Abdelsalam Ahmed Mohamed Elawwad <br/><br/>
Effect of start-up and starvation conditions on the nitrification process in aerated submerged fixed bed biofilm reactors SFBBRs /  
 تأثير ظروف بدء تشغيل و توقف محطات معالجة الصرف الصحى علي عملية النترجة فى المرشحات البيولوجية المغمورة و المهواة ذات الوسط الثابت 
Abdelsalam Ahmed Mohamed Elawwad ; Supervised Hisham Abdelhalim , Heinz Koser , Maged Hamed 
 - Cairo :   Abdelsalam Ahmed Mohamed Elawwad ,   2012 
 - 122 P. in various pagings :   plans ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Civil Engineering 
<br/><br/> This study focuses on the improvement of the operation and understanding of the behavior of submerged fixed-bed biofilm reactors (SFBBRs) as a nitrification process. Two issues were studied in this thesis: the start-up and the starvation of nitrifying biofilms. To achieve the objectives of this thesis, acrated two-stages bench-scale SFBBRs were operated over one year at 20C 
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<br/><br/><label>Subjects--Index Terms: </label>Nitrification SFBBR Wastewater