CN102133493A - Device of detecting and analyzing membrane filtration program on line - Google Patents
Device of detecting and analyzing membrane filtration program on line Download PDFInfo
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- CN102133493A CN102133493A CN2010101116312A CN201010111631A CN102133493A CN 102133493 A CN102133493 A CN 102133493A CN 2010101116312 A CN2010101116312 A CN 2010101116312A CN 201010111631 A CN201010111631 A CN 201010111631A CN 102133493 A CN102133493 A CN 102133493A
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Abstract
The invention relates to a device of detecting and analyzing a membrane filtration program on line. The device comprises a light sensing device, a driving device and an information processing device, wherein the light sensing device comprises a plurality of sensing elements which are linearly arranged to form a first sequence; the light sensing device is used for measuring signal information of variation in the thickness of a filter cake on a linear position of a filter membrane; the driving device is used for driving the light sensing device to relatively move parallel to the filter membrane above the filter cake so that the variation in the thickness of the filter cake on at least one local plane of the filter membrane can be measured by utilizing the light sensing device; and the information processing device is connected with the light sensing device and is used for continuously processing the signal information sensed by the light sensing device and then immediately estimating the variation in the thickness of the filter cake on at least one local plane of the filter membrane in a filter program.
Description
Technical field
The present invention relates to a kind of filter cake thickness measuring equipment of growing up at the filter cake that is generated in the filtration system (cake), particularly relating to a kind of light sensing apparatus that utilizes cooperates drive unit to be applied in the filtration system to reach the device of the filter cake of original position (in situ) measurement immediately growth thickness, i.e. detecting and analytical equipment on the line of membrane filtration program.
Background technology
In filter, when the solid constituent diameter in the mud (slurry) when being big than the hole diameter of filtration membrane (filtermedium), then behind the filtration cycle several, promptly have one deck filter cake (cake) to generate gradually on the filtration membrane surface, its thickness can increase along with the time.Filter cake is thick more, and the obstruction of filtering slurry is big more and make filtering velocity slow more.So need the filter cake on the filtration membrane is removed, yet be difficult to usually remove all filter cakes fully, still some remains on the filtration membrane.If continue to use aforesaid filtration membrane to carry out filter again, the filter cake thickness distributional difference that is generated will continue to increase, this will make the flow regime of mud become unstable, and the rerum natura of filter cakes such as viscosity, porosity also becomes more inhomogeneous, therefore, distribute understanding its rerum natura if can measure the filter cake thickness on filtration membrane surface this moment, can when measuring, carry out the back washing program, to promote the efficient of filtering to certain filter cake thickness.And on fields such as waste gas filtering, filtering slurry or high technology ceramics industry, so the method for measurement that distributes at filter cake thickness more seems important.
Present known measurement filter cake thickness technology can be divided into two classes haply: (1) destructive measuring method: take out filter cake from filtration membrane, making of processing is easy to measure, that is destroys the original structure of filter cake, can't record filter immediately and carry out the method for filter cake thickness at that time; (2) non-destroyed measurement method: directly measure the filter cake thickness that in filter, forms, do not disturb the formation of filter cake, do not destroy the structure of filter cake, that is the expression filter carries out the actual thickness of filter cake at that time.
The destructive modes such as comprising oven dry weighing, freezing microtome section and filter cake reconstruction of measuring.There is document to disclose and on filter cake, selects access point, analysis is by plastidogenetic filter cake internal protein composition, to estimate the cell number of per unit filter cake volume, the shape of setting cell and porosity value are to calculate filter cake thickness in advance, confirm this measuring method with microscope microcosmic scanning Yeast and cell again, but do not report its comparative result, this method is quite complicated and easily produce error (Riesmeier, B., K.H.Kroner, andM.R.Kula, Studies on secondarylayer formation and itscharacterization duringcross-flow filtration of microbial cells, J.Membr.Sci., Vol.34, pp.245,1987).The research document that freezing method is also arranged is then with thickness and the porosity (Schmidt of the freezing back of filter cake with the microscopic examination filter cake, E.andF.Loffeler, Preparation of dust cakes for microscopic examination, PowderTechnol., Vol.60, pp.173,1990).In addition, also have document to propose a kind of measurement filter cake thickness, the destructive method for measurement of porosity, the cake solids composition that taking-up forms on the tubulose filter material, with surface filtration mode (constant pressure filtration) filter cake of under same operating condition, remaking, measure its thickness with as the filter cake thickness (Vyas in the tubular filter film, H.K., A.J.Mawson, R.J.Bennett, A.D.Marshall, A new method forestimating cake heightand porosity duringcrossflow filtration of particulate suspensions, J.Membr.Sci.Vol.176, pp.113-119,2000).
