INFLUENCE OF BIOLOGICAL FILTRATION MEDIA ON THE AMMONIUM REMOVAL RATES FROM GROUNDWATER SOURCES

Ion-Viorel Patroescu, Gheorghita Jinescu, Cristiana Cosma, Laurentiu-Razvan Dinu, Costel Bumbac
2015 Bull., Series B   unpublished
The paper investigates the influence of the filter media (Leca, Kaldnes) and hydrodynamic configuration (Kaldnes, aeration within the filter media; Kaldnes, pre-aeration of influent and effluent recycle) on the removal performances of ammonium nitrogen (NH 4 +-N) from groundwater sources in biological aerated filters. The results showed that the volumetric removal rates of NH 4 +-N were higher for the Leca media (97-261 kg N/m 3 /day) than for Kaldnes media (30-135 kg N/m 3 /day), and also for
more » ... he biofilter with pre-aeration (30-135 kg N/m 3 /day) than for the aeration within the filter media (13-66 kg N/m 3 / day).
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