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Performance of BAC process for treatment of micro-polluted water

  • Chen Wang*
  • , Fang Ma
  • , Dan Shan
  • , Ji Xian Yang
  • , Chein Chi Chang
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • University of Maryland, Baltimore County

Research output: Contribution to journalArticlepeer-review

Abstract

Biological activated carbon (BAC) has been developed on the granular activated carbon by immobilization of selected and acclimated species of bacteria to treat the micro-polluted water. The BAC removal efficiencies for nitrobenzene, permanganate index, turbidity and ammonia were investigated. Effects of shock loading and SEM (Scanning Electron Microscope) observation on BAC were studied. Backwashing and its intensity of BAC were also discussed. The results showed that BAC took short time to start up and recover to the normal condition after shock loading. The shock loading studies showed that the removal efficiency of BAC was not completely inhibited even at high concentration of nitrobenzene. Backwashing performed once every 10-20 d, or an average of 15 d. Backwashing intensity was 12-14 L/(s·m2) with air and 3-4 L/(s·m2) with water.

Original languageEnglish
Pages (from-to)194-197
Number of pages4
JournalJournal of Harbin Institute of Technology (New Series)
Volume15
Issue number2
StatePublished - Apr 2008

Keywords

  • Biological activated carbon
  • Micro-polluted water
  • Nitrobenzene

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