CN104787846A - Water treatment system - Google Patents
Water treatment system Download PDFInfo
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- CN104787846A CN104787846A CN201510019398.8A CN201510019398A CN104787846A CN 104787846 A CN104787846 A CN 104787846A CN 201510019398 A CN201510019398 A CN 201510019398A CN 104787846 A CN104787846 A CN 104787846A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/144—Wave energy
Abstract
The invention provides a water treatment system and improves water making performance of the water treatment system. At the downstream of an RO membrane assembly (32) provided with an RO membrane filtering supply water containing a separated substance, an adsorption capacity measuring sensor (35a) provided with a thin membrane composed of a material the same as a surface material of the RO membrane on a measuring face is disposed; and, through the adsorption capacity measuring sensor (35a), the mass of a dirt reason substance contained in concentrated water discharged from the RO membrane assembly (32). According to the mass of the dirt reason substance measured by the adsorption capacity measuring sensor (35a), water quality of the supply water conveyed to the RO membrane assembly (32) is evaluated, operating condition of preprocessing of a preprocessing part (20) is determined, and then dirt of the RO membrane is reduced.
Description
Technical field
The present invention relates to water treatment system.
Background technology
As the background technology of the art, there is Japanese Patent No. 5093192 publication (patent documentation 1).Following technology is described in this publication, that is: be used in surface to have with the film of the Facing material same material of separatory membrane and the sensor possessing the components of assays such as the quartz crystal unit of the adsorptive capacity measured on this film, according to the adsorptive capacity change on sensor surface, evaluate for the water quality fed water the impact of separatory membrane.
Patent documentation 1: Japanese Patent No. 5093192 publication
The assembly with the separatory membrane removing separated material from former water is provided with in water treatment system.But, the separation performance removing separated material when separatory membrane produces dirt (blocking) from former water can decline, thus water treatment system make water degradation, therefore generate the water with the state equivalent not producing dirt (blocking) under wanting the state creating dirt (blocking) at separatory membrane, need the running ability (power) increasing water treatment system.
In addition, when separatory membrane producing dirt, need the face cleaning separatory membrane.Further, even if when the face cleaning separatory membrane, the filtration capacity that creates the separatory membrane of dirt are not also recovered, need to change element.When replacement of element, need to stop water treatment system for a long time, in addition, part cost is used and the operating cost of replacing can be attached in operating cost.Therefore, due to separatory membrane producing dirt, the cost of water treatment of water treatment system also can increase.
Summary of the invention
Therefore, the invention provides a kind of technology, can by reducing the dirt of separatory membrane, that improves water treatment system makes water-based energy, thus reduces the cost of water treatment of water treatment system.
For solving the means of problem
In order to solve above-mentioned problem, water treatment system of the present invention, in the downstream of assembly with separatory membrane, is provided with the sensor on mensuration face with the film be made up of the material identical with separation membrane surface material.
By this sensor, measure the quality of the dirt reason material contained the condensed water of discharging from assembly, according to the quality of this dirt reason material, evaluate the water quality for feedwater being transported to assembly, determine the pretreated operating condition for feedwater being transported to assembly, reduce the dirt of separatory membrane thus.
The effect of invention
According to the present invention, that can improve water treatment system makes water-based energy.
By the explanation of following embodiment, specify problem other than the above, structure and effect.
Accompanying drawing explanation
Fig. 1 is the sketch chart of an example of the structure of the seawater desalination system representing embodiment 1.
Fig. 2 is the sectional view of an example of the structure of the adsorptive capacity determination sensor representing embodiment 1.
Fig. 3 is the process picture sheet that the example forming the operation of aromatic polyamide film on the mensuration face of the sensor chip of embodiment 1 is described.
Fig. 4 (a) and (b) are formed in the chemical structural formula of the aromatic polyamide film on the mensuration face of the sensor chip of embodiment 1.
Fig. 5 is the sectional view of an example of the mounting structure of the adsorptive capacity determination sensor representing the adsorptive capacity determination part being arranged on embodiment 1.
Fig. 6 is the sketch chart of an example of the structure of the seawater desalination system representing embodiment 2.
Fig. 7 is the graphic representation of the water flowing temporal correlation of the adsorptive capacity Wc of the adsorptive capacity Wb of the dirt reason material representing main adsorptive capacity determination sensor and the dirt reason material of secondary adsorptive capacity determination sensor.
Fig. 8 is the graphic representation of the water flowing temporal correlation of the adhesion amount Δ W representing the dirt reason material be attached on RO film.
Embodiment
In the following embodiments, be divided into multiple part where necessary for convenience's sake or embodiment is described, except situation about expressing especially, these parts or embodiment are not independent of each other, but are in the relation of the variation, details, supplementary notes etc. that a side is part or all of the opposing party.
In addition, in the following embodiments, when relating to (comprising number, numerical value, amount, scope etc.) such as the numerals of key element, except situation about expressing especially and principle being defined as clearly the situation of specific numeral etc., being not limited to this specifically digital, also can be that specific number is above or below.
In addition, in the following embodiments, its integrant (also comprising key element step etc.) is except situation about expressing especially and to be considered in principle except clear and definite necessary situation etc., not necessarily necessary.
In addition, when relating to " being made up of A ", " being formed by A ", " there is A ", " comprising A ", except having expressed the situation etc. only with this key element especially, do not get rid of key element in addition.Similarly, in the following embodiments, when relating to the shape, position relationship etc. of integrant etc., except situation about having expressed especially and to be considered to clear and definite in principle be not such situation etc., comprise in fact the key element etc. approximate or similar with its shape etc.This for above-mentioned numerical value and scope too.
In addition, in the accompanying drawing that following embodiment uses, even if vertical view sometimes also can for ease of checking accompanying drawing and additional shadow line.In addition, for illustration of in all figure of following embodiment, the component with same effect marks same Reference numeral in principle, omits the explanation that it repeats.Below, present embodiment is explained with reference to the accompanying drawings.
First, in order to make the water treatment system of present embodiment definitely, explain the problem that present inventor has performed in the water treatment system of comparative studies.
Such as, as recorded in above-mentioned patent documentation 1, in water treatment system, mostly separatory membrane is used to remove separated material from former water.This separatory membrane is divided into microfiltration membrane (Microfiltration Membrane), ultra-filtration membrane (Ultrafiltration Membrane), reverse osmosis membrane (Reverse Osmosis Membrane: be designated as RO film below), nanofiltration membrane (Nanofiltration Membrane: be designated as NF film below) and ion-exchange membrane (IonExchange Membrane) etc.Microfiltration membrane and ultra-filtration membrane have miniature hole (hereinafter referred to as micropore), are physically got rid of the particle of large separated material by this micropore.RO film, NF film and ion-exchange membrane utilize the affinity of the velocity of diffusion of the molecule of separatory membrane and the difference of penetration speed or separatory membrane and molecule to remove separated material.
