EP0886692B1 - Verfahren zum betreiben einer gegenstromwaschstrasse und zum durchführen des verfahrens geeignete anlage - Google Patents
Verfahren zum betreiben einer gegenstromwaschstrasse und zum durchführen des verfahrens geeignete anlage Download PDFInfo
- Publication number
- EP0886692B1 EP0886692B1 EP97906166A EP97906166A EP0886692B1 EP 0886692 B1 EP0886692 B1 EP 0886692B1 EP 97906166 A EP97906166 A EP 97906166A EP 97906166 A EP97906166 A EP 97906166A EP 0886692 B1 EP0886692 B1 EP 0886692B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stage
- water
- washing
- process water
- aftertreatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 114
- 238000005406 washing Methods 0.000 title claims abstract description 95
- 238000009434 installation Methods 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 166
- 239000013505 freshwater Substances 0.000 claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 36
- 239000001301 oxygen Substances 0.000 claims abstract description 36
- 150000003839 salts Chemical class 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims abstract description 4
- 239000008237 rinsing water Substances 0.000 claims abstract description 4
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 36
- 238000004061 bleaching Methods 0.000 claims description 11
- 239000004615 ingredient Substances 0.000 claims description 9
- 230000000249 desinfective effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 239000000645 desinfectant Substances 0.000 abstract description 9
- 239000007844 bleaching agent Substances 0.000 abstract 3
- 239000000654 additive Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 9
- 239000003599 detergent Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 238000009938 salting Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- AMJUWROQAOGQPZ-UHFFFAOYSA-N [O].CC(=O)OO Chemical compound [O].CC(=O)OO AMJUWROQAOGQPZ-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940036626 digox Drugs 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002979 fabric softener Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
Definitions
- the invention relates to a method for operating a countercurrent Car wash with several chambers connected in series, whereby Items to be washed in succession in a prewash stage, a wash stage, one Rinse level, a post-treatment level and a drainage level treated a disinfectant and / or bleaching detergent is added and process water at least partially, of which rinse water in the washing stage and Press water and / or post-treatment water in the rinse stage, again be used.
- the process is used to wash textiles in the commercial area, e.g. B. in laundries, hospitals, homes, etc., used.
- a method of the type mentioned at the outset is as follows based on FIG. 1 is explained in more detail, known from practice.
- this known method becomes! a disinfectant and / or bleaching active oxygen-containing Used washing aids and the freight loaded with this washing aid Press water from the dewatering stage at least partially into the rinse stage returned.
- Parts of the press water can be mixed with recycled water Process water from the rinse stage, sometimes also in the wash stage and the prewash stage can be used again.
- One is used as a washing aid Peracetic acid solution used.
- the invention has for its object the method of the aforementioned Type to run so that the hygienic to the treatment of the laundry and aesthetic requirements can be reliably met over the long term. In doing so the consumption of washing aids and fresh water should be as low as possible.
- this object is achieved in the process mentioned at the outset in that the active oxygen content of the process water and the salt concentration in the process water, preferably in the rinsing area, in the area of the aftertreatment stage or the dewatering stage, are determined and in particular documented, and that in at least one of these stages an active oxygen content of the Process water between 80 and 120 ppm active O 2 in the process water by appropriate addition of a disinfectant and / or bleaching detergent in aqueous solution, and a salt concentration in the process water less than 1200 mg / l, preferably less than or equal to 1000 mg / l process water, be continuously maintained by metering in fresh water into the last chamber of the rinsing stage and / or the aftertreatment stage, the metered amount of disinfectant and / or bleaching detergent and the metered amount of fresh water being such u the amount of aftertreatment water returned to the rinse stage and the amount of press water are related in such a way that, taking into account the process water constituents carried over into the aftertreatment stage
- Such a process has the advantage that the quality of the washing process significantly influencing variables, namely the active oxygen content and the Salt concentration in the process water in the area of the post-treatment stage constantly monitored and in particular documented and at the risk of Deviation from preferred concentrations by metering in an active oxygen containing washing aids and / or fresh water low salinity, the desired concentration ranges are constantly maintained become.
- safe disinfection of the reused Process water created circulation water enables and Surface contamination avoided.
- this is due to the Return of the press and after-treatment water to the rinse stage created circuit water safely disinfected and this Rinse stage / post-treatment stage / dewatering stage circuit water always free of germs that could cause hospital infections.
