header

Extended activated sludge model no.1 with floc and biofilm diffusion for organic and nutrient removal /

Ahmed Mahmoud Mohamed Almadany

Extended activated sludge model no.1 with floc and biofilm diffusion for organic and nutrient removal / المتضمن معدلات الانتشار فى الكتلة الحوة لإزالة المواد العضوية(ASM1)نموذج الحمأة المنشطة المطور Ahmed Mahmoud Mohamed Almadany ; Supervised Khalid Zaher Abdallah , Mostafa Mohamed Elseddik - Cairo : Ahmed Mahmoud Mohamed Almadany , 2020 - 141 P . : charts , facsmilies ; 30cm

Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Civil Engineering

This thesis presents a modified mathematical model for substrate degradation and nutrient removal by aerobic microorganisms. The modified model is based on Activated Sludge Model No.1 (ASM1) for bacterial growth incorporated with substrate diffusion into flocs and biofilms. Monod kinetics are modified to consider the proton translocation theory for substrate dissociation in ASM1. Microbial growth rate coupled with mass transport rate was studied for heterotrophs and autotrophs in bulk solution and boundary layer of biofilm to reveal the extra degree of freedom of this dynamic model. Moreover, the sensitivity analysis of modified model was discussed at steady state using Newton Raphson technique



Biofilm model Modified ASM1 Monod kinetics