Naslov
Removal of emerging contaminants from municipal wastewater with integrated membrane system, MBR-RO

Autori
Dolar, Davor ; Gros, Meritxell ; Rodriguez-Mozaz, Sara ; Moreno, Jordi ; Comas Joaquim ; Rodriguez- Roda, Ignasi ; Barcelo, Damia

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
12th International conference on environmental science & technology CEST2011 / Lekkas T.D. - Rodos, 2011, 440-447

ISBN
978-960-7475-49-7

Skup
12th International conference on environmental science and technology

Mjesto i datum
Rodos, Grčka, 08.09.2011. - 10.09.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Emerging contaminants; Pharmaceuticals; Membrane bioreactors; Reverse osmosis; Removal from municipal wastewater

Sažetak
The presence of emerging contaminants in the aquatic environment and their potential effect on living organisms has become an issue of growing concern. Among emerging contaminants, pharmaceuticals may enter the aquatic environment due to their high consumption and their incomplete removal during conventional municipal wastewater treatment plants (WWTPs). Therefore, new advance water treatments have to be developed to effectively remove these contaminants. In this work, a novel treatment system is proposed, which is based on the integration of a membrane bioreactor (MBR) with reverse osmosis (RO) process. The main goal of this study was the assessment of the removal efficiency of pharmaceuticals of a costal municipal WWTP (Castell-Platja d'Aro, in Catalonia, NE of Spain) using an integrated membrane system (MBR-RO) in a pilot-scale. The integrated MBR-RO system was treating 4.3 m3 day-1 of real raw municipal wastewater from a primary settler. The MBR system was used with University of Cape Town (UCT) configuration (i.e. anaerobic, anoxic and aerobic tanks) and membrane compartment for biological nutrient removal using LF-10 Kubota ultrafiltration membranes. The MBR provides feed water for the RO system (Ropur membranes TR70- 4021-HF module). Twenty multiple-class pharmaceuticals (including psychiatric drugs, macrolide antibiotics, β- blockers, sulfonamide and fluoroquinolone antibiotics, histamine H2 receptor antagonists, anti-inflammatories, nitroimidazole, β-agonist and antiplatelet agent) were measured in real influent with the lowest average concentration for β- agonist (0.028 μg L-1) to the highest for macrolide antibiotics (3.77 μg L-1). Although some concentrations were in relatively high concentrations (even up to 5.64 μg L-1 in the case of azithromycin). The combination of MBR and RO treatment showed excellent overall removal of target emerging contaminants with removal rates above 90% for all of them. For some compounds MBR provided high removal efficiency (up to 90%). In the case of compounds at very low concentrations, under the limit of quantification (LOQ) after MBR, they were almost completely removed with RO filtration.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

POVEZANOST RADA