are sequentially arranged with the first connecting tube between suction funnel and bottle,suction,The output end of electronic balance is connected with computer,The utility model realizes the automatic assay of sludge specific resistance by computer program control,Read and record test data is easier,Accurately,With easy to use,It is simple to operate,The advantages of measurement data degree of accuracy is high.
Description
Technical field
Technical field of sludge treatment is the utility model is related to, particularly a kind of automation sludge specific resistance measurement device and measure
Method.
Background technology
Processing of the moisture content of sludge to sludge has important influence, the either burning of sludge or sludge with disposal
Landfill all have strict requirements to the moisture content of sludge, for example, Sludge landfill processing requirement its moisture content is less than 60%.Separately
Outside, the moisture content of sludge directly affects the volume of sludge, and the moisture content of sludge is higher, and its volume is also bigger, and sludge dewatering can be with
Its volume is significantly reduced, facilitates transport and the subsequent treatment of sludge.Therefore, the dewatering of sludge is studied, is had important
Meaning.Sludge specific resistance is to represent one of important indicator of dewatering performance of sludge, either the actual treatment in sludge and disposal
In engineering practice, or in theory teaching, the accurate and quick measure for studying sludge specific resistance has important application value.Pass
The sludge specific resistance assay method of system typically uses suction method.The shortcomings that following and deficiency be present in it：First, need two in measurement
Individual and above people coordinates experiment, manual time-keeping and reading, is fallen in experiment incipient stage filtrate rapid, artificial reading exists unavoidably
Error, influence measurement result；Second, system design existing defects, when filtrate is fallen, liquid level fluctuates up and down is forbidden reading, error
Increase；Third, when existing funnel places filter paper, in the easy gas leakage of measurement process, and experiment finishes filter cake and is difficult to take out, and causes to filter
Cake mass measurement is inaccurate, influences final measurement；Fourth, apparatus main body connects together with vavuum pump, though realization device is integral
Change, but the vibrations of vavuum pump can influence the accurate reading of filtrate volume；Fifth, manual measurement, subsequent processing steps are cumbersome, effect
Rate is low.The presence of problem above, engineering practice and theory teaching needs of the actual treatment of sludge with disposal can not be met.Institute
With, it is necessary to existing sludge specific resistance measurement device is improved, to meet actual demand.
Utility model content
It is overcome the deficiencies in the prior art for the above situation, the purpose of the utility model is just to provide a kind of automation
Sludge specific resistance measurement device, can effectively solve the problems, such as the Accurate Determining of sludge specific resistance, meanwhile, continuous mode is simpler quick,
Present teaching, research and production Operations Requirements can effectively be met.
The technical solution of the utility model is：
One kind automation sludge specific resistance measurement device, including closed experimental box and the electronics day that is arranged in closed experimental box
Put down, intermediate buffering bottle, be placed with bottle,suction on electronic balance, bottle,suction and intermediate buffering bottle are closed hollow structure, close
Close and suction funnel is provided with experimental box, horizontal porous support plate is provided with suction funnel, be evenly equipped with porous support plate up and down
The suction filtration hole of insertion, is equipped with filter paper on porous support plate, and the infraoral of suction funnel, which is equipped with, stretches into the of bottle,suction intracavity bottom
One connecting tube, second connecting tube of the top equipped with one end with its intracavity inter-connection of bottle,suction, the other end of the second connecting tube are stretched
Enter the intracavity bottom of intermediate buffering bottle, suction filtration pipeline of the intermediate buffering bottle top equipped with one end with its intracavity inter-connection, suction filtering tube
The road other end stretches out closed experimental box, and one end of stretching is connected with vavuum pump, forms and filters structure, suction funnel and bottle,suction it
Between the first connecting tube on be sequentially arranged with valve and vacuum meter, the output end of electronic balance is connected with computer.
Described suction funnel includes base and funnel body, and on base, porous support plate is horizontally disposed with funnel body
In the top of funnel body, the upper oral part of funnel body is equipped with extending through buckle, and the sludge for forming reassembling type contains structure.
