CN106362598A - Apparatus and method for continuously measuring membrane fouling index - Google Patents
Apparatus and method for continuously measuring membrane fouling index Download PDFInfo
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- CN106362598A CN106362598A CN201610559680.XA CN201610559680A CN106362598A CN 106362598 A CN106362598 A CN 106362598A CN 201610559680 A CN201610559680 A CN 201610559680A CN 106362598 A CN106362598 A CN 106362598A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
- B01D65/102—Detection of leaks in membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/40—Automatic control of cleaning processes
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Abstract
The invention provides a measuring apparatus of a membrane fouling index and a measuring method using the same. The measuring apparatus comprises: a filter membrane cell accommodating a filter membrane to filter raw water the membrane fouling index of which is to be measured; a calculation and control part measuring a time (T0) required for filtering first raw water by the filter membrane at predetermined pressure and a predetermined flow rate, a predetermined time (T) required for supplementally filtering the raw water after the raw water is filtered as the first raw water, and a time (T1) required for filtering second raw water by the filter membrane at the predetermined pressure and flow rate, and calculating the fouling index of the filter membrane on the basis of the measured times (T0, T, T1); and a washing part to wash the filter membrane so that the filter membrane can be used repeatedly.
Description
Technical field
The present invention relates to a kind of device for measuring index of membrane fouling, more particularly, to a kind of for continuously simultaneously certainly
The dynamic apparatus and method measuring index of membrane fouling the long-range index of membrane fouling measured with management in real time.
Background technology
Pollution index (fi) is the index related to the pollution of the filter membrane used in water treatment technology, and it evaluates water
The pollution level of the float including, and make raw water to be determined pass through filter membrane and being trapped from it to be disappeared by measuring
The time of consumption simultaneously carries out indexation to calculate to this time.
That is, pollution index can be considered the synonym of index of membrane fouling.Although various indexes can serve as film
Pollution index, but most popular index of membrane fouling is silt density index (SDI) (sdi).Therefore, when sdi is referred to as pollution index
When, following description will be made.
At the water process scene based on membrane filtration process, sdi is used as conventional pollution index.All of these factors taken together can be by
Referred to as pollution index, and can be expressed by equation (1).
t0: the filter membrane the use of aperture being 0.45 μm, under the pressure of 206kpa, to corresponding to pre-configured flow velocity (usually
Raw water 500ml) filtered needed for time (second).
t1: for be carried out continuously after that the scheduled time (in this case, usually 15 minutes, by sdi15Represent)
Filtration (it is, pollution occur after), then to filter again needed for secondary raw water with a raw water identical flow velocity
Time (second).
That is, according to for measuring by sdi15The conventional method of the pollution index representing, filters 500ml by measuring
Time t used by raw water0(first step), carry out other filtration 15 minutes (second steps) and measure identical with first step
Ground filters the time t used by 500ml raw water again1To identify the pollution level (third step) producing in second step, according to
Above pollution index equation is calculating pollution index.Herein it is evident that, thus it is possible to vary first step and third step
Filtration time section in the amount and second step of middle raw water.
Meanwhile, based on the filtration equation in the constant pressure filtration of incompressible filter cake in pollution index equality theory.By fi
The evaluation that value carries out chocking-up degree is widely used in the water quality assessment of pretreatment, such as nanofiltration (nf) and reverse osmosiss (ro).Described
In nf and ro, because producing pollution because the float in raw water adheres to film surface, it is therefore necessary to as much as possible from pre-
Process and in water, remove pollutant.Because pretreated water is the clean water that accurately can not be measured based on turbidity, devises and pass through
The method that relatively simple mensure carries out indexation and quantifies to a small amount of float in water.Generally, in microfiltration (mf) pretreatment
In the case of ultrafiltration (uf) pretreatment, for NF membrane and the raw water of reverse osmosis membrane fi value be about 1.5-3.0 and
It is about 3-5 in the case of media filtration pretreatment such as dual media filtration and sand filtration.Additionally, in the mensure of fi value, leading to
Often use the organic membrane being made up of polymer thing the membrane filter using a diameter of 47mm.
