Chemikalien
INAQUA Vertriebsgesellschaft mbH is a sales partner of Avista Technologies and supplies chemicals for your membrane plant. The spectrum ranges from RoQuest flocculants, Vitec antiscalants and antifoulants, RoCide non-oxidizing biocides and disinfectants to RoClean membrane cleaners.
Avista Technologies specializes in membrane technology and offers the right product even for critical and difficult applications. The products are used for pre-treatment such as multi-media filters, micro-, ultra- and nanofiltration as well as reverse osmosis.
In addition to chemicals, Avista Technologies offers a detailed autopsy of your membrane module to analyse the reasons for membrane damage or underperformance.
In addition, OSCAR, an off-site cleaning service is offered. Your membrane will be made ready for use again by using special cleaning techniques with Avista Technologies products.
Avista
Avista Technologies produces water treatment chemicals for reverse osmosis systems and their pretreatments.
These chemicals are pre-tested, tested and are subject to continuous testing to ensure that the unique challenges of various water treatment processes and changing raw waters are always met.
The following chemicals/treatments are available:
Flocculants
RoQuest®
Colloid and silt pollution are the main causes of a loss of performance in membrane separation systems. Therefore, many system designs include as pre-processing a wide variety of mechanisms to ensure particle removal. These include multimedia filters, fine filters and ultrafiltration systems. The RoQuest® coagulants neutralize the negative electrostatic charges of the particles and filter media surfaces. The elimination of these charges allows collisions and attachments between particles and media grain surface.
RoQuest®
RoQuest 3000 contains a mixture of organic coagulants and is designed for dosing upstream of multi-media and sand filters in the inlet of a RO system. This product enhances filtration performance by coagulating turbidity and colour. The best results are achieved with communal treated feed water and raw water containing particles and organic dyes in relatively low concentrations. The upper raw water limit for turbidity and colour is 2 - 10 NTU for this product.
Application:
Dose RoQuest 3000 at least 5m upstream of a filter. This ensures optimum mixing in the inlet upstream of the filter. Do not use static mixers, as the shear forces exerted by these devices may destroy the polymers contained in this solution.
Dosage instructions:
RoQuest 3000 is normally used in a concentration range of 0.5 to 4 ppm. Special dosage calculations can be found in the Avista dosage instructions. A strong overdose of RoQuest 3000 may cause a deterioration in the quality of the filtered water. If you have any questions, please contact Avista Technologies for specific dosage instructions.
Dilution:
Before injection into the feed stream, RoQuest 3000 can be diluted in a ratio of 25: 1 with de-chlorinated water. This may increase efficacy, but is generally not necessary.
Packaging and storage:
RoQuest 3000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container.
Physical properties:
Appearance: clear, amber-coloured liquid
Density: 1.05 +/- 0,05 kg/litre
pH: 4,0 to 6,0
Technical properties:
RoQuest 3000 offers the following performance and application features:
- produces feed water for RO plants in multi-media and sand filtration applications
- compatible with thin film and cellulose acetate RO membranes.
- Thanks to its properties as a filter aid, the penetration of solids in filter applications is significantly delayed
- good efficacy at low dosage
- compatible with Vitec® Antiscaling 3000, 5000 and 7000
- efficacy over a wide pH range
- no minimum requirements regarding alkalinity
- a biostatic agent inhibits biological growth in the packing unit and in the storage container
Produktdatenblatt
RoQuest 4000 contains a mixture of organic coagulants and iron (III) ions and is designed to be added upstream of multi-media and sand filters in the raw water flow of a RO system. This product enhances filtration performance by reducing turbidity and colour. The best results are obtained with raw water containing particles and organic dyes in relatively low concentrations or in which organic polymers have been under- or overdosed. The upper raw water limit for turbidity and colour is 2 NTU or 10 units for this product.
Application:
Dose RoQuest 4000 at least 5 m upstream of a multi-media filter. This ensures optimum mixing in the inlet upstream of the filter. Do not use static mixers, as the shear forces exerted by these devices may destroy the polymers contained in this solution.
Dosage:
Usually the dosage is between 2 and 25 ppm. Approximately 0.25 mg/l alkalinity (calcium carbonate) is required per mg/l RoQuest 4000. After addition of the coagulant, at least 25 ppm of residual alkalinity is required. A strong overdose of RoQuest 4000 may cause a deterioration in the quality of the filtered water. If you have any questions, please contact Avista Technologies for specific dosage instructions.