- This security will achieved by determining the active oxygen content of the process water, ie monitored, and in particular documented and continuously maintained becomes. It becomes a both in terms of washing and Disinfection effect created a very safe procedure that permanently Compliance with those placed on the laundry at the end of the washing process ensures hygienic and aesthetic requirements.
- Detergent in the process water is in the post-treatment stage or the drainage level constantly monitored and in particular documented and constantly in the range of by adding detergents desired concentration kept.
- a disinfectant is used as a washing aid and / or washing aid containing active oxygen and having a bleaching effect. This guarantees hygienically perfect conditions for the laundry at the end of the washing process. In particular, the recontamination of the laundry, the formation of mold stains and the formation of odors when stored moist Prevents laundry.
- the salt concentration in the process water is also monitored.
- the quality of the Washing process significantly influencing size, namely the salt concentration in the process water at the end of the rinsing stage or in the area of Post-treatment level or the drainage level constantly monitored as well especially documented and by adding fresh water with low Salinity kept constantly in the range of the desired concentration. To this In this way, excessive salting of the process water is avoided.
- the method according to the invention causes no other than that by Washing process in itself unavoidable fiber damage to the laundry. So show comparative experiments with comparative fabrics, the washing processes the method according to the invention and, in comparison, normal washing processes with the addition of washing aids containing active oxygen at the end of the Rinse stage and / or in the aftertreatment stage and without return of Aftertreatment and press water were subjected to the rinse stage, no differences in the tensile strength loss and in the damage factor of the Laundry.
- the amount to be metered in can be carried over to process water ingredients that have been carried over Washing aids for setting a concentration of 80 to 120 ppm active oxygen significantly reduce in the rinse or post-treatment stage.
- Post-treatment water quantity and press water quantity ins Ratio is set that taking into account the with the laundry in the post-treatment stage entrained process water ingredients in this
- the desired process water composition can be set reduce the amount of fresh water to be added to a minimum without that the quality of the washing process suffers.
- the bleaching detergent is preferably aqueous in peracetic acid Solution.
- the active oxygen content is undershot of 80 ppm active oxygen in the process water and / or if the salt concentration is exceeded of 1200 mg / l process water in the area of the post-treatment stage the operation of the car wash is stopped automatically. This will be shortfalls or exceeding the desired concentrations is immediately apparent and the causes of these errors can be eliminated immediately become. At the same time, this indicates that the treated laundry may not meet the desired requirements.
- that can Switching off the system are also indicated optically and / or acoustically, which the invention also provides.
- the inventive method is characterized in that the total consumption per kg dry laundry in fresh water and bleaching Washing aids not higher and in particular smaller than the corresponding one Consumption when operating without returning press water or post-treatment water is in the rinse level.
- the amount of fresh water to be added to the washing process can be increased by up to 50% compared to a washing process without post-treatment and press water return be lowered.
- the invention also relates to a countercurrent washing system, in particular for Execution of the method already mentioned, with several series connected Chambers, one in groups with at least one chamber Prewash stage, a wash stage, a rinse stage and an aftertreatment stage form and which is followed by a drainage stage, equipped with a Plant for the supply and discharge of fresh and process water, whereby Process water at least partially, including rinse water in the washing stage and Press water and / or aftertreatment water by means of a return line in the rinse level, can be used again.
- the previously mentioned invention is used Object achieved in that at least in one of the areas rinse stage, post-treatment stage and dewatering stage with collecting tank at least one sensor to determine the active oxygen content and at least one sensor to determine the salt concentration in the process water is installed that one for the post-treatment stage and / or last chamber of the rinsing stage with metering line
- Dosing unit for a washing aid containing active oxygen and a control unit is provided with the sensors and the metering unit for the active oxygen-containing Washing aids and with the system for the supply of fresh water is connected in terms of line and function and depending on the Sensors determined values taking into account that with the laundry in the Post-treatment stage entrained process water ingredients the fresh water supply and controls the metering of the washing aid so that the desired composition of the process water in the post-treatment stage sets.
- the invention creates a device which permanent compliance with the items to be washed at the end of the washing process ensures requirements with minimal water consumption.
- the variables that significantly influence the quality of the washing process namely the Content of active oxygen-containing washing aids and the salt concentration in the Process water is used in the post-treatment stage or the dewatering stage constantly monitored and in particular documented and through Dosing of washing aids and / or fresh water with low salt content kept constantly in the range of the desired concentrations.
- As a washing aid an agent containing active oxygen is used. This guarantees one high quality of the washing result. Otherwise, the device stands out also by the advantages listed above for the method in the same Way out.
