CN101042347B - Method for evaluating feed water of reverse osmosis membrane apparatus, and method and apparatus for treating water - Google Patents
Method for evaluating feed water of reverse osmosis membrane apparatus, and method and apparatus for treating water Download PDFInfo
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- CN101042347B CN101042347B CN2007100881818A CN200710088181A CN101042347B CN 101042347 B CN101042347 B CN 101042347B CN 2007100881818 A CN2007100881818 A CN 2007100881818A CN 200710088181 A CN200710088181 A CN 200710088181A CN 101042347 B CN101042347 B CN 101042347B
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Abstract
The present invention provides a method for evaluating reverse osmosis membrane supply water, a method for water treatment and a water treatment device. The invention can evaluate the quality of reverse osmosis membrane supply water in a short time simply and accurately, thereby operating the water treatment device with the reverse osmosis membrane device stably in a long term. The reverse osmosis membrane supply water evaluation method for evaluating the quality of water supplied to the reverse osmosis membrane device is characterized in that the method detects fluorescence intensity of the reverse osmosis membrane supply water and evaluates the water quality based on the fluorescence intensity detection result. The water treatment device with the reverse osmosis membrane device is operated and managed based on the evaluation result.
Description
Technical field
The present invention relates to a kind of processed water of supplying with to reverse osmosis membrane apparatus evaluation method, by membrane separation device processed water is carried out the film separating treatment, it is separated into the method for treating water and the water disposal facility of condensed water and permeate water.
In addition, in the present invention, " reverse osmosis membrane " means " reverse osmosis membrane " of the broad sense that comprises " reverse osmosis membrane " and " filtering membrane ".
Background technology
I. because the prevention rate height of the solute of reverse osmosis membrane, the permeate water that obtains by reverse osmosis membrane processing has good water quality, so can be used in various uses effectively again.But on the other hand, because a fluid stream that sees through of film reduces along with the continuation of handling, on-stream pressure rises, so in this case, in order to recover the performance of film, needs processing out of service and that clean reverse osmosis membrane.
(i) in the past, adopting reverse osmosis membrane to carry out under the situation of water treatment, in order to reduce the cleaning frequency of this film, improve treatment effeciency, MF value (the Desalination that proposes by the mouth of a valley with the defined aquatic organism fouling index of JIS K3802 (FI), the defined sludge density index (SDI) of ASTM D4189 (SDI) or the easier evaluation method of conduct, vol.20, p.353-364,1977) estimate supply water towards the reverse osmosis membrane module.In order to make this value for below the set value, for example FI value or SDI value are 3～4 or below it, implement following method as required, promptly, by implementing pre-treatment, reverse osmosis membrane is supplied with water carry out to a certain degree clarification, avoid the reduction that sees through a fluid stream in the reverse osmosis membrane module and the drawbacks such as rising of on-stream pressure, continual and steady operation.
FI value, SDI value, MF value all are to the regulation filtration time of secondary filter film (" millipore filter " of the Japanese MILIIPORE of most usually employing company) when filtering reverse osmosis membrane supply water by 0.45 μ m, and calculate based on this detected value.As pre-treatment, under the situation that for example is plant chimney stalk, carry out physicochemical processing such as biological processing, charcoal absorption, ultrafiltration such as activated sludge process usually.
But following reverse osmosis membrane is supplied with water even FI value or SDI value, MF value are set value, also has the situation of the rising that produces the reduction that sees through a fluid stream or on-stream pressure on the reverse osmosis membrane prematurely.Promptly, because the evaluation of existing FI value, SDI value or MF value is by catching the SS (outstanding turbid solid) in the reverse osmosis membrane supply water, and it is reflected on the filtration time, so judging based on SS on the quality of supplying with water as reverse osmosis membrane is effectively, but on filtration time, do not reflect the deliquescent dirt composition in the former water.Therefore, can not correctly judge the quality of supplying with water as reverse osmosis membrane based on molten interaction of depositing the chemistry of material.
(ii) open in the 2004-188387 communique, disclose reverse osmosis membrane is supplied with the water water flowing in polyamide-based membrane filter, estimate the method for supplying with the quality of water as reverse osmosis membrane by the size of filtration resistance the spy.If in this way, by being used in the polyamide-based membrane filter of reverse osmosis membrane same materials, molten existence is supplied with in the water and is adsorbed on the reverse osmosis membrane and the membrane contaminant matter that becomes obstacle also can detect.But polyamide-based membrane filter is accurate filtering membrane, even reverse osmosis membrane is identical with raw material, has boundary in the reduction that sees through a fluid stream on the prediction reverse osmosis membrane etc., is not the management that can carry out sufficient reverse osmosis membrane supply water.And, also there be operation complexity itself, the problem that needs man-hour estimated.
(iii) open in the flat 10-286445 communique the spy, following method is disclosed, diffusion barrier is supplied with the water water flowing to main film module and having in the secondary film module of membrane area less than main film module, the operating state of main film module and secondary film module is compared, thus differentiate the reduction that sees through the water yield on main film module and secondary film module or its both sides result from membrane separation device former water or result from equipment self.But.This method is to differentiate the reduction that sees through the water yield that produces on main film module or secondary film module or both sides' the module to come from the bad method that film is supplied with the deterioration of water water quality or come from device, is not the method for judging the water quality quality of film supply water.
Suppose this method is used for the situation that reverse osmosis membrane is supplied with the evaluation of water, because all long-term continuously water flowing on main film module and the secondary film module, so when on detecting secondary film module, seeing through the reduction of a fluid stream, on main film module, see through the water yield and also reduce.Once reduced if see through the water yield on reverse osmosis membrane, and cleaned the irreversible pollution that can not recover even then produce with medicine, It dones't help the situation for this method.
And, under the continuous water flowing situation to the film module, be not limited on main film module, secondary film module, to detect and supply with water through the moment of the reduction of the water yield and worsen certainly.On the other hand, supply with under the situation that water is for example draining etc. at reverse osmosis membrane, water quality changes constantly, need be in this constantly instant water quality assessment, but open in the method for flat 10-286445 communique to the spy on the film module will supplying with the continuous water flowing of water, can not judge that when see through the water yield reduces, can not fully estimate the water quality of supply water constantly.
(iv) open in the 2005-103431 communique the spy, disclose evaluation in service at reverse osmosis membrane apparatus and supplied to water in this reverse osmosis membrane apparatus (hereinafter referred to as " main reverse osmosis membrane apparatus ") is supplied with the quality of water as reverse osmosis membrane method, this reverse osmosis membrane is supplied with water supply to the evaluation different intermittently with in the reverse osmosis membrane apparatus with this main reverse osmosis membrane apparatus, detect this evaluation begins the reverse osmosis membrane supply water in the stipulated time of back with the water flowing in the reverse osmosis membrane apparatus permeability, this detected value and predefined reference value are compared, supply with water thereby estimate this reverse osmosis membrane.
