CN203108448U - Device for quickly measuring membrane operation flux - Google Patents
Device for quickly measuring membrane operation flux Download PDFInfo
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- CN203108448U CN203108448U CN 201320075429 CN201320075429U CN203108448U CN 203108448 U CN203108448 U CN 203108448U CN 201320075429 CN201320075429 CN 201320075429 CN 201320075429 U CN201320075429 U CN 201320075429U CN 203108448 U CN203108448 U CN 203108448U
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- pipeline
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Abstract
The utility model discloses a device for quickly measuring the membrane operation flux, which comprises a box body, wherein a container for accommodating a mixed sludge liquid for simulating an operation environment is arranged in the box body; a membrane module and an aerator pipeline are arranged in the container; the aerator pipeline is connected with an air compressor used for supplying an air source; a clear water outlet of the membrane module is connected to a measuring cup via a pipeline; a digital display negative pressure meter, a digital display peristaltic pump and an intelligent timer are arranged on the pipeline, and are all controlled and recorded by an automatic control circuit via a microcomputer; and selective switches respectively corresponding to a first test phase parameter list, a second test phase parameter list and a third test phase parameter list are arranged on the microcomputer. The device can measure the operation flux consistent with an actual process condition within a short-time period.
Description
Technical field
The utility model relates to the MBR film and pollutes the control field, relates in particular to the tools for measurement of MBR membrane module operational factor and performance parameter.
Background technology
Membrane bioreactor (MBR) is a kind of novel sewage treatment process of activated sludge process and membrane separation technique be combined into, and this technology has obtained to develop rapidly in recent years.At present, the main method that controlling diaphragm bioreactor (MBR) film pollutes comprise feed liquid preliminary treatment, operating condition optimization and change measure such as membrane module structure, wherein selecting the flow-shape etc. on suitable membrane flux and the control face is the main method of optimizing operating condition.
The concept of critical flux is proposed in nineteen ninety-five by Field the earliest.Howell etc. sum up it, and critical flux hypothesis is expressed as follows: when the permeation flux subcritical flux of film, the speed that the boundary layer of film forms filter cake is zero, and the filtration resistance of film is not in time or the change of transmembrane pressure and changing; When the permeation flux of film during greater than critical flux, the boundary layer of film will form filter cake step by step, the prolongation that the filtration resistance of film is asked at any time or the increase of transmembrane pressure and increase.When the MBR critical flux namely kept a constant membrane flux to be lower than this value operation, mud granule can not be in film surface aggregation deposition, and it is stable that operating pressure keeps, and do not have significant film to pollute and produce; And when the controlling diaphragm flux was higher than this value operation, operating pressure sharply raise, and film pollutes thereupon and rises rapidly, causes the collapse of MBR system.So-called subcritical flux operation is exactly under certain operating condition, and it is following to obtain the stable operation of MBR to make membrane flux maintain critical flux.
At present general the requirement to keep the stability of system, keeps higher water yield in the operation of subcritical district on the one hand as far as possible in the MBR technology, and the ratio that cuts down the consumption of energy also needs the operating flux of avoiding high on the other hand, further the increasing the weight of of pollution.Whether select the membrane flux in subcritical district really proper, need actual motion to verify, the time cycle is longer.Weigh a major parameter pure water flux of membrane module in addition, little with size, the film pollution characteristic relation of critical flux in the actual motion environment, therefore need find a reasonable parameter to characterize, weigh the difference of different membrane modules.
So, determine that operating flux and the critical flux in the MBR actual process is significant.Therefore, need a kind of device that can measure the film operating flux fast badly.
At the prior art above shortcomings, the utility model is proposed.
The utility model content
In view of problems of the prior art, the utility model provides a kind of device that can measure the film operating flux fast.
For realizing above-mentioned utility model purpose, the technical scheme that the utility model provides is: a kind of device of quick mensuration film operating flux, comprise a casing, be provided with a container that holds the mud mixed liquid that simulated the test run environment in the casing, be placed with membrane module in the apparatus container, the clear water output of membrane module is connected to measuring cup by pipeline, pipeline is provided with digital display vacuum table and digital display peristaltic pump and intelligent timing device, by microcomputer control and record data, microcomputer is provided with the selector switch corresponding first test phase parameter list respectively by automatic control circuit for digital display vacuum table and digital display peristaltic pump and intelligent timing device, the second parameter testing phase table and the 3rd test phase parameter list.
The bottom of the membrane module of described apparatus container also is provided with aeration tube, and aeration tube is connected with casing air compressor machine outward.