Generally, in nanofiltration process and reverse osmosis, when value (the fi value being measured according to fi assay method) is less than 3
When, determine that pollution is not serious, and when fi value is equal to or more than 5, determine seriously polluted.Therefore, because fi value exceedes NF membrane
Flow into the benchmark of raw water with the pretreatment needed for the manufacturer of reverse osmosis membrane, it is therefore necessary to strengthening pretreating process.
As the legacy equipment for measuring fi value, the equipment for measuring fi value going out as shown in Figures 1 and 2 with
The form configuration of portable external member.
The equipment being commonly used for measuring fi value receives raw water to be determined in raw water feeding unit 10, by making
Flow into enter to the filter membrane 21 supply raw water in filter membrane room 20 under (inflow) in configuration pressure and configuration with pump p and valve v
Row membrane filtration is measuring index of membrane fouling, and after first measures, abandons used filter membrane (21), uses another filter membrane
(21 ') replace used filter membrane (21) and carry out next mensure.
Therefore, as noted previously, as changing filter membrane, the legacy equipment for measuring index of membrane fouling can not continuously simultaneously certainly
Measure index of membrane fouling dynamicly, and because filter membrane is fairly expensive, cause the consumer cost changing filter membrane high.Therefore, use
Measured once or twice within usual one day in the legacy equipment measuring index of membrane fouling.Therefore, legacy equipment problem is, difficult
Water quality information is identified by the substantial variations monitoring index of membrane fouling with the change of water quality according to the polluter flowing into raw water, or
It is difficult to according to each short cycle management water quality information.
Hereinafter, will describe and be used for measuring the device-dependent prior art literature of index of membrane fouling.
Devise in U.S. Patent number 5,198,116, U.S. Patent number 6,306,291, Japanese patent application publication No. 2004-
003170, Japanese patent application publication No. 2012-213676, China Patent Publication No. 101706407 and China Patent Publication No.
All inventive technique disclosed in 102519550, suitable in order to the area by reducing required existing filter membrane, change mensure
Sequence, be effectively improved locate or with respect to for measure test technique propose for measure test technique to improve tradition
Technology.
The device for measuring index of membrane fouling disclosed in Korean Patent no.1006901 is to be arranged in parallel wherein
The fouling membrane having multiple filter membranes with different pore size measures device, and therefore, has quantified all kinds present in raw water
Fouling membrane.
In addition, Korean Patent Publication no.2013-0081436 and European patent registration no.ep 2803398 a1 disclose
The fouling membrane being arranged in series multiple filter membranes with different pore size wherein measures device, and therefore, improves fouling membrane
Quantization degree of accuracy.
However, compared with measuring device with tradition, disclosed apparatus and method are to quantization fouling membrane in the cited documents
Index measurements relative and improve its degree of accuracy there is excellent effect.However, all apparatus and method both correspond to based on interval
The index of membrane fouling assay method of batch, and problem is, because needing to change filter membrane, the company of being difficult to after measuring
Continue and measure and manage index of membrane fouling, and due to employing multiple filter membranes for degree of accuracy, so when changing filter membrane
The cost consumed is much bigger.
[prior art literature]
[patent documentation]
(patent documentation 1) us 5,198,116 b1
(patent documentation 2) us 6,306,291 b1
(patent documentation 3) jp 2004-003170 a
(patent documentation 4) jp 2012-213676 a
(patent documentation 5) cn 101706407 a
(patent documentation 6) cn 102519550 a
(patent documentation 7) kr 1006901 b1
(patent documentation 8) kr 2013-0081436 a
(patent documentation 9) ep 2803398 a1
Content of the invention
[technical problem]
Therefore, visualized the present invention to solve the above problems, and it is an aspect of the present invention to provide a kind of used
In the apparatus and method measuring fouling membrane, it makes it possible to automatically simultaneously METHOD FOR CONTINUOUS DETERMINATION index of membrane fouling, thus due to being not required to change
Filter membrane and decrease cost, and can monitor in real time manage index of membrane fouling.
[technical scheme]
In order to realize above-mentioned aspect, embodiments of the present invention provide a kind of device for measuring index of membrane fouling,
Described device includes: has filter membrane 210 and is contained in filter membrane room 200 therein, for be determined to its index of membrane fouling
Raw water carries out membrane filtration process so that described raw water is processed to be transformed into treated water；Calculate and control unit 400, be used for
Measure and film is carried out to the whole raw waters as a raw water under pre-configured flow velocity and pre-configured pressure by described filter membrane 210
The time t that filtration treatment is consumed0, during it, process it described membrane filtration is carried out to the described raw water as a raw water
Afterwards described raw water is additionally carried out with the pre-configured time t of membrane filtration process, and by described filter membrane 210 in pre-configured flow velocity and
Under pre-configured pressure, the time t that membrane filtration process is consumed is carried out to the described whole raw waters as secondary raw water1, and based on institute
The each time t measuring0, t and t1Calculate the index of membrane fouling of described filter membrane 210；With cleaning unit 600, for cleaning described mistake
Filter membrane 210 makes in pre-configured time t0, t and t1And index of membrane fouling is calculated with control unit (400) by described calculating
After producing fouling membrane during the time being consumed, described filter membrane 210 can be reused, wherein said filter membrane 210 is
Inoranic membrane.
Furthermore it is preferred that described filter membrane 210 is ceramic membrane or corrosion-resistant steel membrane.
Furthermore it is preferred that described cleaning unit 600 includes the cleaning for supplying abluent to described filter membrane room 200
Agent feeding unit 610.
Furthermore it is preferred that described cleaning unit 600 includes the steaming for supplying cleaning steam to described filter membrane room 200
Vapour feeding unit 620.
Furthermore it is preferred that described device also includes being stored therein in the described treated water through membrane filtration
Process water storage element 300, and be stored in described treated water storage element 300 described in supplying to described filter membrane room 200
In treated water so that filter membrane 210 described in backwash.
Furthermore it is preferred that described device also includes treated water storage element 300, wherein it is used for storage through film mistake
The treated water of filter, and be stored in described treated water storage element 300 to the supply of described steam supply unit 620
Process water so that producing steam, and supply the steam of described generation with the direction of backwash to described filter membrane room 200.
Furthermore it is preferred that described device also includes connecting to the described transmission unit 500 calculating with control unit 400.
Furthermore it is preferred that described transmission unit 500 to pre-configured real-time remote monitoring system transmission log in described calculating
Index of membrane fouling with the described filter membrane 210 in control unit.
Furthermore it is preferred that according to pre-configured number of times be carried out continuously the described index of membrane fouling to described raw water record and
Cleaning to described filter membrane (210).
Meanwhile, in order to realize above-mentioned aspect, another embodiment of the present invention provides a kind of side measuring index of membrane fouling
Method, methods described includes: (a) measures and pass through filter membrane 210 under pre-configured pressure and pre-configured flow velocity to whole raw waters
Carry out the time t that membrane filtration is consumed0；B (), after step (a), carries out t of described membrane filtration pre-configured time to raw water；(c)
Measure by described filter membrane 210 under the described pre-configured flow velocity and described pre-configured pressure of step (a) to described whole two
Secondary raw water carries out the time t that membrane filtration process is consumed1；D () is based on the time t being measured0, t and t1Calculate and record fouling membrane
Index；(e) clean described filter membrane 210 make described filter membrane 210 be used for step (a) to (d) by fouling membrane after weight
Again using described filter membrane 210, wherein, described filter membrane 210 is inoranic membrane, and it is pre- to repeat described step (a) to (e)
Configured number is so that Continuous plus record described filter membrane 210 index of membrane fouling.
Furthermore it is preferred that the described cleaning in described step (e) be backwash, Chemical cleaning and by supply steam clear
One of wash.
Furthermore it is preferred that described method also includes: (f) is in the pre-configured backward real-time remote monitoring of described step (e)
The data message of the described index of membrane fouling with regard to continuous recording described filter membrane 210 for the system transfers.
Furthermore it is preferred that described step (f) also includes determining the film with regard to described continuous recording described filter membrane 210
Whether the data message of pollution index has exceeded the pre-configured benchmark of index of membrane fouling, and is determining with regard to described continuous recording
When the data message of described index of membrane fouling exceedes pre-configured benchmark, to described pre-configured real-time remote monitoring system transmit with regard to
The data message of index of membrane fouling is as pre-configured alarm.
