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Mathematical Modelling in Civil Engineering

The Journal of Technical University of Civil Engineering of Bucharest

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Behavior of Aluminum Based Coagulants in Treatment of Surface Water–Assessment of Chemical and Microbiological Properties of Treated Water

Daniela Spînu (Gologan)
  • Corresponding author
  • Chemist Engineer, Head of the Laboratory of Paltinu Water Treatment Plant, PhD student Technical University of Civil Engineering
  • Email:
/ Gabriel Racoviteanu
  • Professor, PhD, Technical University of Civil Engineering of Bucharest, Faculty of Hydrotechnics
  • Email:
Published Online: 2014-04-12 | DOI: https://doi.org/10.2478/mmce-2014-0002


Pre-polymerized inorganic aluminum coagulants have high efficiency in reducing turbidity, total, dissolved, biodegradable organic carbon and microbiological content of surface waters used for drinking, while obtaining low concentrations of residual aluminum after the coagulation phase. Correlation between turbidity raw water and coagulant dose is logarithmic being influenced by temperature and organic content of surface waters. The coagulant’s effect on the organic content of the raw water is closely related to the microbiological concentration and can thus determine the mathematical correlations between the two types of parameters after the coagulation-flocculation stage that can be used to assess the water biostability coagulant action.

Keywords: pre-polymerized inorganic coagulant; poly-aluminum chloride; poly-aluminum sulfate chloride; poly-aluminum silicate chloride biodegradable organic carbon; biostability


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About the article

Published Online: 2014-04-12

Published in Print: 2014-03-01

Citation Information: Mathematical Modelling in Civil Engineering, ISSN (Online) 2066-6934, DOI: https://doi.org/10.2478/mmce-2014-0002. Export Citation

© by Daniela Spînu (Gologan) . This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY-NC-ND 3.0)

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