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In this study, crude glycerol from the biodiesel industry was tested as a co-substrate in biogas production. To investigate the influence of crude glycerol and the underlying trace element (TE) content on the efficiency of biomethane production, a batch experiment using Automatic Methane Potential Test System (AMPTS II) was carried out. The single addition of crude glycerol significantly contributed only to the total content of K (14.4%), Si (17.3%), and P (11.6%), whereas the contributions of other metals were within the range of other substrates. The addition of crude glycerol increased biomethane production, however, its utilization beyond 1% of total volume resulted in prolonged lag phase and final cessation of biomethane production. The negative effects of inorganic salts present in crude glycerol were reflected in progressively diminishing parts of glycerol and methanol being utilized in its anaerobic digestion, posing serious problems for daily routine use. A nonlinear least square regression analysis was performed to fit the Gompertz, Logistic, Transfer, and Richards models to biomethane production. The most suitable model was the Richards model, exhibiting the best fit to the experimental curves for complex substrates. Glycerol fractions remaining after biodiesel production have to be pre-tested for their negative effects on the content of TEs and inorganic salts, lag phase in biogas production, before they are used as co-substrates in biogas production phase. V študiji smo za proizvodnjo biometana kot kosubstrat uporabili surovi glicerol iz industrije proizvodnje biodizla. Da bi raziskali vpliv surovega glicerola in vsebnosti osnovnih elementov v sledovih (TE) na učinkovitost proizvodnje biometana, smo izvedli šaržni poskus z uporabo Automatic Methane Potential Test System (AMPTS II). Enkratno doziranje surovega glicerola je pomembno prispevalo le k skupni koncentraciji K (14,4 %), Si (17,3 %) in P (11,6 %), medtem ko so bili prispevki drugih elementov v sledeh v območju koncentracij drugih substratov. Z dodajanjem surovega glicerola se je povečala proizvodnja biometana, a ko je njegova uporaba presegla 1 % celotne prostornine, smo zaznali dolgotrajno lag-fazo in končno prenehanje proizvodnje biometana. Negativni učinki anorganskih soli, prisotnih v surovem glicerolu, so se odražali v postopnem zmanjševanju koncentracije glicerola in metanola, ki so se razgradili v procesu anaerobne presnove, to pa predstavlja resne težave pri vsakdanji rutinski uporabi surovega glicerola. Izvedena je bila analiza nelinearne regresije najmanjših kvadratov z uporabo modelov Gompertz, Logistic, Transfer in Richards za kumulativno proizvodnjo metana. Najprimernejši model je bil Richards, ki se je najbolj prilegal eksperimentalno izmerjenim krivuljam kompleksnih substratov. Frakcije glicerola, ki ostanejo po proizvodnji biodizla, je treba predhodno preizkusiti zaradi negativnih učinkov, ki jih lahko povzročajo TE, anorganske soli in lag-faze, preden se lahko uporabijo kot kosubstrati za pridobivanje bioplina.

Pri deročem toku se pogosto pojavi dvofazni tok, ki ga spremlja močno razgibana, nestacionarna vodna gladina. S klasičnimi merilnimi metodami določitev povprečnega poteka vodne gladine, posebno z večjo prostorsko ločljivostjo, praktično ni možna. Pri analizi sotočja dveh deročih tokov, kjer se oblikuje stoječe valovanje z veliko vertikalno dinamiko gladine, smo za meritve gladine uporabili lasersko skeniranje. Članek prikazuje, da je z obdelavo meritev te brezkontaktne merilne metode mogoče določiti tako srednji potek kot tudi fluktuacije vodne gladine. Rezultati širijo uporabo te merilne metode, ki prinaša pomembne informacije o lastnostih vodnega toka, na številna področja hidrotehnike. Prikazane so tokovne razmere na sotočju, kjer so bile iz izmerjene dinamike vodne gladine v merilnih prerezih za nabor 168 kombinacij dveh dotokov z visokimi vrednostmi Froudovih števil (2 < Fr Two-phase flow often occurs in supercritical flows, accompanied by a highly dynamic, non-stationary water surface. Determining the average water surface profile, especially with higher spatial resolution, is practically impossible using conventional measurement methods. In the analysis of supercritical confluence flow, where standing waves with high vertical dynamic of water surface are formed, laser scanning was used to measure the free-water surface. Average profile as well as fluctuations of water surface can be determined with processing of (processed) measurements of this non-contact measurement method, as presented in this paper. The results contribute to wider use of this measurement method, which provides important information on water flow properties to many fields of hydro-engineering. Flow conditions are shown at confluences, where measurements of water surface dynamics in measured cross-section for 168 combinations of two flows with high values of Froude numbers (2 < Fr

