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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 41176 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Borgheei, Mahdi; Vossoughi, Manoochehr
- Abstract:
- One of the most significant consequents of industrial world is environmental pollutions which displays its mortal effects in all aspects of human life including water, atmosphere and soil. After different applications of water, variable substances like organic and mineral components, toxics, heavy metal, etc is added to the water and wastewater. One of these organic components which appear in runoff and industrial wastes specially refinery companies’ is Ethylene Glycol (EG). It is used in Poly ethylene Glycol, Poly Viniles and Resin product industries, etc. In this research the effect of EG on COD removal and performance of an Anaerobic Baffled Reactor during treating Ethylene Glycol effluent is investigated. For this purpose, the experiments were accomplished in different amount of organic loading rates. The utilized pilot is made up of glass with effective volume of 40 lit that contains three compartments. . The effluent used, has been prepared in the laboratory and was the combination of Glucose, as carbon resource, Potassium Ortho Phosphate, Amuniom Coloride. Factors such as COD, pH, VSS, Volatile Fatty acid, Alkalinity, Total Suspended Solids and the Temperature of the reactor has been measured. COD removal of ABR reactor in the presence of different concentrations of EG, effect of Hydraulic Retention Time (HRT) on COD removal, performance of the reactor for EG removal, effect of organic shock on the reactor and the inhabitation concentration of EG for anaerobic microorganisms has been studied. Results indicated that for all concentrations 50, 100, 150, 200, 500 and 1000 ppm of EG while the HRT was set on 24 hours (and the organic loading rate was between 1.09 to 2.25 Kg COD/m3.d) COD removal of the system was measured to be higher than 80%. Moreover, by changing the HRT for different concentrations (organic loading rates varies from 1.3 to 5.4 Kg COD/m3.d), the highest efficiency was measured for the appearance of 200 ppm of EG when HRT was 24 hours. So, optimized HRT was reported as 24 h. EG removal was studied for the effluent concentration of 500 and 1000 ppm in optimized HRT and the amount was 75% and 74%, respectively. Furthermore, after implementation of the organic shock by increasing the EG concentration from 200 ppm to 3000 ppm (3.95 Kg COD/m3.d), the reactor performance was brought back to the normal and stable condition just after four days
- Keywords:
- Biological Treatment ; Anaerobic Treatment ; Ethylen Glycol ; Anaerobic Baffled Reactor (ABR)
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