خيارات البحث
النتائج 1 - 10 من 53
Example of calculation of the coincidence of water level and quality parameters of the groundwaters
1998
Marcetic, I. (Rudarsko-geoloski fakultet, Beograd (Yugoslavia). Institut za hidrogeologiju) | Prohaska, S. | Srna, P. | Isailovic, D.
In this paper the short review of the results of calculation of the coincidence between the water level and quality parameters at the gauging station Cuprija-rail bridge (Serbia, Yugoslavia) is presented. The basic principles of the applied method and criteria for the estimation of the statistic significance of coincidence indicators are given. At the end of the analyses and comments of the obtained results, as well as the possibility for application of this methodology are given. The paper gives numerical quantities of the estimated indicators of statistical significance of the coincidence of water level and quality parameters of groundwater. Also, the graphical illustration, which shows the common exceeding probabilities of the water level and quality parameters, is presented.
اظهر المزيد [+] اقل [-]Contribution to the better knowledge of groundwater quality on the territory of eastern Srem [Serbia, Yugoslavia]
2001
Obradovic, V. | Damjanovic, M. | Dimkic, D. (Institut za vodoprivredu "Jaroslav Cerni", Beograd (Yugoslavia))
[The influence of wastewater of the thermal power plant "Kostolac" on groundwaters and the rivers Danube and Mlava [Serbia, Yugoslavia]]
2001
Maljevic, E. | Despotovic, N. | Vasiljevic, M. | Stupar, M. (Institut za zastitu zdravlja Srbije "Dr Milan Jovanovic - Batut", Beograd (Yugoslavia))
In this paper a part of results of the wastewater quality control from the Thermal Power Plant "Kostolac", water from the rivers Danube and Mlava, and groudwaters near by (Serbia, Yugoslavia), is considered. In order to protect environment from the effects of hurtful substances make during working process of Thermal Power Plant "Kostolac" is especially does using solid fuel (coal), the Institute of Public Health of Serbia following an approved program checks upon the quality of groundwaters, water the rivers Danube and Mlava including the wastewater from the Thermal Power Plant "Kostolac", four times a year. The results of our research point out to the hurtful effects of the wastewater from Thermal Power Plant "Kostolac" on the groundwater.
اظهر المزيد [+] اقل [-]Influence of oil spill after bombarding of oil refinery on microbiological quality of groundwater in resources "Ratno Ostrvo" [Serbia, Yugoslavia]
2001
Petrovic, O. | Dalmacija, B. | Simeunovic, J. | Radnovic, D. | Matavulj, M. | Gajin, S. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za biologiju)
Evaluation of groundwater contamination on the locality of the water source "Ratno Ostrvo" as a consequence of a "Novi Sad" refinery destruction [Serbia, Yugoslavia]
2001
Agbaba, J. | Dalmacija, B. | Ivancev-Tumbas, I. | Djurendic, M. | Becelic, M. | Roncevic, S. | Borisev, V. | Brenesel, D. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju)
An intriguing case of detection of PCB [polychrorinated biphenyls] residues
1997
Babic, S. (Beocinska fabrika cementa - BFC, Beocin (Yugoslavia)) | Vojinovic-Miloradov, M. | Sudji, J. | Buzarov, D.
The results of the determination of PCB (polychlorinated biphenyls) residues by gas chromatography, in the samples of underground water of one alluvial well of the river Danube (Serbia, Yugoslavia) have been presented. The residues of PCB (polychlorinated biphenyls) in examined samples (February-March period, 1997) were detected.
اظهر المزيد [+] اقل [-]Coagulation of natural organic matter in groundwater using aluminium salts
1999
Karlovic, E. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju) | Dalmacija, B. | Zejak, J. | Bajevic, Lj. | Djeric, J. | Djuric, Z.