Measurements of water surface topography are important for hydraulic structures, operation of hydropower plants as well as in the determination of water surface profiles in rivers, especially in the event of high waters. We therefore investigated the conditions at a confluence of two supercritical flows, where distinctly three-dimensional flow conditions of standing waves form, as well as an unsteady structure of the water flow in transversal and longitudinal directions. Due to the fast water surface dynamics and the phenomenon of foamed or twophase flow, the conventional measurement methods typically used in hydro engineering are not suitable for capturing complex water surface topography with high temporal and spatial resolution. Hence we wanted to verify the appropriateness of the laser scanning method for water surface topography measurements. This measurement method, which is considered less suitable or even useless for measurements of water body surfaces, was, coupled with an innovative approach, successfully used for water surface measurements of dynamic, turbulent, two-phase water flow. The acquisition of a point cloud with high temporal and spatial resolution allows for the construction of topography of intensive waving, which will also enable a topology analysis based on a phenomenological analysis of the relations between integral parameters of water flows and standing wave characteristics at the confluence.

The impact of flooding is significantly greater in urban areas than in rural environments, as the exposure and value of property and the likelihood of endangering human lives is higher. There is therefore a great need for hydraulic models, which can predict the direction and extent of flooding. Buildings pose obstacles to water flow, considerably affecting its course, wherefore buildings should be taken into account in hydraulic models. This study compared two different ways of taking account of buildings in mathematical hydraulic models. The first approach models buildings by increasing the value of the hydraulic roughness coefficient for building footprints, while the second approach includes buildings in a digital terrain model at their locations. We also analysed the sensitivity of modelling results in respect of the cell size of the computational mesh, which can significantly affect the results of hydraulic model. Hydraulic analysis was carried out with 2D model for area of Gornja Radgona, which would be the flood of the Mura River in the event a part of flood protection wall collapsed. The impact of cell size and the approach of modelling buildings on the run-off regime and flood. Posledice poplav so bistveno večje v urbanih kot v ruralnih območjih, saj so izpostavljenost in vrednost premoženja ter verjetnost ogrožanja človeških življenj večji. Zato je potreba po hidravličnih modelih, ki predvidijo smeri in obseg poplavljanja, velika. Objekti predstavljajo ovire v vodnem toku in bistveno vplivajo na njegov potek, zato jih je treba upoštevati v hidravličnih modelih. V študiji smo primerjali dva načina upoštevanja objektov v hidravličnih matematičnih modelih, in sicer s povečanjem vrednosti koeficienta hidravlične hrapavosti oziroma z zvišanjem navideznega terena na mestih objektov nad nivo poplavljenosti. Analizirali smo tudi občutljivost rezultatov modeliranja glede na velikost celice računske mreže, ki lahko bistveno vpliva na rezultate hidravličnega modela. Hidravlično analizo smo izvedli s polnim 2D hidravličnim modelom za območje Gornje Radgone, ki bi ga Mura poplavila v primeru porušitve dela betonskega zidu, ki mesto ščiti pred visokimi vodami. Kazalniki za analizo velikosti vpliva različnih načinov upoštevanja objektov in velikosti računskih celic na odtočne razmere ter poplavno nevarnost znotraj obravnavanega območja so bili med drugim globina in hitrost vodnega toka, obseg poplavljenosti ter prostorska porazdelitev razredov poplavne nevarnosti. Preverili smo tudi časovne spremembe potovanja poplavnih voda preko urbanega območja.

