Determination and occurrence of organic micropollutants in reverse osmosis treatment for advanced water reuse

Abstract

The growing demand on water resources has increased the interest in wastewater reclamation for multiple end-use applications such as indirect and direct potable reuse. In these applications, the removal of organic micropollutants is of a greater concern than in conventional wastewater treatment. This article presents a collection of data of trace organic micropollutants in an urban wastewater treatment plant (WWTP) in North East Spain using reverse osmosis (RO) membrane treatment. The RO rejection values of the organic molecules studied with a wide range of solute size and hydrophobicity were determined. Several chromatographic methods monitoring different endocrine disrupting chemicals (EDCs), pharmaceuticals and personal care products (PPCPs) were used. Results indicated that secondary effluents from this Spanish WWTP contained most of the studied organic compounds indicating incomplete removal of organics in the conventional treatment of the plant. However, the rejection of most micropollutants was high for all three RO membrane types (low energy, high rejection, fouling resistant) tested. It was observed that some selected micropollutants were less efficiently removed (e.g. the small and polar and the more hydrophobic) and the molecular weight and membrane material influenced removal efficiencies.

Occurrence of emerging and priority pollutants in municipal reverse osmosis concentrates

“…However, the types of emerging and priority pollutants frequently appeared and at their concentrations in the municipal ROC has only been reported in a few studies. 36,37 Test results indicated that many emerging and priority pollutants that belong to PAHs, PAEs, PPCPs, herbicides, and ame retardants appeared in the ROC. Regarding the PAHs, naphthalene, acenaphthene, uorene, phenanthrene and anthracene were detected at relatively low concentrations of 0.03-0.23 mg L À1 .…”

Fate of Environmental Pollutants

“…In that line, Sun et al (2012) Authors concluded that ozonation is a feasible polishing process, subsequent to biological treatment, for removal of residual antibiotics from swine wastewater, and the primary reaction mechanism was direct oxidation via ozone rather than indirect oxidation via hydroxyl radicals. Gomez et al (2012) The study by Kosjek et al (2012) processes. Authors found that main micropollutants of concerns were cadmium, di-2-ethylhexyl phthalate (DEHP), diuron, alkylphenols, and chloroform while the emerging substances of particular concern were by-products, organic chemicals (e.g.…”

Comparing Contaminant Removal Costs for Aquifer Recharge with Wastewater with Water Supply Benefits

“…It has been demonstrated that some micropollutants such as atrazine, can be effectively removed by RO and, to a lesser extent, by nanofiltration (NF) membranes (Baier et al, 1987;Duranceau and Taylor, 1992;Ventresque et al, 1997;van der Bruggen et al, 1998;Crozes and Seacord, 2001). More recently, Comerton et al (2007), van der Bruggen et al (2002), Kiso et al (2001), Nghiem, et al (2004, Mulford et al (1999), Kimura et al (2004), Schafer et al (2003), Yangali-Quintanilla et al (2010a, b), Gomez et al (2012), and Ozaki and Li (2002) are among those who have bench tested RO and/or NF effectiveness.…”

“…(, b), Gomez et al . (), and Ozaki and Li () are among those who have bench tested RO and/or NF effectiveness.…”