The first connecting tube, the second connecting tube and suction filtration pipeline in described closed experimental box are fixed by neck.
Described electronic balance is placed on electronic balance mounting table.
Described intermediate buffering bottle is fixed on buffering bottle base.
A kind of sludge specific resistance assay method, comprises the following steps：
A, installation automation sludge specific resistance measurement device
Described automation sludge specific resistance measurement device includes closed experimental box and the electronics being arranged in closed experimental box
Balance, intermediate buffering bottle, bottle,suction is placed with electronic balance, bottle,suction and intermediate buffering bottle are closed hollow structure,
Suction funnel is provided with closed experimental box, horizontal porous support plate is provided with suction funnel, is evenly equipped with porous support plate
The suction filtration hole of lower insertion, is equipped with filter paper on porous support plate, and the infraoral of suction funnel is equipped with stretching into bottle,suction intracavity bottom
First connecting tube, second connecting tube of the top equipped with one end with its intracavity inter-connection of bottle,suction, the other end of the second connecting tube
The intracavity bottom of intermediate buffering bottle is stretched into, suction filtration pipeline of the intermediate buffering bottle top equipped with one end with its intracavity inter-connection, is filtered
The pipeline other end stretches out closed experimental box, and one end of stretching is connected with vavuum pump, forms and filters structure, suction funnel and bottle,suction
Between the first connecting tube on be sequentially arranged with valve and vacuum meter, the output end of electronic balance is connected with computer；
Described suction funnel includes base and funnel body, and on base, porous support plate is horizontally disposed with funnel body
In the top of funnel body, the upper oral part of funnel body is equipped with extending through buckle, and the sludge for forming reassembling type contains structure；
B, test prepares
(a) air-tightness, is checked
Close valve, open vavuum pump, when vacuum meter reading be the definite value that is pre-designed constantly, close vavuum pump, 10min
Afterwards, if the reading of vacuum meter 10 remains unchanged, illustrate that device air-tightness is good, on the contrary device then gas leakage, it is impossible to carry out in next step
Rapid operation, apparatus for examination and repair, until airtight test is qualified；
(b) extending of suction funnel, is pulled down, the filter paper after drying is covered on porous support plate, then by extending
22 are installed in funnel body, with buckle clamping；Filter paper is soaked with distilled water, vavuum pump and valve is opened, distilled water is taken out
To bottle,suction, water 30s to be distilled nowhere when, close vavuum pump and valve；Electronic balance and computer are opened, passes through calculating
Electronic balance reading is zeroed by machine；
C, measurement and record
Vavuum pump 2 is opened, observes the reading of vacuum meter 10, treats that pressure reaches experiment and taken, is w by weight in wet base1Treat
Survey sludge and pour into suction funnel 14, start to measure by computer selection, open valve 13, now computer 16 is tested
The record of data；
The record in fast filtering stage is carried out first：A time t is recorded every 10s-15si, simultaneous computer passes through reading
Take and export the filtrate quality m that electronic balance is showni, and real-time display time tiWith filtrate quality mi；Each time tiCorresponding one
Individual filtrate quality mi；Described filtrate refers to that sludge to be measured is filtered to the liquid of bottle,suction 8；
The record of filtration stage at a slow speed is carried out again：When two neighboring and above time point filtrate quality m fluctuation ranges exist
When within 1g, time interval, which can change to every 30s-60s, records corresponding time tiWith corresponding filtrate quality mi；
D, measurement is terminated
Whether computer terminates according to the m values automatic decision experiment read, and discriminant approach is：
Work as ma-mbDuring≤Δ m, experiment is automatically stopped, wherein：
ma=(mi+1+mi+2+mi+3+mi+4+mi+5)/5
mb=(mi+mi+1+mi+2+mi+3+mi+4)/5
(i=1,2,3 ...)
