Aerobic sludge granulation at high temperatures for domestic wastewater treatment

Ab Halim MH 1 , Nor Anuar A 2 , Azmi SI 3 , Jamal NS 3 , Wahab NA 4 , Ujang Z 5 Show all authors , Shraim A 6 , Bob MM 6

Affiliations 

  • 1 Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; Institute of Environment and Water Resource Management, WATER Research Alliance, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia. Electronic address: hakim_90@rocketmail.com
  • 2 Institute of Environment and Water Resource Management, WATER Research Alliance, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; Centre of Engineering Education, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia. Electronic address: aznah@utm.my
  • 3 Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
  • 4 Department of Control and Mechatronic Engineering, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
  • 5 Institute of Environment and Water Resource Management, WATER Research Alliance, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
  • 6 Department of Civil Engineering, College of Engineering, University of Taibah, 30001 Universities Road, Al Madinah Al Monawarah, Saudi Arabia
Bioresour Technol, 2015 Jun;185:445-9.
PMID: 25851807 DOI: 10.1016/j.biortech.2015.03.024

Abstract

With inoculum sludge from a conventional activated sludge wastewater treatment plant, three sequencing batch reactors (SBRs) fed with synthetic wastewater were operated at different high temperatures (30, 40 and 50±1°C) to study the formation of aerobic granular sludge (AGS) for simultaneous organics and nutrients removal with a complete cycle time of 3h. The AGS were successfully cultivated with influent loading rate of 1.6CODg(Ld)(-1). The COD/N ratio of the influent wastewater was 8. The results revealed that granules developed at 50°C have the highest average diameter, (3.36mm) with 98.17%, 94.45% and 72.46% removal efficiency observed in the system for COD, ammonia and phosphate, respectively. This study also demonstrated the capabilities of AGS formation at high temperatures which is suitable to be applied for hot climate conditions.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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