Two-phase flow often occurs in supercritical flows, accompanied by a highly dynamic, non-stationary water surface. Determining the average water surface profile, especially with higher spatial resolution, is practically impossible using conventional measurement methods. In the analysis of supercritical confluence flow, where standing waves with high vertical dynamic of water surface are formed, laser scanning was used to measure the free-water surface. Average profile as well as fluctuations of water surface can be determined with processing of (processed) measurements of this non-contact measurement method, as presented in this paper. The results contribute to wider use of this measurement method, which provides important information on water flow properties to many fields of hydro-engineering. Flow conditions are shown at confluences, where measurements of water surface dynamics in measured cross-section for 168 combinations of two flows with high values of Froude numbers (2 < Fr

V Sloveniji in po svetu je obseg območij poplavne nevarnosti velik, zaradi podnebnih sprememb pa naj bi se te površine še povečale. Pri nas se želi z bodočo gradnjo zgostiti pozidavo v območjih pozidave, kar pomeni, da bo treba stopnji poplavne nevarnosti prilagoditi tudi gradnjo objektov. Amfibijska gradnja stavb prinaša kakovostne dopolnitve k vodotesni oz. vodoodporni gradnji, ki se uporabljata na območjih poplavne nevarnosti. Zagotavlja varnost pred poplavitvijo, zato niso potrebne sanacije po poplavi, nima čezmernih vplivov na okolje oz. vodne tokove ter omogoča vključitev v podobo soseske in ohranja obstoječi arhitekturni značaj. Predstavljeni so glavne značilnosti in konstrukcija amfibijske stavbe, pravni vidiki umeščanja take gradnje pri nas ter nekaj primerov iz sveta.

Eden glavnih načinov prenosa invazivnih tujerodnih vrst med vodnimi ekosistemi po svetu so balastne vode, zato želimo z različnimi sistemi za obdelavo balastnih voda zmanjšati njihov negativni vpliv oziroma preprečiti širjenje invazivnih organizmov, ki so v njih. Merila za določanje učinkovitosti sistemov so pripravljena v okviru Mednarodne konvencije za nadzor in ravnanje z ladijskimi balastnimi vodami in sedimenti, ki pa še ni začela veljati. Ena od možnosti čiščenja balastnih voda so naprave s hidrodinamsko kavitacijo, v katerih se v glavnem elementu naprave ustvari nenadno zmanjšanje lokalnega tlaka, ki poškoduje ali uniči organizme v pretakajoči se balastni vodi. Predstavili bomo razvoj nove naprave, ki je pri ustvarjanju hidrodinamske kavitacije učinkovitejša kot obstoječe naprave, ki uporabljajo isti proces obdelave vode. S hidravličnimi poskusi smo najprej razvili novo zasnovo z intenzivnim tvorjenjem kavitacije, nato so sledili biološki poskusi z morsko vodo iz Piranskega zaliva, s katerimi smo preverili še učinek kavitacijske obdelave na morske organizme. Ta je bil ovrednoten z doseženo stopnjo poškodovanosti treh ciljnih morskih organizmov. Preverili smo tudi, ali bi lahko s separacijo, kot predobdelavo morske vode, učinek naprave še izboljšali. Rezultati primerjave kažejo večjo učinkovitost nove naprave na vseh testiranih organizmih in boljše obratovalne lastnosti od obstoječih kavitacijskih sistemov.

