'How can we control biofilm growth in drinking water pipeline without increasing disinfectant dosing as WQ standards and not to end up with disinfectant byproducts due to excess disinfectant..
Fidelis, the growth of biofilm could be derivative from different causes, bad primary treatment of raw water, or in the end of the production line we can have bad sanitation practices, it is recommended that you have an excellent quality and sanitation control in all your steps in the process of making drinking water ...you can use in some points of your pipeline UV light for avoid the use of chemical compounds...
Improve the treatment before the water is distributed to reduce the DOC and especially the biodegradable DOC.
Likely solutions are activated carbon or biological active sandfilters.
In Denmark we achieve stable water that can be distributed without a residual disinfectant solely through using high quality raw water and aeration followed by biological sand filters.
If you want take a look in this manuscript...I think it will be useful:
Simões and Simões, 2013. Biofilms in drinking water: problems and solutions. RSC Advances, 2013, 3, 2520. DOI: 10.1039/c2ra22243d
Dear Fidelis,
Distribution of drinking water without residual disinfectant is applied successfully for many years in several European countries (e.g. The Netherlands, Switzerland, ..). This can be achieved by extensive removal of biodegradable nutrients during pretreatment and a well-maintained network containing well-selected materials (that do not contribute to biofilm formation/biological growth). Excellent papers on this topic have been written by e.g. Frederik Hammes, Dick van der Kooij.
A paper on Researchgate is titled "Elucidation and control of biofilm formation processes in water treatment and distribution using the unified biofilm approach" by D. van der Kooij, J.S. Vrouwenvelder and H.R. Veenendaal.
Best regards, Hans
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