Controlling Biofouling in Seawater Reverse Osmosis Membrane Systems
Controlling Biofouling in Seawater Reverse Osmosis Membrane Systems by Nirajan Dhakal
English | 16 Jan. 2018 | ISBN: 0815357184 | 224 Pages | PDF | 6.15 MB
English | 16 Jan. 2018 | ISBN: 0815357184 | 224 Pages | PDF | 6.15 MB
Seawater desalination is a rapidly growing coastal industry that is increasingly threatened by algal blooms. Depending on the severity of algal blooms, desalination systems may be forced to shut down because of clogging and/or poor feed water quality. To maintain stable operation and provide good feed water quality to seawater reverse osmosis (SWRO) systems, ultrafiltration (UF) pre-treatment is proposed.
This research focused on assessing the ability of UF and other pre-treatment technologies to reduce biofouling in SWRO systems. An improved method to measure bacterial regrowth potential (BRP) was developed and applied at laboratory, pilot and full scale to assess the ability of conventional UF (150 kDa) and tight UF (10 kDa) alone and in combination with a phosphate adsorbent to reduce regrowth potential and delay the onset of biofouling in SWRO.