And the non-destructive measuring method has also developed at present and many kinds, mostly is to utilize emission light wave, sound wave etc., by the physical property of the power definition filter cake of back wave.1973 Christian eras United States Patent (USP) the 3rd, 748, expose the filter cake thickness measuring method of filter (being the filter chamber) in a kind of subsider for No. 263, for with the vertically superposed placement of filter, the mud that flows into is divided into filter cake and filtrate, filter cake forms on the filter surface, filtrate then flow to feeder by the tributary, when filter cake thickness reaches predetermined maximum constraints, it can make the water channel of the filter of flowing through block, be viewed as clarification and see through glass by the filtrate that flow out in the filter tributary, in this expression subsider the filter cake thickness of filter has reached maximum ga(u)ge known, that set.And 1974 Christian eras United States Patent (USP) the 3rd, 815, No. 745 then for describing a kind of instrument of measuring thickness, washing degree and the degree of drying of filter cake in the filter, filtrate, cleaning solution and dry gas are imported filter by manifold, wherein comprising a detecting element places between manifold and the filter inlet, and another detecting element is placed in the filter, difference by two detecting element signals is measured filter cake thickness, and washing degree and degree of drying are also measured with similar methods, in order to thickness, washing degree and the degree of drying of control filter cake.In addition, at United States Patent (USP) 4 in 1985 Christian eras, 548, then demonstrate a kind of instrument that is used for simulating hydrodynamic when digging well for No. 080, provide a detecting element to include ultrasonic unit, can send and receive ultrasonic wave, this detecting element is elongated rod shape, surround the cylindrical cover of porous every a segment distance, the filter cake that is made of mud forms in porous cylinder cover inboard, and this detecting element can outwards radiate ultrasonic wave, get to the filter cake surface when ultrasonic wave and can reflex to detecting element again, this interlude is noted down by receiver, measures the filter cake thickness of mud by this, uses the flow velocity of keeping the filter cake of flowing through again.There is document to propose a kind of method in addition, utilize tasselled shape beam projector on filter cake, to move its light beam, cooperate the record of CCD digital camera at incident point vertical axis and filtration membrane, the intersection point on filter cake surface is to the differential seat angle of beam projector, distribute with this apparent height that calculates filter cake, calculate the back by computer again and show its stereopsis (Dittler, A., B.Gutmann, R.Lichtenberger, H.Weberand G.Kasper, Opticalinsitu measurment of dust cakethicknessdistributions on rigid filter media forgascleaning, PowderTechnology, Vol, 99, pp, 177-184,1998).Moreover, also there is document to disclose a kind of method for measurement, mat is hyperacoustic to be dispersed and principle of reflection measures wherein interlude again via the thickness that obtains filter cake in the high technology ceramics processing procedure after converting, right this method can be disturbed the formation of filter cake or destroy structure (Hutchins, D.A.and H.D.Mair, the Ultrasonic monitoring of slip-castceramics of filter cake, J.Materials science Letters, Vol.8, pp.1185,1989).
Measure filter cake thickness with destructive mensuration and can't learn that filter carries out filter cake thickness at that time, thus can not adjust to filter immediately, and in oven dry, freezing and can change the original structure of filter cake when rebuilding filter cake.On the other hand, use aforesaid non-destructive filter cake thickness measuring method that the instrument costliness is arranged not only, measure that complicated, consuming time but also the easy generation experiment or the error of calculation are converted in the back, the wavelength that is emitted to filter cake can destroy problems such as filter cake forming process or formation structure.
In above-mentioned background of invention,, the invention provides detecting and analytical equipment on a kind of line of membrane filtration program in order to meet the requirement on the industry.
