StatusThe thesis was presented on the 20 May, 2011
Approved by NCAA on the 8 July, 2011
Abstract– 0.43 Mb / in romanian
The structure of thesis: Introduction, 5 chapters, Conclusions and Recommendations, Bibliography of 220 titles, 34 figures, 17 tables, the List of abbreviations and 117 pages basic texts
The number of publications: 38, 14 article and 24 published conference communications.
The purpose and objectives of the paper: The dissertation falls within the field of environmental protection, and, in particular, protection of natural waters. Scientific data presented in the work describe the displayed in natural water Self-purification and nitrification processes, the impact of different classes of organic substances and substrates on the biochemical oxidation of ammonium ion.
The novelty and scientific originality: Estimation results show that in the Dniester river water prevail organic substances with molecular weight 120-350 a.u. Complexing capacity of Cu 2 + of organic substances with molecular weight from 0.25 to 5000 and 60-70000 of water fl. Dniester and Prut is 0.09 to 0.53 mg/dm3. Aliphatic amines were found to influence the biochemical oxidation of ammonium in water in the order trimethylamine, dietilamină -dimethylamine, methylamine, and respectively the aromatic amines: diphenylamine-aniline, naphthylamine- phenylenediamine, phenylhydrazine.The presence of anionic and nonionic surfactants in the MAC stimulates of ammonium oxidation, but cationic STA, petroleum products, copper compounds mixed with lindan and dieldrin – depresses it. Gravel help to speed up 2-3 times the rate of nitrification process.
The theoretical importance and applied value of the work: Research has confirmed a need to assess the influence of organic substances on nitrification processes, Self-purification, complexing of heavy metals. It has proved the beneficial role of natural gravel substrates in the process of nitrification, which can be used to raise the efficiency of Self-purification in surface and waste water treatment.