Wherein miRepresent filtrate quality corresponding to the ith record time, mi+1Represent to filter corresponding to the i+1 time record time
Liquid quality, the like；
Δ m is experiment sensitivity, can be according to requirement of experiment value, unit g；
After terminating measurement, vavuum pump 2 is closed, terminates experiment；
E, sludge specific resistance r is calculated
(a) b values are asked for
Remember xi=mi/ ρ, yi=tiρ/mi, wherein, ρ is the density of filtrate to be measured, to xiWith yiLinear fit is done, is drawn straight
Line equation y=bx+c, wherein b, c are constant, and b is slope, and c is Linear intercept；Its computational methods is as follows：
Linear fit scope can be determined by following formula
In formula：biFor (xi, yi) to (xi+5, yi+5) corresponding to slope；
bi+1For (xi+1, yi+1) to (xi+6, yi+6) corresponding to slope；
saFor sensitivity factor；
(b) the relation value C between sludge filter cake dry weight and filtrate volume is calculated
Remaining sludge is referred to as filter cake in suction funnel (14), takes out filter cake measurement filter cake weight in wet base w2, baking oven is put into afterwards,
Filter cake dry weight w is weighed after drying3, w1For the sludge weight in wet base weighed in advance,
Pass through formulaCalculate the relation value C between sludge filter cake dry weight and filtrate volume
Wherein, CiFor the dewatered sludge weight (g) in 100 grams of sludge, Ci=(w3/w1)×100；
CfFor the dewatered sludge weight (g) in 100 grams of filter cakes, Cf=(w3/w2)×100；
(c) design factor k
Pass throughDesign factor k, wherein：
P can be read to filter vacuum pressure absolute value by vacuum meter；
A2For square of filter area,Wherein D is filter paper diameter；
U is filtrate viscosity (its value usable viscosity measures)
(d) sludge specific resistance r is calculated
Bring relation slope b, relation value C and coefficient k obtained above into following formula：
Produce resistivity r.
The utility model structure novel and unique, advantages of simple, easily production, easy to operate, cost is low, passes through computer program control
System realizes the automatic assay of sludge specific resistance, reads and record test data is easier, accurate；Intermediate buffering bottle is additionally arranged,
And be independently placed on outside experimental operation table, meanwhile, vavuum pump isolates installation with measuring unit, can effectively prevent vibrations to electronics day
The influence of flat measurement result, by the structure design of uniqueness, the impact to caused by electronic balance when filtrate is fallen is eliminated, raising
The degree of accuracy of measurement result；In addition, intermediate buffering bottle can also effectively prevent liquid suck-back, the work of systems stabilisation pressure is played
With；Suction funnel is designed as split type, makes to pick and place that filter paper and sludge are more convenient, and the mass measurement of sludge is more accurate, meanwhile,
Avoid gas leakage and the generation of the phenomenon of leakage；This method has easy to use, simple to operate, high excellent of the measurement data degree of accuracy
Point, it is the innovation on sludge specific resistance measurement device and assay method.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model suction funnel.
Fig. 3 is the utility model image x-y schematic diagrames.
Embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing.
Provided by Fig. 1 to Fig. 3, a kind of automation sludge specific resistance measurement device of the utility model, it is characterised in that including close
Experimental box 1 and the electronic balance 6, the intermediate buffering bottle 3 that are arranged in closed experimental box 1 are closed, bottle,suction is placed with electronic balance 6
8, bottle,suction 8 and intermediate buffering bottle 3 are closed hollow structure, and suction funnel 14 is provided with closed experimental box 1, filter leakage
Horizontal porous support plate 19 is provided with bucket 14, is evenly equipped with the suction filtration hole of up/down perforation on porous support plate 19, on porous support plate 19
Filter paper 20 is equipped with, the infraoral of suction funnel 14 is equipped with the first connecting tube 11 for stretching into the intracavity bottom of bottle,suction 8, bottle,suction 8
Second connecting tube 9 of the top equipped with one end and its intracavity inter-connection, the other end of the second connecting tube 9 stretches into intermediate buffering bottle 3
Intracavity bottom, suction filtration pipeline 23 of the top of intermediate buffering bottle 3 equipped with one end and its intracavity inter-connection, filter the other end of pipeline 23
Closed experimental box 1 is stretched out, one end of stretching is connected with vavuum pump 2, forms and filters structure, between suction funnel 14 and bottle,suction 8
The first connecting tube 11 on be sequentially arranged with valve 13 and vacuum meter 10, the output end of electronic balance 6 is connected with computer 16.