[beneficial effect]
As described above, according to the present invention for the apparatus and method of METHOD FOR CONTINUOUS DETERMINATION index of membrane fouling, measuring fouling membrane
Index cleans after or during the period and reuses filter membrane, thus reducing the cost consumed due to changing filter membrane.
Due to being not required to change filter membrane, the flow process of fouling membrane determination step is continual, and it is according to configuration cycle
It is automatization with setup time, be enable to METHOD FOR CONTINUOUS DETERMINATION.
The present invention can monitor remotely and in real time the data message of the index of membrane fouling with regard to METHOD FOR CONTINUOUS DETERMINATION, thus effectively
The data message of the index of membrane fouling of the change of water quality with regard to the inflow raw water of the water processing establishment in each place for the management, described water
Treatment facility has and is installed on the device for measuring index of membrane fouling therein.
Brief description
Fig. 1 and Fig. 2 is for measuring the schematic diagram of device and the actual disposition of fouling membrane according to correlation technique；
Fig. 3 schematically shows the configuration of the device for measuring fouling membrane according to the embodiment of the present invention；With
Fig. 4 is the flow chart that the method for mensure fouling membrane according to the embodiment of the present invention is described.
Specific embodiment
Due to being described in detail with reference to the attached drawings the preferred embodiment of the present invention, aforementioned aspect of the present invention, feature and
Other advantages should be more clear.In this process, clear and convenient in order to describe, the thickness of the line shown in accompanying drawing and
Size of assembly etc. can be exaggerated.In addition, the term that will be described below allows for the function of the present invention and defines
Term, described term can change according to user, the purpose of operator or custom.Therefore, the definition of these terms should base
In the content description throughout description of the invention.
In addition, the exemplary embodiment providing description is to describe the present invention, but the embodiment of described description does not limit
The technical scope of the present invention processed.
Constituting can be as needed with monoblock type for each part measuring the device of index of membrane fouling according to the present invention
Using or the use that is separated from each other.Furthermore it is possible to according to type of service in the state of some parts are saved using described assembly.
1. the description of pair device
Hereinafter, by with reference to Fig. 3 describe in detail according to the embodiment of the present invention be used for measuring the device of fouling membrane.
According to the present invention for the device measuring index of membrane fouling include raw water feeding unit 100, filter membrane room 200,
Treated water storage element 300, calculating and control unit 400, transmission unit 500 and cleaning unit 600.
With pre-configured flow velocity or bigger flow velocity, raw water to be determined to be determined for index of membrane fouling (hereinafter, is referred to as
" raw water ") it is introduced in raw water feeding unit 100, and introduced raw water is supplied to filter membrane room 200.
Filter membrane room 200 connects to raw water feeding unit 100, and filter membrane room 200 has being used for of being accommodated therein
Filter the filter membrane 210 of the raw water from raw water feeding unit 100 supply, and the raw water from raw water feeding unit 100 supply is drawn
Enter in filter membrane room 200 and process so that treated water is transformed into by filter membrane 210 through membrane filtration.
Filter membrane 210 is inoranic membrane.In particular it is preferred to it is by such as aluminium oxide, zirconium oxide, titanium dioxide, rustless steel
The ceramic membrane made with inorganic material such as titaniums or corrosion resistant metal film.This inoranic membrane has high intensity, excellent thermostability, excellent
Different chemical resistance and excellent corrosion resistance, and therefore, it is favourable by the cleaning filter membrane 210 that will be described below
Be recycled.
Treated water storage element 300 connects to filter membrane room 200, and through filter membrane 210 in filter membrane room 200
Membrane filtration process treated water be introduced into and be stored in treated water storage element 300.In addition, being stored in treated water
Treated water in storage element 300 is provided to filter membrane room 200, enabling backwashed filter membrane 210.Therefore, it is not required to
Water to be introduced separately into is used for backwash.
Calculate and control unit 400 is electrically connected to treated water storage element 300, transmission unit 500 and cleaning unit
600.The flow process of transmitted information is represented by dashed line in figure 3.
