Naslov
Treatment of landfill leachate by membrane processes of nanofiltration and reverse osmosis

Autori
Košutić, Krešimir ; Dolar, Davor ; Strmecky, Tea

Izvornik
Desalination and water treatment (1944-3994) 55 (2015), 10; 2680-2689

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Landfill leachate; coagulation; nanofiltration; reverse osmosis; MCLs

Sažetak
Landfill leachate from Jakuševec, Zagreb, Croatia was treated by membrane processes of nanofiltration (NF) and reverse osmosis (RO). Different types of membranes were selected to obtain the parameters of leachate contaminants below maximum concentration levels (MCLs), defined by the Croatian law and EU directive. As a pretreatment of landfill leachate, coagulation and filtration were used. Parameters of total carbon, total organic carbon (TOC), inorganic carbon, chemical oxygen demand (COD), pH, turbidity, conductivity, concentration of different inorganic ions, heavy metals, etc., were analyzed in all steps. The landfill leachate was relatively low loaded with organic substances and ammonia ; COD, TOC, and NH4+-N of real sample were 1, 720.0 mgO L −1, 1, 260.5 mgC L−1, and 1, 147.6 mg20 L−1, respectively. Their concentrations decreased after coagulation for 27.9, 58.6, and 7.9%, respectively. RO/NF membranes (NF270, NF90, and XLE) additionally decreased COD and TOC for >94.6% and >92.5%, respectively. Ammonium ions decreased in the range of 37.1% (NF270)–88.9% (XLE).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

Napomena
Rad je sufinanciran potporom Sveučilišta u Zagrebu (5.3.1.13) pod naslovom "Uklanjanje organskih zagađivala iz vode naprednim membranskim procesima reverzne osmoze i nanofiltracije."

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