To ensure using effect, described suction funnel 14 includes base 15 and funnel body 18, and funnel body 18 is mounted in
On base 15, porous support plate 19 is horizontally set in the top of funnel body 18, and the upper oral part of funnel body 18 fills through buckle 21
There is extending 22, the sludge for forming reassembling type contains structure, and suction funnel is split type, picks and places filter paper and sludge and more facilitates,
And it ensure that air tight when placing filter paper, and avoid funnel caused device damage during sludge and filter paper is picked and placeed,
Service life is extended, the suction funnel is ceramic material.
The first connecting tube 11, the second connecting tube 9 and suction filtration pipeline 23 in described closed experimental box 1 pass through neck 12
Fixed, the first connecting tube 11 is Hard link pipe, and the spacing that the first connecting tube 11 stretches into bottle,suction one end and bottle,suction bottom is
1cm, Hard link pipe are that filtrate flows into end, it is therefore intended that filtrate is slowly fallen, reduce impact.
Described electronic balance 6 is placed on electronic balance mounting table 5, keeps stable；Described intermediate buffering bottle 3 is fixed
On buffering bottle base 4, keep stable.
The closed experimental box 1 is clear hollow structure made of metal material, and it is accurate that pressure gauge can pass through closed experimental box
Pressure is filtered when really reading experiment.
A kind of sludge specific resistance assay method, comprises the following steps：
A, installation automation sludge specific resistance measurement device
Described automation sludge specific resistance measurement device includes closed experimental box 1 and the electricity being arranged in closed experimental box 1
Sub- balance 6, intermediate buffering bottle 3, bottle,suction 8 are placed with electronic balance 6, during bottle,suction 8 and intermediate buffering bottle 3 are closed
Hollow structure, suction funnel 14 is provided with closed experimental box 1, horizontal porous support plate 19 is provided with suction funnel 14, it is porous
The suction filtration hole of up/down perforation is evenly equipped with support plate 19, filter paper 20, the infraoral dress of suction funnel 14 are equipped with porous support plate 19
There is the first connecting tube 11 for stretching into the intracavity bottom of bottle,suction 8, the top of bottle,suction 8 is equipped with the second of one end and its intracavity inter-connection
Connecting tube 9, the other end of the second connecting tube 9 stretch into the intracavity bottom of intermediate buffering bottle 3, and the top of intermediate buffering bottle 3 is equipped with one end
With the suction filtration pipeline 23 of its intracavity inter-connection, filter the other end of pipeline 23 and stretch out closed experimental box 1, one end of stretching and vavuum pump
2 are connected, and form and filter structure, and valve 13 and very is sequentially arranged with the first connecting tube 11 between suction funnel 14 and bottle,suction 8
Empty table 10, the output end of electronic balance 6 are connected with computer 16；
Described suction funnel 14 includes base 15 and funnel body 18, and funnel body 18 is on base 15, porous branch
Plate 19 is horizontally set in the top of funnel body 18, and the upper oral part of funnel body 18 is equipped with extending 22 through buckle 21, is formed
The sludge of reassembling type contains structure；
B, test prepares
(a) air-tightness, is checked
Close valve 13, open vavuum pump 2, when the reading of vacuum meter 10 be the definite value that is pre-designed constantly, close vavuum pump,
After 10min, if the reading of vacuum meter 10 remains unchanged, illustrate that device air-tightness is good, on the contrary device then gas leakage, it is impossible to carry out down
One step operation, apparatus for examination and repair, until airtight test is qualified；
