Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XVIII
Written by Dumitru VÂJU, Grigore VLAD, Mihaela HETVARY, Gabriela BAISAN, Sorin Claudiu ULINICI
The paper presents a case study, for the drinking water plants which involve a bio-filtration step used to reduce simultaneously, certain pollutants (iron, manganese, ammonia) in a single stage filtration. The bio-filtration step, with microorganisms multimedia doped layers was compared with a classic filtration step. The new approach shows the advantage of: higher yields of water pollutants reduction at low specific energy consumption. The bio-filtration process is preceded by an electrochemical pre-treatment whose role is: oxidation of dissolved substances from water, turn non biodegradable organic substances in biodegradable, favour coagulation and flocculation processes, bio-filtration process improvement. In order to optimize the process, was developed and validated a mathematical model of biofiltration process.
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ammonia