According to this method, estimate with in the reverse osmosis membrane apparatus by reverse osmosis membrane being supplied with interrupted the supplying to of water, reverse osmosis membrane in the stipulated time at its water flowing initial stage is supplied with the permeability of water, particularly compared through the water yield and reference value, thereby can easy at short notice, correctly estimate the quality of supplying with water as reverse osmosis membrane.
But this method is supplied with water owing to will supply with the water water flowing to reverse osmosis membrane according to its water permeability evaluation, thus can carry out high-precision evaluation to the bigger supply water of pollution level, but can not estimate the evaluation of the lower water supply of pollution level accurately.And, the evaluation reverse osmosis equipment different with main reverse osmosis membrane apparatus is set, the complicated and maximization of device.In addition, in this method, the reverse osmosis membrane of more amount be supplied with the water water flowing to estimating with in the reverse osmosis membrane apparatus, spended time is wanted in water flowing, so estimate also spended time.
II. in the manufacturing works of electron devices such as semiconductor, liquid crystal, in the water treatment of the cleaning draining of the electron device that reclaims, adopt Water Purifiers.In this Water Purifiers,, adopt reverse osmosis membrane (RO) device as the device that is used for removing dechlorination class or organic substance (TOC).
In recent years, the use amount of the non-ionic surfactant in these factories increases, and the influx of non-ionic surfactant in Water Purifiers also increases.If not the ion interface activating agent supplies in the reverse osmosis membrane apparatus, even Wei Liang concentration then, reverse osmosis membrane is also significantly polluted, and the water treatment amount of reverse osmosis membrane apparatus significantly reduces.Therefore, ozone oxidation tower, activated carbon adsorber etc. are set, carry out the decomposition and the absorption of non-ionic surfactant to remove, to suppress the reduction of this water treatment amount by upstream at reverse osmosis membrane apparatus.
When this Water Purifiers of operation, detect the processed resistivity of water and organic substance (TOC) concentration that supply in the reverse osmosis membrane apparatus, carry out operational management based on this testing result.
As mentioned above, processed water is being carried out under the situation of water treatment, detecting the water quality that supplies to the processed water self in the reverse osmosis membrane apparatus, carrying out the water quality assessment of processed water based on this testing result with reverse osmosis membrane apparatus.Therefore, exist like that as described below, spended time in the water quality assessment of processed water is difficult to detect the organic problem of the trace that is included in the processed water.
That is, in above-mentioned I, a part of water flowing of supplying to the processed water in the reverse osmosis membrane apparatus to detecting with on the film, is carried out the evaluation of processed water based on filtration time, filtration resistance or the testing result that sees through the water yield.So, because water flowing is identical with water flowing to the water in the reverse osmosis membrane apparatus to detecting with the water on the film, so organism is gradually attached to detecting with on the film organic detection spended time.
And, in above-mentioned II, detect the processed resistivity of water and organic substance (TOC) concentration that supply in the reverse osmosis membrane apparatus, carry out the evaluation of processed water based on this testing result.Therefore, if the organic amount in the processed water is a trace, then can not detect this organism.But, even the organic amount in the processed water is a trace, organism is arranged, so a side that contacts with condensed water produces the aquatic organism dirt from reverse osmosis membrane owing to concentrate in the condensed water.
For example, adopting under the situation of polyamide-based reverse osmosis membrane as reverse osmosis membrane, when this polyamide-based reverse osmosis membrane and concentration are that the alkyl phenylate type non-ionic surfactant of 200ppb sa TOC is when contact, through water yield reduction.Because reverse osmosis membrane moves with the recovery of 75～90% (4 times concentrate～10 times and concentrate) usually, so if in processed water, contain the above-mentioned non-ionic surfactant of 20～50ppb, then the concentration of this non-ionic surfactant in the condensed water surpasses 200ppb, condensed water one side at reverse osmosis membrane produces the aquatic organism dirt, also may the operation of reverse osmosis membrane apparatus be exerted an influence.But because the detection of the non-ionic surfactant of tens of ppb levels is very difficult, under the situation that the concentration of carrying out processed water detects, the non-ionic surfactant that detects this concentration level is difficult.
Summary of the invention
The object of the present invention is to provide a kind of reverse osmosis membrane to supply with the evaluation method of water, can supply to the evaluation of water quality of the processed water of reverse osmosis membrane apparatus accurately, and provide a kind of method for treating water and water disposal facility, by moving based on above-mentioned evaluation result, can avoid the reduction that sees through a fluid stream of diffusion barrier in advance, operation reverse osmosis membrane apparatus steady in a long-term.
The evaluation method that reverse osmosis membrane of the present invention is supplied with water is to estimate the method that the reverse osmosis membrane that supplies in the reverse osmosis membrane apparatus is supplied with the quality of water, it is characterized in that, detect that this reverse osmosis membrane is supplied with water or from the fluorescence intensity of the condensed water of this reverse osmosis membrane apparatus, based on the testing result of this fluorescence intensity, estimate reverse osmosis membrane and supply with water.
The evaluating apparatus that reverse osmosis membrane of the present invention is supplied with water is to estimate the device that the reverse osmosis membrane that supplies in the reverse osmosis membrane apparatus is supplied with the quality of water, it is characterized in that, have fluoroscopic examination mechanism, detect that this reverse osmosis membrane is supplied with water or from the fluorescence intensity of the condensed water of this reverse osmosis membrane apparatus.
Method for treating water of the present invention is to remove mechanism by organism to after containing organic processed water and having carried out handling, carry out the film separating treatment by reverse osmosis membrane apparatus, be separated into the method for condensed water and permeate water, it is characterized in that, detection is towards the supply water of this reverse osmosis membrane apparatus or from the fluorescence intensity of the condensed water of this reverse osmosis membrane apparatus, based on this testing result, control described organism and remove mechanism.
The feature of water disposal facility of the present invention is to comprise: organism is removed mechanism, contains organic processed water and imports wherein; Reverse osmosis membrane apparatus carries out the reverse osmosis membrane separation processing to the water of being removed by this organism after mechanism handles, and is separated into condensed water and permeate water; Fluorescence intensity testing agency is detected towards the supply water of this reverse osmosis membrane apparatus or from the fluorescence intensity of the condensed water of this reverse osmosis membrane apparatus; Control gear based on the testing result of this fluorescence intensity testing agency, is controlled described organism and is removed mechanism.
Supply with the evaluation method and the evaluating apparatus of water according to reverse osmosis membrane of the present invention, by detecting that reverse osmosis membrane is supplied with water or from the fluorescence intensity of the condensed water of reverse osmosis membrane apparatus, testing result based on this fluorescence intensity is estimated, and can simply, correctly estimate the quality of supplying with water as reverse osmosis membrane at short notice.And, according to the operation management method that carries out the water disposal facility of the present invention of operational management based on this evaluation result, can keep the high a fluid stream that sees through in the reverse osmosis membrane apparatus, long-term continual and steady operation.
In a mode of the evaluation method of membrane separation device processed water of the present invention and device, owing to estimate the water quality of this processed water, so the organism of the trace that can detect in the processed water to be contained based on the testing result of the organic fluorescence intensity in the condensed water.