This shows that above-mentioned existing membrane filtration device obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found detecting and analytical equipment on a kind of line of novel membrane filtration program, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing membrane filtration device exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of detecting and analytical equipment on the line of founding a kind of novel membrane filtration program, can improve general existing membrane filtration device, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing membrane filtration device exists, and detecting and analytical equipment on a kind of line of novel membrane filtration program be provided, technical problem to be solved is to make it can measure filter cake immediately to form thickness, and can not damage the detecting and the analytical equipment of filter cake texture, be very suitable for practicality.
Another object of the present invention is to, detecting and analytical equipment on a kind of line of novel membrane filtration program of new structure is provided, technical problem to be solved is to make it use the optical technology that original position (in situ) is measured, its low price, be easy to install and degree of accuracy height, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.Detecting and analytical equipment on the line of a kind of membrane filtration program that proposes according to the present invention, be used in the filtration system, this filtration system has a filter, a filtration membrane and by the filter thing, this filter is carried out a filter and the deposit thickness that has a filter cake on this filtration membrane changes, and wherein this detecting and analytical equipment comprise:
One light sensing apparatus, this light sensing apparatus comprise a plurality of sensing element line styles and are arranged in one first sequence, and this light sensing apparatus is in order to measure a signal information of this filtration membrane filter cake varied in thickness on a line style position;
One drive unit carries out and parallel the relatively moving of this filtration membrane in this filter cake top in order to drive this light sensing apparatus, so that this light sensing apparatus is measured this filtration membrane filter cake varied in thickness at least one part plan; And
One information processor is connected in this light sensing apparatus, this signal information that is sensed in order to this light sensing apparatus of Treatment Analysis continuously, and then estimate out in this filter the variation of this filtration membrane filter cake thickness at least one part plan immediately.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said light sensing apparatus more comprises at least one second sequence, this second sequence is arranged by a plurality of sensing element line styles and is formed, be parallel to each other between this first sequence and this second sequence, and a plurality of sensing elements and a plurality of sensing elements of this second sequence are staggered in this first sequence.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, each sensing element distance to each other is more than or equal to 30mm in the wherein said light sensing apparatus.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said sensing element comprises an Optical Transmit Unit and a light is accepted the unit, this light emitting units emitting one light wave, this light wave contact this filter cake reflection and produce a reflecting light, and this light is accepted the unit and accepted this reflecting light.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said Optical Transmit Unit is light-emittingdiode (LED), and it is photoelectric crystal that this light is accepted the unit, and this light wave is an infrared light.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said light sensing apparatus can change into this signal information by an analogy digital quantizer (AD/DA converter) can be for the numerical value of this information handling systems utilizing analysis.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said filtration system is a thin-film bioreactor, this thin-film bioreactor has a plurality of filters that are parallel to each other, each filter coats by at least one this filtration membrane, and this thin-film bioreactor is carried out this filter and the deposit thickness that has a filter cake on each this filtration membrane changes.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said drive unit is except carrying out and parallel the relatively moving of this filtration membrane in this filter cake top in order to drive this light sensing apparatus, and drives this light sensing apparatus and move between a plurality of these filters that are parallel to each other.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, the contained sensing element of wherein said light sensing apparatus is two-sided arrangement, in order to measure the filter cake thickness on the adjacent filter simultaneously.
Detecting and analytical equipment on the line of aforesaid membrane filtration program, wherein said light sensing apparatus move mode between a plurality of these filters that are parallel to each other is a continuous S-shaped.
The present invention compared with prior art has tangible advantage and beneficial effect.As known from the above, for achieving the above object, the invention provides detecting and analytical equipment on a kind of line of membrane filtration program, be used in the filtration system, filtration system has a filter, one filtration membrane and one is by the filter thing, filter is carried out a filter and the deposit thickness that has a filter cake on filtration membrane changes, wherein detecting comprises with analytical equipment: a light sensing apparatus, light sensing apparatus comprises a plurality of sensing element line styles and is arranged in one first sequence, and light sensing apparatus is in order to measure a signal information of filtration membrane filter cake varied in thickness on a line style position; One drive unit carries out relatively move parallel with filtration membrane in order to drive light sensing apparatus in the filter cake top, so that light sensing apparatus is measured filtration membrane filter cake varied in thickness at least one part plan; And an information processor, be connected in light sensing apparatus, the signal information that is sensed in order to Treatment Analysis light sensing apparatus continuously, and then estimate out in filter the variation of filtration membrane filter cake thickness at least one part plan immediately.