The beneficial effects of the utility model are: the utility model can be measured the operating flux data of coincideing with the actual process condition in cycle short period.The adjustment period of being particularly useful for process conditions, can determine the film pollution tendencies according to the variation of operating flux and critical flux.Be not only applicable to laboratory condition, be applicable to same process condition pilot-plant yet, especially can select the simulation test liquid close with mud mixed liquid character that the film applicability is made judgement at uncertain working condition, provide reference value to engineering.Apparatus integration can be surveyed the decay of critical flux and flux, operating flux simultaneously, and method of testing fast, simply.
Description of drawings
When considered in conjunction with the accompanying drawings, by the reference following detailed, can more completely understand the utility model better and learn wherein many attendant advantages easily, but accompanying drawing described herein is used to provide further understanding of the present utility model, constitute a part of the present utility model, illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not constitute to improper restriction of the present utility model, wherein:
Fig. 1 is general structure schematic diagram of the present utility model;
Fig. 2 is the connection diagram of the determinator among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
Fig. 1 is general structure schematic diagram of the present utility model, and Fig. 2 is the connection diagram of the determinator among Fig. 1.As Fig. 1, illustrated in fig. 2, the device of a kind of quick mensuration film operating flux of the present utility model, comprise a casing 7, be provided with an apparatus container 1 that holds the mud mixed liquid 3 of tested running environment in the casing 7, be placed with membrane module 2 in the apparatus container 1, the clear water output of membrane module 2 is connected to measuring cup 6 by pipeline 8, pipeline 8 is provided with digital display vacuum table 4 and digital display peristaltic pump 5 and intelligent timing device 9, by microcomputer 10 control and record data, microcomputer 10 is provided with the selector switch corresponding first test phase parameter list 11 respectively by automatic control circuit for digital display vacuum table 4 and digital display peristaltic pump 5 and intelligent timing device 9, the second parameter testing phase table 12 and the 3rd test phase parameter list 13.The bottom of the membrane module 3 of apparatus container 1 also is provided with aeration tube 14, and aeration tube 14 is connected with casing 7 air compressor machine 15 outward.
The concrete use of the utility model is described below:
At first enchashment field mud mixed liquid 3 is placed on 1 li of apparatus container as running environment, and suitable membrane module 2 loadings of the size ratio that will prepare to have made are fixed and are immersed in the mud mixed liquid 3, apparatus container 1 bottom is provided with aeration tube 14, and have air compressor machine 15 that source of the gas is provided, mix up aeration intensity.
Selector switch A, first test phase is measured the critical flux of film, parameter list 11 needs to set response time t1, peristaltic pump initial speed R1, the rotating speed r that increases behind certain response time t1, set initial speed R1=3rpm as peristaltic pump, response time t1=15min, can record pressure value automatically every 3min, peristaltic pump can increase rotating speed r=0.2rpm automatically behind the 15min, to improve flux, the initial flux (can draw by water yield and membrane module area in the metering 1-3min) when measuring every 15min can stop when obviously fluctuation appears in force value.
Selector switch B, second test phase is measured the flux decay and is reached the used time of platform, the certain hour of namely being separated by is measured the flux of membrane module in solution, the total time that the continuous amount of flux of measuring more than 3 times almost no longer changes is long, parameter list 12 needs to set the blanking time that response time t2(measures flux), with the negative pressure value under the negative pressure value P2(constant-pressure conditions), the rotating speed of correspondence under the peristaltic pump initial speed R2(P2 condition), as response time t2=10min, negative pressure value P2=20kPa, when force value〉P2(20kPa) time, system can adjust the rotating speed that reduces pump automatically, keeps negative pressure value stable when 20kPa, measure a flux every 10min, when the continuous flux of measuring more than 3 times no longer changed, record continued total time T, can stop.
Selector switch C, the 3rd test phase is measured the membrane module operating flux, parameter list 13 needs to set the lasting total time T that response time t3(size is second test phase), the rotating speed of peristaltic pump initial speed R3(correspondence during less than the first test phase critical flux 2-5LMH), the force value of correspondence under the negative pressure value P3(peristaltic pump rotating speed R3), pressure reduction dynamic variable quantity △ P, as: peristaltic pump initial speed R3=15.2rpm, negative pressure value P3=6kPa, when pressure reduction △ P=1kPa, peristaltic pump is out of service automatically, and physics cleans or use identical New Parent to need to carry out completely to assembly, and the adjustment rotating speed, begin the test in new cycle.Measure and record the flux of each cycle correspondence when initial.If in the time, device does not have out of service at t3, the flux data of measuring is the operating flux data that need.
Example 1:
Comparative film assembly 1: sludge concentration 5-6g/L, aeration intensity 120m3/m2h;
Comparative film assembly 2: sludge concentration 9-10g/L, aeration intensity 120m3/m2h;
Comparative film assembly 3: sludge concentration 5-6g/L, aeration intensity 90m3/m2h.
