tailieunhanh - Bài giảng công nghệ môi trường_26

Tham khảo bài viết 'bài giảng công nghệ môi trường_26', khoa học tự nhiên, công nghệ môi trường phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | I VAN LANG UNIVERSITY ARTMENT OF ENVIRONMENTAL TECHNOLOGY AND MANAGEMENT SPECIALIZED ENGLISH - SEMESTER 5 Chapter 26 FUNDAMENTALS OF BIOLOGICAL WASTEWATER TREATMENT Modeling suspended growth treatment process Dr. Tran Thi My Dieu PURPOSES Purpose of modeling suspended growth COMPLETE-MIX REACTOR WITHOUT RECYCLE treatment processes To assess treatability of wastewater To obtain model kinetic coefficient COMPLETE-MIX REACTOR WITHOUT RECYCLE 1 COMPLETE-MIX REACTOR WITHOUT RECYCLE COMPLETE-MIX REACTOR WITHOUT RECYCLE Biomass mass balance Biomass mass balance Rate of Rate of flow of Rate of flow of Net growth of accumulation of microorganism - microorganism microorganism microorganism into the system out of the within the within the system boundary system boundary boundary boundary Accumulation inflow - outflow net growth J Symbolic representation dX d-V QX 0 - QX Vrg Accumulation inflow - outflow net growth dX dt rate of change of biomass concentration in reactor measured as g VSS V reactor volume m3 Q influent flow-rate m3 d Xo concentration of biomass in influent g VSS m3 X concentration of biomass in the reactor g VSS m3 nomass DENTEMA COMPLETE-MIX REACTOR WITHOUT RECYCLE Biomass mass balance COMPLETE-MIX REACTOR WITHOUT RECYCLE Biomass mass balance dX dx V QX0 - QX Vrg At steady state dX dt 0 0 0 - QX V X Assumed Xo 0 Ấ y x. - kdX I KS S X S COMPLETE-MIX REACTOR WITHOUT RECYCLE COMPLETE-MIX REACTOR WITHOUT RECYCLE Biomass mass balance Substrate mass balance 1 - - kd e Ks S d S Accumulation inflow - outflow - utilization J Symbolic representation S Ks 1 kde Ks 1 kde eipm - kd - 1 e xk - kd - 1 X V QS 0-QS - Vrsu dt VAN LANG UNIVERSITY DENTEMA 2 COMPLETE-MIX REACTOR WITHOUT RECYCLE Substrate mass balance COMPLETE-MIX REACTOR WITHOUT RECYCLE Substrate mass balance S X V _ QS 0-QS - Vr dt 0 _ QSo - QS - V kSX I K S X. s At steady state dS dt 0 0 _ QSo - QS - VI kSX Ks S Q So - S _ V kSX Ì I Ks S VAN LANG UNIVERSITY DENTEMA VAN LANG UNIVERSITY DENTEMA .

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