The present invention discloses detecting and analytical equipment on a kind of line of membrane filtration program, be used in the thin-film bioreactor, thin-film bioreactor has a plurality of filters that are parallel to each other and by the filter thing, each filter coats by at least one filtration membrane, thin-film bioreactor is carried out a filter and the deposit thickness that has a filter cake on each filtration membrane changes, wherein detecting comprises with analytical equipment: a light sensing apparatus, light sensing apparatus comprises a plurality of sensing element line styles and is arranged in one first sequence, and light sensing apparatus is in order to measure a signal information of filter cake varied in thickness on the filtration membrane; One drive unit carry out relatively move parallel with filtration membrane in order to drive light sensing apparatus in the filter cake top, and drive unit driving light sensing apparatus moves between a plurality of filters that are parallel to each other; And an information processor, be connected in light sensing apparatus, the signal information that is sensed in order to Treatment Analysis light sensing apparatus continuously, and then estimate out in filter all variations of planes filter cake thickness on the filtration membrane of at least 1 filter immediately.
By technique scheme, detecting has following advantage and beneficial effect at least with analytical equipment on the line of membrane filtration program of the present invention:
1, the present invention can measure filter cake immediately and form thickness, and can not damage the detecting and the analytical equipment of filter cake texture, is very suitable for practicality.
2, the present invention uses the optical technology that original position (in situ) is measured, and its low price is easy to install and degree of accuracy height, thereby is suitable for practicality more.
In sum, the invention relates to detecting and analytical equipment on a kind of line of membrane filtration program, it comprises: a light sensing apparatus, light sensing apparatus comprises a plurality of sensing element line styles and is arranged in one first sequence, and light sensing apparatus is in order to measure a signal information of filtration membrane filter cake varied in thickness on a line style position; One drive unit carries out relatively move parallel with filtration membrane in order to drive light sensing apparatus in the filter cake top, so that light sensing apparatus is measured filtration membrane filter cake varied in thickness at least one part plan; And an information processor, be connected in light sensing apparatus, the signal information that is sensed in order to Treatment Analysis light sensing apparatus continuously, and then estimate out in filter the variation of filtration membrane filter cake thickness at least one part plan immediately.The present invention has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram of detecting and analytical equipment on the line of a kind of membrane filtration program of first embodiment of the invention.
Fig. 2 is the schematic diagram of a kind of light sensing apparatus of first embodiment of the invention.
Fig. 3 is the schematic diagram of the light sensing apparatus of a kind of tool protective device of first embodiment of the invention.
Fig. 4 is the schematic diagram of detecting and analytical equipment on the line of a kind of membrane filtration program of second embodiment of the invention, is used in a thin-film bioreactor.
Fig. 5 is the schematic diagram of a kind of light sensing apparatus of second embodiment of the invention.
Fig. 6 is the schematic diagram of the another kind of light sensing apparatus of second embodiment of the invention.
Fig. 7 is the schematic diagram of detecting and analytical equipment on the line of the another kind of membrane filtration program of second embodiment of the invention.
Fig. 8 is to be the schematic diagram of the light sensing apparatus of a kind of tool protective device of second embodiment of the invention.
Fig. 9 is the probe error correction figure of example one of the present invention.
Figure 10 is the probe signals disturbed test figure that example two contiguous probes of the present invention are arranged with the spacing of 0.5cm to each other.
Figure 11 is that example two of the present invention is adjusted the contiguous probe probe signals disturbed test figure of distance to each other.
Figure 12 is that single probe of example three of the present invention carries out film surface cake layer analysis chart.
Figure 13 is that many probes of example four of the present invention carry out the cake layer structural analysis of film surface.
2: the second sequences of 1: the first sequence
100: detecting and analytical equipment on the line of membrane filtration program
110: light sensing apparatus
112: sensing element 1122: Optical Transmit Unit
1124: accept unit 120: drive unit
130: information processor 140: the acrylic resin protective device
200: filtration system 210: filter
220: filtration membrane 230: filtered thing
240: filter cake
300: detecting and analytical equipment on the line of membrane filtration program
310: light sensing apparatus 312: sensing element
3122: transmitter unit 3124: light is accepted the unit
320: drive unit 330: information processor
340: the acrylic resin protective device
400: thin-film bioreactor
410: filter 420: filtration membrane
430: filtered thing 440: filter cake
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, detecting and its specific embodiment of analytical equipment, structure, feature and effect thereof on the line of the membrane filtration program that foundation the present invention is proposed, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.For convenience of description, in following embodiment, components identical is represented with identical numbering.