The no matter separatory membrane of which kind of type, the separation performance removing separated material after producing dirt from former water all can decline.In microfiltration membrane and ultra-filtration membrane, small material enters blockage of the micro orifice in micropore, thus produces dirt.In addition, in RO film, NF film and ion-exchange membrane, molecule attached produces dirt on the surface of separatory membrane.
The generation of dirt can cause the decline of making water-based energy of water treatment system.Therefore, in water treatment system, for preventing the pre-treatment of the dirt of separatory membrane from being necessary, before Jiang Yuanshui supplies to separatory membrane, remove the pre-treatment of dirt reason material as much as possible.
As the method determining pretreated operating condition, such as above-mentioned patent documentation 1 discloses the method for the water quality assessment quality of the dirt reason material being adsorbed in sensor being used in the former water to separatory membrane supply.Utilize the method, the phenomenon identical with the dirt of separatory membrane can be reproduced at sensor.That is, sensor is set in the upstream of separatory membrane, using the benchmark of the quality of the dirt reason material by this sensor determination as the water quality assessment of the former water supplied to separatory membrane.
But, in the method that above-mentioned patent documentation 1 is recorded, if pass through pre-treatment, dirt reason material is removed, concentration to the dirt reason material contained by the former water that separatory membrane supplies reduces, be then adsorbed in the Mass lost of the dirt reason material of sensor, and estimating precision reduces.Therefore, existence is difficult to the problem quality of the dirt reason material at sensor determination being used in judgment standard when determining pretreated operating condition.
In addition, the generation of dirt causes the decline of the filtration capacity of separatory membrane.The face of separatory membrane is cleaned when filtration capacity have dropped.But, even if need when also not recovering to change element in the cleaning face of separatory membrane, filtration capacity.When changing element, owing to stopping water treatment system for a long time, so the operation factor of water treatment system declines.In addition, the part cost due to element is used and the operating cost of replacing can be attached in operating cost, so the operating cost of water treatment system rises.Its result, occurs that the cost of water treatment of water treatment system increases such problem.
Excessive interpolation agglutinant and sterilant in pre-treatment, remove dirt reason material as much as possible to the former water that separatory membrane supplies, can prevent the dirt of separatory membrane thus.But due to the excessive interpolation of agglutinant and sterilant, operating cost increases.
Embodiment 1
In embodiment 1, as an example of water treatment system, the seawater desalination system using RO film to desalinize seawater is described.The water treatment system of embodiment 1 is not limited to the seawater desalination system employing RO film, also can be applicable to such as employ the seawater desalination system of FN film or ion-exchange membrane, purify the pure water/ultra-pure water manufacturing system etc. of draining also generation recycling Water reuse water manufacturing system and generation pure water or ultrapure water.
Use Fig. 1 that the minimizing method of the dirt of the structure of seawater desalination system 1, the water treatment method of seawater desalination system 1, the filter type of RO membrane module 32 and RO film is described.Fig. 1 is the sketch chart of an example of the structure of the seawater desalination system 1 representing embodiment 1.
The structure > of < seawater desalination system 1
As shown in Figure 1, seawater desalination system 1 is removed and the water treatment system of desalination as separated material at the salinity contained in seawater, organism, microorganism (comprising mushroom), boron and solid seston etc., formed from upstream with the order in seawater water intaking portion 10, pretreatment portion 20 and desalination portion 30 primarily of above-mentioned three parts.
Seawater water intaking portion 10 is made up of intake pipe 11, water pump 12 and former tank 13.Intake pipe 11 except the structure of extracting seawater, can also be the structure extending to sea and extract deep water except being arranged on marine, also can be in addition be embedded in seabed and filtered the structure of pumping seawater afterwards with seabed sand.Water pump 12, except being arranged on land structure, can also be arranged on marine structure.
In addition, in order to prevent the biological breeding in intake pipe 11 such as microorganism, algae and shellfish, intake pipe 11 blocks, and can adopt the structure injected in intake pipe 11 and prevent the medicine (such as sterilant etc.) of the breeding of these biologies.
Pretreatment portion 20 is made up of for feed trough 23 sand filtration tank 21, hyperfiltration membrane assembly 22, water transfer pump 22a and RO film, carries out removing the sterilization of microorganism and the pre-treatment of other suspended components.Further, the liquid medicine injection system 24 multiple medicine being injected seawater is provided with at pretreatment portion 20.Liquid medicine injection system 24 is formed according to the kind of the medicine of injection seawater.In addition, suspended components is organism mostly.In addition, also organic/inorganic substance sometimes.
Represent in FIG sterilant injection unit 24a, pH adjusting agent injection unit 24b, agglutinant injection unit 24c and in and reductive agent injection unit 24d.Sterilant injection unit 24a injects the sterilant of the elimination of micro-organisms.PH adjusting agent injection unit 24b injects the pH adjusting agent of the efficiency for preventing incrustation scale and the raising aggegation produced due to polyvalent ion.Agglutinant injection unit 24c injects the agglutinant being used for removing suspended components efficiently at sand filtration tank 21.In and reductive agent injection unit 24d inject neutralizing agent and reductive agent.
From sterilant injection unit 24a, as the sterilant of the elimination of micro-organisms, inject hypochlorous acid or chlorine etc. to seawater.The interval injected according to the intermittence of the sterilant injected from sterilant injection unit 24a and concentration, the extinction rate of the microorganism in seawater or survival rate change.
In addition, the function of the RO film that the RO membrane module 32 in desalination portion 30 can be made to have due to the hypochlorous acid that injects as sterilant or chlorine reduces, so preferably in the structure to RO membrane module 32 water delivery pre reduction seawater.Therefore, preferably can avoid the overprimed structure of sterilant, the variable valve VL1 of the injection rate regulating sterilant is set at sterilant injection unit 24a.
In addition, also sterilant can be injected from sterilant injection unit 24a to intake pipe 11.In the case, preferably the variable valve VL1 regulating injection rate is also set at the pipeline injecting sterilant to intake pipe 11.
In addition, in order to prevent the incrustation scale because polyvalent ion produces and improve aggegation efficiency, the seawater processed by seawater desalination system 1 is preferably adjusted to acidity (pH3 ~ 5).Therefore, inject the pH adjusting agents such as sulfuric acid from pH adjusting agent injection unit 24b to seawater and suitably regulate pH.Reference numeral VL2 is the variable valve of the injection rate regulating pH adjusting agent.