(b) extending 22 of suction funnel 14, is pulled down, the filter paper 20 after drying is covered on porous support plate 19, then
Extending 22 is installed in funnel body 18, with the clamping of buckle 21；Filter paper 20 is soaked with distilled water, opens the He of vavuum pump 2
Valve 13, distilled water is evacuated in bottle,suction 8, water 30s to be distilled nowhere when, close vavuum pump 2 and valve 13；Open electronics
Balance 6 and computer 16, the reading of electronic balance 6 is zeroed by computer；
C, measurement and record
Vavuum pump 2 is opened, observes the reading of vacuum meter 10, treats that pressure reaches experiment and taken, is w by weight in wet base1Treat
Survey sludge and pour into suction funnel 14, start to measure by computer selection, open valve 13, now computer 16 is tested
The record of data；
The record in fast filtering stage is carried out first：A time t is recorded every 10s-15si(compuman can be passed through
Work independently selects timing cycle), simultaneous computer is by reading and exporting the filtrate quality m that electronic balance is showni, and show in real time
Show time tiWith filtrate quality mi；Each time tiA corresponding filtrate quality mi；Described filtrate refers to that sludge to be measured filters
To the liquid of bottle,suction 8；
The record of filtration stage at a slow speed is carried out again：When two neighboring and above time point filtrate quality m fluctuation ranges exist
When within 1g, time interval, which can change to every 30s-60s (can independently select timing cycle by Artificial), records phase
The time t answerediWith corresponding filtrate quality mi；
D, measurement is terminated
Whether computer terminates according to the m values automatic decision experiment read, and discriminant approach is：
Work as ma-mbDuring≤Δ m, experiment is automatically stopped, wherein：
ma=(mi+1+mi+2+mi+3+mi+4+mi+5)/5
mb=(mi+mi+1+mi+2+mi+3+mi+4)/5
(i=1,2,3 ...)
Wherein miRepresent filtrate quality corresponding to the ith record time, mi+1Represent to filter corresponding to the i+1 time record time
Liquid quality, the like；
Δ m is experiment sensitivity, can be according to requirement of experiment value, unit g；
After terminating measurement, vavuum pump 2 is closed, terminates experiment；
E, sludge specific resistance r is calculated
(a) b values are asked for
Remember xi=mi/ρ,yi=tiρ/mi, wherein, ρ be filtrate to be measured density (can be drawn by densimeter measurement, also can be by
Physical property handbook checks in), to xiWith yiLinear fit is done, draws linear equation y=bx+c, wherein b, c is constant, and b is slope, and c is
Linear intercept；Its computational methods is as follows：
Linear fit scope can be determined by following formula
In formula：biFor (xi, yi) to (xi+5, yi+5) corresponding to slope；
bi+1For (xi+1, yi+1) to (xi+6, yi+6) corresponding to slope；
saFor sensitivity factor；
(b) the relation value C between sludge filter cake dry weight and filtrate volume is calculated
Remaining sludge is referred to as filter cake in suction funnel (14), takes out filter cake measurement filter cake weight in wet base w2, baking oven is put into afterwards,
Filter cake dry weight w is weighed after drying3, w1For the sludge weight in wet base weighed in advance,
Pass through formulaCalculate the relation value C between sludge filter cake dry weight and filtrate volume
Wherein, CiFor the dewatered sludge weight (g) in 100 grams of sludge, Ci=(w3/w1)×100；
CfFor the dewatered sludge weight (g) in 100 grams of filter cakes, Cf=(w3/w2)×100；
(c) design factor k
Pass throughDesign factor k, wherein：
P can be read to filter vacuum pressure absolute value by vacuum meter；
A2For square of filter area,Wherein D is filter paper diameter；
U is filtrate viscosity (its value usable viscosity measures)
(d) sludge specific resistance r is calculated
Bring relation slope b, relation value C and coefficient k obtained above into following formula：
Produce resistivity r.
