Influence of composition synthetic water on treatment in membrane bioreactors

U radu je obrađivana sintetska otpadna voda pomoću aktivnog mulja primjenom membranskih bioreaktora Zenon i Kubota sa uronjivim membranama. Proces obrade je na MBR-u Zenon vođen 43 dana, a na MBR-u Kubota 17 dana. Tokom procesa na MBR-u Zenon sintetska voda je 19 dana sadržavala samo glukozu i amonijev-klorid pri čemu je uočen poremećaj u učinkovitosti obrade te odumiranje bakterija iz aktivnog mulja. Pri obradi kompleksne sintetske otpadne vode ponovo je uspostavljena dobra učinkovitost uklanjanja. Uzgoj bakterija aktivnog mulja na nepotpunoj sintetskoj vodi doveo je i do smanjenja denitrifikacijske sposobnosti bakterija. Tokom obrade na MBR Kuboti prilagođenog na rad s sintetskom otpadnom vodom uočen je poremećaj u učinkovitosti uklanjanja nakon dodatka smjese antibiotika u sintetsku otpadnu vodu. Nakon 7 dana prilagodbe ponovo je uspostavljena visoka učinkovitost obrade u MBR-u Kubota dok je za uspostavu nitrifikacijske aktivnosti trebalo 11 dana.In this study synthetic wastewater was treated with activated sludge in membrane bioreactors Zenon and Kubota with submerged membranes. Wastewater was treated in MBR Zenon during 43 days and in MBR Kubota during 17 days. Synthetic water for MBR Zenon was based on glucose and ammonium-chloride for 19 days after which disorder in work and dying of bacteria in activated sludge was observed. During the treatment with complete wastewater good efficiency was establish again. Incomplete synthetic water caused decreased of denitrification disability bacteria in activated sludge. During the process in MBR Kubota with activated sludge adapted on synthetic water disorder was establish when mixture of antibiotic was applied. High efficiency was established again after 7 days of adaptation in MBR Kubota and for process nitrification 11 days was necessary