Bottom-hinged flap gates on side weirs are often used for the regulation of flow diversion in case of water abstraction for a variety of needs. In this study, a new equation for the discharge coefficient of a bottom-hinged flap gate on a side weir was proposed on the basis of discharge measurements. The equation was divided into two parts. The first part covers the impact of the sharp-crested side weir and the second the influence of the position and the width of the flap gate. In this manner, the discharge coefficient can be calculated with other authors% equations for a sharp-crested side weir, which then must be multiplied by the new proposed coefficient. Very good agreement was found between the obtained discharge coefficients and the one calculated with the proposed equation. Furthermore, the results were compared with the equations of other authors for the discharge coefficients of sharp- and broad crested side weirs. The agreement was found to be very good. Additionally, measurements of water levels along the edge of the flap gate and measurements of the velocity field were carried out with a computer-aided visualization method. From these measurements, it was possible to show that the contraction of the water jet varies with the gate-opening angle. It was also found that the side weir with a flap gate has the most favorable hydrodynamic shape around the gate-opening angle of 33°, where the discharge coefficient reaches its maximum. Ker se pri bočnih prelivih velikokrat pojavi potreba po reguliranju pretoka vode preko preliva, se v ta namen velikokrat uporabljajo t.i. zaklopne zapornice. Za ustrezno projektiranje in tudi obratovanje zaklopnih zapornic je potrebno dobro poznavanje pretočne sposobnosti obravnavanih objektov. Izdelanih je bilo že nekaj hidravličnih analiz takšnih zapornic na čelnih prelivih, medtem ko smo pri pregledu literature opazili veliko pomanjkanje raziskav takšnih zapornic na bočnih prelivih. S poznavanjem tako kvalitativnega kot tudi kvantitativnega poteka hitrosti bi lahko lažje opredelili hidravlične lastnosti ob takšnih zapornicah, s tem pa bi lahko pomembno izboljšali tako projektiranje kot tudi samo obratovanje zaklopnih zapornic na bočnih prelivih.

Due to its topographical characteristics extensive flat areas present thesurfaces where high waters might spill and retain. This has a significant impact on the transformation of flood waves, i.e. peak attenuation and lengthening of the propagation time and, consequently, positive impact on flood safety of downstream areas. The impact of theretention area on the flood wave propagation over the studied area depends on the quantity of water mass spilled into the retention area and run off regime on it. The conveyance and retention capacity of the area is significantly influenced by the land use. Since agricultural useand shrub or forest vegetation on the flood areas are generally permitted, the paper presents the results of a hydraulic analysis of the impact of vegetation extensiveness, as one of theland use, on the runoff regime in a retention area and thereby on flood wave propagation. By selected indicators the impact of the land use in the retention area on the runoff regimeand flood hazard within the studied area was analysed, as well as the impact of the landuse in the retention area on downstream conditions for theoretically assumed geometry of the riparian areas. The findings are then compared with the hydraulic response of the floodarea of Krško-Brežiško polje, where HPP Brežice is under construction. Obsežna ravninska območja zaradi svojih topografskih lastnosti predstavljajo prostor, kjer se visoke vode lahko razlijejo in zadržijo. To ima pomemben vpliv na preoblikovanje poplavnih valov, tj. znižanje konice in podaljševanje potovalnega časa vala ter posledično ugoden vpliv na poplavno varnost dolvodnih območij. Vpliv retenzijskega prostora na potovanje visokovodnega vala čez obravnavano območje je odvisen predvsem od količin vodne mase, ki se prelijejo na retenzijsko površino, in odtočnih razmer na njej. Na pretočno in zadrževalno sposobnost med drugim pomembno vpliva tudi raba prostora. Ker je na poplavnih območjih praviloma dovoljena kmetijska raba oz. grmovna ali gozdna zarast, prispevek podaja rezultate hidravlične analize vpliva obsežnosti zarasti, kot ene od rabe prostora, na odtočne razmere v retenziji in s tem na potovanje poplavnih valov. Z izbranimi kazalniki je analiziran tako vpliv rabe prostora retenzije naodtočne razmere in poplavno nevarnost znotraj obravnavanega območja kot tudi vpliv rabe prostora retenzije na dolvodne razmere za teoretično predpostavljeno geometrijo obvodnega prostora. Ugotovitve so nato primerjane z odzivom poplavnega območja Krško-Brežiškega polja, kjer se pripravlja gradnja HE Brežice.