Calculate and control unit 400 executes following functions.First, calculate and control unit 400 measures to be introduced in and locates
The flow velocity of the treated water in reason water storage element 300.Secondly, calculate and control unit 400 is based on the treated water being measured
Flow velocity and the flow velocity of raw water, process time etc. calculate the index of membrane fouling of filter membrane 210 and record at predetermined time intervals with regard to
The data message of the index of membrane fouling being calculated.3rd, calculate and control unit 400 passes through transmission unit 500 to real time remote
The measured value of monitoring system transmission and a value calculating and recording etc., and the output police when described value exceedes specific threshold value
Report.4th, calculate and control unit 400 controls cleaning unit 600 to be carried out in good time.
As above-mentioned, transmission unit 500 connects to calculating and control unit 400, and wire or wirelessly supervises to real time remote
Control system transfers are with regard to by the data message calculating the index of membrane fouling measuring, calculating and record with control unit 400.Herein
In, " real-time remote monitoring system " refer to can monitor in real time and manage the system of index of membrane fouling that measures and transmit
The concept of object.For example, " real-time remote monitoring system " includes being arranged on the Ministry of environment being equivalent to country's tissue and Envirolution, INC.
Deng in water quality remote monitoring system (tms) etc., but not limited to this.It is also clear that, described real-time remote monitoring system also may be used
To include in needs with regard to the NGO of the data message of index of membrane fouling, local government, company, research institution and university etc.
The real-time remote monitoring system of middle offer.
Cleaning unit 600 connects to filter membrane room 200, and is being carried out according to the control signal calculating with control unit 400
Membrane filtration cleans filter membrane 210 after processing pre-configured number of times.Cleaning unit 600 includes being respectively connecting to filter membrane room 200
Abluent feeding unit 610 and/or steam supply unit 620.
Abluent feeding unit 610 supplies to be applied to the cleaning needed for Chemical cleaning (cleaning (cip) on the spot) of filter membrane 210
Agent.The abluent supplied is for cleaning chemical reagent needed for filter membrane 210 can be different according to the feature of pollution.
However, abluent feeding unit 610 supply acidic cleaner such as sulphuric acid, hydrochloric acid and citric acid remove filter membrane 210 with main
Particle contamination and inorganic pollution supply alkaline cleaner such as Caustic soda and sodium hypochlorite and remove the micro- of filter membrane 210 with main
Biological pollution and organic contamination.
Steam supply unit 620 produces and for being applied to the steam clean (type of physical cleaning) of filter membrane 210
Steam, and this steam can produce and supply by separately supplying water to steam supply unit 620.It is preferable, however, that
Ground, is stored in some treated waters in treated water storage element 300 to steam supply unit 620 supply, described processed
Water is transformed into steam, and the steam being changed is supplied to filter membrane 210 with backwash direction, enabling cleaning is filtered
Film 210.This steam clean can mainly remove the particle contamination of filter membrane 210.
Pay special attention to, cleaning is not limited to physical cleaning and Chemical cleaning.That is, the present invention adopts semipermanent can use
Film such as ceramic membrane is as filter membrane 210, and is therefore carried out in good time, thus measuring in real time and semi-permanently and calculating film
Pollution index.Measure in real time and semi-permanently due to being directed to and calculate index of membrane fouling and carry out described cleaning, it is possible to root
Be used alone or in combination physical cleaning and/or Chemical cleaning according to the pollution level of filter membrane 210, and can apply any its
His cleaning method.
2. the description of pair method
Method by the mensure index of membrane fouling describing with reference to Fig. 4 according to embodiment of the present invention.
Step s100 to s400 is similar to the method for the mensure sdi describing in the related.Will be described in step
S100 to s400.
[step s100]
First, calculate and control unit 400 measures and leads to whole raw waters under pre-configured pressure and pre-configured flow velocity
Cross filter membrane 210 and carry out the time (s100) that membrane filtration is consumed.As described in correlation technique, flow velocity can be 500ml, but very
Substantially, flow velocity not limited to this.
When describe in detail step s100 when, by pump p under pre-configured pressure and pre-configured flow velocity from raw water feeding unit
100 supply raw water to filter membrane room 200, and are supplied to filter membrane room 200 under pre-configured pressure and pre-configured flow velocity
Raw water carries out membrane filtration by the filter membrane 200 being arranged in filter membrane room 200.In addition, the treated water quilt through membrane filtration
It is introduced in treated water storage element 300, and calculate to measure with control unit 400 all raw waters are being drawn corresponding to raw water
Enter to carry out the time t that membrane filtration is consumed under the flow velocity in treated water storage element 3000.Herein, valve v1 can be
Regulating valve for the pre-configured pressure of the raw water of inspection institute's supply.Described raw water can by valve v1 in predefined conditions around
Stream.