That is,, in condensed water, also concentrated organism even the organism in the processed water is micro-.Therefore, even the organic concentration in the processed water detects more than the boundary value so long as the organic concentration in the condensed water is concentrated to less than detecting boundary value, then can detect organism.Therefore, can carry out the water quality assessment of processed water based on the testing result of the organic concentration in this condensed water accurately.
According to method for treating water of the present invention and water disposal facility, owing to remove mechanism based on the organic testing result control organism that is contained in feed water of reverse osmosis membrane apparatus or the condensed water, so can handle the organism in the processed water effectively.Its result can keep the high a fluid stream that sees through in the reverse osmosis membrane apparatus, long-term continual and steady operation.
Removing mechanism as above-mentioned organism, can be by from biological treatment device, the oxygenolysis device, coacervation treating device, and select in the group that constitutes of absorbent charcoal adsorber at least a.
Description of drawings
Fig. 1 sees through a fluid stream time history plot for the reverse osmosis membrane of expression among the embodiment.
Fig. 2 is the system diagram of the embodiment of expression water disposal facility of the present invention.
Fig. 3 is the system diagram of the different embodiment of expression water disposal facility of the present invention.
Fig. 4 is the system diagram of the another kind of embodiment of expression water disposal facility of the present invention.
Fig. 5 is the synoptic diagram of water quality detecting device.
The fluorescence intensity time history plot that Fig. 6 sends from the standard fluorescence body for expression.
Embodiment
Below, the evaluation method of reverse osmosis membrane supply water of the present invention and the embodiment of evaluating apparatus and method for treating water and device are described in detail.
In the 1st embodiment of the present invention, extraction supplies to the part of the reverse osmosis membrane supply water in the reverse osmosis membrane apparatus, the evaluating apparatus that adopts reverse osmosis membrane to supply with water detects the fluorescence intensity that this reverse osmosis membrane is supplied with water, estimates reverse osmosis membrane based on the testing result of this fluorescence intensity and supplies with water.
The fluorophotometric method of this fluorescence intensity exceeds 1 to 2 order of magnitude owing to compare sensitivity with the ultraviolet absorption photometry of detection, so can carry out high-precision analysis.
Evaluating apparatus as above-mentioned reverse osmosis membrane supply water can adopt common fluorescence analyser.And, also can adopt acquisition by excitation light wavelength, the wavelength of fluorescence and the device of the three-dimensional fluorescence wave spectrum that fluorescence intensity constitutes, in this case, can detect the different multiple membrane contaminant matter of wavelength of fluorescence simultaneously.
As everyone knows, be included in the molten organism polluted membrane of depositing in the reverse osmosis membrane supply water, the membrane filtration a fluid stream of reverse osmosis membrane apparatus is reduced.But the molten organism of depositing that is included in the reverse osmosis membrane supply water is diversified, is not that these all molten organism of depositing of expression have high correlativity in the reduction of membrane filtration a fluid stream.
The result that the present inventor studies with keen determination shows, supplying with water at reverse osmosis membrane is under the situation of biological treatment of water, and the specific molten organism of depositing has remarkable influence to the reduction of membrane filtration a fluid stream, and fluorescence analysis is effective this molten depositing in the organic detection.
Promptly, supplying with water at reverse osmosis membrane is under the situation of biological treatment of water, to supply with the wavelength of fluorescence that water sends from reverse osmosis membrane be 290～350nm, in particular for 290～335nm, especially be that 300～315nm molten deposited organism the reduction of membrane filtration a fluid stream is had remarkable influence.Therefore,, estimate, can simply, correctly estimate the quality that reverse osmosis membrane is supplied with water at short notice based on its testing result by detecting the fluorescence intensity of above-mentioned wavelength of fluorescence.At this, both can be with the integration of the crest of above-mentioned wavelength region may as fluorescence intensity, also can be with the peak value of the certain wavelengths in the above-mentioned wavelength region may as fluorescence intensity.
And, supplying with water in reverse osmosis is under the situation of biological treatment of water, preferably excitation wavelength from the exciting light of water irradiation to reverse osmosis membrane that supply with is 220～300nm, particularly preferably be 250～300nm, more preferably be 270～280nm, in this case, can more correctly estimate the quality that reverse osmosis membrane is supplied with water.
In addition, in the present invention, " biological treatment of water " is the water after adopting microorganism to the water treatment that contains organic property material.Biological treatment can be the gas processing, the property processing of being sick of, with and any of combination.
In the present invention, the material of the reverse osmosis membrane that is used for reverse osmosis membrane apparatus is had no particular limits, for example can list polyamide-based reverse osmosis membrane, cellulose esters is a reverse osmosis membrane, and polysulfones is a reverse osmosis membrane, and polyimide is a reverse osmosis membrane etc.Form to reverse osmosis membrane also has no particular limits, and can adopt any of phase transformation film or composite membrane.Wherein, can be suitable for adopting becoming on the ultrafiltration membrane of film support and use polysulfones, on tight zone, use crosslinked polyamide, wire polyamide, the polyamide-based reverse osmosis membrane of poly-piperazine etc.
And, the kind of the film module of reverse osmosis membrane apparatus is also had no particular limits, for example can enumerate the screw type module, hollow line pattern piece, planar film pattern piece, cast module etc.
In the present invention, the water quality of water is supplied with because of reverse osmosis membrane in the interval of carrying out the evaluation that reverse osmosis membrane supplies with water, and the situation of its change is with pre-treating method and different, but preferably for example with every day about 1～50 time frequency estimate.
In the operation management method of water disposal facility of the present invention, supply with the evaluation method or the evaluating apparatus of water by this reverse osmosis membrane of the present invention, reverse osmosis membrane is supplied with the quality of water and estimated, the operation of the water disposal facility that comprises reverse osmosis membrane apparatus is managed based on its result.This management method is had no particular limits, for example can list the control that reverse osmosis membrane is supplied with the service condition of the control of pre-treatment condition of water and/or main reverse osmosis membrane apparatus.
The pre-treating method of reverse osmosis membrane being supplied with water has no particular limits, and for example can list bioremediations such as activated sludge process, photooxidation method, the wet type contact oxidation method, coagulation sedimentation method, the floating method that goes up of pressurization, active carbon adsorption, secondary filter method, ultrafiltration method etc.These pre-treating methods can adopt a kind of separately, also can make up adopt two or more.The control of pre-treatment condition is by newly adding, replace, delete these pretreating devices, and the methods such as treatment conditions that perhaps change pretreating device are separately implemented.
And, service condition for reverse osmosis membrane, enumerated the operating pressure of reverse osmosis membrane apparatus, the water recovery, back washing frequency, the adjustment of cleaning frequency etc. etc., control these conditions by the evaluation result of supplying with water based on reverse osmosis membrane, can prevent to see through the reduction that a fluid stream is passed in time, keep the high a fluid stream that sees through, carry out the stable operation of reverse osmosis membrane apparatus for a long time.
