Fighting Legionella and other water germs in biofilms
Legionella (e.g. Legionella pneumophila) represent a water hygiene problem which is often underestimated. They are also the cause of legionnaires‘ disease (legionellosis).
Legionella settle in the so-called biofilms, which can only be combated poorly or not at all by e.g. disinfectants containing hydrogen peroxide. Chlorine also has less disinfecting power than the active ingredient chlorine dioxide present in our products. As a result, the biofilm protects the Legionella from the effect of the disinfectants and they can continue to multiply.
Note: Products containing the active ingredient hydrogen peroxide are widely used. According to the current Drinking Water Ordinance (UBA list), the intended use of hydrogen peroxide is only oxidation, not disinfection!
To combat biofilm including the legionella, pseudomonads and other pathogenic germs contained therein, biostream® ZERO and biostream® TRAVEL with the active ingredient chlorine dioxide contained therein represent one of the most effective methods that can be used in drinking water to combat viruses and bacteria.
This is due to its chemical nature: as a gas dissolved in the water, it is able to penetrate the protective layers of slime-forming microorganisms to kill legionella, pseudomonads and other pathogenic germs. This leads to inhibition of biofilm growth and even removes already grown biofilms! In addition, there is an effectiveness in the gas space. Thus, viruses and bacteria are effectively combated!
A sustainable control of Legionella and Pseudomonas in drinking water systems is only possible in connection with the control of the biofilm in the pipes. Only when the biofilm has been eliminated as a nutrient basis can pathogenic germs and bacteria be actively eliminated.
If biofilms are already present, we recommend basic sanitation of the piping system by means of shock or stand disinfection. Here, the active ingredient chlorine dioxide is introduced into the pipe system in a higher dosage. After a line-dependent exposure time, the complete line system is then flushed to remove the dissolved biofilm.
After this basic sanitation, we recommend regular disinfection with chlorine dioxide. This prevents the biofilm from growing again and effectively combats legionella, pseudomonads and other pathogenic germs in advance.
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Photo: Bacterial smear on agar plate.
- ready for use within only 3 hours
- effective over the entire drinking water pH range
- suitable for aluminum tanks
- suitable for disinfection of drinking water in times of crisis, for emergency preparedness in case of blackout, power failure and other disaster situations
- 25 times stronger than hydrogen peroxide (according to DVGW worksheet W291)
- highly effective against:
Pseudomonas aeruginosa (Pseudomonads, Pseudomonas)
Escherichia coli (E.coli) and coliform bacteria
Legionella / Legionella pneumophila
- without heavy metals (silver, copper)
- no germ resistance formation known
- Euro standard DIN EN12671 "Chlorine dioxide"
- EU drinking water regulation
- compliant with Article 95 (2) (EU) No. 528/2012 / Biocide Directive
- DVGW worksheet W291 and is thus approved for disinfection of water distribution systems
- Guideline No. 5 of the AK of the coastal countries for ship hygiene
- DVGW worksheet W224 "Dosing of a chlorine dioxide solution prepared on site"
- DIN 2001-2 / DIN 2001-2:2009-04 "Drinking water supply from small systems and non-potable systems - Part 2: Non-potable systems - Guidelines for requirements for drinking water, planning, construction, operation and maintenance of systems; Technical rule of the DVGW"
- Active ingredient approved by the United States Environmental Protection Agency (EPA) for disinfection of drinking water
- The active ingredient has been used to disinfect drinking water in waterworks since the mid-1950s
biostream® products against biofilms
Learn in this info sheet how you can effectively combat biofilms to fight Legionella, E.Coli, Pseudomonas and other water germs to ensure a perfect quality of drinking or process water. In German language only.
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SUSTAINABLE CONTROL OF LEGIONELLA AND BIOFILMS
Legionella (e.g. Legionella pneumophila) are a water hygiene problem that is often underestimated. They are also the cause of legionnaires' disease (legionellosis).
Legionella settle in the so-called biofilms, which can only be combated poorly or not at all by e.g. disinfectants containing hydrogen peroxide. Chlorine also has less disinfecting power than the active ingredient chlorine dioxide present in our products.
According to the current Drinking Water Ordinance, biostream® products are approved as disinfectants for drinking water. In addition, our products comply with the current requirements of the Biocide Directive.
Our customers combat biofilms, viruses and bacteria in very different application scenarios: The dentist worries about his treatment unit and the yacht owner or camper cares about the perfect hygiene of his water tank. But our products are also used in industry to combat Legionella and E.Coli.
The biostream® products are available in different container sizes and packaging:
We deliver as individually as necessary. For example, biostream® asepticaPRO is available in small 10ml vials that require very little storage space and are therefore ideal for travel and outdoor expeditions.
All biostream® products are approved as disinfectants for drinking water according to the current Drinking Water Ordinance and comply with Article 95 (2) of the Biocide Regulation (Regulation (EU) No. 528/2012).
HYDROGEN PEROXIDE AND AGENTS CONTAINING SILVER ARE NOT AN ALTERNATIVE
The biostream® products ZERO and asepticaPRO comply with DIN 2001-2:2009-04 (drinking water supply from small systems and non-stationary systems) and they are effective over the entire drinking water pH range. Hydrogen peroxide is not mentioned in the DIN as a disinfectant - also in the current UBA list of the Federal Environment Agency hydrogen peroxide is only mentioned as an oxidant - but not as a disinfectant.
Take a look at the label of the disinfectant you are currently using: If you find hydrogen peroxide as the active ingredient there, then according to the Federal Environment Agency you are NOT using a DISINFECTING AGENT but an oxidizing agent which, according to DVGW worksheet W291, must be dosed 25 X more strongly in order to achieve the same effectiveness as the active ingredient in the biostream® products.
And if your product also contains silver: Silver is also not mentioned as a disinfectant but only as a preservative. In addition, the following note on this can be found in the DIN: "Only in exceptional cases when storing drinking water without consumption for a longer period of time. Preservation does not replace any necessary disinfection of drinking water that is not in perfect condition."
Referenzen der biostream® GmbH (Auszug): / References of biostream® GmbH (excerpt):
Use biocidal products with care. Always read label and product information before use.
All statements on effectiveness refer to the many years of experience of biostream® GmbH, to information from technical literature, laws, regulations and to positive customer references.
Gender language: As already communicated 04/2019: On our websites we use the word "employee/customer/user" for simpler wording. However, we define "employee/customer/user" not only in the masculine form but also in the currently used definition (m/f/d).