Dilution:
RoQuest 4000 should be added undiluted if possible. If dilution is necessary, do not dilute more than 4: 1 with RO permeate or demineralised water.
Packaging:
RoQuest 4000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container.
Physical properties:
Appearance: clear, amber-coloured liquid
Density: 1.3 – 1,4kg/litre
pH: 4,0 to 6,0
Technical properties
Produces feed water for RO plants in multi-media and sand filtration applications
- compatible with thin film and cellulose acetate RO membranes.
- Thanks to its properties as a filter aid, the penetration of solids is delayed.
- good efficacy at low dosage
- compatible with Vitec® Antiscaling 3000, 500
RoQuest 5000 ontains a blend of organic coagulants and ferric ions and is designed for addition to the feed of multi-media and sand filters. This product extends filter performance by coagulating turbidity and color. Best results are obtained in raw waters that have turbidity up to 10 NTU and contain more than 10 color units, or in feed waters where organic polymers have been under- or over-dosed.
Anwendung:
Dispense RoQuest 5000 at least 5m upstream of a multi-media filter. Do not use static mixers upstream of filters, as shear forces from these devices may destroy polymers contained in this solution.
Dosierung:
Generally, the dosage is between 2 and 25 ppm. Approximately 0.25 ppm of alkalinity (calcium carbonate) is required per ppm of RoQuest 5000. After addition of the coagulant, at least 25 ppm of residual alkalinity is required. Severe overdosing of RoQuest 5000 may cause deterioration in the quality of the filtered water. If you have questions about this, please contact Avista Technologies for specific dosing instructions.
Verdünnung:
RoQuest 5000 should be added undiluted whenever possible. If dilution is necessary, never dilute more than 4:1 with RO permeate or demineralized water.
Verpackung / Lagerung:
RoQuest 5000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container. The product should be protected from frost during storage.
Physikalische Eigenschaften:
Appearance: clear, brown liquid
Density: 1.3 - 1.4kg/ltr.
pH: 4.0 to 6.0
Technische Eigenschaften:
- contains more than 9% soluble ferric ions and less than 0.2% ferrous ions
- produces ROFeed-quality feed water in multi-media and sand filtration applications
- compatible with thin film and cellulose acetate RO membranes.
- Thanks to its properties as a filter aid, it prevents the breakthrough of solids in forward filter applications
- good efficiency at low dosage
- Compatible with Vitec® 3000, 5000 and 7000 scale inhibitors
- Efficacy over a wide pH range
Produktdatenblatt
RoQuest 6000 contains a mixture of organic coagulants and iron (III) ions and is designed as a coagulant and flocculant in clarifiers where flocculants are used. This product enhances filtration performance by reducing turbidity and colour. The water produced has a feed water quality that is more acceptable for downstream reverse osmosis systems.
Application:
Dose RoQuest®6000 at least 5m upstream of a multi-media filter. Do not use static mixers upstream of the filters, as the shearing caused by these devices will degrade the polymers contained in this solution.
Dosage:
Usually the dosage is between 5 and 35 ppm. Approximately 0.25 ppm alkalinity (calcium carbonate) is required per ppm RoQuest 6000. After addition of the coagulant, at least 25 ppm of residual alkalinity is required. A strong overdose of RoQuest 6000 may cause a deterioration in the quality of the filtered water. If you have any questions, please contact Avista Technologies for specific dosage instructions.
Dilution:
RoQuest 6000 should be added undiluted if possible. If dilution is necessary, you should never dilute more than 4: 1 with RO permeate or demineralised water.
Packaging / storage:
RoQuest 6000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container. The product should be protected from frost during storage.
Physical properties:
Appearance: clear, brown liquid
Density: 1.4 – 1,6 kg/litre
pH: 2,0 to 3,0
Technical properties
- contains more than 9.5 % soluble iron (III) ions and less than 0.2 % iron (II) ions
- certified by United Laboratories according to ANSI/NSF 60 for use in drinking water producing systems
- produces feed water of RO quality in multi-media and sand filtration applications
- compatible with thin film and cellulose acetate RO membranes.