The present invention discloses detecting and analytical equipment on a kind of line of membrane filtration program at this.In order to understand the present invention up hill and dale, detailed step and composition thereof will be proposed in following description.Apparently, execution of the present invention is not defined in the specific details that skill person had the knack of in this field.On the other hand, well-known composition or step are not described in the details, with the restriction of avoiding causing the present invention unnecessary.Preferred embodiment meeting of the present invention is described in detail as follows, yet except these were described in detail, the present invention can also be implemented among other the embodiment widely, and scope of the present invention do not limited, its with after claim be as the criterion.
Consult shown in Figure 1, the first embodiment of the present invention discloses detecting and analytical equipment 100 on a kind of line of membrane filtration program, be used for filtration system 200, above-mentioned filtration system 200 can flow through filtering system or submerged membrane bioreactor (submerged membrane bioreactor for sweeping, SMBR), have a filter 210, a filtration membrane 220 and one by filter thing 230, and filter 200 is carried out filters and the deposit thickness that has a filter cake 240 on filtration membrane 220 changes.
Above-mentioned detecting and analytical equipment 100 comprise: a light sensing apparatus 110, a drive unit 120 and an information processor 130.Above-mentioned light sensing apparatus 110 comprises a plurality of sensing element 112 line styles and is arranged in one first sequence, light sensing apparatus 110 is in order to measuring a signal information of filtration membrane 220 filter cake 240 varied in thickness on a line style position, and light sensing apparatus 110 is less than or equal to 5mm apart from the measuring distance of filtration membrane 220.Above-mentioned drive unit 120 carries out in filter cake 240 tops and filtration membrane 220 parallel relatively moving in order to drive light sensing apparatus 110, so that light sensing apparatus 110 is measured filtration membrane 220 filter cake 240 varied in thickness at least one part plan, and drive unit 120 more can comprise a stepper motor.Above-mentioned information processor 130 is connected in light sensing apparatus 110, the signal information that is sensed in order to Treatment Analysis light sensing apparatus 110 continuously, and then estimate out in filter the variation of filtration membrane 220 filter cake thickness at least one part plan or filtration membrane 220 whole planes immediately.Above-mentioned be selected from one of following person: olefin(e) acid methyl esters (PMMA), calcium carbonate (CaCO by filter thing 230
3) and saccharomycete (Saccharomyces cerevisiae).Above-mentioned light sensing apparatus 110 can be by an analogy digital quantizer (AD/DA converter) but the signal information is changed into the numerical value that funding news treatment system is analyzed.
Consult shown in Figure 2, example in present embodiment, above-mentioned light sensing apparatus 110 more comprises at least one second sequence, 2, the second sequences to be arranged by a plurality of sensing element 112 line styles and forms, and in the light sensing apparatus 110 each sensing element 112 distance to each other more than or equal to 30mm.The preferably, first sequence 1 and 2 of second sequences are parallel to each other, and a plurality of sensing elements 112 and a plurality of sensing elements 112 of second sequence are staggered in first sequence 1, and in the light sensing apparatus each sensing element 112 distance to each other more than or equal to 30mm.
Consult shown in Figure 3ly, detecting coats light sensing apparatus 110 with the acrylic resin protective device 140 that analytical equipment 100 more comprises a printing opacity, uses to prevent sensing element 112 and filtered thing 230 and directly contact and corroded.Above-mentioned sensing element 112 comprises an Optical Transmit Unit 1122 and a light is accepted unit 1124, Optical Transmit Unit 1122 emissions one light wave, and 240 reflections of light wave contact filter cake produce a reflecting light, and light is accepted unit 1124 and is accepted reflecting light.In an example, above-mentioned Optical Transmit Unit 1122 is light-emittingdiode (LED), and above-mentioned light is accepted unit 1124 and is photoelectric crystal.Above-mentioned light wave is an infrared light.
