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The ClO2 oxidation properties examination on iron and manganese example in drinking water treatment | Ispitivanje oksidacionih osobina ClO2 na primeru gvozdja i mangana u tretmanu vode za pice
2008
Milenkovic, N., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia) | Popovic, L., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia) | Mitrovic, T., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia)
Due to very high concentration of organic matter there is a great need for alternative solutions for drinking water disinfection in the world. Chlorine dioxide has been successfully used for almost 50 years for disinfection and later for taste removal, odor control, color reduction and oxidation of inorganic compounds such as iron and manganese. An advantage of using chlorine dioxide instead of chlorine is that it does not directly react with organic matter and form halogenated byproducts when it is used for disinfection. THMs, such as CHBr3, ChCl3 etc, are considered as most dangerous for people health. In this article we are to represent the results got from raw water disinfection treatment with chlorine dioxide.
Show more [+] Less [-]Ecological potential of centric diatoms in the Danube-Tisza-Danube canal network (DTD) in Banat region (Serbia) | Ekoloski potencijal centricnih dijatomeja Hidrosistema Dunav-Tisa-Dunav (DTD) u Banatu (Srbija)
2008
Nemes, K. | Matavulj, M., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju | Lozanov-Crvenkovic, Z., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za matematiku i informatiku | Simeunovic, J., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju | Bugarski, R., Hidrometeoroloski zavod Republike Srbije, Beograd (Serbia)
The winter ecological status of the Danube river [near Novi Sad, Serbia] based on microbiological norms of water quality | Zimski ekoloski status reke Dunav kod Novog Sada [Srbija] na bazi pojedinih mikrobioloskih normi kvaliteta vode
2008
Nemes, K. | Matavulj, M. | Gajin, S. | Simeunovic, J. | Lozanov-Crvenkovic, Z. | Dalmacija, B., Prirodno-matematicki fakultet, Novi Sad (Serbia)
Risk and insurance aspects in water management | Aspekti rizika i osiguranja u upravljanju vodama (vodoprivredi)
2008
Bajcetic, M., JVP Vode Vojvodine, Novi Sad (Serbia) | Lazic, D., JVP Vode Vojvodine, Novi Sad (Serbia)
The paper deals with the essential of economic insurance within the whole economy procedure in the water management companies. As it is well known, the fundament of insurance is risk itself. The risk, by its appearance, power and intensity, has its impacts on processes, objects and activities in the water management. That is why is very important to know and apply knowledge, awareness and comprehension about risk management in the field of water management. Any sort of risks must be analyzed, planned, controlled, organized, prevented, repressed, averted and fixed in order to decrease detriments and disadvantages. The best way to preclude all predicted and unpredicted tribulations and costs is to go all-out for the rules of covenanted and unsolicited types of insurance. The paper also gives a brand - new approach to bypassing risks within management by the system of covenanted and unsolicited insurances.
Show more [+] Less [-]Water filtration through a column with natural aluminosilicates | Filtracija vode kroz stub adsorbensa prirodnih aluminosilikata
2008
Stefanovic, D., Imlek AD, Beograd - Padinska Skela(Serbia) | Batinic, B., Univerzitet u Beogradu, Beograd (Serbia). Gradjevinski fakultet | Vojnovic-Miloradov, M., Univerzitet u Novom Sadu, Novi Sad (Serbia). Fakultet tehnickih nauka | Lemic, J., Lad Group, Beograd (Serbia)
In this study possibilities for application of natural aluminosilicates, zeolites in the wastewater treatement has been investigated. Under the laboratory conditions the pilot experimental a column filled with aluminosilicates was established. Technological characteristics of the system were estimated by wastewater flow monitoring and calculation of Darcy filtration coefficient.
Show more [+] Less [-]Removal of heavy metals from water using Lagenaria vulgaris as a biosorbent | Uklanjanje teskih metala iz vode primenom biosorbenta na bazi Lagenarie [i.e. Lagenaria-e] vulgaris
2008
Mitic-Stojanovic, D., JKP Vodovod , Vranje (Serbia) | Bojic, A., Univerzitet u Nisu, Nis (Serbia). Prirodno-matematicki fakultet, Odsek za hemiju
This study investigates the possibilities of using Lagenaria vulgaris biomass as a biosorbent for removal of heavy metals from wastewater and natural water. The experiments were carried out with model solutions of Pb2+, Cd2+, and Zn2+, in batch system. The effects of contact time, temperature, initial metal concentration and adsorbent doses, on the adsorption of heavy metals have been studied. Results show that biosorbent based on Lagenaria vulgaris represent efficient and low-cost means for pretreatment of heavy metals contaminated waters.