- Thanks to its properties as a filter aid, the penetration of solids is delayed
- Good efficacy at low dosage
- compatible with Vitec® 3000, 5000 and 7000 scale inhibitors
- efficacy over a wide pH range
Antiscalant
Vitec®
Due to the high yields of a reverse osmosis plant, the solubility limits of the salts are exceeded in the concentrate. The salts precipitate and form deposits on the membrane surface, the scaling. Frequent scaling deposits are calcium carbonate CaCO3, calcium sulphate CaSO4, barium sulphate BaSO4 and strontium sulphate SrSO4. Less frequent but equally problematic are deposits of silicon dioxide SiO2 and calcium fluoride CaF.
Vitec® offers a range of products that pushes the solubility limits upwards and thus prevents premature scaling. These antiscalants have been developed for a variety of waters, e.g. for the treatment of spring, surface, town and well waters, seawater and process and waste water.
Vitec®
Vitec 2000 is a liquid antiscalant developed to prevent scaling on membranes. It can also be used as a dispersant. Vitec® 2000 an be used concentrated or diluted in a wide range of applications. (e.g. surface water and well water)
The exact dosage amounts can be determined with the Avista Advisor calculation program.
Application:
Vitec 2000 achieves optimum performance when injected downstream of the multimedia filter and upstream of the candle filter. Sufficient mixing should be achieved.
Dilution:
Vitec 2000 should not be diluted more than 1:10.
Dosage instructions:
The typical dosing range is between 2 and 5 ppm. The optimum quantity can be determined with the Avista Advisor computer program. Both over- and underdosing can cause unnecessary fouling/scaling of the membrane system. The Avista customer service provides individual support for the compilation of dosage instructions.
Packaging and storage:
Vitec 2000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container. The product should be protected from frost during storage as the active ingredient would precipitate under extreme temperatures. Heating of the product and subsequent stirring brings the active ingredient back into solution.
Physical properties:
| Appearance: | slightly yellowish liquid |
| Density: | 1.15 +/- 0,05 kg/litre |
| pH: | 4.5 to 5.5 |
Technical properties:
Vitec 2000 Antiscalant offers a variety of application possibilities:
Prevents RO membrane scaling caused by the following substances:
+ Calcium carbonate (CaCO3)
– Langelier Saturation Index
(LSI) > 3
– CCPP > 900
+ Calcium sulphate (CaSO4)
– up to 3.5 times oversaturation
+ Barium sulphate (BaSO4)
– up to 105 times oversaturation
+ Strontium sulphate (SrSO4)
– up to 35 times oversaturation
+ Calcium fluoride (CaF)
– up to 1000 times oversaturation
Dispersion properties reduce colloids and suspended solids fouling on the membrane surfaces.
Compatible with organic polyelectrolytes
Complex formation with heavy metals, thus heavy metal fouling reduced
Compatible with all standard RO membranes
Working range from pH 2 to 12
Produktdatenblatt
Vitec® 3000 is a liquid antiscalant developed to prevent scaling on cellulose acetate and thin film membranes. It can also be used as a dispersant.
Vitec® 3000 is compatible with organic flocculants. These can be contained indirectly in any town water. They can enter the water directly through a flocculation application of the inlet. Vitec® 3000 can be used concentrated or diluted in a wide range of applications. The exact dosage amounts can be determined with the Avista Advisor calculation program.
Application:
Vitec® 3000 achieves optimum performance when injected downstream of the multimedia filter and upstream of the candle filter. Sufficient mixing should be achieved. Vitec® 3000 should be used after dechlorination (sodium bisulfite, activated carbon). The effectiveness of the product is reduced in the presence of chlorine.
Dilution:
Vitec® 3000 should not be diluted more than 1:10. Thus, an optimal effect of the bacteriostatic agent contained in the Vitec® 3000 is achieved.
Dosage instructions:
The typical dosing range is between 2 and 5 ppm. The optimum quantity can be determined with the Avista Advisor computer program.
Packaging and storage:
Vitec® 3000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container. The product should be protected from frost during storage as the active ingredient would precipitate under extreme temperatures. Heating of the product and subsequent stirring brings the active ingredient back into solution.
Physical properties:
| Appearance: | slightly yellowish liquid |
| Density: | 1.25 +/- 0.05 kg/litre |
| pH: | 9,8 to 11,8 |
Technical properties:
Vitec® 3000 Antiscalant offers a variety of application possibilities:
Prevents RO membrane scaling caused by the following
substances:+ Calcium carbonate (CaCO3)
– Langelier Saturation Index (LSI) < 2.5
– CCPP > 900
+ Calcium sulphate (CaSO4)
– up to 3.5 times oversaturation
+ Barium sulphate (BaSO4)
– up to 105 times oversaturation
+ Strontium sulphate (SrSO4)
– up to 20 times oversaturation
+ Calcium fluoride (CaF)
– up to 1000 times oversaturation
Dispersion properties reduce colloids and suspended solids fouling on the membrane surfaces.
Compatible with organic polyelectrolytes
Complex formation with heavy metals, thus heavy metal fouling reduced
Compatible with all standard RO membranes
Working range from pH 2 to 12
Product data sheet
Vitec® 4000 is a liquid antiscalant developed to keep high concentrations of scaling formers in solution at low dosing rates. Vitec® 4000 prevents silica scaling at higher concentrations and allows the operation of membrane systems with high yields. In addition, it allows iron (Fe) concentrations in the concentrate flow of membrane systems up to 4 mg/l. It also acts as a dispersant. The exact dosage amounts can be determined with the Avista Advisor calculation program.
Application:
Vitec® 4000 achieves optimum performance when injected downstream of the multimedia filter and upstream of the candle filter. Product is injected. Sufficient mixing should be achieved.
Dilution:
Vitec® 4000 should not be diluted more than 1:10. Thus, an optimal effect of the bacteriostatic agent contained in the Vitec® 4000 is achieved.
Dosage instructions:
The typical dosing range is between 2 and 5 ppm. The optimum quantity can be determined with the Avista Advisor computer program. Both over- and underdosing can cause unnecessary fouling/scaling of the membrane system. The Avista customer service provides individual support for the compilation of dosage instructions.
Packaging and storage:
Vitec® 4000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container. The product should be protected from frost during storage as the active ingredient would precipitate under extreme temperatures. Heating of the product and subsequent stirring brings the active ingredient back into solution.
Physical properties:
| Appearance: | slightly yellowish liquid |
| Density: | 1.15 +/- 0,05 |
| pH: | 4.5 to 6.5 |
Technical properties:
Vitec® 4000 Antiscalant offers a variety of application possibilities:
Protects the membranes against silicate scaling up to a saturation of 250 mg/l of SiO2 in the concentrate flow
Prevents RO membrane scaling caused by the following substances:
+ Calcium carbonate (CaCO3)
– Langelier Saturation Index (LSI) < 2.5
– CCPP > 900
+ Calcium sulphate (CaSO4)
– up to 3.5 times oversaturation
+ Barium sulphate (BaSO4)
– up to 105 times oversaturation
+ Strontium sulphate (SrSO4)
– up to 20 times oversaturation
+ Calcium fluoride (CaF)
– up to 1000 times oversaturation
Dispersion properties reduce colloids and suspended solids fouling on the membrane surfaces.
Complex formation with heavy metals, thus heavy metal fouling reduced
Compatible with all standard RO membranes
Working range from pH 2 to 12.
Product data sheet
Vitec 7000 is a highly effective liquid antiscalant developed to prevent scaling on membranes. It has excellent properties to keep calcium sulphate in solution at a low dosing rate. Vitec 7000 can be used concentrated or diluted in a wide range of applications (e.g. surface water and well water).
The exact dosage amounts can be determined with the Avista Adviser calculation program.
Application:
Vitec 7000 achieves optimum performance when injected downstream of the multimedia filter and upstream of the candle filter. Sufficient mixing must be achieved.
Dilution:
Vitec 7000 should not be diluted more than 1:10. Thus, an optimal effect of the bacteriostatic agents contained in the Vitec 7000 is achieved. Bacterial growth in the container and storage tank is prevented by observing this procedure.
Dosage instructions::
The typical dosing range is between 2 and 5 ppm. The optimum quantity can be determined with the Avista Advisor computer program. Both over- and underdosing can cause unnecessary fouling/scaling of the membrane system. The Avista customer service provides individual support for the compilation of dosage instructions.
Packaging and storage:
Vitec 7000 is available in 23 kg canister, 230 kg drum and 1100 kg IBC container. The product should be protected from frost during storage as the active ingredient would precipitate under extreme temperatures. Heating of the product and subsequent stirring brings the active ingredient back into solution.
Physical properties:
| Appearance: | clear, slightly yellowish liquid |
| Density: | 1.2 +/- 0.05 kg/litre at 20° C |
| pH: | 5.0 bis 6.0 |
Technical properties:
Vitec 7000 Antiscalant offers a variety of application possibilities:
Prevents RO membrane scaling caused by the following substances:
Calcium carbonate CaCO3
CCPP > 900 / LSI > 2.5
Calcium sulphate CaSO4
- up to 6 x Ksp
Barium sulphate BaSO4
- up to 105 x Ksp
Si02 up to 120 ppm
Strontium sulphate (SrSO4)
- up to 20 x Ksp
Calcium fluoride (CaF)
- up to 1000 x Ksp
Dispersion properties reduce colloids and suspended solids fouling on the membrane surfaces
Compatible with polyelectrolytes
Complex formation with heavy metals, thus heavy metal fouling reduced
Compatible with all standard RO membranes.
Produktdatenblätter
Biocides
RoCide®
The biocides are used to suppress bacteria, micro-organisms and algae indifferently. This can be done by continuous dosing, shock dosing or by a CIP cleaning system. We provide support for the optimization of the most suitable disinfection regimes for the membrane system.
Biological fouling of membrane systems is a major challenge in the operation of such plants. The reason for this is above all the use of effective biocides, which have no oxidizing effect, in order to rule out irreversible damage to the polyamide membrane layer.
RoCide® offers two types of biocides for use in membrane systems: RoCide®DB and RoCide®IS2. Both formulations are non-oxidizing and EPA-registered. They can be safely used in both polyamide and cellulose acetate membranes. However, they are not suitable for in-line feeding in drinking water production or treatment systems. Both have excellent environmental properties and are quickly decomposed in a natural way. Therefore, these chemicals are particularly suitable for systems that are operated in accordance with strict environmental and waste water regulation.
RoCide®
RoCide DB5 is a fast-acting, non-oxidizing biocide based on a 20% solution of the active ingredient DBNPA (dibromo-nitrilopropionamide). RoCide DB5 has an almost immediate antibacterial effect. Thus, this biocide is one of the most cost-effective methods for removing bacteriological contamination.
RoCide®DB5 has excellent environmental properties, as it degrades very quickly and naturally. This property makes it the first choice, especially in systems that are subject to high environmental requirements.
Application:
There are two options when using RoCideDB5 in reverse osmosis applications:
1. Intermittent online feed for "shock treatment":
This method makes it possible to use the biocide only when it is necessary to control fouling. The amount and frequency of dosage should be optimally adapted to the bacterial load in the feed water. An initial dosage of 200mg/l for 1 hour per week is a typical starting point for optimization. The valid regulations must be observed for drinking water applications.
2. Cleaning agent for RO membranes:
RoCide DB5 is generally used in the first cleaning stage. Depending on the degree of fouling, RoCide DB5 is used in a solution of 200-200 mg / l. The solution is circulated through the membranes for 1-3 hours. As RoCide®DB5 is a fast-acting biocide, it is best to add it four times in batches of 200mg/l during the circulation period.
Packaging:
RoCide DB5 is available in 5 kg, 25 kg canisters and 227 kg drums
Information on IBC containers or tank truck deliveries is available on request.
Properties:
| Appearance: | clear yellowish liquid |
| Density: | 1.15 bis 1.2 kg/litre |
| pH: | 2,0 to 5,0 (as supplied) |
Technical properties::
RoCide DB5 offers a variety of application possibilities:
- immediate antimicrobial effect against bacteria and organisms
non-oxidizing - inactivates bacteria, fungi and algae
- compatible with TFC polyamide and cellulose acetate membranes
- degrades quickly and thus meets strict environmental requirements
- can be used in combination with other Avista cleaners.
Produktdatenblätter
RoCide®DB5 Produktdatenblatt
RoCide DB20 ist ein schnell wirkendes, nicht oxidierendes Biozid, das auf einer 20-prozentigen Lösung des Wirkstoffs DBNPA (Dibromnitrilpropionamid) basiert. RoCide DB20 hat eine nahezu sofortige antimikrobielle. Damit ist dieses Biozid eine der kostengünstigsten Methoden zur Beseitigung von biologischen Verunreinigungen. RoCide DB20 ist von EPA für die Verwendung in Umkehrosmosesysteme zertifiziert. Zudem hat es hervorragende Umwelteigenschaften, da es sich sehr schnell und vor allem auf natürlichem Wege abbaut. Diese Eigenschaft macht es zur ersten Wahl bei einer Desinfektion vor allem bei Systemen die hohen Umweltauflagen unterliegen.
Anwendung:
Bei der Anwendung von RoCideDB20 in Umkehrosmoseanwendungen gibt es zwei Optionen:
1. Intermittierende Online-Zuführung zur „Schockbehandlung“:
Dieses Verfahren ermöglicht es, das Biozid nur dann zu verwenden, wenn es zur Kontrolle von Fouling erforderlich ist. Die Höhe und die Häufigkeit der Dosierung sollten der Bakterienlast im Speisewasser angepasst werden. Eine anfängliche Dosierung von 50mg/l für 1 Stunde pro Woche ist ein typischer Startpunkt für eine Optimierung. Für Trinkwasseranwendungen sind die lokalen Vorschriften zu beachten.
2. Reinigungsmittel für RO-Membranen:
RoCide DB20 wird in der Regel in der ersten Reinigungsstufe eingesetzt. Je nach Ausmaß des Fouling wird RoCide DB20 in einer Lösung von 50-200 mg/l angewendet. Die Lösung wird 1-3 Stunden durch die Membranen zirkuliert. Da RoCide®DB20 ein schnell wirkendes Biozid ist, gibt man es am besten während der Zirkulationsperiode vier Mal in Schüben von 50mg/l zu.
Verpackung:
RoCide DB20 ist verfügbar in 5 kg, 25 kg Kanister und 227kg Fässern Informationen über IBC-Container oder Tankwagenlieferungen sind auf Anfrage erhältlich.
Eigenschaften:
| Aussehen: | klare gelbliche Flüssigkeit |
| Dichte: | 1.25 bis 1.3 kg/ltr |
| pH: | 2,0 to 5,0 (wie geliefert) |
Technische Eigenschaften:
RoCide DB20 bietet eine Vielzahl von Anwendungsmöglichkeiten:
- von der Umweltschutzbehörde (EPA) für die Verwendung in Umkehrosmosesysteme zertifiziert
- sofortige antimikrobielle Wirkung gegen Bakterien und Organismen nicht oxidierend
- inaktiviert Bakterien, Pilze und Algen
- kompatibel mit TFC-Polyamid und Celluloseacetatmembranen
- wird schnell abgebaut und erfüllt somit strenge Umweltauflagen
- kann in Kombiation mit anderen Avista Reinigern eingesetzt werden.
Produktdatenblätter
RoCide®DB20 product data sheet
RoCide IS2 ist ein extrem wirksames, nicht-oxidierendes Biozid, das auf einer 1,5- %-igen Isothiazolin-Mischung basiert. Es ist eine Breitbandbiozid, das in Umkehrosmoseanwendungen bei üblich auftretenden mikrobiologischen Verunreinigungen, einschließlich Bakterien, Pilze und Algen, eingesetzt wird.
RoCide IS2 wird überwiegend kontinuierlich in das Speisewasser des Umkehrosmosesystems zugegeben und kann allein oder in Verbindung mit RoCide DB20, oder einem anderen Biozid von Avista eingesetzt werden.
Anwendung:
Zur kontinuierlichen Dosierung sollte RoCide IS2 mit einer anfänglichen Dosierung von 15 ppm in den Zulauf des Umkehrosmosesystems eingespeist werden. Diese Dosierung sollte ein bis zwei Wochen beibehalten werden. Danch wird im Zulauf-und Konzentratstrom die Biomasse bestimmt. Evtl. kann die Dosierung herabgesetzt werden (in der Regel auf 5 ppm oder weniger). Eine mikrobiologische Erfolg ist im Allgemeinen erzielt, wenn die Bakterienzählung im Konzentrat unter der im Speisestrom abfällt (unter Berücksichtigung des Konzentrationsfaktors).
Alternativ kann RoCide IS2 diskontinuierlich mit 50-100 ppm für 4-6 Stunden pro Woche eingesetzt werden. Zudem ist es ein hoch wirksames Systemschutzmittel; mit der oben angegebenen Dosierung wird das biologische Wachstum in Offline-Systemen für längere Zeiträume unter Kontrolle gehalten.
Für Trinkwasseranwendungen sind die lokale Vorschriften zu beachten.
Verpackung:
RoCide IS2 ist verfügbar in 25 kg Kanister und 200kg Fässern Informationen über IBC-Container oder Tankwagenlieferungen sind auf Anfrage erhältlich.
