Sustainable Reuse of Groundwater Treatment Iron Sludge for Organic Matter Removal from River Neris Water

Ramunė Albrektienė, Karolis Karaliūnas and Kristina Bazienė
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Ramunė Albrektienė: Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Sauletekio ave. 11, 10223 Vilnius, Lithuania
Karolis Karaliūnas: “Infes technologijos”, UAB, Verkių str. 34b, 08223 Vilnius, Lithuania
Kristina Bazienė: Department of Mechanics and Materials Engineering, Vilnius Gediminas Technical University, Sauletekio ave. 11, 10223 Vilnius, Lithuania

Sustainability, 2019, vol. 11, issue 3, 1-15

Abstract: The most important advances in sustainability in the water industry are focused on the reuse of water treatment sludge. The Antaviliai Water Supply Plant, which is located in Lithuania, treats groundwater by removing iron and manganese from it. This technology does not produce water waste, as the iron sludge is used for recycling. In this study, iron sludge received from groundwater treatment is used to remove natural organic matter from river Neris water, which can be used as drinking water. Twelve doses (from 1 to 6 g/L and from 0.1 g/L to 0.9 g/L) of iron sludge powder, with acid and without it, were used. The most effective removal of organic compounds (55.51%) and reduction in water colour (53.12%) were observed when 0.3 g of iron sludge powder and 8 ml of 0.95% H 2 SO 4 solution were added to the tested water. It was found that the use of a conventional coagulant (Al 2 (SO 4 ) 3 *17H 2 O), with and without iron sludge powder, decreased the concentration of organic compounds and water colour from 2.8 to 28.2% compared with the use of a pure coagulant (Al 2 (SO 4 ) 3 *17H 2 O) alone..

Keywords: water treatment iron sludge; drinking water; organic matter; water colour (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
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