V kompleksnih primerih prostorskega umeščanja infrastrukture, kot so na primer hidroenergetski objekti, ki zajemajo daljše odseke vodotokov in ki lahko pomembno spremenijo odtočni režim in poplavno nevarnost v obvodnem prostoru, je za projektante ključna zahteva natančnost in zanesljivost napovedi načrtovanega stanja. Zato se v takšnih primerih k hidravlični analizi pristopi z izdelavo tako fizičnega kot matematičnega modela. Hibridni hidravlični model združuje prednosti fizičnega in matematičnega modeliranja: fizični model natančneje opiše pojave turbulence in druge tridimenzionalne pojave, ki se pojavljajo na obravnavanem območju; matematični model pa nadgrajuje fizični model, ko je potrebno izdelati veliko število simulacij pri različnih spremembah v fazi projektiranja elektrarne in nudi boljši pregled rezultatov, kar pomembno koristi kot podpora odločanju. Takšen pristop je bil uporabljen tudi pri projektiranju hidroenergetske izrabe reke Save na območju med Krškim in državno mejo s Hrvaško, kjer je kompleksnost morfoloških, hidroloških, hidravličnih in antropogenih dejavnikov zelo velika. Poleg urejanja odtočnega režima, vezanega na obratovanje načrtovane hidroelektrarne, je bilo treba upoštevati tudi ohranjanje stanja poplavne varnosti na širšem območju jezu Nuklearne elektrarne Krško in obstoječega odtočnega režima iz obravnavanega območja dolvodno od sotočja s Krko. V prvi fazi je bil izhodiščni model uporabljen za analize obstoječega stanja (preučitev odtočnega režima, trenutnih retenzijskih sposobnosti in poplavne nevarnosti na vplivnem območju načrtovane elektrarne), v drugi fazi pa so bile z vidika poplavne varnosti z modelom analizirane variante zasnove HE Brežice in HE Mokrice ter drugi načrtovani posegi v prostor in ukrepi za zagotavljanje poplavne varnosti v vplivnem območju obeh HE. V postopku načrtovanja so bile optimizirane lokacije nasipov akumulacije, dimenzije in lokacije objektov za razbremenjevanje ob visokih vodah ter prelivni objekt HE. Ugotovili smo, da se s tako načrtovanimi objekti obstoječa poplavna in erozijska nevarnost ter ogroženost zmanjša, obstoječ odtočni režim in retenzijska sposobnost pa se bosta ohranila tudi po izgradnji vseh objektov.

The paper presents a study of the influence of integral parameters of an industrial settling tank on the process of sedimentation. An organic water suspension was used in the experiment where the impact of the suspension age on sedimentation was determined experimentally and by computer-aided visualization. Measurements of the inlet- and outlet suspension concentration, the difference in the level of suspension between the reservoir and settling tank as well as the suspension volume flow rate were carried out on a newly developed continuous sedimentation tank. The results of the measurements served as the basis for a phenomenological multi-regression model that was developed to determine the functional dependence of the ratio between inlet- and outlet suspension concentration on the independent parameters of the process. According to the obtained results of the model, the most influential parameters of the sedimentation process are the inlet concentration and the mass flow of the suspension. Članek predstavlja študijo vpliva integralnih parametrov industrijskega usedalnika na sedimentacijski proces oz. proces usedanja delcev. Organska vodna suspenzija delcev je bila uporabljena pri eksperimentu, kjer je bil s pomočjo računalniško podprte vizualizacije določen tudi vpliv starosti suspenzije na usedanje delcev. Na eksperimentalnem usedalniku so bile izvedene meritve vstopne in izstopne koncentracije suspenzije, razlike nivoja suspenzije med rezervoarjem in usedalnikom, kot tudi prostorninski pretok suspenzije. Rezultati meritev so služili kot osnova za fenomenološki multiregresijski model, ki je bil razvit z namenom ugotoviti funkcijsko odvisnost razmerja vstopne in izstopne koncentracije od neodvisnih parametrov procesa. Glede na rezultate modela sta najvplivnejša parametra procesa usedanja vstopna koncentracija suspenzije in prostorninski tok le-te.

Enforcement of the European Union's legal order is bringing substantial expertinvolvement even in water management. The main act, the Water Framework Directive (WFD), is followed by numerous others. Substantial investments will be demanded even in Slovenia to comply with the Uniform Waste Water Treatment Directive (UWWTD) and Integrated Pollution Prevention and Control Directive (IPPCD). On the operative utilities are dealt with by municipalities, while states have to fulfil national responsibilities to the EU. Timely achievement of goals demands coordinated activities based on expert guidelines. One of UWWTD's basic parameters is the agglomeration, which is a uniform area of suchcompact settlement, to which special stipulations and dynamics from the directive can be applied. The criteria for compactness is population density per hectare. A suitable grid of square one-hectare cells was devised for Slovenia, with three types of settlement cells. Areas of particular agglomerations are formed by two adjoining cells whose population is most dense. The area of agglomerations is much smaller than settlement area in the register of territorial units, thus Slovene summary obligations from the directive are much smaller, as was shown in the expert guidelines for the National programme for collecting and treating waste communal and atmospheric water. These agglomerations are the basic element for planning and intervention even in other water resource planning (flood prevention measures etc.) and could also be used for programmes of provision of utilities, as wellas other physical development plans. Uveljavitev pravnega reda Evropske unije prinaša obsežno strokovno delo tudi vvodno gospodarstvo. Na vodilno, Okvirno direktivo o vodah (WFD) se navezujejoštevilne druge. Izpolnjevanje določil Direktive o ravnanju z odpadnimi komunalnimi vodami (UWWTD) in Direktive o celovitem preprečevanju inomejevanju onesnaževanja (IPPCD) bo tudi v Sloveniji zahtevalo znatne investicije. Področje komunalnih voda na operativni ravni ureja občina, državapa mora izpolnjevati prevzete državne obveznosti do EU. Pravočasno doseganje ciljev zahteva koordinacijo aktivnosti, temelječo na strokovnih podlagah. V UWWTD je eden osnovnih parametrov aglomeracija kot zaokroženo območje tako zgoščene poselitve, da zanj veljajo posebna določila in dinamika iz direktive. Merilo zgoščenosti je število prebivalcev na hektar. Za Slovenijo so bili izdelani najprimernejša mreža eno-hektarskih kvadratnih celic in trije tipi celic poselitve. Območje posamezne aglomeracije sestavljajo celice dveh najgostejših tipov poselitve, ki se stikajo. Površina aglomeracij je mnogo manjša od površine naselij iz RPE, zato so skupne slovenske obveznosti iz direktiv manjše, kar pokaže tudi strokovna podlaga za nacionalni program zbiranja in čiščenja odpadnih komunalnih in padavinskih voda. Izdelane aglomeracije so osnovni element načrtovanja in ukrepanja tudi za druga vodnogospodarska načrtovanja (npr. proti poplavni ukrepi), lahko pa si bi jih uporabilo tudi za programe komunalnega opremljanja in druga razvojna načrtovanja v prostoru.