One of the operation management method of water disposal facility for example descends.Adopt reverse osmosis membrane to supply with the evaluating apparatus of water, detect the relative intensity of fluorescence (QSU) that supplies to the water (reverse osmosis membrane supply water) in the reverse osmosis membrane apparatus,,, for example adopted quinine sulfate solution as reference solution (standard control solution) at this.Based on the detected value of this relative intensity of fluorescence, the quality of judgement water quality as described below, and enforcement operational management as described below.
Relative intensity of fluorescence (QSU) water operation and management
0～5 carries out medicine fortunately between 2～4 months cleans
5～10 can carry out medicine between 1～2 month cleans
10～20 will monitor that carrying out medicine between 1～4 week cleans
Surpassing 20 can not clean with the interior medicine that carries out in 1 week
Other examples as the operation management method of water disposal facility, under the situation of carrying out a biological disposal upon in the upstream of reverse osmosis membrane apparatus, relative intensity of fluorescence (QSU) can surpass setting, perhaps reduce the load of the biological treatment of upstream, thereby implement the oxidation processes of charcoal treatment or ozone etc.
And, also can pass through the threshold value control of relative intensity of fluorescence (QSU), carry out physics and clean (water filling) at interval and the control of the addition of agglutinant.
In the present invention, except the detection of fluorescence intensity, can also regularly detect reverse osmosis membrane and supply with all organism amounts (TOC) in the water, based on the quality of the testing result evaluating water quality of these fluorescence intensities and TOC.So, can more correctly carry out the evaluation of water quality.Detection method to all organism amounts (TOC) has no particular limits, and for example can be suitable for the above-mentioned special 2002-3625453 of hope communique, and the spy opens the disclosed method of flat 10-286445 communique.In this case, for example implement above-mentioned pre-treatment as required, making fluorescence intensity is below the set value, and all organism amounts (TOC) are below the set value, thereby can avoid the reduction of membrane filtration a fluid stream and the obstacles such as rising of on-stream pressure, continual and steady operation.
And, supply with under the situation that contains outstanding turbid solid in the water at reverse osmosis membrane, can detect this outstanding turbid solid (SS) branchs concentration, both estimate the quality of the water quality of reverse osmosis membrane supply water based on the testing result of the testing result of this outstanding turbid solid concentration and above-mentioned fluorescence intensity.
Detection method to this outstanding turbid solid (SS) has no particular limits, MF value (the Desalination that for example can pass through the defined aquatic organism fouling index of JIS K3802 (FI), the defined sludge density index (SDI) of ASTM D4189 (SDI) or propose as easier evaluation method and by the mouth of a valley, vol.20, p.353-364,1977) etc. estimate outstanding turbid solid amount.In this case, for example can implement above-mentioned pre-treatment as required, making fluorescence intensity is below the set value, and FI value, SDI value or MF value are below the set value, thereby can avoid the reduction of membrane filtration a fluid stream and the obstacles such as rising of on-stream pressure, continual and steady operation.
Below, enumerate embodiment above-mentioned the 1st embodiment of the present invention is specifically described, but the present invention then is not subjected to the qualification of following embodiment so long as do not exceed its main idea.
Embodiment 1
The detection of＜membrane filtration a fluid stream 〉
The biological treatment of water that employing is discharged from A factory, B factory and C factory to polyamide system reverse osmosis membrane (day eastern electrician's corporate system " ES-20 plain film ") water flowing, has detected the membrane filtration a fluid stream according to following condition.
Water temperature: 25 ℃
On-stream pressure: 0.5～0.7MPa
The recovery: 75%
The relation of water flowing time and membrane filtration a fluid stream has been shown among Fig. 1.
The detection of＜fluorescence intensity 〉
Extraction has been carried out fluorescence analysis from the part of the biological treatment of water of above-mentioned A factory, B factory and C factory according to following condition.
Device: the system F-4500 of Hitachi type fluorospectrophotometer
Photomultiplier transit tube voltage: 700V
Slit: 5nm (exciting light and fluorescence)
Sweep velocity: 12000nm/ branch
Numbering 1 in the table 1 be the excitation wavelength of irradiation and the wavelength of fluorescence of detection within the scope of claim 2 and 3, numbering 2 is that excitation wavelength and wavelength of fluorescence are all outside the scope of claim 2 and 3.
Numbering 3～5th in the table 2, the excitation wavelength of irradiation is 275nm, makes the situation of the wavelength of fluorescence variation of detection.
Numbering 6～6th in the table 3, the wavelength of fluorescence that detects is 300nm, makes the situation of the excitation wavelength variation of irradiation.
[table 1]
[table 2]
[table 3]
＜estimate
According to Fig. 1 as can be known, the reduction of membrane filtration a fluid stream increases with the order of C factory, B factory and A factory.
According to table 1 as can be known, all under within the scope of the invention the situation (numbering 1), fluorescence intensity increases with the order of C factory, B factory and A factory at excitation wavelength and wavelength of fluorescence, and is consistent with the reduction action of the membrane filtration a fluid stream of Fig. 1.With respect to this, all under the situation outside the scope of the present invention (numbering 2), fluorescence intensity and numbering 1 o'clock are opposite at excitation wavelength and wavelength of fluorescence, increase with the order of A factory, B factory and C factory, and be inconsistent with the membrane filtration a fluid stream reduction of Fig. 1.
According to table 2 and table 2 as can be known, in the numbering 1,4,7 of excitation wavelength within the scope of claim 2 and 3, fluorescence intensity increases with the order of C factory, B factory and A factory, and is consistent with the reduction action of the membrane filtration a fluid stream of Fig. 1.
Below, describe the method for treating water of evaluation method of the related employing processed water of the 2nd embodiment of the present invention and the embodiment of water disposal facility in detail with reference to Fig. 2 and Fig. 3.
Fig. 2 is the system diagram of this water disposal facility.
The water disposal facility of Fig. 2 is removed device 1 and reverse osmosis membrane apparatus 2 by organism and is handled and make it become permeate water containing organic processed water successively, and be included in from the organism in the condensed water of reverse osmosis membrane apparatus 2 by 3 detections of organic concentration pick-up unit, remove device 1 by the above-mentioned organism of controller 4 controls based on this testing result.
In addition, using as pure water or ultrapure water as required and then after processed from the permeate water of reverse osmosis membrane apparatus 2.And, the use such as rinse water, chilled water make-up water of removing device 1 from the condensed water of reverse osmosis membrane apparatus 2 as required as above-mentioned organism.
Remove device 1 as organism, can be biological treatment devices such as activated sludge apparatus, the ozone oxidation device, the ultraviolet ray oxidation unit, ultraviolet ray is also with oxygenolysis devices such as ozone accelerating oxidation devices, coacervation treating devices such as coalescing filter, at least a in absorbent charcoal adsorber and the ion interchange unit or with the device of its combination.
At the ozone oxidation device, ozone accelerating oxidation device in the oxygenolysis devices such as ultraviolet oxidation unit, resolves into organic acid by ozone or ultraviolet ray with organic substance, and then resolves into CO
2In coacervation treating device, carry out removing of outstanding absurd creature matter in the processed water or colloidal material etc.In absorbent charcoal adsorber, make organic substance, residual chlorine, particulate etc. are adsorbed on the activated charcoal and remove.
