ECOLOGICAL POTENTIAL OF SURFACE WATERS IN NATURAL SCIENTIFIC RESERVE “LOWER PRUT”

• Main Authors: Maria Sandu, Anatol Tarita, Raisa Lozan, Natalia Zgircu, Elena Mosanu, Tatiana Goreacioc, Alexandru Zlotea, Anna Comarnitchi, Iulia Sidoren, Sergiu Turcan, Adrian Tarita
• Format: Article
• Language: English
• Published: Academy of Sciences of Moldova, Institute of Chemistry 2016-06-01
• Series: Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry
• Subjects: Lake Beleu; self-purification capacity; nitrification process; BOD5; COD-Cr.
• Online Access: http://www.cjm.asm.md/sites/default/files/article_files/ChemJMold201611(1)_21-26_Sandu.pdf

The research results have marked a low value of the self-purification capacity for Beleu Lake water, between 0.12 and 0.19, which is of 1.2-2 times smaller than the one from Prut River (0.25), correlating positively with the values of BOD5, COD-Cr and the time of biochemical oxidation of ammonium ions. The evolution of stage NH4+(NH3) → NO2- in the process of nitrification in lake water in November 2014 takes place about 25 days and the process NO2- → NO3- - more than 35 days, the duration about 2 times higher than in lake water stages from 2015 and 2.8-3.0 times higher than that of the model with water from Prut River.