Removal of natural organic matter (NOM) from groundwater by aluminium sulphate and polyaluminium chloride (PACl) was investigated. The maximal decrease of UV absorbance at 254 nm was near 70%. Decrease of permanganate value about 50% was achieved by PACl coagulation. Similar effect can be achieved using 2.5 fold higher concentration of aluminium sulphate. Coagulation process at pH 5.5 was successful with 3-5 times less concentration of coagulant. The heterogenous composition of NOM in water had been changing by coagulation. The total trihalomethane formation potential is 50-60% lower in coagulated water. The greatest removal was success for chloroform precursors.
اظهر المزيد [+] اقل [-]Removal of organic matter from water using activated carbon produced from domestic [Yugoslav] anthracite
1999
Tamas, Z. | Zejak, J. | Becelic, M. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju)
Removal of natural organic matter from water was investigated using granulated activated carbon. Groundwater from northern Banat region (Serbia, Yugoslavia) was used. Samples of raw water and water after coagulation were ozonated and than GAC adsorption was performed. The investigation was carried out under the static conditions to determine the GAC adsorption capacity and kinetic coefficients.
اظهر المزيد [+] اقل [-]Microbiological quality of groundwater of water source of the city of Novi Sad [Serbia] | Mikrobiološki kvalitet podzemnih voda izvorišta vode za piće grada Novog Sada [Srbija]
2011
Petrović, O., Prirodno-matematički fakultet, Novi Sad (Serbia) | Knežević, P., Prirodno-matematički fakultet, Novi Sad (Serbia) | Simeunović, J., Prirodno-matematički fakultet, Novi Sad (Serbia) | Aleksić, V., Prirodno-matematički fakultet, Novi Sad (Serbia) | Petrušić, M., Prirodno-matematički fakultet, Novi Sad (Serbia)
The paper presents results of microbiological quality of three drinking water sources – Ratno ostrvo, Petrovaradinska ada and Strand. The following analyses were carried out in 2010: total count of aerobic mesophilic bacteria at 37 deg C, count of organotrophs (categorization according to Kohl), aerobic facultative organotrophs, lipolytic and hydrocarbon oxidizing bacteria. Organotrophic count was determined on low nutritive R2A medium. Enzymatic activity of water was also determined and water was categorized according to index of phosphatase activity (IFA).
اظهر المزيد [+] اقل [-]Influence of the ozonation process on the contents of selected chlorine disinfection by-products precursors | Uticaj procesa ozonizacije na sadržaj prekursora odabranih dezinfekcionih nusprodukata hlora
2011
Molnar, J., Prirodno-matematički fakultet, Novi Sad (Serbia) | Agbaba, J., Prirodno-matematički fakultet, Novi Sad (Serbia) | Dalmacija, B., Prirodno-matematički fakultet, Novi Sad (Serbia) | Rončević, S., Prirodno-matematički fakultet, Novi Sad (Serbia) | Kragulj, M., Prirodno-matematički fakultet, Novi Sad (Serbia) | Rajić, Lj., Prirodno-matematički fakultet, Novi Sad (Serbia) | Watson, M., Prirodno-matematički fakultet, Novi Sad (Serbia) | Leovac, A., Prirodno-matematički fakultet, Novi Sad (Serbia)
This study was performed to investigate the influence of the ozonation process on natural organic matter (NOM) and trihalomethane, haloacetonitrile and chloropicrin precursors in groundwater. The largest reduction in dissolved organic carbon, DOC (up to 25%) and UV 254 values (up to 69%) was achieved using 3 mg O3/mg DOC. Reducing the total organic matter resulted in a reduction of trihalomethanes precursors to 194 micro g/L. On the other hand, when it comes to the precursors of the high priority nitrogenous disinfection by-products, the oxidation of NOM by ozone and the resulting increase in organic matter with a low molecular lead to an increase in the haloacetonitrile precursors compared to the raw water and the formation of chloropicrin precursors.
اظهر المزيد [+] اقل [-]