[step s200]
Then, raw water is continuously introduced into (s200) in filter membrane 210 with t of pre-configured time in past.That is, by
Constantly carry out in the filtration being carried out by membrane filtration during Time constant t, so the fouling membrane of filter membrane 210 increases always.
As above-mentioned, in the related, pre-configured time t can be 15min, it is apparent that, pre-configured time t not limited to this.
[step s300]
Then, similar to step s100, calculate and control unit 400 measure to all secondary raw waters in pre-configured pressure and
Under pre-configured flow velocity, the time t that membrane filtration is consumed is carried out by filter membrane 2101(s300).Herein, secondary raw water is pre-
Configuration pressure should be identical with the pre-configured pressure of a raw water in step s100 and pre-configured flow velocity with pre-configured flow velocity.?
In step s200, fouling membrane has increased, therefore, the time t of mensure in step s3001With in step s100 measure when
Between t0Different.
When describing step s300 in detail, from raw water feeding unit 100 to mistake under pre-configured flow velocity and pre-configured pressure
Raw water is supplied as secondary raw water to carry out membrane filtration in filter membrane room 200, and to two under pre-configured flow velocity and pre-configured pressure
All raw waters of secondary supply carry out membrane filtration, are then introduced in treated water storage element 300.In addition, calculating and controlling
Unit 400 also measures and carries out, to all secondary raw waters, the time t that membrane filtration is consumed under corresponding to pre-configured flow velocity1.
[step s400]
Then, in step s400, calculate and control unit 400 based on measure respectively in step s100 to s300 when
Between t0, t and t1Calculate index of membrane fouling using the equation (1) described in correlation technique, and the index of membrane fouling being calculated is remembered
Record is in single data base.Remain in the raw water in raw water feeding unit 100 to arrange by being placed in the drain valve v7 of side
Go out.
[step s500-s600]
By above-mentioned step s100 to s400, index of membrane fouling is once measured.In the related, exist and ask
Topic is, after measuring index of membrane fouling, change filter membrane when completing and measuring, therefore, it is not possible in real time and continuous
Ground measures/calculates index of membrane fouling.Can clean after measuring index of membrane fouling however, present invention be configured such that, and therefore
Can measure/calculate index of membrane fouling in real time and continuously.
Detailed content is as follows.
According to the present invention, measuring index of membrane fouling after step s400, during step s100 to s400, filtering
Fouling membrane in film 210 continuously increases, and therefore cleaning filter membrane 210 is to reuse (s500).So that filter membrane 210 exists
It is recycled after being cleaned by, as above-mentioned it is preferable that filter membrane 210 of the present invention is by as inorganic material film
Pottery or corrosion resistant metal make.
Specifically, the filter membrane 210 in cleaning filter membrane room 200.First, close raw water supply side and treated water is discharged
Valve v1 and v2 of side, opens valve v5 according to the features of pollution of filter membrane 210 and makes from the cleaning connecting to filter membrane room 200
Agent feeding unit 610 to filter membrane room 200 supply abluent, thus cleaning filter membrane 210, or open valve v6 make steam lead to
Cross steam supply unit 620 to produce and be conducted to filter membrane room 200, thus cleaning filter membrane 210.
In addition, in addition or individually, can be with backwashed filter membrane 210.For this reason, in the pump p1 than raw water feeding unit side more
Pass through valve v3 and pump p2 under high pressure and supply, to filter membrane room 200, some being stored in treated water storage element 300
Or all treated waters.
Especially, can also carry out as follows above by the cleaning of steam supply unit 620: using valve v4
It is stored in some or all treated waters in treated water storage element 300 to steam supply unit 620 supply, at high temperature
The treated water supplied is transformed into steam and supplies steam with backwash direction to filter membrane room 200.Remainder is
Process water and outside is discharged to by switch valve v4.
Meanwhile, after completing backwash, Chemical cleaning or passing through steam clean, remain in the stream in filter membrane room 200
Body is discharged to outside by single valve v8.