In addition, the agglutinant such as polymerize aluminum chloride or iron(ic) chloride is injected from agglutinant injection unit 24c to seawater.Promote the growth of the throw out of the suspended components contained in seawater due to agglutinant, so made the micropartical of suspended components grow to the throw out of the size of more than 1 μm by the injection of agglutinant, the removal efficiency of the suspended components thus in sand filtration tank 21 improves.
When the injection rate of agglutinant is very few, throw out can not suitably be grown up, and suspended components is through sand filtration tank 21 sometimes.In addition, when the injection rate of agglutinant is excessive, the remainder that cannot be used in the growth of throw out carrys out load to the RO film strips be arranged in the RO membrane module 32 in desalination portion 30.Therefore, the variable valve VL3 of the injection rate regulating agglutinant is set at agglutinant injection unit 24c.
From in and reductive agent injection unit 24d inject the neutralizing agent of the seawater for neutralizing the acidity being adjusted to pH3 ~ 5 to seawater and be mainly used in reducing the reductive agent of sterilant.Reference numeral VL4 is the variable valve of the injection rate regulating neutralizing agent and reductive agent.
As mentioned above, in the pretreatment process of pretreatment portion 20, carry out by the injection of sterilant come the elimination of micro-organisms operation and inject agglutinant the throw out of suspended components is grown up, removes the operation of suspended components at sand filtration tank 21.
Desalination portion 30 is made up of following three pipelines.First pipeline is the main line LM be made up of high-pressure pump 31, RO membrane module 32 and fresh-water tank 33.Second pipeline is the looped pipeline road LS1 be made up of RO membrane module 32, energy recycle device 34, concentrated tank 36 and the pump 37 for discharging condensed water from concentrated tank 36.3rd pipeline is the looped pipeline road LS2 be made up of RO membrane module 32, adsorptive capacity determination part 35 and concentrated tank 36.In addition, in order to regulate the amount of the condensed water of carrying to adsorptive capacity determination part 35, valve VL5 is arranged at looped pipeline road LS2.
The surface being arranged on the RO film of RO membrane module 32 adopts semi-permeable membranes.Semi-permeable membranes be only made by the interactional different of the interaction of semi-permeable membranes and water molecules and semi-permeable membranes and separated material water molecules through film, have the semi-permeable membranes of cellulose acetate class and the semi-permeable membranes of aromatic polyamide class.Wherein, water molecules perviousness and the ionogen removal capacity of the semi-permeable membranes of aromatic polyamide class are high, so can be used for industry.In embodiment 1, use the RO film with the semi-permeable membranes of aromatic polyamide class, and also can use the RO film of the semi-permeable membranes with cellulose acetate class.
The structure of RO membrane module 32 is not defined.RO membrane module 32 can be formed by element RO film being folded into spiral-shaped element or harness hollow-fibre membrane, this RO film by thickness be hundreds of μm microporous matter supporting mass surface on to be formed with thickness be that the composite membrane of the polyamide membrane (such as the semi-permeable membranes of aromatic polyamide class) of less than 0.1 μm is formed.The columnar element that the element of this situation mostly is that diameter is 4 inches (about 10cm), 8 inches (about 20cm) or 16 inches (40cm) and length are about 1m, adopts the RO membrane module 32 of such element aligned in straight columns in the pressure vessel being called vessel (Vessel).
RO film is being folded in the element of spiral helicine shape, in order to prevent RO film being close to, such as, at the pad of intermembranous insertion polyethylene each other.But, if the gap of pad and RO film is about 0.5 μm, narrow.Therefore, the security filter of thickness number μm can be installed in the upstream of RO membrane module 32.
The large suspended components of more than 1 μm is removed at pretreatment portion 20.But, until before seawater arrives RO membrane module 32, can aggegation again at the not removed small suspended components of pretreatment portion 20, or suspended components etc. can be peeled off from pipe arrangement and produce the suspended components of several μm sometimes.Seawater stream in obturating element is installed in order to prevent that this suspended components from flowing into RO membrane module 32 for the security filter of RO membrane module 32.
The water treatment method > of < seawater desalination system 1
In the seawater desalination system 1 of embodiment 1, by the water pump 12 in seawater water intaking portion 10 via intake pipe 11 from the seawater of marine extraction, temporary storage, at former tank 13, after the precipitated removal of a part of the separated material contained in the seawater, is transported to pretreatment portion 20.
At pretreatment portion 20, be filled with sterilant from sterilant injection unit 24a, be filled with pH adjusting agent from pH adjusting agent injection unit 24b and be filled with the seawater inflow sand filtration tank 21 of agglutinant from agglutinant injection unit 24c.At sand filtration tank 21, separated material, the throw out of suspended components mainly being grown to more than 1 μm by agglutinant are filtered and remove, and the seawater through sand filtration tank 21 is transported to hyperfiltration membrane assembly 22 by water transfer pump 22a.At hyperfiltration membrane assembly 22, from seawater, be separated granular separated material, the molecular weight of removing tiny more than 0.1 μm is further thousands of polymers and bacterium etc.The microorganisms such as the bacterium contained in seawater almost 100% are removed by hyperfiltration membrane assembly 22.
Seawater is pressurized to about 0.1 ~ 0.5Mpa by pressure-producing parts such as such as water transfer pump 22a, and is transferred (force feed) to hyperfiltration membrane assembly 22.Be transported to the seawater of hyperfiltration membrane assembly 22, pressure is higher, and the speed through hyperfiltration membrane assembly 22 is faster, but is separated performance (separation performance) decline of separated material from seawater.
From in and reductive agent injection unit 24d in the seawater through hyperfiltration membrane assembly 22, inject neutralizing agent and reductive agent, is adjusted to acid seawater by pH adjusting agent and is neutralized, and the sterilant injected is reduced.Then, seawater is stored in RO film in feed trough 23.
Be stored in the seawater of RO film for feed trough 23, pressurizeed by the high-pressure pump 31 in desalination portion 30 and be transferred (force feed) to RO membrane module 32, being filtered at RO membrane module 32.Then, the RO film had through RO membrane module 32 and the seawater eliminating separated material are stored in fresh-water tank 33 as fresh water.On the other hand, there is no the seawater of the RO film had through RO membrane module 32, under the state of being pressurizeed by high-pressure pump 31, become the condensed water containing separated material, and discharge from looped pipeline road LS1.
In addition, make the condensed water being stored in concentrated tank 36 such as return in marine water exhaust system, carrying out reducing the process of salt concentration and extract salinity and can as the process of the material of the raw material of pharmaceutical chemicals.