- the device is in one advantageous embodiment of the invention, characterized in that a device for flow rate measurement in the system for the return of Aftertreatment water and press water is integrated in the rinse stage. On this way it can be determined whether the cause of a deviation from the desired concentrations of salinity and active oxygen in too high a presses / post-treatment water content returned to the rinsing stage. In in this case the fresh water content would have to be increased. It is also advantageous if the corresponding flow meter based on an inductive Flow measurement works or is an oval gear meter.
- control unit detects the recorded values documented, which provides a complete proof of perfect operation the device according to the invention is possible.
- FIG. 1 In the process diagram shown in Figure 1 according to the prior art a car wash with twelve chambers 1-12 and a hopper 13 and a downstream EW dewatering press and piping Shut-off and deflecting elements, addition devices for fresh water FW, washing and washing aids PESa, PESb, and containers T1, T2 and T3 for collecting or intermediate storage of process water systematically represented.
- the chambers 1 and 2 are the pre-wash stage VW, 3 to 7 the final wash or wash stage KW, 8 to 11 assigned to the rinse level SP and 12 to the post-treatment level NB.
- the Press water PW of the drainage level EW and the after-treatment water NW from the post-treatment stage NB are in the tank T3 and the rinse water SW from the rinse stage SP is collected in tank T2.
- Post-treatment NB such as B. starches, fabric softener, neutralize and / or Disinfect and convey from there to the drainage press EW. If they refer to the first, middle or last chamber Terms on the conveying direction of the laundry.
- the other subset of the Flushing water SW from tank T2 is disposed of directly as waste water.
- the Washing aids in the example peracetic acid, are used in portions of 2 to 3 ml / kg TW (PESa) chambers 11 and / or 12 and from 8 to 10 ml / kg TW (PESb) a medium, e.g. B. the washing chamber 5 added.
- Peracetic acid PESa is partially in an amount of 2 to 3 ml / kg TW Chamber 11 and / or partially used in chamber 12.
- the one used in chamber 12 Part comes with after it became effective in the post-treatment NB the re-used aftertreatment water NW and press water PW into the chamber 11 of the rinse stage.
- the predominant one Part of peracetic acid PESa can be added to chamber 12 as also the still effective part of the peracetic acid in the re-used Press water can take effect over the entire rinse stage.
- the measurement schemes according to the invention are shown in the layout diagrams in FIGS. and controlled systems including the associated facilities and the Water flow diagram shown.
- the process diagram shown in Figure 3 at which the addition of the reused aftertreatment NW and press water PW approximately in the middle of the rinse stage SP (chamber 9) has the advantage that the recirculated water NW and PW is used in one chamber, in which the laundry has a higher temperature and thus the post-treatment (NW) - and press water PW better for cooling down the Laundry can contribute. Otherwise, the schemes differ Figures 2 and 3 do not.
- the washing aid also the last chamber 11 of the rinse stage SP, as in the drawings are shown in dashed lines.
- the active washing agent containing oxygen is added to the post-treatment stage in such an amount that in the process water of the standing bath of the post-treatment level NB Concentration of 80 to 120 ppm active oxygen.
- an active O 2 sensor 13 and a sensor 14 for measuring the salt concentration are shown in tank T3.
- the sensor 13 could also be arranged in the chamber 12, for example. If the sensor 13 determines an active oxygen content approximately in the middle of a predetermined range of 80 to 120 ppm active O 2 in the process water, there is no change in the amount of peracetic acid added. If the concentration increases within the predetermined bandwidth into higher ranges, the sensor 13 sends a corresponding signal to the central control unit 17, by means of which a command for reducing the amount of peracetic acid added is issued. Conversely, a corresponding signal in the case of a drop into lower concentration ranges would result in a corresponding increase in the amount of peracetic acid added continuously.
- the measuring sensor 13 for determining the active O 2 content, for example a flow rate measurement with devices connected in parallel. However, it is also possible to measure the active O 2 content or the peracetic acid content directly and to use it directly to regulate the dosage. Such an "online measurement" is currently on the market under the name DIGOX PES, which is able to control a dosing pump for peracetic acid by means of appropriate signal processing.
- the sensor 13 sends its electrical signal via the line 20 to the control unit 17, which determines the metering rate for the amount of peracetic acid added.
- the tank T3 there is also a measuring probe 14 for determining the salt content in the collected post-treatment (NW) - and press water PW installed. Also this probe could alternatively be installed in chamber 12.
