Recovery of cooling tower blowdown water for reuse: The investigation of different types of pretreatment prior nanofiltration and reverse osmosis

Farahani M. H. D. A., Borghei S. M., Vatanpour Sargheın V.

JOURNAL OF WATER PROCESS ENGINEERING, vol.10, pp.188-199, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10
  • Publication Date: 2016
  • Doi Number: 10.1016/j.jwpe.2016.01.011
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.188-199
  • Keywords: Water reuse, Cooling tower blowdown, Nanofiltration, Reverse osmosis, Coagulation
  • Istanbul Technical University Affiliated: No


The suitability of two different pretreatment methods, i.e., coagulation-filtration and ultrafiltration (UF), and two final membrane treatment technologies, namely nanofiltration (NF) and reverse osmosis (RO), for desalination of a cooling tower blowdown (CTBD) was investigated. Particular attention was paid to ensuring that the best pretreatment method could enhance the permeate flux and lifespan of the NF and RO membranes and decrease the membranes' fouling characteristics. Furthermore, the difference of NF and RO performances in CTBD treatment was investigated.