As reverse osmosis membrane apparatus 2, can use and the identical device of described the 1st embodiment.
In this reverse osmosis membrane apparatus 2, when removing dechlorination, remove organic substance ionic, colloidality.
As organic substance pick-up unit 3, adopt the fluorescence intensity pick-up unit.
The fluorescence intensity pick-up unit exceeds 1 to 2 order of magnitude owing to compare sensitivity with the absorption photometric pick-up unit that detects ultraviolet absorbance, so can carry out high-precision analysis.For example, in processed water, contain under the situation of alkyl phenylate type nonionic interface activating agent, because phenyl has UVA wavelength and ultraviolet ray exited-wavelength of fluorescence, so can adopt absorption photometric pick-up unit and fluorescence intensity pick-up unit both, but adopt the higher fluorescence intensity pick-up unit of sensitivity.
In addition, in processed water, contain under the situation of nonionic interface activating agent,, also make film significantly produce the aquatic organism dirt even its concentration is micro-.The result that the present inventor studies alkyl phenylate type nonionic interface activating agent with commercially available fluorescence analyser shows, in wavelength of fluorescence is the scope of 300～400nm, sends a kind of or a plurality of fluorescence.Confirmed in this scope, 300～370nm preferably, particularly there is linear correlativity between the concentration of the fluorescence intensity of the wavelength in the scope of 300～350nm and alkyl phenylate type nonionic interface activating agent, the fluorescence intensity in this scope can be converted into the concentration of alkyl phenylate type nonionic interface activating agent.Therefore, in processed water, contain under the situation of alkyl phenylate type nonionic interface activating agent, the best detection wavelength be 300～400nm, preferably be 300～370nm, particularly preferably be the fluorescence intensity of the wavelength of 300～350nm scope.
As above-mentioned fluorescence intensity pick-up unit, can adopt common fluorescence analyser.And, also can adopt acquisition by excitation light wavelength, the wavelength of fluorescence and the device of the three-dimensional fluorescence wave spectrum that fluorescence intensity constitutes, in this case, can the different multiple membrane contaminant matter (film water biofouling material) of while fluorescence intensity.
The testing result of the film water biofouling material concentration in the condensed water of the above-mentioned film water biofouling material concentration pick-up unit 3 of controller 4 receptions, based on the film water biofouling material concentration in this testing result evaluation processed water, based on this evaluation result, control above-mentioned film water biofouling matter treating device 1.
Control method to film water biofouling matter treating device 1 has no particular limits.Be under the situation of ozone oxidation device for example, ozone generation electric current is changed, control ozone generating capacity at film water biofouling matter treating device 1.At film water biofouling matter treating device 1 is under the situation of coacervation treating device, control agglutinant injection rate IR.At film water biofouling matter treating device 1 is under the situation of absorbent charcoal adsorber, based on the testing result of the film water biofouling material concentration in the condensed water, judges whether the absorption affinity of activated charcoal reaches capacity.When being judged to be when reaching capacity, controller is to switching to the water flowing that the absorbent charcoal adsorber of preparation carries out processed water from main absorbent charcoal adsorber.During this switchover operation, carry out the replacing of the activated charcoal in the main absorbent charcoal adsorber.At film water biofouling matter treating device 1 is under the situation of ion interchange unit, based on the testing result of the film water biofouling material concentration in the condensed water, be filled into regeneration of ion-exchange resin in the ion interchange unit, to the water flowing switching of the ion interchange unit of preparation etc.
Fig. 3 is the system diagram of the different embodiment of expression water disposal facility of the present invention.
The water disposal facility of Fig. 3 is by ozone oxidation groove 11, activated charcoal tower 12, coalescing filter 13, ion exchange tower 14, and reverse osmosis membrane (RO film) device 15 carries out water treatment and makes it become permeate water the processed water (low concentration discharge water) that contains film water biofouling material successively, and then carries out water treatment by 16 pairs of these permeate water of backup system and make it become ultrapure water.
In this water disposal facility, worker's water and agglutinant added in the water after being handled by activated charcoal tower 12 mix, and this mixed water is imported in the coalescing filter 10.
This water disposal facility possesses the fluorescence analyser 17 of detection from the film water biofouling material in the condensed water of reverse osmosis membrane apparatus 15.This fluorescence analyser 17 possesses the controller of the ozone generation electric current of control ozone oxidation groove 11.Part from the condensed water of reverse osmosis membrane apparatus 15 supplies to fluorescence analyser 17, detects the concentration of the film water biofouling material that contains in condensed water by this fluorescence analyser 17.Based on this testing result, the ozone generating electric current of the controller control ozone oxidation groove 11 in this fluorescence analyser 17.In addition, condensed water is as uses such as regeneration waters.
In ozone oxidation groove 11, by ozone the organic substance in the processed water is resolved into organic acid, and then resolve into CO
2
In activated charcoal tower 12, organic substance, residual chlorine, particulate etc. are adsorbed on the activated charcoal and remove.
In coalescing filter 13, filter the aggegation piece by filter material.That is, in the upstream of coalescing filter 13 side, with aluminium sulphate, polyaluminium chloride agglutinants such as (PAC) and Gong Shui add in the processed water, form blocks such as aluminum chloride.This aggegation block is filtered in filter screen effect and suction-operated by filter material.
In addition, worker's water is that only supply is discharged to the water of the amount outside this circulation system as condensed water under the situation that recycles the ultrapure water of being made by this water disposal facility.
In ion exchange tower 14, when removing dechlorination, adsorb or the removing of the organic substance of ion-exchange by ion exchange resin.
In reverse osmosis membrane apparatus 15, when removing dechlorination, remove the do not eliminate organic substance of clean ionic, colloidality of in the upstream one side.
According to present embodiment, can keep a fluid stream of the permeate water of ion reverse osmosis membrane apparatus, long-term continual and steady operation.And, owing to can be controlled at the ozone amount that produces in the ozone oxidation groove 11 in right amount, so when keeping the water quality of permeate water, can prevent the waste of the energy.
Above-mentioned embodiment is an example of the present invention, and the present invention is not limited to this.For example, in the water disposal facility of Fig. 3, by the control of the controller in the fluorescence analyser 17 ozone oxidation groove 11, but also can replace the control of ozone oxidation groove 11, perhaps on the control basis of ozone oxidation groove 11, control activated charcoal tower 12, coalescing filter 13, and in the ion exchange tower 14 at least one.
And as shown in Figure 4, what can also make ion exchange tower 14 is provided with the rear-stage side that the position is a reverse osmosis membrane apparatus 15 and the upstream side of backup system 16.
Below, enumerate embodiment the 2nd embodiment of the present invention is carried out more specific description, but the present invention then is not subjected to the qualification of following embodiment so long as do not exceed its main idea.