In addition, the energy recycle device 34 being arranged on desalination portion 30 is the systems of the pressure such as pressure of the condensed water of high pressure being converted to the seawater being transported to RO membrane module 32, the pressurization of auxiliary seawater.
The filter type > of <RO membrane module 32
The filter type filtering former water with separatory membrane has following two kinds of modes.
A kind of filter type is full dose filter type, is make former water full dose by the mode of separatory membrane.Under which, do not have the separated material through separatory membrane can be deposited in the face of separatory membrane.Further, the micropore of separatory membrane blocks due to the accumulation of separated material, the phenomenon therefore occurring declining along with runtime through the water yield, namely produces dirt.
Another kind of filter type is cross-flow filtration mode, be make former water along the face of separatory membrane flow, the mode of one component permeate separatory membrane.Under which, the separated material through separatory membrane is not had to be discharged together along with former water and the face of separatory membrane can not be deposited in.Therefore, under desirable cross-flow filtration mode, the water yield through separatory membrane becomes the steady state value determined by the flow velocity of former water, and does not depend on runtime.
Therefore, in the seawater desalination system 1 of embodiment 1, have employed cross-flow filtration mode.But even cross-flow filtration mode, through operating for a long time, the separated material contained in seawater also slowly can be adsorbed in RO film and blockage of the micro orifice, thus occur RO film the phenomenon declined gradually through the water yield, namely produce dirt.
In the separated material of RO film being adsorbed in cross-flow filtration mode, near the face of RO film electrolyte concentration is had to raise and organism incrustation scale etc. that organism that the inorganics incrustation scale of separating out, the microorganism that contains in seawater contain in the face breeding of RO film and the biofouling that produces and seawater adsorbs.
Such as electrolyte concentration is uprised and the inorganics incrustation scale of separating out, can tackle in the following manner, uprise the condition of also not easily separating out incrustation scale even if be namely adjusted to electrolyte concentration by the injection of Scale inhibitors or pH adjusting agent or regularly rush rinse water to remove by shearing force to the face of RO film.
But organism incrustation scale cannot be removed by shearing force, accumulate gradually through long running.Such as seawater desalination system 1 when, variation is had according to the stuctures and properties of pretreatment portion 20, the water quality of seawater and the drug variety etc. that injected by liquid medicine injection system 24, but convert with TOC (Total Organic Carbon: total organic carbon amount), be transported to the organism containing about 0.1 ~ 10mg/L in the seawater in desalination portion 30.
When RO film producing the dirt brought by organism, the filtration capacity of RO film declines.When filtration capacity have dropped, by rushing along the face of RO film the face that scavenging solution cleans RO film.But, even if when the face filtration capacity of cleaning RO film is not also recovered, need to change element.The element of RO membrane module 32 is changed in seawater desalination system 1.
When replacement of element as above, owing to stopping seawater desalination system 1 for a long time, the operation factor of seawater desalination system 1 declines.In addition, the part cost due to element is used and the operating cost of replacing can be attached in operating cost, so the operating cost of seawater desalination system 1 rises.Therefore, in order to reduce cost of water treatment, need from the seawater being transported to RO membrane module 32, to get rid of organism as much as possible.
But if excessively carry out pre-treatment, due to the excessive interpolation of agglutinant and sterilant, operating cost increases.In addition, the remainder of the growth of the organic throw out contained in seawater cannot be used in owing to adding excessive agglutinant, can be attached on RO film by hyperfiltration membrane assembly 22, carry out load to RO film strips.
The minimizing method > of the dirt of <RO film
Therefore, in embodiment 1, evaluate the water quality for feedwater being transported to RO membrane module 32, control the parameter (the medicine injection rate such as such as agglutinant, operating pressure etc.) to the water transfer pump 22a of hyperfiltration membrane assembly 22 water delivery of pretreatment portion 20, to carry out most preferred pre-treatment for its water quality.Thus, excessive pre-treatment can not be carried out and just can get rid of dirt reason material from the confession feedwater being transported to RO membrane module 32, therefore, it is possible to reduce the generation of the dirt of RO film.Its result, can reduce the number of times of the cleaning of the face of RO film and the element replacement of RO membrane module 32, in addition, can reduce the addition of agglutinant etc., so can reduce the operating cost of seawater desalination system 1.
At this, containing multiple suspended components in the seawater of being desalinated by seawater desalination system 1, and according to the affinity of suspended components and RO film not on an equal basis, suspended components is also different to the influence degree of the generation of dirt.Therefore, the total organic carbon amount of seawater is not necessarily high with the dependency of the dirt produced at RO film.
Therefore, as the method evaluating the water quality for feedwater being transported to RO membrane module 32, whether be the water quality in fact easily producing dirt to evaluate, use the sensor with the condition of surface similar with RO film, measure the quality for the dirt reason material contained in feedwater being transported to RO membrane module 32.
In embodiment 1, as shown in Figure 1, looped pipeline road LS2 (than RO membrane module 32 downstream and position more by the upstream than concentrated tank 36) adsorptive capacity determination part 35 is set.At adsorptive capacity determination part 35, the sensor (such as adsorptive capacity determination sensor 35a described later) with the condition of surface similar with RO film is set, at adsorptive capacity determination part 35, the adsorptive capacity being adsorbed in the dirt reason material contained in the condensed water of sensor can be measured.In addition, from RO membrane module 32 to the looped pipeline road LS2 of concentrated tank 36, dirt reason material is concentrated.Therefore, even be transported to the situation low for the concentration of the dirt reason material contained in feedwater of RO membrane module 32, the adsorptive capacity of the dirt reason material being adsorbed in sensor can also be measured accurately.In addition, adsorptive capacity determination part 35 also can be possess analyzer room, condensed water is delivered to analyzer room from valve VL5 by pipe arrangement and carries out the structure that measures.
As mentioned above, at adsorptive capacity determination part 35, the adsorptive capacity being adsorbed in the dirt reason material contained in the condensed water of sensor can be measured.But, because a part for dirt reason material can be attached on RO membrane module 32, so the measurement result of the adsorptive capacity of the dirt reason material measured by adsorptive capacity determination part 35 likely can not be corresponding simply with the quality for the dirt reason material contained in feeding water being transported to RO membrane module 32.
But, use condensed water and the quality of dirt reason material that determines, for the quality for the dirt reason material contained in feedwater being transported to RO membrane module 32, roughly proportionally increase with the enrichment factor of condensed water.Therefore, use the measurement result of the adsorptive capacity of the dirt reason material measured by adsorptive capacity determination part 35, the quality for the dirt reason material contained in feedwater being transported to RO membrane module 32 can be calculated.According to the value that this calculates, the water quality for feedwater being transported to RO membrane module 32 can be known.
