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Influence of road salt on the biological removal of nitrogen

Acta Montanistica Slovaca. 2007;12(3):217-222


Journal Homepage

Journal Title: Acta Montanistica Slovaca

ISSN: 1335-1788 (Print)

Publisher: Technical University of Kosice

LCC Subject Category: Technology: Mining engineering. Metallurgy | Science: Geology

Country of publisher: Slovakia

Language of fulltext: English, Slovak

Full-text formats available: PDF



Eliška Horniaková

Milan Búgel


Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 30 weeks


Abstract | Full Text

Processes occuring in the aeration tank remove nitrogen from the organic substances in wastewater by using the bacterii. Nitrification utilize the metabolism of aerobic bacterii Nitrosomonas, Nitrococus, Nitrospira, Nitrobacter Nitrocystis a Nitrosobolus. Pseudosomonas, Chromobacterium, Denitrobacillus a Micrococus are denitrification anaerobic bacterii. The bacterii are lithotrophic and they are sensitive to pH of wastewater. Chlorine and heavy metals are toxic for these bacterii. For a correct grow, reproduction and metabolism, temperature above 10 ºC is needed but the ideal temperature is from 20 to 30 ºC. An intensive cold reduces or even stops the activity of bacterii.Cold road salt flow to a sewage and then to the aeration basin. Many of nitrification microorganisms dead because their cells lyse and their content flow into the tank. NaCl is toxic for bacterii. From aeration basin a high amount of N-NH4 flows out. The sludge may be a slightly flocculate and the effluent water may be turbid