＜the 1 operation example 〉
Omit the device of backup system 16 in the water disposal facility of employing Fig. 3, carried out the water treatment of processed water.
In addition, as processed water, washing water (TOC concentration: 5.5mg/L, alkyl phenylate type nonionic interface activating agent (APE) concentration: 2.2mg/Las TOC) of in liquid crystal manufacturing process, discharging have been adopted.
As fluorescence analyser 17, adopted the FL4500 type of the Ha イ テ of Hitachi Network corporate system.And, as described later, except to the condensed water from reverse osmosis membrane apparatus 15, also adopted the fluorescence analyser of same machine to carry out to the detection of the water inlet of reverse osmosis membrane apparatus 15.
At first, after this processed water had been added hydrogen peroxide 10mg/L, by NaOH this processed water being adjusted to the pH value was 10.5.
This processed water is imported ozone oxidation groove 11 and is blown into ozone gas, and the ozone treatment water of the ozone gas of 40mg/L has been dissolved in acquisition in this processed water.The result who detects the water quality of this ozone treatment water is 9.8 for the pH value, and conductance is 15mS/m, and TOC concentration is 2.1mg/L, and APE concentration is below the 0.1mg/L as TOC, and remaining ozone concentration is below the 0.5mg/L.
In addition, this APE concentration is passed through polyoxyethylene iso-octyl phenylate (NOF Corp's system, trade name " Nuo Niouleite HS-210 "), be that 230nm, wavelength of fluorescence are that the inspection amount line that the fluorescence intensity of 315nm makes is obtained with the excitation wavelength as standard substance.In addition, the lower limit of quantitation value is 0.1mg/L, as TOC.
With activated charcoal tower 12 (superficial linear velocity in a column is 10L/h), (the PAC addition is 10mg/L to coalescing filter 13, aggegation pH is 6.5), mix the order of bed formula ion exchange tower 14 (superficial linear velocity in a column is 30L/h) this ozone treatment water is handled, obtain ion-exchange treatment water.Its result, this ion-exchange treatment water is that resistivity is 10M Ω/cm, and TOC concentration is 140 μ g/L, and APE concentration is below the 0.1mg/L as TOC.
At operating pressure is 0.74Mpa, seeing through the water yield is 125mL/h, the recovery be 90% condition with the continuous water flowing of this ion-exchange treatment water to reverse osmosis membrane apparatus 15 (the flat film of reverse osmosis: day eastern electrician's corporate system ES20 plain film, diameter is 75mm, ultrapure water cleans product) in, permeate water obtained.Its result can not change operating pressure and see through water yield ground and carry out 80 hours continuous operation.TOC concentration in the permeate water is 50 μ g/L.And, adopt fluorescence analyser to the water inlet of reverse osmosis membrane apparatus 15 and condensed water the result that detects of fluorescence intensity be to detect below the lower limit.
＜the 2 operation example 〉
Except in ozone oxidation groove 11, reducing the amount in processed water, be blown into ozone gas, make outside the ozone gas of 30mg/L is dissolved in the processed water, obtained permeate water with the condition identical with the 1st operation example.
Its result, after 60 minutes, ozone treatment water is that the pH value is 9.8 in the operation beginning, and conductance is 15mS/m, and TOC concentration is 2.4mg/L, and APE concentration is below the 0.1mg/L as TOC, remaining ozone concentration is below the 0.5mg/L.And ion-exchange treatment water is that resistivity is 10M Ω/cm, and TOC concentration is 170 μ g/L, and APE concentration is below the 0.1mg/L as TOC.
But, along with continuous service, seeing through the water yield and reduce gradually, the water yield that sees through after 60 hours is reduced to 106mL/h.And the TOC concentration in the permeate water is 45 μ g/L.In addition, though the fluorescence intensity of the fluorescence analyser 17 of the water inlet of reverse osmosis membrane apparatus 15 is to detect below the lower limit, the APE concentration in the condensed water is 0.2mg/L.
＜the 3 operation example 〉
After the 2nd operation example, service condition turns back to the 1st operation example.
Its result increases gradually from the water yield of the permeate water of reverse osmosis membrane apparatus 15, returns to 120Ml/h after 200 hours.And the fluorescence intensity of condensed water is below 38 in the 3rd operation example, and APE concentration is for detecting below the lower limit.
[explanation of the appropriate method of fluorescence analysis]
Carry out above-mentioned fluorescence analysis, the sample water in being housed in detecting unit irradiation exciting light preferably detects the intensity that existing BOD in this sample water etc. sends.
In the present invention, preferably water quality detection method and the water quality detecting device by following pollution situation illustrated, that can judge detecting unit simply carries out fluorescence analysis.
This water quality detection method is by the irradiation of the sample water in being housed in detecting unit exciting light, detect the intensity of fluorescence that this sample water is sent, thereby detect the method for the water quality of this sample water, has the water quality detection operation of sample water, detect in the water quality detection method of unit pollution detection condition detection operation of pollution situation of this detecting unit, it is characterized in that, detect in the operation at the unit pollution situation, with the standard fluorescence body in this sample water is housed in this detecting unit, to this standard fluorescence body irradiation exciting light, detect the intensity of fluorescence that this standard fluorescence body sends, judge the pollution situation of this detecting unit based on the fluorescence intensity detected value of this standard fluorescence body over time.
This water quality detecting device is a kind of detecting unit with the sample water of accommodating, irradiation means to this sample water irradiation exciting light, and the water quality detecting device that detects the mechanism of the intensity of fluorescence that this sample water sends, it is characterized in that this detecting unit can be accommodated the standard fluorescence body with this sample water.
According to this water quality detection method and water quality detecting device, by with the standard fluorescence body in sample water is housed in detecting unit, judge the pollution situation of detecting unit over time based on the fluorescence intensity detected value of this standard fluorescence body, thereby can carry out the judgement of the pollution situation of detecting unit simply.And, even when the judgement of the pollution situation of detecting unit, owing in detecting unit, also have sample water with the standard fluorescence body, so even when the judgement of unit pollution situation, also can carry out water quality detection.
Also can on the irradiation area of the exciting light of the inside of detecting unit, compartment be set, the tested water that has dissolved this standard fluorescence body of normal concentration is housed in this compartment.And, can also be housed on the irradiation area of the above-mentioned exciting light in this detecting unit to the solid that the major general is contained this standard fluorescence body.In these cases, owing to needn't mix sample water and the standard fluorescence body also can carry out the judgement of the pollution situation of detecting unit, so when the pollution situation of detecting unit is judged, needn't spend this standard fluorescence body is dissolved in the sample water with normal concentration, perhaps judge the man-hour of back separation criterion fluorophor from this lysate at this pollution situation.And, this standard fluorescence body can also be housed in the judgement of implementing pollution situation in the detecting unit with the solution that normal concentration is dissolved in the sample water.
The standard fluorescence body preferably wavelength of fluorescence be present in sample water in the different wavelength region may of wavelength of fluorescence sent of polluter.In this case, the identification of the fluorescence intensity of the fluorescence intensity of polluter and standard fluorescence body is easy.
