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Reclamation of Cooling Towers’ Blow Down In Order to Reuse Of Water

Kianpoor, Mahsa | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46483 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Borghei, Mehdi
  7. Abstract:
  8. In recent years,because of increasing problems that result from water shortage ,using of wastewater treated by high quality and entering them to water cycle is considered more than past.Large amount of waste waterare produced through cooling towers in industries per a day .Therefore ,cooling tower’s blow down is a most important source for reclamation and reuse of water .The purpose of this project was investigation ofefficiency of submerged aerated filter for treating low organic simulated blowdown water as a feed . The experimental unit consisted of 8/5 L filled with 70 percent of propylene media . After obtaining steady –state condition ,The SAF reactor was tested under differenthydraulic retention time and concentration of wastewater.Hydraulic retention time and concentration were decreased from 4 to 2 hour and 100 to 60 mg/lit respectively.As a result of study in 9 periods ,COD removal was calculated in rage of 72.1 to 49.16 %.Then,in order to get familiar with system and prediction of same system in different conditions ,some kinetic model like First order model,Second Order model or Grau and Stover-Kincannon model were investigated .the result of study conducted showed that Grua model was found to be the most appropriate model for this reactor
  9. Keywords:
  10. Biological Treatment ; Kinetic Model ; Water Reusing ; Submerged Aerated Filter (SAF) ; Aerobic Biological Treatment ; Low Organic Loading

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