The definite value that vacuum meter described in embodiment step B is pre-designed is 0.08MPa；Institute in embodiment step D
The experiment sensitivity Δ m stated is 0.1g, the sensitivity factor s described in embodiment step Da=1.2.
The utility model through practical application, achieve it is same or like as experimental result, experiment is as follows：
The excess sludge of certain secondary sedimentation tank of sewage treatment work is taken, is repeatedly surveyed respectively with the utility model method and conventional method
Determine sludge specific resistance, its result is as shown in the table：
From measurement result as can be seen that the coefficient R of conventional method matched curve2Maximum relative error be
2.665%, the maximum relative error of this method is 1.52%；The maximum relative error of conventional method sludge specific resistance measurement result is
36.7%, the big error of this method is 4.27%, and the standard deviation of this method is also relatively small.The either measure of sludge specific resistance
As a result stability and reappearance, or from the point of view of the correlation of matched curve, the utility model method compares traditional sludge ratio
Resistance assay method all has obvious advantage.
Claims (5)
1. one kind automation sludge specific resistance measurement device, it is characterised in that including closed experimental box (1) and be arranged on closed experiment
Electronic balance (6), intermediate buffering bottle (3) in case (1), are placed with bottle,suction (8) on electronic balance (6), bottle,suction (8) and in
Between surge flask (3) be closed hollow structure, suction funnel (14), suction funnel (14) are provided with closed experimental box (1)
Horizontal porous support plate (19) is inside provided with, the suction filtration hole of up/down perforation, porous support plate (19) are evenly equipped with porous support plate (19)
On be equipped with filter paper (20), the infraoral of suction funnel (14) is equipped with the first connecting tube for stretching into bottle,suction (8) intracavity bottom
(11), second connecting tube (9) of the top of bottle,suction (8) equipped with one end and its intracavity inter-connection, the second connecting tube (9) it is another
The intracavity bottom of intermediate buffering bottle (3), suction filtering tube of intermediate buffering bottle (3) top equipped with one end with its intracavity inter-connection are stretched into end
Road (23), filter pipeline (23) other end and stretch out closed experimental box (1), one end of stretching is connected with vavuum pump (2), forms and filters
Structure, valve (13) and vacuum meter are sequentially arranged with the first connecting tube (11) between suction funnel (14) and bottle,suction (8)
(10), the output end of electronic balance (6) is connected with computer (16).
2. automation sludge specific resistance measurement device according to claim 1, it is characterised in that described suction funnel (14)
Including base (15) and funnel body (18), on base (15), porous support plate (19) is horizontally set on funnel body (18)
In the top of funnel body (18), the upper oral part of funnel body (18) is equipped with extending (22) through buckle (21), forms reassembling type
Sludge contain structure.
3. automation sludge specific resistance measurement device according to claim 1, it is characterised in that described closed experimental box
(1) the first connecting tube (11), the second connecting tube (9) and suction filtration pipeline (23) in are fixed by neck (12).
4. automation sludge specific resistance measurement device according to claim 1, it is characterised in that described electronic balance (6)
It is placed on electronic balance mounting table (5).
5. automation sludge specific resistance measurement device according to claim 1, it is characterised in that described intermediate buffering bottle
(3) it is fixed on buffering bottle base (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720558687.XU CN206725377U (en) | 2017-05-19 | 2017-05-19 | One kind automation sludge specific resistance measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558687.XU CN206725377U (en) | 2017-05-19 | 2017-05-19 | One kind automation sludge specific resistance measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990017A (en) * | 2017-05-19 | 2017-07-28 | 河南工程学院 | Automate sludge specific resistance measurement device and assay method |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990017A (en) * | 2017-05-19 | 2017-07-28 | 河南工程学院 | Automate sludge specific resistance measurement device and assay method |
| CN106990017B (en) * | 2017-05-19 | 2023-04-07 | 河南工程学院 | Automatic sludge specific resistance measuring device and measuring method |
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Granted publication date: 20171208 Termination date: 20200519 |