Consult shown in Figure 4, the second embodiment of the present invention discloses detecting and analytical equipment 300 on a kind of line of membrane filtration program, be used in thin-film bioreactor 400, above-mentioned thin-film bioreactor 400 has a plurality of filters that are parallel to each other 410 and by filter thing 430, each filter 410 coats by at least one filtration membrane 420, and thin-film bioreactor 400 is carried out filters and the deposit thickness that has a filter cake 440 on each filtration membrane 420 changes.In addition, detecting comprises with analytical equipment 300: a light sensing apparatus 310, a drive unit 320 and an information processor 330.With reference to shown in Figure 5, above-mentioned light sensing apparatus 310 comprises a plurality of sensing element 312 line styles and is arranged in one first sequence, light sensing apparatus 310 is in order to measuring a signal information of filter cake 440 varied in thickness on the filtration membrane 420, and light sensing apparatus 310 is less than or equal to 5mm apart from the measuring distance of filtration membrane 420.Above-mentioned drive unit 320 carries out in filter cake 440 tops and filtration membrane 420 parallel relatively moving in order to drive light sensing apparatus 310, and drive unit 320 drives light sensing apparatus 310 and moves between a plurality of filters that are parallel to each other 410, and drive unit 320 more can comprise a stepper motor.
Above-mentioned information processor 330 is connected in light sensing apparatus 310, the signal information that is sensed in order to Treatment Analysis light sensing apparatus 310 continuously, and then estimate out in filter all variations of plane filter cake 440 thickness on the filtration membrane 420 of at least 1 filter 410 1 side immediately.Above-mentionedly be selected from one of following person: olefin(e) acid methyl esters (PMMA), calcium carbonate (CaCO by filter thing 430
3) and saccharomycete (Saccharomyces cerevisiae).Above-mentioned light sensing apparatus 310 can be by an analogy digital quantizer (AD/DA converter) but the signal information is changed into the numerical value that funding news treatment system is analyzed.
With reference to shown in Figure 6, above-mentioned light sensing apparatus 310 more comprises at least one second sequence, 2, the second sequences 2 to be arranged by a plurality of sensing element 312 line styles and forms, and in the light sensing apparatus 310 each sensing element 312 distance to each other more than or equal to 30mm.The preferably is parallel to each other between first sequence and second sequence, and a plurality of sensing elements 312 and a plurality of sensing elements 312 of second sequence are staggered in first sequence, and in the light sensing apparatus 310 each sensing element 312 distance to each other more than or equal to 30mm.With reference to shown in Figure 7, in an example, light sensing apparatus 310 contained sensing elements 312 are two-sided arrangement, in order to measure filter cake 440 thickness on the adjacent filter 410 simultaneously.Therefore, light sensing apparatus 310 move mode between a plurality of filters that are parallel to each other is a continuous S-shaped.
With reference to shown in Figure 8, the acrylic resin protective device 340 that above-mentioned detecting and analytical equipment 300 more comprise a printing opacity coats light sensing apparatus 310, uses to prevent sensing element 312 and directly contacted by filter thing 430 and corroded.Above-mentioned sensing element 312 comprises an Optical Transmit Unit 3122 and a light is accepted unit 3124, Optical Transmit Unit 3122 emissions one light wave, and 440 reflections of light wave contact filter cake produce a reflecting light, and light is accepted unit 3124 and is accepted reflecting light.In another example, above-mentioned Optical Transmit Unit 3122 is light-emittingdiode (LED), and above-mentioned light is accepted unit 3124 and is photoelectric crystal.Above-mentioned light wave is an infrared light.
Example one
Eight probes (the alleged light sensing apparatus of embodiment) are numbered 1 to 8 in regular turn, and utilize vernier scale to move and simulate cake layer growth situation, respectively at adjusting probe height with vernier scale in the air, and the result of voltage change under the record differing heights, after test finishes probe taken off and re-assembly, in this way every probe is repeated four tests, consult shown in Figure 9, this figure is numbering 1 probe (all the other 7 probe results are similar with numbering 1 probe result) test result figure, by display error is many between 5% to 10% as a result, when distance is in 5mm, the probe reaction slope of curve is bigger, when apart from when 5mm is above, be not suitable for as the measurement of fouling thickness because slope is too small, so the preferable measurement distance of probe and filter membrane material surface is below the 5mm.
