Removal of THMP by nanofiltration: Effects of interference parameters

C. Visvanathan*, Bowo Djoko Marsono, Biswadeep Basu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

An experimental investigation is conducted to evaluate the effects of interference parameters on the performance of nanofiltration for removal of trihalomethane precursors (THMPs). The influence of operating pressure, feed THMPs concentration, pH, presence of other ions (Ca2+ and Mg2+), and suspended solids on nanofiltration performance are determined. The effect of membrane precompaction is studied as well. Membrane performance for reversible and irreversible compaction is compared. Pretreated surface water from a pond is used as the feed water in the study to simulate the practical conditions in water treatment industries. Experimental results show that precompacted membrane has a higher rejection capacity. Higher pressure, feed THMP concentration, and suspended solids increase rejection. However, overall flux variation due to these parameters is found to be negligible. On the other hand presence of divalent ions reduce the rejection capacity. Generally rejection is found to be greater than 90% for a precompacted membrane, which turned out to be well suited for industrial scale application of nanofiltration for removal of THMPs.

Original languageEnglish
Pages (from-to)3527-3538
Number of pages12
JournalWater Research
Volume32
Issue number12
DOIs
Publication statusPublished - Dec 1998
Externally publishedYes

Keywords

  • Fulvic acid
  • Humic acid
  • Membrane compaction
  • Nanofiltration
  • Total organic carbon
  • Trihalomethane precursors
  • UV260

Fingerprint

Dive into the research topics of 'Removal of THMP by nanofiltration: Effects of interference parameters'. Together they form a unique fingerprint.

Cite this