Maritime construction in front of Izola restitutes an enriched former state. The island is positioned in a place where there are no legal regimes enforced by the state or local community. Legal regimes that determine the exploatationof water rights and limitations (management, exploatation, use) can actually limit all, therefore their synthesis has to be the starting pointfor analysing the harmony of present uses and for planning future uses ofthe sea and coastal area. For example the aquatorij of the shell fish mariculture positioned in the Strunjan Bay without adequate analysis of the prevailing conditions is causing conflicts of uses, unacceptable limiting of general use of the sea and prohibitive limitations in neighbouring areas. The analysis done for the island in front of Izola shows that there are no such consequences. Only uses in the public interest were proposed, since when assessing suitability first public and then common interests where considered,possible specific (e.g. entrepreneurial) uses were permited only ifthe afore mentioned weren't obstructed. Thus integral management of the coastal area was enabled, with respect to functional ties between the land andsea. Pomorska gradnja pred Izolo prinaša obogateno vrnitev prejšnjega stanja. Otok je umeščen tja, kjer ni pravnih režimov, ki jih uveljavljajo država ali lokalna skupnost. Pravni režimi, ki določajo uživanje vodnih pravic in omejitve (gospodarjenja, ravnanja, rabe), lahko omejujejo pravzaprav vse, zato mora biti njihova sinteza izhodišče za analizo skladnosti današnjih rab in za načrtovanje prihodnjih rab morja in obalnega območja. Na primer akvatoriji školjčišč, umeščenih brez zadostne analize stanja v Strunjanski zaliv, povzroča konflikte rab, nesprejemljivo omejevanje splošne rabe morja in nedovoljeno omejevanje sosednjih območjih. Opravljena analiza pri otoku pred Izolo kaže, da tam takšnih posledic ni. Tam so predvidene le rabe v javnem interesu, saj se pri presoji sprejemljivosti najprej pretehtajo javni in nato skupinski interesi, morebitne posebne (npr. podjetniške) rabe pa dovolijo le, če ne omejujejo prej navedenih. To omogoča integralno gospodarjenje z obalnim območjem, ki upošteva funkcionalne povezave kopnega in morja.

The present-day water supply services use advanced technologies in order to provide their customers with constantly improving services. This involves the adoption of a pro-active approach to the operational management of distribution networks as a means of improving customer satisfaction. As a result, an analysis of the necessary changes in the network management and the operations, and their effects on customers, along with the reduction of operating costs and investments, was performed with optimisation tool called genetic algorithms. This paper presents work performed on a small but complex, water-suply system. The work comprised building a model, model calibration, and an analysis of the development perspectives to ensure the long-term coverage of customer neeeds, while taking into account the limited resources available. During the work some tools were developed, based predominantly on the EPANET software, which uses genetics algorithms as an optimisation procedure. This enabled an advanced analysis of the existing performance of the water-supply system as well as an analysis of the different development options. V današnjem času se tudi na področju vodenja sistemov za oskrbo z vodo vse bolj uporabljajo napredna orodja. Z njimi se skuša zajeti tako uspešno poslovanje službe, ki je zadolžena za vodenje, kakor zagotoviti nemoteno oskrbo z vodo. Za dosego takih ciljev, pri katerih je treba iskati optimalno rešitev med ekonomskimi, pravnimi in tehničnimi kriteriji, smo uporabili orodje imenovano genetski algoritmi. Nalogo smo izvedli na stvarnem manjšem, vendar kompleksnem vodovodnem sistemu. Na vzpostavljenem umerjenem hidravličnem modelu smo izvedli analizo možnih posegov, s katerimi bi zagotovili dolgoročno nemoteno oskrbo z vodo s čim manjšimi spremljajočimi stroški. Med delom smo razvili orodje, ki temelji na programski opremi EPANET in za optimizacijski del uporablja genetski algoritem. To nam je omogočilo napredno analizo trenutnih obratovalnih razmer vodovodnega sistema in iskanje optimalne rešitve med možnimi razvojnimi rešitvami. ...