CN102580533A - Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane - Google Patents
Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane Download PDFInfo
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- CN102580533A CN102580533A CN2012100381659A CN201210038165A CN102580533A CN 102580533 A CN102580533 A CN 102580533A CN 2012100381659 A CN2012100381659 A CN 2012100381659A CN 201210038165 A CN201210038165 A CN 201210038165A CN 102580533 A CN102580533 A CN 102580533A
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- 238000001914 filtration Methods 0.000 title claims abstract description 28
- 238000002474 experimental method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000012528 membrane Substances 0.000 title abstract description 19
- 238000001223 reverse osmosis Methods 0.000 title abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000012141 concentrate Substances 0.000 claims description 24
- 238000010992 reflux Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000009295 crossflow filtration Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 7
- 238000005374 membrane filtration Methods 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention discloses an experiment system and an experiment method for tangential filtration of a high pressure resistant flat reverse osmosis (RO) membrane. The experiment system comprises a material feeding pot, a pressure pump, a flat RO membrane filtration device, a storage pot, a pressure gauge, an adjustment valve and a safety valve. The experiment method comprises the following steps of: (1) arranging an RO membrane between a top plate and a base plate, and fastening the top plate and the base plate together through bolts; (2) connecting equipment; (3) keeping the safety valve closed and the adjustment valve opened, and starting the high-pressure pump; (4) gradually turning down the opening degree of the adjustment valve, so that the liquid feeding pressure of the flat RO membrane filtration device is raised until material liquid flowing through the membrane flows out; and (5) finishing collecting the filtered material liquid, stopping the pump, and opening the adjustment valve and the safety valve to release pressure. The experiment system is feasible in a laboratory and can bear high pressure required by tangential filtration of the flat RO membrane so as to finish an RO filtration experiment; and according to the experiment method, the pollution situation of the membrane in each filtration stage can be observed conveniently, and researches on a pollution control technology is facilitated.
Description
Technical field
The present invention relates to flat RO membrane filtration experimental provision; Relate in particular to a kind of experimental system of high pressure resistant flat RO film tangential flow filtration; Be the filtration system of feasible flat counter-infiltration (RO) film in laboratory, and a kind of at the experimental technique that is bearing completion counter-infiltration tangential flow filtration medium under the high pressure.
Background technology
At present, known RO film filter adopts rolled membrane module mostly, selects web-like RO film for use, and it is inserted in the high pressure resistant filter housing cylindraceous forms rolled membrane module.Rolled membrane module can only be accomplished the separating and filtering to medium owing to be enclosed in the filter housing, is unfavorable for studying at any time the generation that the situation of observing the film surface is come the controlling diaphragm pollution.Only after rolled membrane module is disassembled out, can get film and observe, but this means that membrane module scraps.Because the autonomy-oriented proportion of production of RO film product is quite low; Rolled membrane module (the especially film of special property on the research application) expensive; Many researchers can't the work of support membrane Pollution Study spending, this has also limited the development of China's membrane technology and membrane material.
Someone adopts the research of the small-sized rolled membrane module chamber of experimentizing, but still can't observe pollution situation on the film at any time.Also the someone adopts flat dead-end filtration device to carry out the filtration experiment of ultrafiltration under the low pressure, micro-filtration, and its defective has two.At first the dead-end filtration technology has been used by case history and has been eliminated, existing generally employing be tangential flow filtration to slow down the concentration polarization effect, do not conform to reality as if adopting dead-end filtration to carry out scientific research again; Secondly, existing flat ultrafiltration, micro-filtration filter generally are made of plastics, and its can only under low pressure make an experiment (maximum 0.5Mpa), the filtration of carrying out reverse osmosis membrane then needs the pressure condition of 1-2Mpa at least, and the obvious bearing capacity of this series products is not enough.
In addition, existing flat filter can't freely change and adjust the speed of filtration according to the intensity of pressure, brings a lot of inconvenience to experiment, also the accuracy of influence experiment.
Summary of the invention
Above-mentioned deficiency to the prior art existence; The object of the invention just is to provide a kind of experimental system of high pressure resistant flat RO film tangential flow filtration; Be a kind of experimental system that can bear RO flat sheet membrane tangential flow filtration required high pressure feasible in the laboratory, this system has comprised the required equipment of high-pressure filteration, can bear high pressure and accomplish the osmosis filtration test; Also can easily observe pollution condition on each stage film of filtration according to this experimental technique, make things convenient for the research of pollution control technology.
Another object of the present invention also is to improve a kind of experimental technique of high pressure resistant flat RO film tangential flow filtration.
To achieve these goals, the technical scheme of the present invention's employing is such: a kind of experimental system of high pressure resistant flat RO film tangential flow filtration comprises:
Head tank is used to hold feed liquid;
Compression pump; Be located between head tank and the flat RO film filter; Its two ends link to each other with flat RO film filter with head tank through pipeline, the feed liquid in the head tank is delivered to flat RO film filter, provide filtration experiment required high pressure simultaneously;
Flat RO film filter is used for separating the material of feed liquid, and the separating liquid that will obtain after will filtering; See through liquid and be delivered to the holding vessel storage through pipeline, concentrate is through the defeated head tank that is back to of reflux line;
Holding vessel is used to hold the liquid of separating that sees through;
Pressure gauge; This Pressure gauge is 2; First Pressure gauge is installed on the pipeline between compression pump and the flat RO film filter; Second Pressure gauge is installed on the reflux line between flat RO film filter and the head tank, is used for the real-time pressure of indication mechanism in operating process, guarantees experimental system safety;
Control valve is installed on the reflux line between flat RO film filter and the head tank, and between second Pressure gauge and head tank, thereby is used to regulate the effective pressure of the flow regulating system of concentrate;
Safety valve, the one of which end is connected with head tank, and the other end is connected with pipeline between the compression pump and first Pressure gauge, is used for when system pressure is unbalance, discharging too high pressure.
Further, said flat RO film filter comprises top board, base plate and RO diaphragm, and said top board and base plate removably connect; The correspondence position of the face that fits at base plate and top board is provided with rectangular recess, forms gallery; Said RO diaphragm is located between top board and the base plate, and the gallery on top board and the base plate is separated;
The gallery outside of base plate is provided with inner seal ring groove and external seal ring recess around it, and correspondence is provided with inner seal ring and exterior seal ring in inside and outside seal groove; In the gallery of base plate, be provided with the water inlet slit and the concentrate water outlet slit that are parallel to each other; The sidewall of base plate is provided with inlet opening and the concentrate apopore that is connected with water inlet slit and concentrate water outlet slit respectively; On the base plate between the inside and outside seal groove, be provided with lead, said lead is positioned at the inboard Si Jiaochu of external seal ring recess;
Be respectively equipped with a through hole on four jiaos of said RO diaphragm, through realizing the installation and the location of RO diaphragm on the lead that through hole is enclosed within correspondence position respectively;
Top board be provided with base plate on the corresponding seal groove of going up of external seal ring recess, in last seal groove, be provided with sealing ring; The gallery of top board middle part is provided with through liquid water outlet slit, and said to see through liquid water outlet slit parallel with concentrate water outlet slit with the water inlet slit in the base plate gallery, on the sidewall of top board, be provided be connected through liquid water outlet slit through the liquid apopore; On top board, be provided with the lead slot corresponding with lead; Base plate and top board are through lead and lead slot location;
At four jiao place also corresponding the offer screws of base plate with top board, base plate and top board are through bolted together.
Further, said top board and base plate adopt steel plate to process.Thereby guaranteed the ability that whole flat RO film filter bears high pressure.
Further, in the gallery of base plate, also be provided with pad.Change the sectional area of base plate runner through laying pad, thereby can carry out the membrane filtration test under the flow velocity of different tangentials.
A kind of experimental technique of high pressure resistant flat RO film tangential flow filtration adopts above-mentioned experimental system, comprises the steps:
1) between top board and base plate, settles the RO diaphragm, and top board and base plate are tightened together with bolt;
2) connect each equipment: head tank utilizes pipeline to pass through compression pump to link to each other with the inlet opening of flat RO film filter; The concentrate apopore of flat RO film filter is through the defeated head tank that is back to of reflux line, and the liquid apopore that sees through of flat RO film filter links to each other with storage tank through pipeline; First Pressure gauge is installed on the pipeline between compression pump and the flat RO film filter, and second Pressure gauge is installed on the reflux line between flat RO film filter and the head tank; Control valve is installed on the reflux line between flat RO film filter and the head tank, and between second Pressure gauge and head tank; One end of safety valve is connected with head tank, and the other end is connected with pipeline between the compression pump and first Pressure gauge;
3) keep safety valve to close, control valve is opened, and starts high-pressure pump;
4) progressively turn the open degree of control valve down, the inlet hydraulic of flat RO film filter is raise flow out until feed liquid through diaphragm;
5) feed liquid of accomplishing after filtering is collected, termination of pumping, and control valve and safety valve are all opened pressure release.