3 membrane modules, identical influent quality condition, the same film assembly, all are 5.5m2, mensuration operating flux and critical flux ratio are 45%, 42%, 40% under this device condition of laboratory respectively, measure pilot plant conditions lower critical flux in addition and are respectively 56LMH, 53LMH, 50LMH, are respectively 25LMH, 22LMH, 20LMH thereby draw operating flux, moving for 8 weeks continuously, pressure changing such as table 1 under the condition separately:
Table 1
From Monitoring Data, assembly 1, assembly 2, assembly 3 move under the operating flux that correspondence is measured, except assembly 3 raises slightly soon, assembly 1, assembly 2 all keep normal pressure rising amplitude in the cycle of operation, can draw, more identical by operating flux and actual working conditions that this method is measured, certain service data reliably can be provided.
Example 2:
In the simulation test liquid: the dried mud particle of 5g/L (particle diameter is less than 200 orders)+bovine serum albumin 90mg/L+ sodium humate 60mg/L+ sodium alginate 120mg/L+ calcium chloride 500mg/L, aeration intensity 120m3/m2h, small-sized column-type film components, assembly 4: belt material film, external diameter 2.5mm, assembly 5:BSY is the belt material film not, external diameter 2mm, assembly all is 5 rhizoids, effectively long 30cm.Through in this device of laboratory, measuring, the critical flux of assembly 4, assembly 5 is respectively 33LMH, 31LMH in simulation test liquid, operating flux is 14.5LMH, 15.8LMH, be that operating flux and critical flux ratio are 44%, 51%, select under the same conditions to use assembly 5 more suitable, operating flux is big, under identical flux, than anti-pollution.Following in pilot-plant, the I type curtain type membrane of two kinds of films of use, mud mixed liquid MLSS7-8g/L, aeration intensity 100m3/m2h, continuous 4 all service datas under the operating flux 16LMH.
The result finds out from service data, and assembly 4 average pressure climbings are 1kPa/W, and assembly 5 average pressure climbings are 0.5kPa/W, and the stain resistance outline is poor.According to simulation test liquid and operating flux result, be conducive to the stain resistance of the different membrane modules of comparison, targetedly selective membrane.
The above embodiment; it is preferred embodiment of the present utility model; be not to limit the utility model practical range; so it is all according to the described apparent change of the utility model claim; and other does not break away from the change of the utility model essence, all should be included within the protection domain of the present utility model.
Claims (2)
1. device of measuring fast the film operating flux, it is characterized in that, comprise a casing, be provided with a container that holds the mud mixed liquid of dry run environment in the casing, be placed with membrane module in the apparatus container, the clear water output of membrane module is connected to measuring cup by pipeline, pipeline is provided with digital display vacuum table and digital display peristaltic pump and intelligent timing device, by microcomputer control and record data, microcomputer is provided with the selector switch corresponding first test phase parameter list respectively by automatic control circuit for digital display vacuum table and digital display peristaltic pump and intelligent timing device, the second parameter testing phase table and the 3rd test phase parameter list.
2. the device of a kind of quick mensuration film operating flux according to claim 1 is characterized in that, the bottom of the membrane module of described apparatus container also is provided with aeration tube, and aeration tube is connected with casing air compressor machine outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075429 CN203108448U (en) | 2013-02-18 | 2013-02-18 | Device for quickly measuring membrane operation flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075429 CN203108448U (en) | 2013-02-18 | 2013-02-18 | Device for quickly measuring membrane operation flux |
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| CN203108448U true CN203108448U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320075429 Expired - Lifetime CN203108448U (en) | 2013-02-18 | 2013-02-18 | Device for quickly measuring membrane operation flux |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623706A (en) * | 2013-11-20 | 2014-03-12 | 株洲时代新材料科技股份有限公司 | Device for detecting flat filtering membrane element |
| CN109589798A (en) * | 2018-12-12 | 2019-04-09 | 南方科技大学 | Method and apparatus for measuring threshold flux of separation membrane |
-
2013
- 2013-02-18 CN CN 201320075429 patent/CN203108448U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623706A (en) * | 2013-11-20 | 2014-03-12 | 株洲时代新材料科技股份有限公司 | Device for detecting flat filtering membrane element |
| CN103623706B (en) * | 2013-11-20 | 2015-08-12 | 株洲时代新材料科技股份有限公司 | For the checkout gear of flat panel filter membrane component |
| CN109589798A (en) * | 2018-12-12 | 2019-04-09 | 南方科技大学 | Method and apparatus for measuring threshold flux of separation membrane |
| CN109589798B (en) * | 2018-12-12 | 2021-05-25 | 南方科技大学 | Method and apparatus for measuring threshold flux of separation membrane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |