Published by malik abu alrous in Case Studies
Dear colleagues,
What is the best sanitation method to remove the Pseudomonas bacteria from water system as RO , UF,...
Much appreciated
Category: Case Studies
See this article:https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652019005000603#:~:text=Ozone%20is%20used%20for%20removal,%25)%20of%20microbial%20contamination12.
But it should be noted that I have a bias because our US company manufactures inexpensive electrolytic ozone generators for use in CIP systems, 1000L and under sized tanks, or small personal size devices. :-)
Published by Marianna "Yana" DeMyer, CEO at Roving Blue®, Inc.
Please, do not forget that removing free-floating bacteria, including pseudomonas, is relatively easy - and all biocide treatments mentioned below can be highly effective. The real problem is biofilm, which is the ideal environment for the proliferation of bacteria, including pathogens - and such microbial layer is much more difficult to remove. As long as there is biofilm, no water system can be considered safe from pathogens - and checking the liquid for free-floating bacteria won't provide any real help. Therefore, it is much more important to ASSESS the efficacy of the treatment, rather than to CHOOSE the treatment itself, solely based on experience. Biofilm monitoring technologies allow to optimize biocide protocols, based on real needs, and to assess their efficacy.
Published by Manuel Anselmo, R&D Scientist at ALVIM Biofilm Monitoring Technologies
Pseudomonas aeruginosa is a Gram-negative, aerobic, and nonfermentative bacterium, which normally lives in a moist environment. The sodium dichloroisocyanurate is the most efficient sanitizer in the reduction of the adhered Pseudomonas. The hydrogen peroxide ias also more effective in the reduction of adhered cells of Pseudomonas.
Published by Prem Baboo, Researcher at www.researchGate.net
Pseudomonas aeruginosa is a Gram-negative, aerobic, and nonfermentative bacterium, which normally lives in a moist environment. The sodium dichloroisocyanurate is the most efficient sanitizer in the reduction of the adhered Pseudomonas. The hydrogen peroxide ias also more effective in the reduction of adhered cells of Pseudomonas.
Published by Prem Baboo, Researcher at www.researchGate.net
Chlorine or hypochlorite are much cheaper than either DCI or peroxide.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Ozone has been mentioned and it will give excellent removal of Pseudomonas. Someone mentioned that it is expensive, but we have a device that produces ozone from water. No consumable chemicals, and harmless to the environment, and not expensive - peter@oxitechsolutions.com
Published by Peter Barratt, Research & Development Director at Oxi-Tech Solutions Limited
Did you ever tried Aquakristalb-B ?
Published by Ucar Yildirim
You can use Sodium Hypochlorite , produced from common salt to kill the bacteria. This is an onsite generator , can be operated as per requirement. Hydrogen Paraoxide is another medium to kill Pseudomonas bacteria.
Published by Ravi Chandran, Managing Director at Pristine Water
Pseudomanas Aeruginosas are Cl2-resistant bacteria!
Published by Mauro Gandola, OWNER of EGMA - STUDIO ASS.TO - TECHNOLOGICAL WATER SPECIALIST - SERVICE ONLINE
Dear Malik,
UV is the proper answer. Ozone is too expensive, chlroination is not efficient. If you want to apply physical filtration only, then UF is good, RO is not a disinfection method.
So the question is UV or UF in the end. If you have good ultraviolet transparency; UVT above 75% at least and no UV adosorbing agnets like dissolved iron (Fe3+) present or other heavy metals and low TSS then UV is the answer. In case UVT is too low then UF. IF TSS is too high you need a phase separation before disinfection...
Good luck!
Zsolt
Published by Zsolt Edgar Dr Rasztovits, PhD, Senior manager with work experience at GE, BASF, BAYER, BAUER, INVENT, GENESIS, XYLEM
No!. Chlorine is very efficient. UV is expensive and selective and leaves no residual disinfectant.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
To sanitize sand filters, I bring the pH to 6.5 and use sodium hypochlorite at 5 ppm for 24 hours
Published by Saul Aiolfi, Biologist expert and trainer in water treatment and for safety at work
Use 0.5 PPM Chlorine Dioxide, it will take care of the issue.
Jan
Disinfection Sciences
Published by Jan Verwater
So will chlorine or hypochlorite, less expensively and easier than ClO2 and with fewer water quality complications.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
A lot depends on the specification of the membrane manufacturer. I happen to like DBNPA or peroxyacetic acid if approved by the manufacturer.
Published by Terry Scheurman, President at Applied Specialties, Inc.
DBNPA è un modo giusto. È tutto.
Published by Mauro Gandola, OWNER of EGMA - STUDIO ASS.TO - TECHNOLOGICAL WATER SPECIALIST - SERVICE ONLINE
thanks so much , could you please provide us with the name of supplier
Published by malik abu alrous
in engish: DBNPA is a right way. That is all.
Published by Water Network Research, Official research team of The Water Network
https://en.wikipedia.org/wiki/DBNPA
Published by Water Network Research, Official research team of The Water Network
Good Afternoon Malik,
Please advise daily volume and application.
Warmest regards,
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Published by Alfred Lipshultz, President at Aquathin Corp.
80m3/hr
Published by malik abu alrous
Medium pressure UV systems remove it easily. It is clean, no chemicals needed and no residual effect. We have been doing it successfully for over 10 years.
Published by Marcos Silveira
Medium pressure UV systems remove it easily. It is clean, no chemicals needed and no residual effect. We have been doing it successfully for over 10 years.
Published by Marcos Silveira
Dear Malik, based on my experience and POV it's very important and should be totally necessary to know the application/process. i.e. you cannot use chemical disinfection in a pharmaceutical process or in an alimentary process that uses water as ingredient. In general terms, I would suggest ClO2 disinfection (chlorine dioxide).
Published by Leandro Barrionuevo
beverage industry we used (chlorine dioxide) & oxzonia but no result
Published by malik abu alrous
You can use ozone too, it is the most powerful commercial disinfectant you can find.
Published by Orlando D. Gutiérrez Coronado
DISINFECTION with chlorine and with a small (~0.5 mg/L ) residual for distribution.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Based on my treatment ideas, if you can use rapid sand filter, activated carbon and finally advance oxidation processes, it can get rid of that...
Published by Omeje Maxwell
You can find an exhaustive review about different options at http://www.alvimcleantech.com/cms/en/about-biofilm/white-papers/biocides
Published by Giovanni Pavanello, Director at ALVIM Biofilm Monitoring Technologies
thanks
Published by malik abu alrous