After treating that experiment finishes, through the bolt of dismantling on four jiaos of the flat RO film filters flat RO film filter is taken apart, thereby the RO diaphragm is taken off to observe its contaminated degree.Because device is for flat, thereby the RO diaphragm that removes can not be damaged, and do not influence under the situation that continues to use in pollution level, can the RO diaphragm be reused.
Compared with prior art; The invention has the advantages that: the experimental system of complete high pressure resistant flat RO film tangential flow filtration; Fully satisfied the needs of various experimental facilities, can bear high pressure and accomplish the experimental analysis of counter-infiltration flat sheet membrane filter medium, safe and reliable; Reduce cost, simple;
This flat filtration system can effectively be simulated the mode of operation of the existing tangential filtration technique of generally applying, and feasible research work based on this cover filtration system has higher practical significance and reference value;
Processing slit and gallery in filter guarantee that liquid flow is unobstructed, even, and can select the pad of different-thickness to lay in the gallery, according to the flow rate calculation method, have reached the purpose of free change, adjustment tangential flow filtration filtering velocity;
According to this experimental technique can be easy start and stop experiments, the dismounting diaphragm is convenient, the operating position that is easy to observe film is especially filtered pollution condition on each stage film, makes things convenient for the research of pollution control technology.
Description of drawings
Fig. 1 is the structured flowchart of experimental system of the present invention;
Fig. 2 is the decomposition texture sketch map of flat RO film filter;
Fig. 3 is the vertical view of base plate;
The side view of Fig. 4 base plate;
Fig. 5 is the cutaway view of Fig. 3 along A-A line;
Fig. 6 is the upward view of top board;
Fig. 7 is the side view of top board;
Fig. 8 is the cutaway view of Fig. 6 along B-B line.
The specific embodiment
To combine accompanying drawing and embodiment that the present invention is described further below.
Embodiment: referring to Fig. 1 to Fig. 8, a kind of experimental system of high pressure resistant flat RO film tangential flow filtration comprises:
Flat RO film filter 3 is used for separating the material of feed liquid, and the separating liquid that will obtain after will filtering; See through liquid (promptly seeing through the liquid of RO film) and be delivered to the holding vessel storage through pipeline, concentrate (promptly not seeing through the liquid of RO film) is through the defeated head tank that is back to of reflux line;
Pressure gauge; This Pressure gauge is 2; First Pressure gauge 51 is installed on the pipeline between compression pump and the flat RO film filter; Second Pressure gauge 52 is installed on the reflux line between flat RO film filter and the head tank, is used for the real-time pressure of indication mechanism in operating process, guarantees experimental system safety;
Said flat RO film filter 3 comprises top board 8, base plate 9 and RO diaphragm 10, and said top board 8 removably connects with base plate 9; The correspondence position of the face that fits at base plate 9 and top board 8 is provided with rectangular recess, forms gallery 11; Said RO diaphragm 10 is located between top board and the base plate, and the gallery on top board and the base plate is separated; Said top board and base plate adopt steel plate to process, thereby have guaranteed the ability that whole flat RO film filter bears high pressure.
The gallery outside of base plate 9 is provided with around it inner seal ring groove 12 and external seal ring recess 13, and correspondence is provided with inner seal ring 14 and exterior seal ring 15 in inside and outside seal groove; In the gallery of base plate, be provided with the water inlet slit 16 and concentrate water outlet slit 17 that are parallel to each other; The sidewall of base plate is provided with the inlet opening 18 and concentrate apopore 19 that is connected with water inlet slit and concentrate water outlet slit respectively; During experiment, the inlet opening links to each other with the water side of high-pressure pump through pipeline, and the concentrate apopore is connected with head tank through reflux line.
On the base plate between the inside and outside seal groove, be provided with lead 20, said lead 20 is positioned at the inboard Si Jiaochu of external seal ring recess; Be respectively equipped with a through hole 21 on four jiaos of said RO diaphragm 10, through realizing the installation and the location of RO diaphragm 10 on the lead 20 that through hole 21 is enclosed within correspondence position respectively.
On top board, be provided with the lead slot 26 corresponding with lead; Base plate and top board are through lead and lead slot location; At four jiao place also corresponding the offer screws 27 of base plate with top board, base plate and top board utilize bolted together after locating through lead and lead slot again; Through bolt, can satisfy the pressure that device integral body need be born, and convenient disassembly.
