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Design and Construction of Aerobic Granulation Reactor in Order to Study the Effect of Cationic Polymer on Granular Formation

Jalali Varnamkhasti, Sajjad | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44038 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Shaygan Salek, Jalaloddin
  7. Abstract:
  8. Despite many advantages of granular sludge in anaerobic reactors (e.g. UASB), over the past few years research attention had turned towards developing aerobic granular sludge. Although much research is carried out on the formation of aerobic granules, less work is reported on how to enhance granules characteristics such as increasing in granule size, concentration, durability and stability. The aims of this study are to investigate the effects of cationic polymer on granule formation and the way to improve granule characteristics. For this purpose two SBR reactors (0.15 m diameter and 1.8 m height, R1 and R2) were used by feeding synthetic wastewater (diluted molasses, COD ranging from 1400 to 1600 mg/l). The cationic polymer with concentration 2 ppm was added to R1 while no cationic polymer added to R2. Mixed Liquor Suspended Solid (MLSS) concentration, Sludge Volume Index in 15 minutes (SVI15), Excreta Cellular Polymer (ECP) concentration and Specific Oxygen Uptake Rate (SOUR) were measured at different time intervals for both reactors. The results showed 50% increase of MLSS concentration, 20% increase of both ECP concentration and SOUR and 50% reduction in SVI15 in R1 compared to R2 with no addition of cationic polymer
  9. Keywords:
  10. Hybrid Reactor ; Sequencing Batch Reactor (SBR) ; Aerobic Granule ; Cationic Polymer

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