Paplavomis apdorojamo filtro užpildo įtakos tyrimai šalinant geležį, amonį bei manganą

Abstract

Spontaneous formation of active layer in biological filters for removal of iron, manganese and ammonium from ground water usually takes a few months. Inoculation of the new filters with well-established filter material is a common start-up procedure. An operational approach for inoculation of new filters using backwash sludge, instead of filter material, is elaborated here. The sludge is obtained from an already wellestablished filters (Antaviliai water treatment plants) used for removal of iron, manganese and ammonium. The successful application of the described start-up procedure was demonstrated in two pilot sized plants treating ground water of different qualities at laboratory. In one of these experiments, the ground water contained increased concentrations of iron, manganese and ammonium, and in the other, only manganese concentration was increased.