When system moves, can pass through the pad of pad different-thickness specification in the gallery of base plate, thereby change the sectional area of base plate runner, the shape of said pad is consistent with the gallery shape, and feed liquid is passed through.Under the certain condition of flow, can reach the purpose that changes the tangential flow velocity like this, thereby can carry out the membrane filtration test under the flow velocity of different tangentials.
The course of work: feed liquid is got into by the inlet opening, upwards pours in the effective gallery on the base plate and to the other end from the water inlet slit and flows.Because the diaphragm interception, the liquid that can't see through will get into concentrate water outlet slit at the other end of gallery downwards, and finally flow out from the concentrate apopore.The liquid that sees through diaphragm then gets into the gallery on the top board, is pooled to through in the liquid water outlet slit, flows out from seeing through the liquid delivery port.
A kind of experimental technique of high pressure resistant flat RO film tangential flow filtration comprises the steps:
1) between top board and base plate, settles the RO diaphragm, and top board and base plate are tightened together with bolt;
2) connect each equipment: head tank utilizes pipeline to pass through compression pump to link to each other with the inlet opening of flat RO film filter; The concentrate apopore of flat RO film filter is through the defeated head tank that is back to of reflux line, and the liquid apopore that sees through of flat RO film filter links to each other with storage tank through pipeline; First Pressure gauge is installed on the pipeline between compression pump and the flat RO film filter, and second Pressure gauge is installed on the reflux line between flat RO film filter and the head tank; Control valve is installed on the reflux line between flat RO film filter and the head tank, and between second Pressure gauge and head tank; One end of safety valve is connected with head tank, and the other end is connected with pipeline between the compression pump and first Pressure gauge;
3) keep safety valve to close, control valve is opened, and starts high-pressure pump;
4) progressively turn the open degree of control valve down, the inlet hydraulic of flat RO film filter is raise flow out until feed liquid through diaphragm;
5) feed liquid of accomplishing after filtering is collected, termination of pumping, and control valve and safety valve are all opened pressure release.
After treating that experiment finishes, through the bolt of dismantling on four jiaos of the flat RO film filters flat RO film filter is taken apart, thereby the RO diaphragm is taken off to observe its contaminated degree.Because device is for flat, thereby the RO diaphragm that removes can not be damaged, and do not influence under the situation that continues to use in pollution level, can the RO diaphragm be reused.
Need to prove at last; Above embodiment is only in order to explain technical scheme of the present invention but not the restriction technologies scheme; Although the applicant specifies the present invention with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that those and technical scheme of the present invention is made amendment or is equal to replacement; And do not break away from the aim and the scope of present technique scheme, all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. the experimental system of a high pressure resistant flat RO film tangential flow filtration is characterized in that: comprising:
Head tank is used to hold feed liquid;
Compression pump; Be located between head tank and the flat RO film filter; Its two ends link to each other with flat RO film filter with head tank through pipeline, the feed liquid in the head tank is delivered to flat RO film filter, provide filtration experiment required high pressure simultaneously;
Flat RO film filter is used for separating the material of feed liquid, and the separating liquid that will obtain after will filtering; See through liquid and be delivered to the holding vessel storage through pipeline, concentrate is through the defeated head tank that is back to of reflux line;
Holding vessel is used to hold the liquid of separating that sees through;
Pressure gauge; This Pressure gauge is 2; First Pressure gauge is installed on the pipeline between compression pump and the flat RO film filter; Second Pressure gauge is installed on the reflux line between flat RO film filter and the head tank, is used for the real-time pressure of indication mechanism in operating process, guarantees experimental system safety;
Control valve is installed on the reflux line between flat RO film filter and the head tank, and between second Pressure gauge and head tank, thereby is used to regulate the effective pressure of the flow regulating system of concentrate;
Safety valve, the one of which end is connected with head tank, and the other end is connected with pipeline between the compression pump and first Pressure gauge, is used for when system pressure is unbalance, discharging too high pressure.