- a very An advantageous method for measuring the salinity is the inductive measurement of Process water conductivity.
- the conductivity is a measure of the electrolyte content of the liquor and thus represents the content of soluble salts. By comparison measurement it is possible to have a certain conductivity a certain one Assign salinity.
- the sensor is connected via a second electrical line 21 or the measuring probe 14 is also connected to the control unit 17. From the tank T3 leads a return line 22 into chamber 11 (FIG. 2) or chamber 9 ( Figure 3) the rinse stage.
- the aftertreatment (NW) - and press water PW returned to the rinse stage.
- This Device 15 for setting and / or measuring the aftertreatment and drainage level recycled amount of circulating water is through a third electrical line 23 is also connected to the control unit 17.
- the device according to the invention are thus the sensor 13 Concentration of the washing aid peracetic acid, by the sensor 14 Salt concentration of the aftertreatment and recyclable as circulating water Press water and through the device 15 which is returned to the rinsing stage Aftertreatment and press water quantity determined and via the respective electrical lines 20, 21 and 23 as corresponding to the respective measured value electrical signal transmitted to the control unit 17.
- these signals are recorded, the corresponding corresponding measured values documented and processed to control and regulate the washing process.
- the control unit 17 also takes into account the operating personnel set specifications, which are a measure of the amount to be washed in the laundry Post-treatment level NB entrained process water ingredients play.
- the amount of washing aid added is adjusted so that in Process water of post-treatment level NB a concentration of 80 to 120 ppm of washing aid containing active oxygen. Detects the control unit now based on the transmitted data that the current dosage setting to permanently fall below the desired concentration level leads to washing aids in the process water, this sets the Car wash automatically out of order.
- the duration of a shortfall lower or upper limit can be set by the operating personnel in minutes or cycle times of the car wash. In the case of one such a permanent fall below the limit value, it is likely that there is a device fault, without which the quality of the Washing process is not guaranteed.
- Salinity in the example less than or equal to 1000 mg / l of process water. Increases the salinity above this value is the likely cause of this insufficient fresh water supply. But it may also be because the ratio of the amount of fresh water supplied to the rinsing stage SP to the return Amount of aftertreatment water NW and press water PW It is unfavorable that, for example, the press water and aftertreatment water content gets too high. Among other things therefore is in line 22 for the return a flow measurement 15 of the water NW and PW into the rinsing stage SP Installed.
- a limit switch is also recommended for the salinity.
- the return amount of aftertreatment (NW) determined with the aid of the flow meter 15 and press water PW is also in the control unit 17 Check and adjust the amount of washing aid to be added used.
- the control unit 17 controls the dosing device for peracetic acid PESa such that taking into account the post-treatment and Press water quantity recycled washing aid in the process water Post-treatment stage NB the desired concentration of 80 to 120 ppm Adjusts washing aids.
- Fresh water FWb can be worked from line 26. After that, in the The middle of the cycle, the feed hopper 13 can be fed with press and / or Rinse water supplied and mixed with the fresh water there to the Reduce concentration of peracetic acid.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Detergent Compositions (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Control Of Ac Motors In General (AREA)
Description
- Figur 1
- ein Verfahrens- und Anlagenschema gemäß dem Stand der Technik,
- Figur 2
- ein Verfahrens- und Vorrichtungsschema gemäß der vorliegenden Erfindung und
- Figur 3
- ein Verfahrens- und Anlagenschema eines zweiten Ausführungsbeispieles gemäß der Erfindung.