Below, concrete quality measuring method is described.
First, according to the water yield for feedwater being transported to RO membrane module 32 and the water yield through water (water flowed among the main line LM of Fig. 1) of discharging from RO membrane module 32, calculate the enrichment factor of the condensed water (water flowed among looped pipeline road LS1, LS2 of Fig. 1) of discharging from RO membrane module 32.Then, the adsorptive capacity being adsorbed in the dirt reason material of sensor is measured by adsorptive capacity determination part 35.Then, according to the adsorptive capacity of dirt reason material being adsorbed in sensor determined by adsorptive capacity determination part 35 and the enrichment factor of condensed water, calculate the quality for the dirt reason material contained in feedwater being transported to RO membrane module 32.
Like this, according to the adsorptive capacity being adsorbed in the dirt reason material of sensor determined by adsorptive capacity determination part 35, the water quality (quality of dirt reason material) for feedwater being transported to RO membrane module 32 can be evaluated.
Using obtained by above-mentioned quality measuring method, the water quality for feedwater that is transported to RO membrane module 32 as judgment standard, control the parameter of pretreatment portion 20, most preferred pre-treatment can be carried out for the water quality for feedwater being transported to RO membrane module 32.Such as, when being transported to RO membrane module 32 large for the quality of dirt reason material contained in feedwater, as long as increase the addition of agglutinant.Like this, by carrying out most preferred pre-treatment for the water quality for feedwater being transported to RO membrane module 32, excessive pre-treatment can not be carried out and just can get rid of dirt reason material from the confession feedwater being transported to RO membrane module 32, therefore, it is possible to reduce the generation of the dirt of RO film.
Its result, that can improve seawater desalination system 1 makes water-based energy.Further, the number of times of the cleaning of the face of RO film and the element replacement of RO membrane module 32 can be reduced, in addition, the addition of agglutinant etc. can be reduced, therefore, it is possible to reduce the operating cost of seawater desalination system 1.
In embodiment 1, as the sensor being arranged on adsorptive capacity determination part 35, apply the adsorptive capacity determination sensor 35a that can measure the quality of the adsorptive be adsorbed on the mensuration face of sensor according to the micro-balance method of quartz crystal unit.
Below, use Fig. 2 that the concrete structure of adsorptive capacity determination sensor 35a is described.Fig. 2 is the sectional view of an example of the structure of the adsorptive capacity determination sensor 35a representing embodiment 1.
As shown in Figure 2, adsorptive capacity determination sensor 35a is made up of sensor chip 350 (such as, the sales item of Q-Sense society) and the aromatic polyamide film 351 be formed on the mensuration face F1 of sensor chip 350.
Sensor chip 350 is formed by with lower member, AT cutting crystal plate (quartz crystal unit) 350a that namely such as thickness is about 0.3mm, diameter is about 14mm in thin round plate shape, be formed in gold electrode 350b on the two sides of AT cutting crystal plate 350a and in the one side of sensor chip 350 via the silicon-dioxide (SiO that gold electrode 350b is formed by sputtering method
2) film 350c.The thickness of gold electrode 350b is about 300nm, and the thickness of silicon dioxide film 350c is about 100nm.
The micro-balance method of quartz crystal unit is the measuring method of the principle that the resonant frequency vibrated of shearing (ず り) that the AT cutting crystal plate 350a that make use of such as adsorptive capacity determination sensor 35a produces is directly proportional to the quality of AT-cut crystal plate 350a.Quality change when mensuration face F1 (face of silicon dioxide film 350c film forming) having been adsorbed adsorptive as resonant frequency change and detect.That is, the quality being changed to adsorptive of resonant frequency.
Below, use above-mentioned Fig. 2, Fig. 3 and Fig. 4 (a) that first example of the method for film forming aromatic polyamide film 351 on the mensuration face F1 of sensor chip 350 is described.Fig. 3 illustrates that the mensuration face F1 at the sensor chip 350 of embodiment 1 forms the process picture sheet of an example of the operation of aromatic polyamide film 351.Fig. 4 (a) is formed in the chemical structural formula of the aromatic polyamide film on the mensuration face F1 of the sensor chip 350 of embodiment 1.In addition, the face of the F1 opposition side, mensuration face with sensor chip 350 is called back side F2.
Step S1 (back-protective): attach masking film etc., covering protection back side F2 at the back side F2 of sensor chip 350.
Step S2 (dry-cleaning): irradiate Excimer UV line (wavelength 192nm) on the mensuration face F1 of sensor chip 350, make the F1 hydrophilization of mensuration face and remove lubricant component etc.
Step S3 (silane coupled process): sensor chip 350 is immersed 1% aqueous solution of silane coupling agent (3-TSL 8330) after 2 minutes, with the sensor chip 350 that running water takes out, and blow away liquid with nitrogen.
Step S4 (heating): under 80 DEG C of conditions, sensor chip 350 is heated 10 minutes, carries out linked reaction.
Step S5 (flooding in two amine aqueous solutions): after making mensuration face F1 upward sensor chip 350 be put into the containers such as dish of the shallow end, pour the m-phenylenediamine aqueous solution of 0.04wt% into, flood to make whole sensor chip 350.
Step S6 (dripping dicarboxylic acid hexane solution): at the muriatic hexane solution of terephthalic acid of the surface imp lantation 0.04wt% of the m-phenylenediamine aqueous solution, to make it stacked with about 1mm thickness.
Step S7 (forming film at interface): leave standstill 20 ~ 30 seconds, form polyamide layer at interface.
Step S8 (transfer): inclination pull-up sensor chip 350, makes the polyamide layer being formed in interface transfer on the mensuration face F1 of sensor chip 350.
Step S9 (heating): sensor chip 350 is heated 5 minutes with the hot-plates of 80 DEG C, makes to remain in the aqueous solution evaporate on sensor chip 350.
Step S10 (cleaning): with pure water cleaning sensor chip 350, remove the remaining m-phenylenediamine aqueous solution, and blow away liquid with nitrogen.
Step S11 (removal protecting materials): peel the masking film be attached on the F2 of the back side.
Above, by the operation of step S1 ~ S11, the mensuration face F1 of sensor chip 350 forms the aromatic polyamide film 351 with uniform thickness (such as about 70nm).
Fig. 4 (a) represents the chemical structural formula being formed in the aromatic polyamide film 351 on the mensuration face F1 of sensor chip 350 by the operation of above-mentioned steps S1 ~ S11.The aromatic polyamide film 351 with this chemical structural formula has been formed on the mensuration face F1 of sensor chip 350, can be confirmed by such as infrared absorption spectrum.
