Performance evaluation of a granular activated carbon-sequencing batch biofilm reactor pilot plant system used in treating real wastewater from recycled paper industry

Mohd Hafizuddin Muhamad, Siti Rozaimah Sheikh Abdullah, Abu Bakar Mohamad, Rakmi Abdul Rahman, Abdul Amir H. Kadhum

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A pilot scale granular activated carbon-sequencing batch biofilm reactor with a capacity of 2.2m3 was operated for over three months to evaluate its performance treating real recycled paper industry wastewater under different operational conditions. In this study, dissolved air floatation (DAF) and clarifier effluents were used as influent sources of the pilot plant. During the course of the study, the reactor was able to biodegrade the contaminants in the incoming recycled paper mill wastewater in terms of chemical oxygen demand (COD), adsorbable organic halides (AOX; specifically 2,4-dichlorophenol (2,4-DCP)) and ammoniacal nitrogen (NH3-N) removal efficiencies at varying hydraulic retention times (HRTs) of 1-3days, aeration rates (ARs) of 2.1-3.4m3/min and influent feed concentration of 40-950mg COD/l. Percentages of COD, 2,4-DCP and NH3-N removals increased with increasing HRT, resulting in more than 90% COD, 2,4-DCP and NH3-N removals at HRT values above two days. Degradation of COD, 2,4-DCP and NH 3-N were seriously affected by variation of ARs, which resulted in significant decrease of COD, 2,4-DCP and NH3-N removals by decreasing ARs from 3.4m3/min to 2.1m3/min, varying in the ranges of 24-80%, 6-96% and 5-42%, respectively. In comparison to the clarifier effluent, the treatment performance of DAF effluent, containing high COD concentration, resulted in a higher COD removal of 82%. The use of diluted DAF effluent did not improve significantly the COD removal. Higher NH3-N removal efficiency of almost 100% was observed during operation after maintenance shutdown compared to normal operation, even at the same HRT of one day due to the higher dissolved oxygen concentrations (1-7mg/l), while no significant difference in COD removal efficiency was observed.

Original languageEnglish
Pages (from-to)915-926
Number of pages12
JournalEnvironmental Technology
Volume33
Issue number8
DOIs
Publication statusPublished - 1 Apr 2012

Fingerprint

Chemical oxygen demand
Biofilms
Pilot plants
chemical oxygen demand
Activated carbon
activated carbon
biofilm
Wastewater
wastewater
Industry
Effluents
Hydraulics
effluent
aeration
hydraulics
air
Air
paper industry
evaluation
reactor

Keywords

  • 2,4-dichlorophenol (2,4-DCP)
  • adsorbable organic halides (AOX)
  • pilot granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR)
  • recycled paper wastewater
  • wastewater treatment

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Water Science and Technology

Cite this

Performance evaluation of a granular activated carbon-sequencing batch biofilm reactor pilot plant system used in treating real wastewater from recycled paper industry. / Muhamad, Mohd Hafizuddin; Sheikh Abdullah, Siti Rozaimah; Mohamad, Abu Bakar; Abdul Rahman, Rakmi; Kadhum, Abdul Amir H.

In: Environmental Technology, Vol. 33, No. 8, 01.04.2012, p. 915-926.

Research output: Contribution to journalArticle

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