Consider an activated sludge WWTP (wastewater treatment plant). Influent comes in at 28 million L/day, and effluent flows out at 26 million L/day. The recycle flow rate is 30 million L/day. The aeration basin has a volume of 9.0 million liters. The influent and effluent BODS are 450 mg/L and 30mg/L, respectively. The biomass (MLVSS, mixed liquor volatile suspended solids) concentrations in the waste sludge and clarifier effluent are 6,205mg/L and 30mg/L, respectively. Calculate: i. The total biomass discharge rate, kg/day ii. The observed yield iii. The biomass concentration in the aeration tank, mg/L iv. The recycle ratio (Only for this particular question, assume the recycle flow rate as 20) v. The SRT (solids residence time)
Consider an activated sludge WWTP (wastewater treatment plant). Influent comes in at 28 million L/day, and effluent flows out at 26 million L/day. The recycle flow rate is 30 million L/day. The aeration basin has a volume of 9.0 million liters. The influent and effluent BODS are 450 mg/L and 30mg/L, respectively. The biomass (MLVSS, mixed liquor volatile suspended solids) concentrations in the waste sludge and clarifier effluent are 6,205mg/L and 30mg/L, respectively. Calculate: i. The total biomass discharge rate, kg/day ii. The observed yield iii. The biomass concentration in the aeration tank, mg/L iv. The recycle ratio (Only for this particular question, assume the recycle flow rate as 20) v. The SRT (solids residence time)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
2a
Transcribed Image Text:Consider an activated sludge WWTP (wastewater treatment plant). Influent comes in at
28 million L/day, and effluent flows out at 26 million L/day. The recycle flow rate is 30
million L/day. The aeration basin has a volume of 9.0 million liters. The influent and
effluent BODS are 450 mg/L and 30mg/L, respectively. The biomass (MLVSS, mixed
liquor volatile suspended solids) concentrations in the waste sludge and clarifier effluent
are 6,205mg/L and 30mg/L, respectively. Calculate:
i. The total biomass discharge rate, kg/day
ii. The observed yield
iii. The biomass concentration in the aeration tank, mg/L
iv. The recycle ratio (Only for this particular question, assume the recycle
flow rate as 20)
v. The SRT (solids residence time)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 5 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning