Modelling and Optimization of Processes for Removal of
Dissolved Heavy-Metal Compounds from Drinking Water
by Microbiological Methods

G. A. Dubinina^a, A. Yu. Sorokina^a, A. E. Mysyakin^b, M. Yu. Grabovich^c,
A. T. Eprintsev^c, and V. Yu. Bukreeva^c

^a Institute of Microbiology, RAS, prosp. 60-letiya Oktyabrya 7/2, Moscow, 117312 Russia

E-mail: gdubinina@mail.ru

^b Russian State Medical University, ul. Ostrovityanova 1, Moscow, 117997 Russia

^c Voronezh State University, Universitetskaya ploshchad' 1, Voronezh, 394007 Russia

Received March 2, 2011

Abstract—The results of laboratory modelling of microbiological removal of soluble compounds of Fe, Mn,
and other heavy metals (Al, Cr, Zn, Co, Cu, Pb, Cd) with the use of a laboratory bioreactor. The results have
shown that the main method of optimization of conditions facilitating the removal of dissolved metal com-
pounds from drinking water consisted in creating and maintaining an oxygen aeration regime favorable for bac-
terial oxidation processes and, which is especially important, in preventing stagnancy in the sand filter of biore-
actor during its shutoff. The latter was accompanied by an acceleration of bacterial reduction processes of pre-
cipitated heavy metals, resulting in their dissolution, hence secondary water pollution.

Keywords: Drinking water supply, bioreactor for removing metals from drinking water, iron- and manganese-
oxidizing and reducing bacteria, sorption of heavy metals, optimization of bioreactor operation regime

DOI: 10.1134/S0097807812030037

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