The Use of Phosphate-Silicate Inhibitor, in Corrosion Control of Drinking Water Distribution System
American Journal of Applied Scientific Research
Volume 2, Issue 6, November 2016, Pages: 97-102
Received: Oct. 6, 2016;
Accepted: Oct. 20, 2016;
Published: Dec. 29, 2016
Views 3357 Downloads 182
Daniela Gologan, Quality and Treatment Water Department, Paltinu Water Treatment Plant, E.S.Z Prahova, Romania
The chemical content of water - pH, mineralization, alkalinity, hardness, calcium and magnesium compounds, carbon dioxide free provide guidance about buffering capacity of water. Therefore, if the mineralization and pH is low, the water is aggressive towards the materials used in manufacturing pipes - concrete, steel, HDPE, PVC, PAX. If the mineralization is high, the pH is high, too and the water forms crust and hardness deposits on the pipe. To control corrosion in water distribution networks, the methods most commonly applied are: adjusting pH, increasing the alkalinity or hardness, adding corrosion inhibitors. The phosphate-silicate inhibitor (the Folmar technology) is a complex solution, completely soluble in water and very harmless to the human body and is used to control the chemical corrosion of pipes in water distribution system, the biological corrosion (due to iron bacteria, sulphate reducing bacteria, Pseudomonas), to control the bio-film and secondary pathogen growth in drinking water distribution system. This study presents the results for their evaluation performance in different pipes and different water chemistry content. The evaluation of Folmar technology lasted for at least minim 1 month to 1 year for each water source. The results obtained have revealed the ability of this bycomponent inhibitor type to reduce corrosive water and pipe trends.
The Use of Phosphate-Silicate Inhibitor, in Corrosion Control of Drinking Water Distribution System, American Journal of Applied Scientific Research.
Vol. 2, No. 6,
2016, pp. 97-102.
Hansson CM., “The impact of corrosion on society” inMetallurgical & Materials Transactions. 2010; 42: 2952-2962.
World Corrosion Organization. Geroge FH (General manager). “Now is the Time”. 2012.
Maiara C. Moura, Emmanuel V. Pontual, “An Outline to Corrosive Bacteria-Microbial pathogens and strategies for combating them: science, technology and education” (A. Méndez-Vilas, Ed.)= FORMATEX 2013
Shi X, Xie N, Gong J. “Recent progress in the research on microbial influenced corrosion: A bird’s eye view through theengineering lens”, inRecent Patents on Corrosion Science. 2011; 1: 118-131.
Roberge, P. R. (1999). “Handbook of Corrosion Engineering” (1st ed.). McGraw-Hill Professional. ISBN 0-07-076516, 1999
“Guidelines for Drinking-water Quality, pH in Drinking-water” in, 2nd ed. Vol. 2. World Health Organization, Geneva, 1996.
Wikipedia: “Langelier Saturation” Index https://en.wikipedia.org/wiki/hard water
Wikipedia: “Limescale in a PVC pipe caused by hard water. Original image” on Wikipedia licensed CC-BY and uploaded by Josefus, 2003.
Dreeszen P. H., “The key understanding and controlling bacterial growth in drinking water systems”, Second Edition 2003, Edstrom Industries, 4230-DS3100 10/03 IH.
Katherine E. Fish, A. Mark Osbornb and Joby Boxall, “Characterising and understanding the impact of microbial biofilms and the extracellular polymeric substance (EPS) matrix in drinking water distribution systems” Environ. Sci.: Water Res. Technol., 2016, 2,614=DOI:10.1039/c6ew00039h
Xavier JB, Picioreanu C, Van Loosdrecht MCM. “A general description of detachment for multidimensional modeling ofbiofilms” in Biotechnology & Bioengineering. 2005; 91:651–669.
Kuang F, Wang J, Yan L, Zhang D. “Effects of sulfate-reducing bacteria on the corrosion behavior of carbon steel”, in Electrochimica Acta. 2007; 52: 6084-6088.
Muyzer G, Stams AJM. “The ecology and biotechnology of sulphate-reducing bacteria”, in Nature Reviews Microbiology. 2008; 6: 441-454.
Rożej A, Cydzik-Kwiatkowska A, Kowalska B, Kowalski D., “Structure and microbial diversity of biofilms on different pipe materials of a model drinking water distribution systems” in World Journal of Microbiology & Biotechnology. 2015; 31: 37-47. doi:10.1007/s11274-014-1761-6
O.M.S. ‘Guidelines for Drinking-water Quality”, 2011;
Jang, H.-J.; Choi, Y.-J.; Ro, H.-M.; Ka, J.-O.” Effects of phosphate addition on biofilm bacterial communities and water quality in annular reactors equipped with stainless steel and ductile cast iron pipes”. J. Microbiol. 2012, 50 (1), 17−28
Kim, C.-M.; Kim, S.-J.; Kim, L. H.; Shin, M. S.; Yu, H.-W.; Kim, I. S. Effects of phosphate limitation in feed water on biofouling in forward osmosis (FO) process. Desalination 2014, 349, 51−59.
Fang, W.; Hu, J.; Ong, S. “Effects of phosphorus on biofilmdisinfections in model drinking water distribution systems”. J. Water Health 2010, 8 (3), 446−454.
Sanly Liu, Cindy Gunawan, Nicolas Barraud, Scott A. Rice, Elizabeth J. Harry, Rose Amal “Understanding, Monitoring, and Controlling Biofilm Growth in Drinking Water Distribution Systems” August 2016, DOI: 10.1021/acs.est.6b00835 Enviromental Science & Technology
Flyer presentation from Mosslein GMBH.