Kinetic evaluation and process performance of a pilot GAC-SBBR system treating recycled paper industry wastewater

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Recycled paper industry wastewater generates potentially persistent and toxic pollutants which can affect the ecological balance and cause aesthetic concerns. In this study, the biodegradability of recycled paper mill wastewater by a granular activated carbonsequencing batch biofilm reactor (GAC-SBBR) pilot plant system during a period of 53 days was evaluated while on-line monitoring was used to observe the influence of parameter changes during the treatment process. The effect of nitrogen (N) and phosphorus (P) addition on removal of chemical oxygen demand (COD) in four phases was investigated. The COD:N:P ratio in the nutrient medium was considered as an independent variable at a fixed value hydraulic retention time (HRT) of 24 hours. The study demonstrated that the process was unstable during the initial phase and started to stabilise during the last phase when a COD:N:P ratio of about 100:5:1 was achieved. Degradation of COD was seriously affected by variation of COD:N:P ratios, resulting in the highest removal efficiency of COD at COD:N:P ratio of 100:5:1 (80.1 %) and a minimum degradation at COD:N:P ratio of 1000:7:0.2 (33.8 %). Using the Monod model, the kinetic parameters (μm, Ks, Y and Kd) were determined as 0.1007 mg MLSS/mg COD.day, 65.917 mg COD/L, 0.5199 mg MLSS/mg COD and 0.0048 mg MLSS/mg COD.day, respectively. These findings can be used to improve the performance of the pilot GAC-SBBR system.

Original languageEnglish
Pages (from-to)829-839
Number of pages11
JournalEnvironmental Engineering and Management Journal
Volume11
Issue number4
Publication statusPublished - Apr 2012

Fingerprint

Chemical oxygen demand
Biofilms
chemical oxygen demand
biofilm
Wastewater
wastewater
kinetics
Kinetics
Industry
evaluation
reactor
recycled paper
paper industry
Degradation
degradation
Biodegradability
Pilot plants
esthetics
Kinetic parameters
Nutrients

Keywords

  • COD:N:P ratios
  • Kinetic evaluation
  • Monod model
  • Pilot GAC-SBBR
  • Recycled paper industry

ASJC Scopus subject areas

  • Environmental Engineering
  • Management, Monitoring, Policy and Law
  • Pollution

Cite this

Kinetic evaluation and process performance of a pilot GAC-SBBR system treating recycled paper industry wastewater. / Muhamad, Mohd Hafizuddin; Sheikh Abdullah, Siti Rozaimah; Mohamad, Abu Bakar; Rahman, Rakmi Abdul; Kadhum, Abdul Amir H.

In: Environmental Engineering and Management Journal, Vol. 11, No. 4, 04.2012, p. 829-839.

Research output: Contribution to journalArticle

Muhamad, Mohd Hafizuddin ; Sheikh Abdullah, Siti Rozaimah ; Mohamad, Abu Bakar ; Rahman, Rakmi Abdul ; Kadhum, Abdul Amir H. / Kinetic evaluation and process performance of a pilot GAC-SBBR system treating recycled paper industry wastewater. In: Environmental Engineering and Management Journal. 2012 ; Vol. 11, No. 4. pp. 829-839.
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