Eigenschaften:
| Aussehen: | blau grünliche Flüssigkeit |
| Dichte: | 1.05 bis 1.1 kg/ltr |
| pH: | 1,5- 3,0 ( wie geliefert ) |
Technische Eigenschaften:
- Breitbandbiozid, das Bakterien, Pilze und Algen abtötet
- kompatibel mit TFC-Polyamid und Celluloseacetatmembranen
- wird schnell abgebaut und erfüllt somit strenge Umweltauflagen
- kann in Kombiation mit anderen Avista Reinigern eingesetzt werden
Produktdatenblatt
RoCide®IS2 product data sheet
Membrane cleaners
RoClean®
RoClean® Technologies offers an extensive range of specially developed membrane cleaners to eliminate virtually all membrane blockages. Details can be found in the product data sheets.
All supplied membrane cleaners are concentrated and must be diluted with permeate (or drinking water). The mixing and solution behaviour of all AVISTA membrane cleaners is very high. Warming up the cleaning solution and adjusting good cleaning hydraulics have an enhancing effect on the membrane cleaners.
RoClean
RoClean
RoClean L211 is a liquid, alkaline cleaner with low foaming behaviour. The product has been developed to remove colloidal silicon, clay, organic dyes and bacterial deposits from spirally wound elements. The formulation is temperature stabilized to ensure that the pH is always in the effective range.
Application:
Im Folgenden ist eine Zusammenfassung der Reinigungs-Vorschriften mit RoClean L211 beschrieben. Weitere Informationen sind der Avista-Information „Reinigung von Spiralwickelmembranen“ zu entnehmen.
1. Fill the vessel with RO-permeate or DI-water to the desired volume. Add RoClean L211 to the tank. (Max.
dilution 1:50) Heating the solution to 45°C considerably enhances the cleaning effectiveness. Good mixing is achieved by recirculation of the solution through the CIP tank.
2. Recirculation of the cleaning solution through each RO stage, for at least 60 minutes. The recommended volume flows of the membrane manufacturer must be observed. If the volume flows are not known, the following values must be used
[table “” not found /]
3. If the fouling is very strong, if the cleaning solution discolours or becomes turbid, the cleaning solution must be partially or completely discarded. Soaking the elements for up to 8 hours is recommended for difficult cleaning operations.
4. The pH-value must be observed during the cleaning process. If the pH is above pH 10 (45°C) and the solution is not turbid, it can be used again. Otherwise, you have to prepare a new solution and proceed with step 1-4.
5. After completion of the cleaning process, each element is rinsed with ROPermeat. The plant can now be put into operation again.
Dilution:
Normally, RoClean L211 is diluted 1:50 with water. A dilution of 1:100 is sufficient for low fouling.
Packaging:
RoClean L211 is available in 25 kg canisters.
Properties:
| Appearance: | colourless to amber-coloured |
| Dichte: | 1.05 bis 1.10 kg/litre |
| pH: | 11 to 11.5 at 25°C |
Technical properties::
RoClean L211 offers a variety of application possibilities:
- compatible with TFC membrane elements
- contains a selection of buffers, surfactants and chelates to dissolve organic particles
- strong pH buffering to avoid fluctuations during the cleaning process
- excellent results compared to conventional cleaners
- can be used in combination with other cleaners
- temperature compensation to stabilize an optimal pH in a wide temperature range.
-
Product data sheet
RoClean L
RoClean®L211 Produktdatenblatt
RoClean®L403 Produktdatenblatt
RoClean®L404 Produktdatenblatt
RoClean®L212 Produktdatenblatt
RoClean®L811 Produktdatenblatt
AntiChlor
AntiChlor
AntiChlor is a modified, odorless liquid sodium bisulfite formulation used to remove free and combined chlorine from reverse osmosis (RO) feedwaters.
AntiChlor
AntiChlor
AntiChlor 427 liquid is also less prone to air oxidation than equivalent solutions and has a longer shelf life when compared to straight sodium bisulfate solutions.
AntiChlor 427 removes chlorine more effectively than activated carbon and eliminates many of the issues associated with carbon beds, including bacterial growth and carbon fines in downstream feedwaters.
AntiChlor 30 liquid is a dechlorinating agent used as a mild, nonoxidizing
biostat or injected into reverse osmosis (RO) feedwaters to protect polyamide membranes from permanent damage caused by chlorine.
AntiChlor 30 is a 30% (minimum) solution of sodium bisulfite. It is a food-grade reducing agent and is certified by NSF International for use in systems producing drinking water.
Product Data Sheet
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