In embodiment 1, interfacial polymerization aromatic polyamide monomer and after interface defines polymeric membrane, this polymeric membrane is transferred on the mensuration face F1 of sensor chip 350.Now monomer not only can adopt above-mentioned combination, can also adopt the combination of aromatic dicarboxylic acid muriate or aromatic tricarboxylic acids muriate and aromatic diamine or aromatic triamine.
In addition, in embodiment 1, employ silane coupling agent to improve the close property of the mensuration face F1 of aromatic polyamide film 351 and sensor chip 350, but be not limited thereto.As the method that close property improves, can also such as add the material with silicone structure at monomer or use other close property activators.
Below, use above-mentioned Fig. 2 and Fig. 4 (b) that the second case making the method for aromatic polyamide film 351 film forming on the mensuration face F1 of sensor chip 350 is described.Fig. 4 (b) is formed in the chemical structural formula of the aromatic polyamide film of the mensuration face F1 of the sensor chip 350 of embodiment 1.Aromatic polyamide film 351 such as can use method of spin coating and be formed.
First, the aromatic polyamide of solubility, such as, make 4,4'-diaminodiphenyl oxide and isophthalic acid chloride be polymerized and after having synthesized the polymeric amide with the chemical structural formula shown in Fig. 4 (b), make the polymeric amide of synthesis precipitate and become solids.Then, this solids is dissolved in good solvent (such as N-Methyl pyrrolidone), and is coated on the mensuration face F1 of sensor chip 350 by method of spin coating.Thereafter, make solvent seasoning, the mensuration face F1 of sensor chip 350 forms aromatic polyamide film 351.
In addition, during the aromatic polyamide film forming of solubility, the polymeric amide of Porous can also be formed on the mensuration face F1 of sensor chip 350.The polymeric amide of such Porous can utilize the formation such as phase separation method.
First, be used as good solvent and have the N-Methyl pyrrolidone of consistency to prepare polyamide solution with glassware for drinking water.Then, by method of spin coating by this solution coat on the mensuration face F1 of sensor chip 350, generate liquid film.Thereafter, sensor chip 350 is put into the water vapor of high humidity, thus the water in a part for N-Methyl pyrrolidone and water vapor is replaced, produce in liquid film and be separated.Now, the polymeric amide not being dissolved in water is not present in the part of water.When being heated in this condition more than 150 DEG C, solvent (N-Methyl pyrrolidone and water) is removed, and the part that water exists becomes emptying aperture and forms the polymeric amide of Porous.
Like this, by using the polymeric amide of Porous, the surface-area being formed in the aromatic polyamide film 351 on the mensuration face F1 of sensor chip 350 becomes large, and the sensitivity of mensuration improves.
Below, use Fig. 5 that the example being arranged on the mounting structure of the adsorptive capacity determination sensor 35a of adsorptive capacity determination part 35 is described.Fig. 5 is the sectional view being arranged on an example of the mounting structure of the adsorptive capacity determination sensor 35a of adsorptive capacity determination part 35 representing embodiment 1.
In order to make the dirt reason material contained by the condensed water that flows in the looped pipeline road LS2 shown in above-mentioned Fig. 1 be adsorbed in adsorptive capacity mensuration face F1 measuring adsorbed dirt reason material with adsorptive capacity determination sensor 35a, need to adopt mensuration face F1 and the structure that condensed water contacts, back side F2 does not contact with condensed water flowed in the LS2 of looped pipeline road.In addition, because the resonant frequency of sensor chip significantly can change due to the change of envrionment temperature, so the variation of ambient temperature of adsorptive capacity determination sensor 35a is preferably suppressed in less than 0.1 DEG C.
There is the external rings 380 of bottom tube-like to be screwed in the screw of run-through piping wall PMf, and fix with the state of through pipe arrangement wall PMf, chimeric in the inner side of this external rings 380 roughly columned inlay 381 is installed.External rings 380 becomes pipe arrangement private side, the i.e. mode of condensed water side with bottom 380a and is installed on pipe arrangement, offers communicating pores 380b in the centre of bottom 380a.
In addition, relative in the downside of the bottom 380a with external rings 380, on the upper surface 381a of the inlay 381 of the inner side that is entrenched in external rings 380, form the O type circle 382a of the annular be such as made up of elastic component.In addition, at the bottom 380a of external rings 380, in the side that the upper surface 381a with inlay 381 is relative, in the mode that the O type circle 382a with inlay 381 is relative, form the O type circle 382b of the annular be such as made up of elastic component.
And, clamp adsorptive capacity determination sensor 35a with the O type circle 382b of external rings 380 and the O type circle 382a of insert 381.Therefore, the diameter of circular O type circle 382a, O type circle 382b is preferably equal with the diameter (such as about 14mm) of the sensor chip forming adsorptive capacity determination sensor 35a.
In addition, adsorptive capacity determination sensor 35a is clamped into the 380a side, bottom that mensuration face F1 is external rings 380.By this structure, the mensuration face F1 of adsorptive capacity determination sensor 35a contacts with the condensed water circulated in pipe arrangement via the communicating pores 380b offered at bottom 380a.In addition, with the suitable pressing force clamping adsorptive capacity determination sensor 35a that can to maintain O type circle 382a, 382b and adsorptive capacity determination sensor 35a be liquid tight condition.By this structure, the back side F2 of adsorptive capacity determination sensor 35a can be avoided to contact with the condensed water flowed in pipe arrangement.
Inlay 381 be such as by resin, metal etc. formed solid cylindrical, the near surface of upper surface 381a side bury underground as temperature control component Peltier element 384 and measure the temperature sensor 384a of the temperature near Peltier element 384.Peltier element 384 is controlled by control device, the temperature that temperature sensor 384a measures is maintained the temperature (such as the temperature preset being maintained in the limit of error of 0.1 DEG C) preset.By this structure, the envrionment temperature that can maintain adsorptive capacity determination sensor 35a immobilizes, thus can suppress the temperature variation of the resonant frequency of sensor chip.
In addition, temperature sensor 384a is not limited to be embedded in the structure in inlay 381.Such as temperature sensor 384a also can be configured in the vicinity of adsorptive capacity determination sensor 35a and measure the temperature of the vicinity of adsorptive capacity determination sensor 35a.
