Stefanescu, MihaiMihaiStefanescuCosma, CristianaCristianaCosmaCristea, IonutIonutCristeaNitoi, InesInesNitoiBumbac, CostelCostelBumbacBadescu, ValeriuValeriuBadescu2017-03-302017-03-3020151311-5065http://hdl.handle.net/123456789/613Journal of Environmental Protection and Ecology Volume 16 Issue 4This paper presents the application of treated industrial waste from alumina fabrication in the field of drinking water treatment as coagulant-flocculant reagent. Experimental tests emphasized the efficiency of recovered and purified sodium aluminate for surface water treatment. Three different flocculants (sodium aluminate, classic flocculant, polyaluminum chloride – PAC) at four aluminum doses were tested. Turbidity, total organic carbon (TOC), iron, manganese and sodium indicators were monitored. Similar removal efficiencies have been calculated for turbidity (>99%), iron (>99%), manganese (~80%), aluminum (94–98%) and 58 and 47% for TOC in case of recovered sodium aluminate and PAC, respectively. The application of recovered flocculant proved its efficiency for coagulation-flocculation treatment phase, which mean that could be used instead classical flocculant without any secondary pollution effects. Recovered sodium aluminate is a good flocculant for drinking water treatment with many other applications in the field of wastewater treatment.en-USDrinking waterSodium aluminateFlocculantTurbidityArticle