Also can during one or more water quality detection operation, detect operation by the performance element pollution situation.
Clean detecting unit by judgement, can keep the detecting unit cleaning with few wash number based on the pollution situation of detecting unit.So, the man-hour that can suppress to clean and cost can carry out correct water quality detection simultaneously.
Fig. 5 is the schematic configuration diagram of this water quality detecting device 30.
Upper surface at detecting unit 31 is connected with the inflow pipe 33 that is used to flow into sample water, and the effuser 34 that is used to flow out sample water.
Dispose the interior side unit 32 that is used to accommodate the standard fluorescence body in this detecting unit 31, become compartment 32a in the side unit 32 in this, top of side unit 32 in this is connected with the pipe arrangement 32c that is used to import the standard fluorescence body via valve 32b.
Dispose light projector 35 in the outside of this detecting unit 31.This light projector 35 is towards encouraging directions of light facing to detecting unit 31 and 32 irradiations of interior side unit.Between this light projector 35 and detecting unit 31, dispose the lens 36 that are used for the exciting light from light projector 35 irradiations is carried out optically focused.And in the outside of this detecting unit 31 configuration detector 37, this detecting device 37 is connected on the control part 39 via distribution.
The material of these detecting units 31 and interior side unit 31 gets final product not special restriction, use quartz glass etc. so long as see through the material of exciting light and fluorescence.
Below, the water quality detection method of the sample water that adopts this water quality detecting device 30 is illustrated.
In this state, from light projector 35 irradiation exciting lights.This exciting light is shone on the sample water and the standard fluorescence body in the compartment 32a in the detecting unit 31 by lens 36 optically focused.So, shine on sample water and the standard fluorescence body by exciting light, polluter from be present in sample water and standard fluorescence body send fluorescence.
Detecting device 37 detects the fluorescence that sends from sample water, and it is transformed into electrical signal transfer to control part 39.So, detect the water quality (the water quality detection operation of sample water) of sample water.
And detecting device 37 similarly also to detecting with the fluorescence that sends from above-mentioned standard fluorescence body, is transformed into electrical signal transfer to control part 30 with it.So, the fluorescence intensity of examination criteria fluorophor.
When long-time this water quality detecting device 30 of use, dirt is gradually attached on detecting unit 31 and the interior side unit 32, the fluorescence that sends from the exciting light of light projector 35 irradiations or from the standard fluorescence body or absorbed or reflect by this dirt.Its result, the fluorescence intensity of the standard fluorescence body that detecting device 37 detects in time passing and reduce.Fluorescence intensity detected value to this standard fluorescence body monitors over time, during less than threshold value, implements the cleaning (the unit pollution situation detects operation) of detecting unit 31 or interior side unit 32 at this fluorescence intensity detected value.
Cleaning method as detecting unit 31 and interior side unit 32, though can be by manually taking off detecting unit 31 and interior side unit 32 cleans, but also can be provided with the outside surface of the inside surface of detecting unit 31 and interior side unit 32 is carried out the wiper mechanism of scratch brushing, automatically clean with clear water (pure water etc.).
In the present invention, the standard fluorescence body of use preferably have be present in sample water in the different regional wavelength of fluorescence of fluorescence that sends of polluter.For example, being used for reverse osmosis membrane at water quality detection method of the present invention and water quality detecting device supplies with under the situation of management of water, owing to there is the polluter of the wavelength of fluorescence that sends 300～450nm in supplying water mostly, so be fit to use methylenum careuleum (wavelength of fluorescence is 686nm), rhodamine B (wavelength of fluorescence is 577nm), fluorescein (wavelength of fluorescence is 509nm) etc.
As the exciting light of light projector, both can adopt the exciting light from xenon lamp etc. had been carried out the exciting light after the beam split, can not use prismatically yet.Under achromatic situation, can omit optical splitter etc., miniaturization that can implement device.
In addition, in the above-described embodiment, detect operation, also can carry out off and on though carried out the water quality detection operation and the unit pollution situation of sample water continuously.Under the situation of carrying out off and on, the total amount that shines the exciting light on the standard fluorescence body reduces, and the possibility that the standard fluorescence body decomposes because of irradiation also reduces.
In the above-described embodiment, detect operation, also can between one or more water quality detection operation, carry out the unit pollution situation and detect operation though side by side carried out the water quality detection operation and the unit pollution situation of sample water.
And, when not carrying out the detection of unit pollution situation, the standard fluorescence body can also be extracted from interior side unit 32.In this case, prevented that the standard fluorescence body from decomposing because of the irradiation of the exciting light in the water quality detection operation.
In the water quality detecting device 30 of Fig. 5, side unit 32 in also can replacing, and the solid that will contain the standard fluorescence body at least is configured in the detecting unit 31.
Contain the solid of standard fluorescence body as this, for example can list fluorescent plastic, fluorescent glass, fluorescent paint etc. are applicable to the solid on the matrixes such as plastics or glass.Fluorescent plastic is to add the plastics that fluorophor such as rhodamine is shaped and, and fluorescent glass is to be formed with fluorescent substance in glass structure.
And in the water quality detecting device 30 of Fig. 5, side unit 32 in also can omitting will dissolve in the lysate importing detecting unit 31 of standard fluorescence body with normal concentration sample water from inflow pipe 33.
Below, the pick-up unit of Fig. 5 is used for management one example that reverse osmosis membrane (RO film) supplies water is illustrated.
Extraction supplies to the reverse osmosis membrane of reverse osmosis membrane apparatus and supplies with the part of water as sample water, adopt the water quality detecting device 30 of Fig. 5 to detect the fluorescence intensity that this reverse osmosis membrane is supplied with water (sample water), estimate reverse osmosis membrane based on the testing result of this fluorescence intensity and supply with water.
Supplying with water at reverse osmosis membrane is under the situation of biological treatment of water, and the wavelength of fluorescence that sends from reverse osmosis membrane supply water is the molten reduction generation remarkable influence of depositing organism to the membrane filtration a fluid stream of 290～350nm, particularly 290～335nm, especially 300～315nm.Therefore,, estimate, can simply, correctly estimate the quality that reverse osmosis membrane is supplied with water at short notice based on its testing result by detecting the fluorescence intensity of above-mentioned wavelength of fluorescence.At this, both can be with the integration of the crest of above-mentioned wavelength domain as fluorescence intensity, also can be with the peak intensity of the specific wavelength in the above-mentioned wavelength domain as fluorescence intensity.
And, supplying with water at reverse osmosis membrane is under the situation of biological treatment of water, shine preferably 220～300nm of excitation wavelength that reverse osmosis membrane supplies with exciting light waterborne, particularly preferably be 250～300nm, more preferably be 270～280nm, in this case, can more correctly estimate the quality that reverse osmosis membrane is supplied with water.
The water quality of water is supplied with at the interval of evaluation of carrying out the pollution situation of the detecting unit 31 of water quality detection that reverse osmosis membrane supplies with water and water quality detecting device 30 and interior side unit 32 because of reverse osmosis membrane, its variation, pre-treating method and difference, but preferably for example with every day 2～50 times frequency estimate.