To repeat index of membrane fouling by various methods by pre-configured cycle and pre-configured number of times (s600)
Measure the cleaning with filter membrane 210, need not change therefore, it is possible to reuse the filter membrane 210 in filter membrane room 200.Cause
This, calculate and control unit 400 can continuously measure each value, calculate and record index of membrane fouling by measuring, and at certain
In the case of a little, remind user's pollution level high.
[step s700]
By with regard to calculating in step s600 and the data information transfer of index of membrane fouling that records is to pre-configured remote in real time
Range monitoring system (s700).
Now, transmission unit 500 can determine with regard to continuous recording filter membrane 210 index of membrane fouling data letter
Whether breath has exceeded the pre-configured benchmark of index of membrane fouling, and when data message exceedes pre-configured benchmark, to pre-configured in real time
Long distance control system transmits described data message as pre-configured alarm.Herein, alarm is not limited to use in notice with regard to institute
The index of membrane fouling of record exceedes the mode of the data message of pre-configured index of membrane fouling, and for example, can by warning message and
Audio warning etc. is by alert notification to long distance control system.
Hereinafter, transmitted with regard to continuous recording film to pre-configured real-time remote monitoring system by transmission unit 500
The data message of pollution index.Therefore, it is possible to long-range and the measured index of membrane fouling of monitoring in real time data, accordingly, it is capable to
Enough effectively management are former with regard to the inflow for the water processing establishment (having the device for measuring index of membrane fouling) in each place
The data message of the index of membrane fouling of the change of water quality of water.
As described above, according to the present invention for the apparatus and method of METHOD FOR CONTINUOUS DETERMINATION index of membrane fouling, can obtain following
Effect.
1) due to cleaning and reusing filter membrane, the cost changing filter membrane can be reduced.
2) due to being not required to change filter membrane, the flow process of fouling membrane determination step is continual for the replacing of filter membrane,
And it is automatization according to configuration cycle and setup time so that can be with METHOD FOR CONTINUOUS DETERMINATION.
3) due to the index of membrane fouling of METHOD FOR CONTINUOUS DETERMINATION can be monitored remotely and in real time, it is possible to effective management is with regard to pin
Data message to the index of membrane fouling of the change of water quality of the inflow raw water of the water processing establishment in each place.
3. the description of pair another embodiment
Although having described the situation that there is a filter membrane 210 in figs. 3 and 4, for purposes of the invention can also
There is the situation of multiple filter membranes 210 in enough applications.
Generally, compared with calculating, in step s100 to s400, the time that index of membrane fouling is consumed, in step s500
The time being consumed in cleaning step is relatively long.Therefore, when using multiple filter membrane 210, in any one filter membrane 210
In carry out step s100 to s400 to calculate index of membrane fouling, and be carried out in another filter membrane 210 step s500 with
It is carried out.In this configuration, compared with the situation only applying a filter membrane 210, when using multiple filter membrane 210,
Can control effectively.
Although being described above the preferred embodiment of the present invention, the present invention is not limited to above-mentioned specific
Embodiment.That is, those skilled in the art of the art are without departing substantially from the spirit of claims and model
Enclose and the present invention can be made various changes and modifications, and think the equivalent consistent with all suitable changes and modification
Belong to the scope of the present invention.
