High nitrate removal from synthetic wastewater with the mixed bacterial culture (CROSBI ID 113871)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Foglar, Lucija ; Briški, Felicita ; Sipos, Laszlo ; Vuković, Marija
engleski
High nitrate removal from synthetic wastewater with the mixed bacterial culture
The applicability of the mixed bacterial culture, originated from two-stage anaerobic-aerobic industrial yeasts production wastewater treatment plant for high rate denitrification processes was investigated. After acclimation to nitrate, the dominant strains were Pseudomonas and Paracoccus sp. Complete denitrification with low accumulation of nitrite-N (0.1 mg/l) was found in synthetic wastewater, obeying a zero-order reaction with respect to nitrate and a first-order reaction with respect to biomass concentration. Denitrification was then monitored in the continuous-flow stirred reactor at different hydraulic retention time, HRT (62-28h) in order to achieve the optimal HRT. Nitrate was completely removed during following 45days, at 25degreesC with HRT, which we reduced from 62 to 28h. Yet still, at 28h HRT, high average specific denitrification rate of 142 mg NO3--N/g VSS h was obtained.
continuous flow denitrifying reactor ; denitrification ; kinetic model ; mixed bacterial culture ; nitrite accumulation
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Podaci o izdanju
96 (8)
2005.
879-888
objavljeno
0960-8524
1873-2976
10.1016/j.biortech.2004.09.001
Povezanost rada
Biotehnologija, Kemijsko inženjerstvo