Stovise, Povecanje hidraulickog vremena zadrzavanja sa 18 na 24 sata nije znacajno poboljsalo uklanjanje fenola. Unatoc tome prisustvo sloja aktivnog ugljena nije bilo od znacaja u smislu uklanjanja fenola. Najbolji rezultat za umjerenu koncentraciju fenola (6,13 mg/1) dobiven je uz hidraulicko vrijeme zadrzavanja od 24 sata i uz prisustvo sloja aktivnog ugljena. Optimalni uvjeti obrade za male (2,14 mg/1) i velike koncentracije fenola (9,30 mg/1) dobivene su uz prisustvo sloja zmastog aktivnog ugljena i hidraulickog vremena zadrzavanja u trajanju od 18 sati. Varijabla koja se pratila bila je koncentracija fenola. hydraulic retention time-HRT) i prisustvo ili izostanak sloja zmastog aktivnog ugljena. Odabrane varijable, kod kojih se pratila maksimalna i minimalna razina, bile su: hidraulicko vrijeme zadrzavanja (engl. Utvrdeno je povecanje potencijala s obzirom na tri cimbenika: veliki broj mikroorganizama pronadenih u prikupljenim uzorcima otpadne vode i taloga, prilagodbu bakterija na velike koncentracije fenola (10 mg/1) i povecanje djelotvornosti uklanjanja (do 86%) dobiveno laboratorijskim ispitivanj ima Laboratorijski sustav obrade koji se sastoj ao od bioreaktora sa fiksnim slojem sa prilagodenim tankim bakterijskim slojem, optimiziran je koristenjem faktorskog eksperimentalnog pristupa. Keywords: phenols biodegradation, optimization, activated carbon, petroleum wastewaters Sazetak U okviru projekta proucavan je potencijal biorazgradivosti fenola u otpadnoj vodi iz naftne industrije u provinciji Santander u Kolumbiji. Moreover, the increase of HRT from 18 to 24 hours, showed no significant improvement in phenol removal. Nevertheless, the presence of the GAC layer was not significantly important in terms of phenol removal. The best result for the intermediate phenol concentration (6.13 mg/1) was obtained with a 24 hour HRT and the presence of GAC. The optimum treatment conditions for low and high phenol concentrations (2.14 y 9.30 mg/1), were obtained with the presence of GAC and 18 hours of HRT. Laboratorijski razprilni suilnik za prodajo, kje bi lahko kupili odlino kakovosten razprilni suilni stroj s cenovno ugodno Pirce Mini razprilni suilnik blagovne znamke TOPTION prek garancije kakovosti s certifikatom ISO&CE, od podrobnosti o prednostih razprilnega suilnika do verjeti obljubi blagovne znamke TOPTION, se obrnite na, da prilagodite. The response variable was phenol concentration. The selected variables, studied in their maximum and minimum level were: HRT (hydraulic retention time) and the presence or absence of GAC (granular activated carbon) layer. The laboratory scale treatment system, which consisted of fixed-bed bioreactors with adapted bacterial biofilm, was optimized using a factorial experimental design. An elevated potential was established, according to three important factors: the great abundance of microorganisms found in the wastewater and sludge samples collected, the bacterial adaptation to high phenol concentrations (10 mg/1) and the elevated elimination efficiencies (up to 86%) obtained in the laboratory tests. Abstract : The project studied the biodegradation potential of phenols in an industrial wastewater from an oil field in the province of Santander, Colombia.
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