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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.
Mostrar más [+] Menos [-]Diatoms as an indicators of eutrophication in the Kotor and Risan Bay [Montenegro] | Dijatomejska komponenta kao indikator eutrofikacije u kotorskom i risanskom zalivu [Crna Gora]
2008
Vuksanovic, N., Univerzitet Crne Gore, Kotor (Montenegro). Institut za biologiju mora | Drakulic, D., Univerzitet Crne Gore, Kotor (Montenegro). Institut za biologiju mora | Krivokapic, S., Univerzitet Crne Gore, Podgorica (Montenegro). Prirodno-matematicki fakultet, Studijska grupa za biologiju
Samples for phytoplankton investigations were collected in annual period (September 2003 - August 2004) in the Kotor and Risan Bay. Mean-values percentage contribution of the group diatoms (Bacillariophyceae) through the annnual period were from 79.70% to 86.50%. Species Skeletonema costatum, Pseudo-mitzschia delicatissima, Leptocylindrus minimus and Chaetoceros affinis, were the main edificators of diatom population. Densities of these species were from 10**5 to 10**6 cells/cubic dm. These values are characteristic of eutrophic and extreme eutrophic area. It is needed one permanent monitoring to protect this part of Boka Kotorska Bay negative consequences.
Mostrar más [+] Menos [-]Seasonal horizontal distribution and abundance of species from family Temoride [i.e. Temoridae] at Boka Kotorska Bay [Montenegro] | Sezonska horizontalna distribucija i abundancija vrsta familije Temoridae u bokokotorskom zalivu [Crna Gora]
2008
Vukanic, D., Institut za biologiju mora, Kotor (Montenegro) | Vukanic, V. | Danilovic, J., Univerzitet u Novom Pazaru, Novi Pazar (Serbia). Tehnicki fakultet, Departman za biologiju
In Boka Kotorska Bay there are two recorded species of Copepoda from family Temoridae: Temora stylifera and Temora longicomis. This paper presents the data on horizontal distribution and abundance of these species during 2007. Temora stylifera has a wide horizontal distribution in coastal and open waters of Adriatic sea, while Temora longicomis is a typical representative of estuary-neritic waters of northern Adriatic, Kvarner area and the Italian coats at the west. Their abundance was particularly high in spring and summer.
Mostrar más [+] Menos [-]The influence of water quality of the Moraca river on Lake Skadar from the aspect of plankton dynamics | Uticaj kvaliteta vode rijeke Moraca na Skadarsko jezero sa aspekta dinamike planktona
2008
Radonjic, D., Fabrika za proizvodnju lekova Hemomont, Podgorica (Montenegro) | Nemes, K., Prirodno-matematicki fakultet, Novi Sad (Serbia)
Lake ecosystems determined by trophic conditions, accurately defined Ecological status of protected area. Trophic condition of water of Lake Skadar and two rivers, the inflow Moraca and the outflow Bojana was described via plankton data considering abundance of phytoplankton, seasonal dynamics of organotrophs, cyanobacteria, total coliforms, plankton biodegrading potential and nitrogen fixing bacterioplankton. The trophic potential for phytoplankton growth has been detected in late autumn throughout September-November 2004, contrary to early summer June-July 2005, and adverse growth of bacterioplankton in May, June and September 2005, respectively. The results of quantitative analysis of coliforms showed good relation of Lake Skadar and Ada Bojana, contrary to similarities between Moraca River and Ada Bojana estimates in accordance with the Pantle-Buck index. Nevertheless, investigation pointed out Lake Skadar beta-mesosaprobic level and moderate self-purification rate. In evaluating trophic conditions the good ecological potential of protected area has been proposed.
Mostrar más [+] Menos [-]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.
Mostrar más [+] Menos [-]Methods for environmental impact assessment | Metode procene uticaja na zivotnu sredinu
2008
Becelic, M., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za hemiju | Dalmacija, B., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za hemiju
Environmental Impact Assessment (EIA) can be defined as: the process of identifying, predicting, evaluating and mitigating the biophysical, social and other relevant effects of development proposals prior to major decisions being made. Changes in the practice of Environmental Impact Assessment and advances in information technology have greatly expanded the range of tools available in the EIA. This paper describes some of the simplest techniques and methods for EIA.
Mostrar más [+] Menos [-]Biofilm in the water supplying system | Biofilm u distribucionom sistemu vode za pice
2008
Burger, B., JKP Vodovod i kanalizacija, Subotica (Serbia) | Rafai-Milic, C., JKP Vodovod i kanalizacija, Subotica (Serbia)
Biofilm is a complex aggregation of microorganisms, principally bacteria, associated with their extracellular polymers, and surface attached. Many bacteria, mainly saprophytes, but also some oportunistic human pathogens, live in a water sypplying system. Depending on water quality and other factors, these bacteria are able to form biofilms. The formed biofilm is usually resistant to traditional supply system treating methods, including disinfection. The aim of this study is to make a contribution to the knowledge about bacteria Pseudomonas aeroginosa in biofilm structure. By understanding biofilms, wrong interpretation of microbiological results in water supply system samples analyses could be avoided.
Mostrar más [+] Menos [-]Biofilm formation potential of bacteria isolated from tap water from Novi Sad [Serbia] | Potencijal formiranja biofilma bakterija isolovanih iz vodovodne mreze grada Novog Sada [Srbija]
2008
Knezevic, P., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju | Petrovic, O., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju | Curcin, S., Prirodno-matematicki fakultet, Novi Sad (Serbia). Departman za biologiju i ekologiju
Biofilm naturally occurs in many water distributive systems. The aim of the paper is to determine biofilm forming potential of bacteria isolated from tap water from Novi Sad. A colometric crystal violet microtitre plate test was used to determine bacterial potential to form biofilm. The results show that some isolates have a great potential to form biofilm, especially when grow on higher temperature and in the reach nutritive media.
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