In addition, on the O type circle 382a of upper surface 381a being formed in inlay 381, be arranged to the contact 382a1 of the gold electrode be formed on the sensor chip of adsorptive capacity determination sensor 35a the part covering circular O type circle 382a.Contact 382a1 and the such as distribution wire 383 in inlay 381 is electrically connected, and sensor chip is applied to the voltage of regulation.In addition, the resonant frequency of adsorptive capacity determination sensor 35a is measured via contact 382a1 and wire 383.
In addition, inlay 381 is entrenched in the inner side of external rings 380, and by with screw member 385b, from the outside of pipe arrangement, the anti-avulsion plate 385a be fixed on external rings 380 prevents from coming off.In addition, inlay 381 also can be pressed into the inner side of external rings 380 by the pressing force specified.
Like this, according to embodiment 1, can evaluate the water quality for feedwater being transported to RO membrane module 32, be to the optimal pretreated operating condition of this water quality by the state modulator of pretreatment portion 20, therefore, it is possible to reduce the generation of the dirt of RO film.Thereby, it is possible to improve seawater desalination system 1 make water-based energy.Further, the number of times of the face cleaning of RO film and the element replacement of RO membrane module 32 can be reduced, in addition, the addition of agglutinant etc. can be reduced, therefore, it is possible to reduce the operating cost of seawater desalination system 1.That is, the cost of water treatment of water treatment system can be reduced.
Embodiment 2
In order to reduce the operating cost of seawater desalination system 1, need to recover to make the strainability of RO film at reasonable time cleaning RO membrane module 32.When cleaning frequency is few, strainability does not fully recover due to cleaning sometimes, causes the replacement of element of RO membrane module 32.But, when contrary cleaning frequency is many, due to clean bring liquid expense, RO membrane module 32 cannot use and life-span of making the RO film that the water yield declines and causes with the RO film deterioration of cleaning of causing reduces in cleaning, operating cost increases.
In the past, in order to determine that cleaning period monitors the intermembranous pressure reduction of RO membrane module 32, clean RO membrane module 32 when intermembranous pressure reduction has risen to film manufacturer's recommendation value.But, when significant rising has appearred in intermembranous pressure reduction, also can not recover even if sometimes clean RO membrane module 32 strainability.
Therefore, before in dirt development, significant rising appears in intermembranous pressure reduction, need detect the deterioration of RO film at the initial stage formation stages of dirt and clean RO membrane module 32.Therefore, measuring the adhesion amount being attached to dirt reason material on RO film, the cleaning period determining RO membrane module 32 is effective for the operating cost reducing seawater desalination system 1.
At RO membrane module 32, utilize cross-flow filtration mode separate dirt reason material, therefore discharge the condensed water containing dirt reason material from RO membrane module 32.Like this, being divided into for the dirt reason material that contains in feedwater the part that is attached to RO film and being included in condensed water from the part that RO membrane module 32 is discharged of RO membrane module 32 is transported to.
Therefore, in example 2, measure the quality of the quality for the dirt reason material contained in feedwater being transported to RO membrane module 32 and the dirt reason material contained from the condensed water that RO membrane module 32 is discharged, and calculate both differences, measure the adhesion amount of the dirt reason material be attached on RO film thus.At this, the quality of the dirt reason material contained in condensed water, owing to considering the enrichment factor of the condensed water in RO membrane module 32, adopt be converted into make the water yield of condensed water concentrate before, the value of the water yield for feedwater that is transported to RO membrane module 32.
Use Fig. 6 that an example of seawater desalination system 2 is described.Fig. 6 is the sketch chart of an example of the structure of the seawater desalination system 2 representing embodiment 2.
As shown in Figure 6, in seawater desalination system 2, be provided with the secondary adsorptive capacity determination sensor 35c of the main adsorptive capacity determination sensor 35b measuring the quality for the dirt reason material contained in feedwater being transported to RO membrane module 32 and the quality measuring the dirt reason material contained in condensed water.Main adsorptive capacity determination sensor 35b is arranged on adsorptive capacity determination part 40, is carried the confession feedwater of being carried to RO membrane module 32 by pipe arrangement from the valve VL6 of the back segment being arranged on RO film confession feed trough 23 by pump 39.
Use Fig. 7 and Fig. 8 that the method in the cleaning period determining RO membrane module 32 is described below.
Fig. 7 is the graphic representation of the water flowing temporal correlation of the adsorptive capacity Wc (solid line) of the adsorptive capacity Wb (dotted line) of the dirt reason material representing main adsorptive capacity determination sensor 35b and the dirt reason material of secondary adsorptive capacity determination sensor 35c.
Be connected with the secondary adsorptive capacity determination sensor 35c of condensed water, water yield time per unit being flow through the mensuration face of secondary adsorptive capacity determination sensor 35c be converted into condensed water be concentrated before the water yield, make time per unit flow through the water yield for feedwater in the mensuration face of main adsorptive capacity determination sensor 35b equal with the water yield that time per unit flows through the condensed water in the mensuration face of secondary adsorptive capacity determination sensor 35c.That is, because condensed water is concentrated, so the adsorptive capacity Wc of the dirt reason material of secondary adsorptive capacity determination sensor 35c becomes the adsorptive capacity Wb of the dirt reason material higher than main adsorptive capacity determination sensor 35b, therefore this is revised.
What be transported to RO membrane module 32 deducts the quality after the quality of the dirt reason material be attached on RO film for the quality of dirt reason material contained in feedwater, is the quality of dirt reason material contained in condensed water.Therefore, as shown in Figure 7, the adsorptive capacity Wc of the dirt reason material of secondary adsorptive capacity determination sensor 35c is less than the adsorptive capacity Wb of the dirt reason material of main adsorptive capacity determination sensor 35b.That is, the poor Δ W (Wb-Wc) of the adsorptive capacity Wc of the adsorptive capacity Wb of the dirt reason material of main adsorptive capacity determination sensor 35b and the dirt reason material of secondary adsorptive capacity determination sensor 35c is the adhesion amount of the dirt reason material be attached on RO film.
Fig. 8 is the graphic representation of the water flowing temporal correlation of the adhesion amount Δ W representing the dirt reason material be attached on RO film.
Evaluated with the dependency of the adhesion amount Δ W being attached to the dirt reason material on RO film by service data to RO membrane module 32 (intermembranous pressure reduction and through the water yield etc.), the threshold value of adhesion amount Δ W of the cleaning period of RO membrane module 32, setting dirt reason material can be determined.In fig. 8, the threshold value making the adhesion amount Δ W of dirt reason material as an example is 300ng/cm
2.Like this, by determining the cleaning period of RO membrane module 32, RO membrane module 32 can be cleaned in the period be applicable to, thus the operating cost of seawater desalination system 2 can be reduced.