Example two
Its principle of the light reflection element that uses in the experiment (the alleged sensing element of embodiment) is to reflect via object by the infrared light that light-emittingdiode (LED) is launched, receive reverberation by other end photoelectric crystal (photransistor) again, according to the intensity difference that receives, also there is varying strength at photoelectric crystal the two poles of the earth formed photoelectric current (photocurrent), via measuring this current strength, can know the luminous intensity ratio of sending and absorbing, judge the distance of determinand distance by this.But in experimentation, find, when a plurality of light reflection elements are closely arranged each other, receive the situation that reverberation that catoptrical photoelectric crystal receives neighbouring element easily and sent causes signal to disturb, thereby can't accurately measure actual voltage value.Situation for the mutual interference of test probe reverberation phase, use 8 probes to arrange with the spacing of 0.5cm to each other in the experiment, test probe position and voltage disturbance change situation, the result as shown in figure 10, the magnitude of voltage that can be found left and right sides probe by voltage change among the figure is lower, and the magnitude of voltage of mid portion is higher, and this is to cause the higher situation of magnitude of voltage because the light reflection element in the centre position can receive the catoptrical interference in the left and right sides simultaneously.
For of the influence of further test probe distance to each other to the voltage measured value, in experiment, move adjacent two probes and observe voltage with the variable in distance situation, the result as shown in figure 11, the initial voltage value of single probe is 1.01v in experiment, magnitude of voltage is elevated to 1.54v when adjacent two probe spacings are 5mm, this result shows that probe can be subjected to the interference of contiguous probe reflection light really, magnitude of voltage descends thereupon along with the distance between adjacent two probes is drawn back afterwards gradually, magnitude of voltage has reverted to 1.01v when two probes are separated into 30mm, learn by above experimental result, if should keep probe spacing as more than the 30mm when using many probes to measure simultaneously, reduce probe and produce error because of the mutual interference of reverberation phase.
Example three
Single probe is observed the situation that cake layer is piled up in the filter process, move single probe every 10 minutes control step motors in the experiment, from top to bottom inswept film material surface, utilize the situation that cake layer generates in the instant detecting submerged membrane bioreactor on this mode line, can be observed out in distance by the voltage response curve of Figure 12 is that the magnitude of voltage that records of 0cm to 2cm place is higher, this is because near the sheet frame top suction of bleeding point is stronger, therefore the particle bulk deposition is around air entry, along with the probe suction that moves down weakens, therefore the voltage that records also reduces gradually, but when distance during near the 16cm place, because the influence of gravitational settling, cause part particle precipitation to be piled up in the downside frame, therefore cause magnitude of voltage to increase slightly once again.Measured voltage change under the different time can be observed out the situation that cake layer was piled up gradually along with the time in by figure.
Example four
Number of probes is increased eight, carrying out film surface cake layer thickness simultaneously with eight probes measures, bleeding filter 23 after 0 minute, the from top to bottom inswept film material of control step motor traveling probe surface, with the probe arrangement position as X-axis, displacement as Y-axis, magnitude of voltage as the Z axle, to record data and be converted to the three-dimensional distribution map of 3D, its result as shown in figure 13.Higher by magnitude of voltage around can observing out above sheet frame air entry among the figure, this is representing should the formed cake layer thickness in zone higher, suction weakens gradually along with getting over down, therefore voltage also with minimizing, near the 17cm place, because the influence of gravitational settling, therefore the part build-up of particles is in the downside frame, so magnitude of voltage increases once again slightly.Show that by this experimental result the data conversion that many inswept film material of probe surfaces are captured is three-dimensional distribution map, can observe the cake layer distribution scenario more extensive and clearly.
