D2.1 - EU Project Neptune

NEPTUNE · Contract-No. 036845 Deliverable 2.1
community is not necessarily negative since specialized bacteria can occur to remove the
recalcitrant micropollutants, a selective pressure by using high manganese concentrations in
the reactor can be applied to ensure that the bacteria population consists mainly of
manganese oxidizers. High concentrations of manganese and iron are usually present in
sandfilters for groundwater treatment. Addition of manganese-oxidizing bacteria could
enhance the removal of residual levels of acidic pharmaceuticals present in the groundwater.
Yet, the influence of iron species on the chemical oxidation with BioMnOx and the low HRT
during rapid sand filtration needs to be investigated. Another application could be slow
sandfiltration enriched with BioMnOx as a final polishing step for the wastewater treatment
before discharge to receiving waters, since the HRT used in those systems are usually in the
order of a few hours.
20