[reference]
100: raw water feeding unit
200: filter membrane room
210: filter membrane
300: treated water storage element
400: computing and control system
500: transmission unit
600: cleaning unit
610: abluent feeding unit
620: steam supply unit
P1, p2: pump
V1-v8: valve
Claims (9)
1. a kind of device for measuring index of membrane fouling, described device includes:
There is the filter membrane room (200) being contained in inorganic membrane filtration film (210) therein, for be determined to index of membrane fouling
Raw water carries out membrane filtration process so that described raw water is processed to be transformed into treated water；
Calculate and control unit (400), for measuring by described filter membrane (210) under pre-configured flow velocity and pre-configured pressure
The time t that membrane filtration process is consumed is carried out to the whole raw waters as a raw water0, to as a raw water during it
Described raw water carry out described membrane filtration process after described raw water is additionally carried out with the pre-configured time t of membrane filtration process, and
Film mistake is carried out to the whole raw waters as secondary raw water under pre-configured flow velocity and pre-configured pressure by described filter membrane (210)
Filter processes consumed time t1；And, based on the time t being measured0, t and t1Calculate the fouling membrane of described filter membrane (210)
Index；
Process water storage element (300), be wherein used for storing the described treated water through membrane filtration；
Transmission unit (500), it is used for calculating and control unit to pre-configured real-time remote monitoring system transmission log described
In described filter membrane (210) index of membrane fouling, described transmission unit (500) connect to described calculate and control unit
(400)；With
Cleaning unit (600), makes in pre-configured time t for cleaning described filter membrane (210)0, t and t1And by described
Calculate after producing fouling membrane to calculate the time that index of membrane fouling is consumed with control unit (400) during, can repeat to make
With described filter membrane (210),
Wherein said cleaning unit includes the steam supply unit for supplying cleaning steam to described filter membrane room (200)
(620), and
By being stored in described treated water storage element (300) to described in the supply of described steam supply unit (620)
Process water, produce steam, and with backwash direction to described filter membrane room (200) supply produced by steam to clean described mistake
Filter membrane.
2. device according to claim 1, wherein said filter membrane (210) is ceramic membrane or corrosion-resistant steel membrane.
3. device according to claim 1, wherein said cleaning unit (600) is included for described filter membrane room
(200) supply the abluent feeding unit (610) of abluent.
4. device according to claim 1, also includes treated water storage element (300), is wherein used for storing described warp
Cross the treated water of membrane filtration,
Wherein processed in described treated water storage element (300) to being stored in described in the supply of described filter membrane room (200)
Water is so that filter membrane described in backwash (210).
5. device according to claim 1, is wherein carried out continuously the described film to described raw water according to pre-configured number of times dirty
The record of staining index and the cleaning to described filter membrane (210).
6. a kind of method measuring index of membrane fouling using device according to claim 1, methods described includes:
A () measures and carries out film to whole raw waters by described filter membrane (210) under pre-configured pressure and pre-configured flow velocity
Filter consumed time t0；
B (), after step (a), carries out t of described membrane filtration pre-configured time to raw water；
(c) measure by described filter membrane (210) under the described pre-configured flow velocity and described pre-configured pressure of step (a) to complete
The secondary raw water in portion carries out the time t that membrane filtration process is consumed1；
D () is based on each time t being measured0, t and t1Calculated and recorded index of membrane fouling；With
(e) clean described filter membrane (210) make described filter membrane (210) be used for step (a) to (d) by fouling membrane after weight
Again using described filter membrane (210),
Wherein, described filter membrane (210) is inoranic membrane, and
Repeat the pre-configured number of times of described step (a) to (e) so that Continuous plus to record described filter membrane (210) film dirty
Staining index.
7. method according to claim 6, the described cleaning in wherein said step (e) be backwash, Chemical cleaning and
By supplying one of steam clean.
8. method according to claim 6, also includes: after described step (e), (f) supervises to pre-configured real time remote
The data message of the control described index of membrane fouling with regard to continuous recording described filter membrane (210) for the system transfers.
9. method according to claim 8, wherein said step (f) also comprises determining that with regard to described continuous recording institute
Whether the data message stating the index of membrane fouling of filter membrane (210) has exceeded the pre-configured benchmark of index of membrane fouling, and when determination
When exceeding described pre-configured benchmark with regard to the data message of described continuous recording index of membrane fouling, to described pre-configured remote in real time
Range monitoring system transfers data message is as pre-configured alarm.
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| KR1020150103956A KR101612230B1 (en) | 2015-07-22 | 2015-07-22 | Device for continuously measuring FI and method for measuring FI |
| KR10-2015-0103956 | 2015-07-22 |
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| CN111153513A (en) * | 2020-01-21 | 2020-05-15 | 上海凯鑫分离技术股份有限公司 | Recycling method and recycling system of quenching water in methanol-to-olefin process |
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| CN114965926A (en) * | 2022-05-20 | 2022-08-30 | 德斯科技术(南京)有限公司 | Modular full-automatic unattended pollution index determination system and method |
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| KR101612230B1 (en) | 2016-04-14 |
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