Apparently, according to the description among the top embodiment, this creation has many corrections and difference.Therefore need be understood in the scope of its additional claim item, except above-mentioned detailed description, this creation can also be implemented in other embodiment widely.Above-mentioned is the preferred embodiment of this creation only, is not in order to limit the claim of this creation; All other do not break away from the equivalence of being finished under the spirit that this creation discloses and changes or modify, and all should be included in the following claim.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. detect and analytical equipment on the line of a membrane filtration program, be used in the filtration system, this filtration system has a filter, a filtration membrane and one by the filter thing, and this filter is carried out a filter and the deposit thickness that has a filter cake on this filtration membrane changes
It is characterized in that: wherein this detecting and analytical equipment comprise:
One light sensing apparatus, this light sensing apparatus comprise a plurality of sensing element line styles and are arranged in one first sequence, and this light sensing apparatus is in order to measure a signal information of this filtration membrane filter cake varied in thickness on a line style position;
One drive unit carries out and parallel the relatively moving of this filtration membrane in this filter cake top in order to drive this light sensing apparatus, so that this light sensing apparatus is measured this filtration membrane filter cake varied in thickness at least one part plan; And
One information processor is connected in this light sensing apparatus, this signal information that is sensed in order to this light sensing apparatus of Treatment Analysis continuously, and then estimate out in this filter the variation of this filtration membrane filter cake thickness at least one part plan immediately.
2. detecting and analytical equipment on the line of membrane filtration program according to claim 1, it is characterized in that wherein said light sensing apparatus more comprises at least one second sequence, this second sequence is arranged by a plurality of sensing element line styles and is formed, be parallel to each other between this first sequence and this second sequence, and a plurality of sensing elements and a plurality of sensing elements of this second sequence are staggered in this first sequence.
3. detecting and analytical equipment is characterized in that each sensing element distance to each other is more than or equal to 30mm in the wherein said light sensing apparatus on the line of membrane filtration program according to claim 1.
4. detecting and analytical equipment on the line of membrane filtration program according to claim 1, it is characterized in that wherein said sensing element comprises an Optical Transmit Unit and a light is accepted the unit, this light emitting units emitting one light wave, this light wave contacts this filter cake reflection and produces a reflecting light, and this light is accepted the unit and accepted this reflecting light.
5. detecting and analytical equipment is characterized in that wherein said Optical Transmit Unit is a light-emittingdiode on the line of membrane filtration program according to claim 1, and it is photoelectric crystal that this light is accepted the unit, and this light wave is an infrared light.
6. detecting and analytical equipment on the line of membrane filtration program according to claim 1 is characterized in that wherein said light sensing apparatus can change into this signal information the numerical value that can supply this information handling systems utilizing to analyze by an analogy digital quantizer.
7. detecting and analytical equipment on the line of membrane filtration program according to claim 1, it is characterized in that wherein said filtration system is a thin-film bioreactor, this thin-film bioreactor has a plurality of filters that are parallel to each other, each filter coats by at least one this filtration membrane, and this thin-film bioreactor is carried out this filter and the deposit thickness that has a filter cake on each this filtration membrane changes.
8. detecting and analytical equipment on the line of membrane filtration program according to claim 7, it is characterized in that wherein said drive unit except carrying out and parallel the relatively moving of this filtration membrane in this filter cake top, and drive this light sensing apparatus and between a plurality of these filters that are parallel to each other, move in order to drive this light sensing apparatus.
9. detecting and analytical equipment is characterized in that the contained sensing element of wherein said light sensing apparatus is two-sided arrangement, in order to measure the filter cake thickness on the adjacent filter simultaneously on the line of membrane filtration program according to claim 8.
10. detecting and analytical equipment is characterized in that wherein said light sensing apparatus move mode between a plurality of these filters that are parallel to each other is a continuous S-shaped on the line of membrane filtration program according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101116312A CN102133493A (en) | 2010-01-27 | 2010-01-27 | Device of detecting and analyzing membrane filtration program on line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101116312A CN102133493A (en) | 2010-01-27 | 2010-01-27 | Device of detecting and analyzing membrane filtration program on line |
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| CN102133493A true CN102133493A (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101116312A Pending CN102133493A (en) | 2010-01-27 | 2010-01-27 | Device of detecting and analyzing membrane filtration program on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121078A (en) * | 2017-05-12 | 2017-09-01 | 新疆维吾尔自治区计量测试研究院 | A kind of piston special comprehensive measuring system based on temperature, difference in height and rotating speed |
-
2010
- 2010-01-27 CN CN2010101116312A patent/CN102133493A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121078A (en) * | 2017-05-12 | 2017-09-01 | 新疆维吾尔自治区计量测试研究院 | A kind of piston special comprehensive measuring system based on temperature, difference in height and rotating speed |
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Application publication date: 20110727 |