Claims (8)
- Verfahren zum Betreiben einer im Gegenstrom arbeitenden Waschstraße mit mehreren hintereinandergeschalteten Kammern, wobei Waschgut nacheinander in einer Vorwaschstufe (VW), einer Waschstufe (KW), einer Spülstufe (SP), einer Nachbehandlungsstufe (NB) und einer Entwässerungsstufe (EW) behandelt wird, ein desinfizierend und/oder bleichend wirkendes Waschhilfsmittel zugegeben und Prozeßwässer zumindest teilweise, davon Spülwasser (SW) in der Waschstufe (KW) und Pressenwasser (PW) und/oder Nachbehandlungswasser (NW) in der Spülstufe (SP), wieder eingesetzt werden,
dadurch gekennzeichnet, daß der Aktivsauerstoffgehalt des Prozeßwassers und die Salzkonzentration im Prozeßwasser, vorzugsweise in der Spülstufe (SP), im Bereich der Nachbehandlungsstufe (NB) oder der Entwässerungsstufe (EW), ermittelt und insbesondere dokumentiert werden und
daß in mindestens einer dieser Stufen (SP; NB; EW) ein Aktivsauerstoffgehalt des Prozeßwassers zwischen 80 und 120 ppm Aktiv-O2 im Prozeßwasser durch entsprechende Zudosierung eines desinfizierend und/oder bleichend wirkenden Waschhilfsmittels in wäßriger Lösung, und eine Salzkonzentration im Prozeßwasser kleiner als 1200 mg/l, vorzugsweise kleiner als oder gleich 1000 mg/l Prozeßwasser, durch Zudosierung von Frischwasser in die letzte Kammer der Spülstufe (SP) und/oder die Nachbehandlungsstufe (NB) kontinuierlich aufrechterhalten werden,
wobei die zudosierte Menge an desinfizierend und/oder bleichend wirkendem Waschhilfsmittel und die zudosierte Frischwassermenge derart zu der in die Spülstufe (SP) rückgeführten Menge des Nachbehandlungswassers (NW) und der Menge des Pressenwassers (PW) ins Verhältnis gesetzt werden, daß sich unter Berücksichtigung der mit dem Waschgut in die Nachbehandlungsstufe (NB) verschleppten Prozeßwasserinhaltsstoffe in diesem Bereich die genannte Zusammensetzung des Prozeßwassers einstellt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß das desinfizierend und bleichend wirkende Waschhilfsmittel Peressigsäure in wäßriger Lösung ist. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß abweichenden Salzkonzentrationen nur dann durch die Änderung der Frischwasserdosierung gegengesteuert wird, wenn zuvor die Einhaltung der vorgegebenen Rückführmenge an Nachbehandlungswasser (NW) und Pressenwasser (PW) in die Spülstufe (SP) festgestellt wurde. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß bei Unterschreitung des Aktivsauerstoffgehalts von 80 ppm Aktiv-O2 im Prozeßwasser und/oder bei Überschreitung der Salzkonzentration von 1200 mg/l Prozeßwasser im Bereich der Nachbehandlungsstufe (NB) der Betrieb der Waschstraße automatisch gestoppt wird. - Verfahren nach dem vorhergehenden Anspruch,
dadurch gekennzeichnet, daß das Abschalten der Anlage optisch und/oder akustisch angezeigt wird. - Gegenstromwaschanlage, insbesondere zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, mit mehreren hintereinandergeschalteten Kammern (1 - 12), die in Gruppen mit mindestens einer Kammer eine Vorwaschstufe (VW), eine Waschstufe (KW), eine Spülstufe (SP) und eine Nachbehandlungsstufe (NB) bilden und denen eine Entwässerungsstufe (EW) nachgeschaltet ist, ausgerüstet mit einer Anlage für die Zu- und Abführung von Frisch- und Prozeßwasser (FW, PW, SW, NW), wobei Prozeßwässer zumindest teilweise, davon Spülwasser (SW) in die Waschstufe (KW) und Pressenwasser (PW) und/oder Nachbehandlungswasser (NW) mittels einer Rückführleitung (22) in die Spülstufe (SP), wieder einsetzbar sind,
dadurch gekenzeichnet,