2. the experimental system of a kind of high pressure resistant flat RO film tangential flow filtration according to claim 1 is characterized in that: said flat RO film filter comprises top board, base plate and RO diaphragm, and said top board and base plate removably connect; The correspondence position of the face that fits at base plate and top board is provided with rectangular recess, forms gallery; Said RO diaphragm is located between top board and the base plate, and the gallery on top board and the base plate is separated;
The gallery outside of base plate is provided with inner seal ring groove and external seal ring recess around it, and correspondence is provided with inner seal ring and exterior seal ring in inside and outside seal groove; In the gallery of base plate, be provided with the water inlet slit and the concentrate water outlet slit that are parallel to each other; The sidewall of base plate is provided with inlet opening and the concentrate apopore that is connected with water inlet slit and concentrate water outlet slit respectively; On the base plate between the inside and outside seal groove, be provided with lead, said lead is positioned at the inboard Si Jiaochu of external seal ring recess;
Be respectively equipped with a through hole on four jiaos of said RO diaphragm, through realizing the installation and the location of RO diaphragm on the lead that through hole is enclosed within correspondence position respectively;
Top board be provided with base plate on the corresponding seal groove of going up of external seal ring recess, in last seal groove, be provided with sealing ring; The gallery of top board middle part is provided with through liquid water outlet slit, and said to see through liquid water outlet slit parallel with concentrate water outlet slit with the water inlet slit in the base plate gallery, on the sidewall of top board, be provided be connected through liquid water outlet slit through the liquid apopore; On top board, be provided with the lead slot corresponding with lead; Base plate and top board are through lead and lead slot location;
At four jiao place also corresponding the offer screws of base plate with top board, base plate and top board are through bolted together.
3. the experimental system of a kind of high pressure resistant flat RO film tangential flow filtration according to claim 2 is characterized in that: said top board and base plate adopt steel plate to process.
4. the experimental system of a kind of high pressure resistant flat RO film tangential flow filtration according to claim 2 is characterized in that: in the gallery of base plate, also be provided with pad.
5. the experimental technique of a high pressure resistant flat RO film tangential flow filtration adopts the described experimental system of arbitrary claim in the claim 2 to 4, it is characterized in that: comprise the steps:
1) between top board and base plate, settles the RO diaphragm, and top board and base plate are tightened together with bolt;
2) connect each equipment: head tank utilizes pipeline to pass through compression pump to link to each other with the inlet opening of flat RO film filter; The concentrate apopore of flat RO film filter is through the defeated head tank that is back to of reflux line, and the liquid apopore that sees through of flat RO film filter links to each other with storage tank through pipeline; First Pressure gauge is installed on the pipeline between compression pump and the flat RO film filter, and second Pressure gauge is installed on the reflux line between flat RO film filter and the head tank; Control valve is installed on the reflux line between flat RO film filter and the head tank, and between second Pressure gauge and head tank; One end of safety valve is connected with head tank, and the other end is connected with pipeline between the compression pump and first Pressure gauge;
3) keep safety valve to close, control valve is opened, and starts high-pressure pump;
4) progressively turn the open degree of control valve down, the inlet hydraulic of flat RO film filter is raise flow out until feed liquid through diaphragm;
5) feed liquid of accomplishing after filtering is collected, termination of pumping, and control valve and safety valve are all opened pressure release.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100381659A CN102580533B (en) | 2012-02-20 | 2012-02-20 | Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane |
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| CN2012100381659A CN102580533B (en) | 2012-02-20 | 2012-02-20 | Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane |
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| CN102580533B CN102580533B (en) | 2013-11-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104673666A (en) * | 2015-03-10 | 2015-06-03 | 华东理工大学 | Micro tangential flow filtration simulation device |
| CN104826498A (en) * | 2015-04-30 | 2015-08-12 | 天津大学 | Multiuse separation membrane evaluating apparatus |
| CN106000113A (en) * | 2016-07-12 | 2016-10-12 | 山东省科学院海洋仪器仪表研究所 | Separation performance experiment device for small-area filtering membrane in cross flow and interception flow modes |
| CN107754613A (en) * | 2017-11-16 | 2018-03-06 | 浙江益地膜设备有限公司 | A kind of miniature film separate metering system and method for testing |
| CN109925886A (en) * | 2019-04-09 | 2019-06-25 | 吕剑阳 | A kind of application method and its device of inner pressed hollow fiber film assembly |
| CN113443697A (en) * | 2021-07-09 | 2021-09-28 | 哈尔滨工业大学 | Continuous flow device for catalyzing ozone oxidation by multistage membrane module |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104673666A (en) * | 2015-03-10 | 2015-06-03 | 华东理工大学 | Micro tangential flow filtration simulation device |
| CN104826498A (en) * | 2015-04-30 | 2015-08-12 | 天津大学 | Multiuse separation membrane evaluating apparatus |
| CN106000113A (en) * | 2016-07-12 | 2016-10-12 | 山东省科学院海洋仪器仪表研究所 | Separation performance experiment device for small-area filtering membrane in cross flow and interception flow modes |
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| CN113443697B (en) * | 2021-07-09 | 2022-10-25 | 哈尔滨工业大学 | Continuous flow device for catalyzing ozone oxidation by multistage membrane module |
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| CN102580533B (en) | 2013-11-27 |
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