TECHNOLOGICAL SOLUTIONS OF USING SLUDGE FROM GROUNDWATER DEMANGANATION PROCESSES IN BUILDING MATERIALS

Abstract

The development of solutions for the disposal of waste from water treatment is important from the point of view of reducing its accumulation. In this paper, manganese hydroxide from water demanganization is considered as a component of the cement mixture, which accelerates its hardening. A rational dose of manganese hydroxide sludge for the use in building mixtures is 0.5 - 4.0%. The research results showed that the desorption of manganese from cement in an aqueous medium is 0.003 - 0.035 mg/dm³ in 1 day and 0.005 - 0.041 mg/dm³ in 30 days. A technological scheme for the preparation of drinking water from an underground source containing an increased content of manganese and iron ions with subsequent processing of the formed sediments is proposed.