Adopt the water quality detecting device 30 of Fig. 5, methylenum careuleum (wavelength of fluorescence the is 686nm) aqueous solution of accommodating 10 μ g/L in interior side unit 32 is as the standard fluorescence body.Then, will carry out water (TOC:5mg/L) water flowing behind the accurate membrane filtration in detecting unit 31 to the biological treatment of water of organic drainage.The irradiation exciting light, detecting wavelength is the fluorescence intensity of 686nm.It the results are shown in Fig. 6.
In addition, begin through after 170 hours from operation, side unit 32 in taking out from detecting unit 31 is implemented the cleaning of the outer peripheral face of the inner peripheral surface of detecting unit 31 and interior side unit 32.
As can be seen from Figure 6 because from organic drainage water flowing to detecting unit 31 in having been passed through the fluorescence intensity reduction of standard fluorescence body after 100 hours, so preferably cleaning frequency be per 100 hours once.
Claims (11)
1. the evaluation method of a reverse osmosis membrane supply water is estimated the quality that the reverse osmosis membrane that supplies in the reverse osmosis membrane apparatus is supplied with water, it is characterized in that,
It is biological treatment of water that this reverse osmosis membrane is supplied with water, supply with water or be the exciting light of 220～300nm to this reverse osmosis membrane from the condensed water illumination wavelength of this reverse osmosis membrane apparatus, detect that this reverse osmosis membrane is supplied with water or be the fluorescence intensity of 290～350nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces, based on the testing result of this fluorescence intensity, estimate reverse osmosis membrane and supply with water.
2. the evaluation method of a reverse osmosis membrane supply water is estimated the quality that the reverse osmosis membrane that supplies in the reverse osmosis membrane apparatus is supplied with water, it is characterized in that,
It is the water that contains non-ionic surfactant that this reverse osmosis membrane is supplied with water, detect that this reverse osmosis membrane is supplied with water or be the fluorescence intensity of 300～400nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces, based on the testing result of this fluorescence intensity, estimate reverse osmosis membrane and supply with water.
3. the evaluation method of reverse osmosis membrane supply water as claimed in claim 1 or 2 is characterized in that, and then detects all the organism amounts in this reverse osmosis membrane supply water, estimates based on the testing result and the described fluorescence intensity testing result of these all organism amounts.
4. a reverse osmosis membrane is supplied with the evaluating apparatus of water, evaluation supplies to the quality of the reverse osmosis membrane supply water in the reverse osmosis membrane apparatus, it is characterized in that, it is biological treatment of water that this reverse osmosis membrane is supplied with water, the evaluating apparatus that described reverse osmosis membrane is supplied with water has: the exciting light irradiation means, and supply with water or be the exciting light of 220～300nm to this reverse osmosis membrane from the condensed water illumination wavelength of this reverse osmosis membrane apparatus; Fluoroscopic examination mechanism detects that this reverse osmosis membrane is supplied with water or is the fluorescence intensity of 290～350nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces.
5. a reverse osmosis membrane is supplied with the evaluating apparatus of water, evaluation supplies to the quality of the reverse osmosis membrane supply water in the reverse osmosis membrane apparatus, it is characterized in that, it is the water that contains non-ionic surfactant that this reverse osmosis membrane is supplied with water, the evaluating apparatus that described reverse osmosis membrane is supplied with water has fluoroscopic examination mechanism, detects that this reverse osmosis membrane is supplied with water or is the fluorescence intensity of 300～400nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces.
6. method for treating water, by biological treatment mechanism to after containing organic processed water and having carried out handling, carry out the film separating treatment by reverse osmosis membrane apparatus, be separated into condensed water and permeate water, it is characterized in that, to being the exciting light of 220～300nm towards the supply water of this reverse osmosis membrane apparatus or from the condensed water illumination wavelength of this reverse osmosis membrane apparatus, detect that this reverse osmosis membrane is supplied with water or be the fluorescence intensity of 290～350nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces, based on this testing result, control described biological treatment mechanism.
7. a water disposal facility is characterized in that, comprising:
Biological treatment mechanism contains organic processed water and imports wherein;
Reverse osmosis membrane apparatus carries out reverse osmosis membrane separation to the water after mechanism's processing of being carried out a biological disposal upon by this and handles, and is separated into condensed water and permeate water;
Fluorescence intensity testing agency, to being the exciting light of 220～300nm, detecting that this reverse osmosis membrane is supplied with water or be the fluorescence intensity of 290～350nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces towards the supply water of this reverse osmosis membrane apparatus or from the condensed water illumination wavelength of this reverse osmosis membrane apparatus;
Control gear based on the testing result of this fluorescence intensity testing agency, is controlled described biological treatment mechanism.
8. method for treating water, removing by organism after mechanism carried out the processed water that contains non-ionic surfactant handling, carry out the film separating treatment by reverse osmosis membrane apparatus, be separated into condensed water and permeate water, it is characterized in that, detection is the fluorescence intensity of 300～400nm towards the supply water of this reverse osmosis membrane apparatus or from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces, and based on this testing result, controls described organism and removes mechanism.
9. method for treating water as claimed in claim 8 is characterized in that, it is from by biological treatment device that described organism is removed mechanism, the oxygenolysis device, coacervation treating device, and select in the group that constitutes of absorbent charcoal adsorber at least a.
10. a water disposal facility is characterized in that, comprising:
Organism is removed mechanism, and the processed water that contains non-ionic surfactant imports wherein;
Reverse osmosis membrane apparatus carries out the reverse osmosis membrane separation processing to the water of being removed by this organism after mechanism handles, and is separated into condensed water and permeate water;
Fluorescence intensity testing agency detects towards the supply water of this reverse osmosis membrane apparatus or is the fluorescence intensity of 300～400nm from the wavelength of fluorescence that the condensed water of this reverse osmosis membrane apparatus produces;
Control gear based on the testing result of this fluorescence intensity testing agency, is controlled described organism and is removed mechanism.
11. water disposal facility as claimed in claim 10 is characterized in that, it is from by biological treatment device that described organism is removed mechanism, the oxygenolysis device, coacervation treating device, and select in the group that constitutes of absorbent charcoal adsorber at least a.
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| JP2006243019A JP2008064612A (en) | 2006-09-07 | 2006-09-07 | Water quality measuring method and apparatus |
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| JP2007029429A JP4935395B2 (en) | 2007-02-08 | 2007-02-08 | Membrane separator evaluation method, water treatment method, and water treatment apparatus |
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| CN2311486Y (en) * | 1997-08-07 | 1999-03-24 | 涌嘉康企业有限公司 | Reverse osmosis water treatment apparatus and its controller |
| CN1495130A (en) * | 2000-11-30 | 2004-05-12 | 株式会社东芝 | Water treatment control system using fluorescent analyser |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4867413B2 (en) | 2012-02-01 |
| CN101042347A (en) | 2007-09-26 |
| JP2007252978A (en) | 2007-10-04 |
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