daß mindestens in einem der Bereiche Spülstufe (SP), Nachbehandlungsstufe (NB) und Entwässerungsstufe (EW) mit Auffangtank (T3) mindestens ein Sensor (13) zur Ermittlung des Aktivsauerstoffgehalts und mindestens ein Sensor (14) zur Ermittlung der Salzkonzentration im Prozeßwasser installiert ist, daß eine zur Nachbehandlungsstufe (NB) und/oder letzten Kammer (11) der Spülstufe (SP) führende Zudosierleitung (18) mit Zudosiereinheit für ein aktivsauerstoffhaltiges Waschhilfsmittel (PESa) und eine Steuereinheit (17) vorgesehen ist, die mit den Sensoren (13, 14) und der Zudosiereinheit (PESa) für das aktivsauerstoffhaltige Waschhilfsmittel sowie mit der Anlage für die Zufuhr von Frischwasser (FWa) leitungs- und wirkmäßig verbunden ist und in Abhängigkeit der von den Sensoren (13, 14) ermittelten Werte unter Berücksichtigung der mit dem Waschgut in die Nachbehandlungsstufe (NB) verschleppten Prozeßwasserinhaltsstoffe die Frischwasserzufuhr (FWa) und die Zudosierung des Waschhilfsmittels (PESa) derart steuert, so daß sich die gewünschte Zusammensetzung des Prozeßwassers in der Nachbehandlungsstufe (NB) einstellt. - Gegenstromwaschanlage nach dem vorhergehenden Anspruch,
dadurch gekennzeichnet, daß eine Einrichtung (15) zur Durchflußmengenmessung in das System zur Rückführung von Nachbehandlungswasser (NW) und Pressenwasser (PW) in die Spülstufe (SP) integriert ist. - Gegenstromwaschanlage nach Anspruch 6 oder 7,
dadurch gekennzeichnet, daß die Steuereinheit (17) die erfaßten Werte dokumentiert.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19609994A DE19609994C1 (de) | 1996-03-14 | 1996-03-14 | Verfahren zum Betreiben von im Gegenstrom arbeitenden Waschstraßen und Gegenstromwaschanlagen |
DE19609994 | 1996-03-14 | ||
PCT/EP1997/001100 WO1997034039A1 (de) | 1996-03-14 | 1997-03-05 | Verfahren zum betreiben einer gegenstromwaschstrasse und zum durchführen des verfahrens geeignete anlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0886692A1 EP0886692A1 (de) | 1998-12-30 |
EP0886692B1 true EP0886692B1 (de) | 2001-10-31 |
Family
ID=7788242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97906166A Expired - Lifetime EP0886692B1 (de) | 1996-03-14 | 1997-03-05 | Verfahren zum betreiben einer gegenstromwaschstrasse und zum durchführen des verfahrens geeignete anlage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0886692B1 (de) |
AT (1) | ATE207985T1 (de) |
DE (2) | DE19609994C1 (de) |
WO (1) | WO1997034039A1 (de) |
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DE10154982A1 (de) * | 2001-11-01 | 2003-05-22 | Kannegiesser H Gmbh Co | Verfahren zum Behandeln, insbesondere Desinfizieren von Wäschestücken |
DE102007019193A1 (de) * | 2007-04-20 | 2008-10-23 | Herbert Kannegiesser Gmbh | Verfahren und Vorrichtung zur Nassbehandlung von Wäschestücken |
CN114277535A (zh) * | 2021-12-30 | 2022-04-05 | 江苏赛格纺织机械有限公司 | 一种应用于印染退煮漂设备的智能加料装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3935621A1 (de) * | 1989-10-26 | 1991-05-02 | Herbertz Heinz | Verfahren und vorrichtung zum waschen und desinfizieren in einer durchlaufwaschmaschine |
FR2680376B1 (fr) * | 1991-08-14 | 1993-11-19 | Anhydride Carbonique Ste Indle | Procede de lavage par voie liquide d'articles a caractere textile, tel que du linge, utilisant du gaz carbonique. |
DE4310996A1 (de) * | 1993-04-03 | 1994-10-06 | Roehm Gmbh | Desinfektionsverfahren |
DE4323427C2 (de) * | 1993-07-13 | 1996-08-29 | Henkel Ecolab Gmbh & Co Ohg | Waschstraße und Wasserführungsverfahren |
EP0636731A1 (de) * | 1993-07-28 | 1995-02-01 | Senkingwerk GmbH | Verfahren zum Waschen von Wäsche in einer Gegenstrom-Durchlaufwaschmaschine |
DE4412576A1 (de) * | 1994-04-13 | 1995-10-19 | Henkel Kgaa | Sensorsystem zur Desinfektionsmittelerfassung und Dosierung in Textilwaschanlagen (Senking-Anlagen) |
-
1996
- 1996-03-14 DE DE19609994A patent/DE19609994C1/de not_active Expired - Fee Related
-
1997
- 1997-03-05 AT AT97906166T patent/ATE207985T1/de not_active IP Right Cessation
- 1997-03-05 WO PCT/EP1997/001100 patent/WO1997034039A1/de active IP Right Grant
- 1997-03-05 EP EP97906166A patent/EP0886692B1/de not_active Expired - Lifetime
- 1997-03-05 DE DE59705190T patent/DE59705190D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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WO1997034039A1 (de) | 1997-09-18 |
DE19609994C1 (de) | 1997-09-18 |
DE59705190D1 (de) | 2001-12-06 |
EP0886692A1 (de) | 1998-12-30 |
ATE207985T1 (de) | 2001-11-15 |
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