In addition, following method is described in the embodiment 4 of above-mentioned patent documentation 1, namely sensor is set in the upstream of assembly, measure the quality for the dirt reason material contained in feedwater being transported to assembly, and with this measured value for benchmark, evaluate the water quality for feedwater being transported to assembly, determine the cleaning period of assembly.
But, as mentioned above, be transported to being divided into for the dirt reason material that contains in feedwater the part that is attached on RO film and being included in condensed water from the part that RO membrane module is discharged of RO membrane module 32, therefore, compared with above-mentioned patent documentation 1, embodiment 2 more can determine cleaning period accurately.
Like this, according to embodiment 2, by measuring the adhesion amount Δ W of the dirt reason material be attached on RO film accurately, RO membrane module 32 can be cleaned in the period be applicable to, therefore, it is possible to reduce the operating cost of seawater desalination system 2.That is, the cost of water treatment of water treatment system can be reduced.
Above, specifically understand the invention made by the present inventor according to embodiment, but the present invention is not limited to above-mentioned embodiment, can carry out various change in the scope not departing from its main points.
Description of reference numerals
1,2 seawater desalination systems
10 seawater water intaking portions
11 intake pipes
12 water pumps
13 former tanks
20 pretreatment portions
21 sand filtration tanks
22 hyperfiltration membrane assemblies
22a water transfer pump
23 RO films are for feed trough
24 liquid medicine injection systems
24a sterilant injection unit
24b pH adjusting agent injection unit
24c agglutinant injection unit
With reductive agent injection unit in 24d
30 desalination portions
31 high-pressure pump
32 RO membrane modules
33 fresh-water tanks
34 energy recycle devices
35 adsorptive capacity determination parts
35a adsorptive capacity determination sensor
The main adsorptive capacity determination sensor of 35b
The secondary adsorptive capacity determination sensor of 35c
36 concentrated tanks
37 pumps
39 pumps
40 adsorptive capacity determination parts
350 sensor chips
350a AT cutting crystal plate
350b gold electrode
350c silicon dioxide film
351 aromatic polyamide films
380 external rings
Bottom 380a
380b communicating pores
381 inlays
381a upper surface
382a O type circle
382a1 contact
382b O type circle
383 wires
384 Peltier elements
384a temperature sensor
385a anti-avulsion plate
385b screw member
F1 measures face
The F2 back side
LM main line
LS1, LS2 looped pipeline road
PMf pipe arrangement wall
VL1, VL2, VL3, VL4 variable valve
VL5, VL6 valve
Claims (7)
1. a water treatment system, is characterized in that,
Described water treatment system possesses:
Separatory membrane, described separatory membrane filters the first water containing separated material;
Assembly, described assembly has described separatory membrane; And
First sensor, described first sensor has at mensuration mask the first film be made up of the material identical with the surfacing of described separatory membrane,
Described first moisture being transported to described assembly becomes second water of discharging from described assembly through described separatory membrane and the face along described separatory membrane, not through described separatory membrane just from the 3rd water that described assembly is discharged,
By making described 3rd water flow through described first sensor, measure the first adsorptive capacity being adsorbed on the described separated material contained in described 3rd water in the mensuration face of described first film of described first sensor.
2. water treatment system according to claim 1, is characterized in that,
Described water treatment system also possesses the second sensor, and described second sensor has at mensuration mask the second film be made up of the material identical with the surfacing of described separatory membrane,
By making described first water flow through described second sensor, measure the second adsorptive capacity being adsorbed on the described separated material contained in described first water in the mensuration face of described second film of described second sensor,
According to described first adsorptive capacity measured by described first sensor and described second adsorptive capacity by described second sensor determination, calculate the quality of the described separated material being adsorbed in described separatory membrane.
3. water treatment system according to claim 1 and 2, is characterized in that,
Described separatory membrane is reverse osmosis membrane.
4. water treatment system according to claim 1 and 2, is characterized in that,
Described first sensor is quartz crystal unit,
Described first adsorptive capacity being adsorbed in the described separated material of described first sensor measures according to the micro-balance method of quartz crystal unit.
5. water treatment system according to claim 2, is characterized in that,
Described second sensor is quartz crystal unit,
Described second adsorptive capacity being adsorbed in the described separated material of described second sensor measures according to the micro-balance method of quartz crystal unit.
6. water treatment system according to claim 1, is characterized in that,
With described first adsorptive capacity measured by described first sensor for benchmark, determine the pretreatment condition of described first water.
7. water treatment system according to claim 2, is characterized in that,
To be attached to the described quality of the described separated material of described separatory membrane for benchmark, determine the cleaning period of described assembly.
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| CN105445135B (en) * | 2015-11-14 | 2019-03-05 | 时代沃顿科技有限公司 | A method of detection wet type reverse-osmosis membrane element is dry |
| JP2019027961A (en) * | 2017-07-31 | 2019-02-21 | 国立大学法人東北大学 | Quantitative evaluation method for scale adhesion |
| KR20210011366A (en) * | 2018-05-21 | 2021-02-01 | 쿠리타 고교 가부시키가이샤 | Reverse osmosis system diagnostic device |
| JP6645535B2 (en) * | 2018-05-21 | 2020-02-14 | 栗田工業株式会社 | Diagnostic device for reverse osmosis system |
| WO2019225308A1 (en) * | 2018-05-21 | 2019-11-28 | 栗田工業株式会社 | Reverse osmosis system diagnostic device |
| JP6662407B2 (en) * | 2018-05-21 | 2020-03-11 | 栗田工業株式会社 | Diagnostic device for reverse osmosis system |
| SG11202011730WA (en) * | 2018-06-18 | 2021-01-28 | Mitsubishi Electric Corp | Operation support device and operation support method |
| CN112811721B (en) * | 2020-12-31 | 2023-02-10 | 新疆协鑫新能源材料科技有限公司 | Comprehensive water-saving production system and method for whole process of polycrystalline silicon production by GCL method |
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| JP2011255301A (en) * | 2010-06-08 | 2011-12-22 | Japan Organo Co Ltd | Method for evaluating contamination of separation membrane, separation membrane operation control method utilizing the same, and filter |
| JP2012196590A (en) * | 2011-03-18 | 2012-10-18 | Asahi Kasei Chemicals Corp | Filtration membrane, cleaning means of filtration membrane, and selection method of pretreat means |
| JP2013137279A (en) * | 2011-12-28 | 2013-07-11 | Hitachi Plant Technologies Ltd | Water quality evaluation method, control method for water treatment system, and water treatment system |
| JP2013193075A (en) * | 2012-03-23 | 2013-09-30 | Hitachi Ltd | Desalination system |
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