Print Email Facebook Twitter Monitoring biofouling potential using ATP-based bacterial growth potential in SWRO pre-treatment of a full-scale plant Title Monitoring biofouling potential using ATP-based bacterial growth potential in SWRO pre-treatment of a full-scale plant Author Abushaban, Almotasembellah (TU Delft Sanitary Engineering; IHE Delft Institute for Water Education) Salinas-Rodriguez, Sergio G. (IHE Delft Institute for Water Education) Kapala, Moses (IHE Delft Institute for Water Education) Pastorelli, Delia (SUEZ RandD Center) Schippers, Jan C. (IHE Delft Institute for Water Education) Mondal, Subhanjan (Promega Corporation) Goueli, Said (Promega Corporation) Kennedy, M.D. (TU Delft Sanitary Engineering; IHE Delft Institute for Water Education) Date 2020 Abstract Several potential growth methods have been developed to monitor biological/organic fouling potential in seawater reverse osmosis (SWRO), but to date the correlation between these methods and biofouling of SWRO has not been demonstrated. In this research, the relation between a new adenosine triphosphate (ATP)-based bacterial growth potential (BGP) test of SWRO feed water and SWRO membrane performance is investigated. For this purpose, the pre-treatment of a full-scale SWRO plant including dissolved air flotation (DAF) and two stage dual media filtration (DMF) was monitored for 5 months using BGP, orthophosphate, organic fractions by liquid chromatography coupled with organic carbon detection (LC-OCD), silt density index (SDI), and modified fouling index (MFI). Results showed that particulate fouling potential was well controlled through the SWRO pre-treatment as the measured SDI and MFI in the SWRO feed water were below the recommended values. DAF in combination with coagulation (1–5 mg-Fe3+/L) consistently achieved 70% removal of orthophosphate, 50% removal of BGP, 25% removal of biopolymers, and 10% removal of humic substances. Higher BGP (100–950 µg-C/L) in the SWRO feed water corresponded to a higher normalized pressure drop in the SWRO, suggesting the applicability of using BGP as a biofouling indicator in SWRO systems. However, to validate this conclusion, more SWRO plants with different pre-treatment systems need to be monitored for longer periods of time. Subject Bacterial growth potentialBiofoulingDesalinationPre-treatmentSeawater reverse osmosis To reference this document use: http://resolver.tudelft.nl/uuid:dfea767b-fabc-48fb-a148-83215e8a7f36 DOI https://doi.org/10.3390/membranes10110360 ISSN 2077-0375 Source Membranes, 10 (11), 1-15 Part of collection Institutional Repository Document type journal article Rights © 2020 Almotasembellah Abushaban, Sergio G. Salinas-Rodriguez, Moses Kapala, Delia Pastorelli, Jan C. Schippers, Subhanjan Mondal, Said Goueli, M.D. Kennedy Files PDF membranes_10_00360_v3.pdf 1.58 MB Close viewer /islandora/object/uuid:dfea767b-fabc-48fb-a148-83215e8a7f36/datastream/OBJ/view