Recycling of oleochemical wastewater for boiler feed water using reverse osmosis membranes - A case study

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Currently, awareness of water conservation has increased worldwide due to water scarcity. Wastewater recycling appears to be attractive for water conservation. This paper addresses a case study of oleochemical wastewater treatment using an advanced process that comprises ultrafiltration (UF) and reverse osmosis (RO) membranes. Prior to the membrane process, the oleochemical effluent was first treated using a biological treatment system that was installed by the factory owner. The quantity and quality of the permeate stream of the membrane system were then periodically monitored over 43. days. The results showed that the system functioned effectively in reducing the chemical oxygen demand (COD), hardness content and the amount of total dissolved solids (TDS). However, the system started to deteriorate after 15. days of operation. Membrane biofouling was suspected to have occurred in the RO membrane. Nevertheless, the fouling problem could be resolved by chemically cleaning the RO membrane using a sodium hydroxide (NaOH) solution every 3-5. days. Despite of the fact that data set for a longer period is needed to provide a more comprehensive study on the biofouling mechanism of membrane, this study somehow reflects a real-life problem of the application of RO membrane in the water recycling industry in Malaysia.

Original languageEnglish
Pages (from-to)178-186
Number of pages9
JournalDesalination
Volume271
Issue number1-3
DOIs
Publication statusPublished - 15 Apr 2011

Fingerprint

Osmosis membranes
Reverse osmosis
Boilers
Recycling
Wastewater
recycling
membrane
Membranes
Biofouling
wastewater
Water conservation
Water
Water recycling
water
Sodium Hydroxide
biofouling
Chemical oxygen demand
Ultrafiltration
Fouling
Wastewater treatment

Keywords

  • Biofouling
  • Boiler feed
  • Reverse osmosis
  • Ultrafiltration
  • Water recycling system

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Recycling of oleochemical wastewater for boiler feed water using reverse osmosis membranes - A case study. / Koo, Chai Hoon; Mohammad, Abdul Wahab; Suja`, Fatihah.

In: Desalination, Vol. 271, No. 1-3, 15.04.2011, p. 178-186.

Research output: Contribution to journalArticle

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