Show more [+] Less [-]Phytoplankton production of the salt puddles Novo Ilje 1 and Novo Ilje 2 near Melenci (Vojvodina, Serbia) | Produkcija fitoplanktona slanih bara Novo Ilje 1 i Novo Ilje 2 kod Melenaca (Vojvoidna, Srbija)
2008
Fuzinato, S. | Fodora, A., Univerzitet u Beogradu, Beograd (Serbia). Bioloski fakultet | Karadzic, V., Institut za javno zdravlje Srbije Dr Milan Jovanovic Batut, Beograd (Serbia) | Subakov-Simic, G. | Krizmanic, J. | Andrejic, J., Univerzitet u Beogradu, Beograd (Serbia). Bioloski fakultet
Explorations were done at the location Ilje, near Melenci. Novo Ilje 1 is a canal used for regulation of irrigation at the local fields. Novo Ilje 2 is a bog that dries out during the periods of low precipitation. Quantitative phytoplankton analysis of Novo Ilje 1 sample from 2003 determined that total amount of cells was 1.5 x 10**5 cell per liter. Total amount of cells in 2004 sample was 1.8 x 10**5 cell per liter. Quantitative phytoplankton analysis of Novo Ilje 2 sample from 2003 determined that total amount of cells was 1.7 x 10**5 cell per liter. Total amount of cells in 2004 sample was 3.1 x 10**5 cell per liter. Phytoplankton biomass in Novo Ilje 1 sample from 2003 was 2.6 x 10**8 cubic micrometer/l, and in 2004 sample was 1.09 x 10**8 cubic micrometer/l. Phytoplankton biomass in Novo Ilje 2 sample in 2003 was 3.06 x 10**8 cubic micrometer/l, and in 2004 sample was 1.62 x 10**8 cubic micrometer/l.
Show more [+] Less [-]Phytoplankton of reservoir Grliste [Serbia] | Fitoplankton akumulacionog jezera Grliste [Srbija]
2008
Vuckovic, M. | Mirjacic-Zivkovic, B., Zavod za javno zdravlje Timok, Zajecar (Serbia)
This paper shows the results of research of some phytoplankton and saprobiological characteristics of water in reservoir Grliste and the flowing rivers during the period of January 2001 to December 2007. During this period of researching, phytoplankton community was characterized by forms of Bacillariophyta, Chlorophyta, Cyanophyta, Chrysophyta, Pyrrophyta and Euglenophyta. Saprobiological analyses using bioindicatory species of algae showed oligosaprobic and beta-mezosaprobic characteristics of water in the reservoir. The analyses showed the poor water quality of Lesovacka and Lenovacka rivers which flow in reservoir. This water was determined as beta-mezosaprobic and alfa-mezosaprobic type. The phytoplankton was characterized by forms of Bacillariophyta, Chlorophyta, Pyrrophyta and Euglenophyta.
Show more [+] Less [-]The degree of metals (Fe and Cu) accumulation in aquatic macrophytes in lakes near city Kragujevac [Serbia] | Stepen akumulacije metala (Fe i Cu) u nekim vodenim makrofitama jezera u okolini Kragujevca [Srbija]
2008
Brankovic, S., Prirodno-matematicki fakultet, Kragujevac (Serbia) | Pavlovic, D., Prirodno-matematicki fakultet, Kragujevac (Serbia) | Topuzovic, M., Prirodno-matematicki fakultet, Kragujevac (Serbia) | Milivojevic, J., Institut za strna zita, Kragujevac (Serbia)
The results of researches of the degree of metals (Fe and Cu) of accumulation in certain species aquatic macrophytes and their organs which sampled in three lakes near city Kragujevac are exposed in this study. The results show variability of the degree of accumation of Fe and Cu among species, their organs and researched localities, and capacity of some aquatic macrophytes species and their organs which accumulate high level of mentioned metals from aquatic environment. Results obtained in this reserches pointed important role of macrophytes vegetation in bioindication and phytoremediation, and ability for use for monitoring pollutants, in studies of quality aquatic ecosystems and their protection, repairing and revitalization.
Show more [+] Less [-]Distribution of small units ass. Salicetum albae-fragilis, Soo 1958 under the antropogenic influcence [i.e. influence] in the middle reaches of the Moravica river [Serbia] and its indicative values | Razvoj sastojine ass. Salicetum albae-fragilis, Soo 1958. pod antropogenim uticajem u srednjem toku Moravice [Srbija] i njene indikatorske vrednosti
2008
Milenovic, V., Osnovna skola Vuk Karadzic, Zitkovac (Serbia) | Randjelovic, N., Prirodno-matematicki fakultet, Nis (Serbia)
During the field research of phytocenous characteristics of the Moravica river flow and the influence of anthropogenic pollution, hygrophilous ass, Salicetum albae-fragilis (willow grove-shrubs in moist habitats) which grows in the middle reaches of the Moavica, has been found. The community develops in the middle reaches and it indicates highly polluted waters. The aim of this paper is to establish phytocenous contents of the community and ecological conditions of the habitat (indicatives of water quality of the Moravica river) based on ecological index of vascular plants.
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