The waste water 1MLD with 500 mg/L 5-day BOD is to be treated by activated sludge process (ASP). The desired effluent BOD is 30 mg/L. (a) Volume of aerator (b) If the ASP is designed as completely mixed reactor without sludge recycle, determine the hydraulic detention time and biological solids retention time of the unit. (c) Draw the flow diagram of this process. Assume BOD loading rate of aeration tank to be 0.5 kg of BOD removed/kg of MLSS/ day. Concentration of mixed suspended solids (MLSS) in aeration tank is 2,000 mg/L.
The waste water 1MLD with 500 mg/L 5-day BOD is to be treated by activated sludge process (ASP). The desired effluent BOD is 30 mg/L. (a) Volume of aerator (b) If the ASP is designed as completely mixed reactor without sludge recycle, determine the hydraulic detention time and biological solids retention time of the unit. (c) Draw the flow diagram of this process. Assume BOD loading rate of aeration tank to be 0.5 kg of BOD removed/kg of MLSS/ day. Concentration of mixed suspended solids (MLSS) in aeration tank is 2,000 mg/L.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![The waste water 1MLD with 500 mg/L
5-day BOD is to be treated by activated sludge
process (ASP). The desired effluent BOD is
30 mg/L.
(a) Volume of aerator
(b) If the ASP is designed as completely mixed
reactor without sludge recycle, determine
the hydraulic detention time and biological
solids retention time of the unit.
(c) Draw the flow diagram of this process.
Assume BOD loading rate of aeration tank
to be 0.5 kg of BOD removed/kg of MLSS/
day. Concentration of mixed suspended
solids (MLSS) in aeration tank is 2,000
mg/L.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F55bd674a-b063-4d00-a3fe-87731ca5fb76%2F5da9c257-eaa8-45c0-8ea8-dbcc7771c8ea%2Fsj9mc2o_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The waste water 1MLD with 500 mg/L
5-day BOD is to be treated by activated sludge
process (ASP). The desired effluent BOD is
30 mg/L.
(a) Volume of aerator
(b) If the ASP is designed as completely mixed
reactor without sludge recycle, determine
the hydraulic detention time and biological
solids retention time of the unit.
(c) Draw the flow diagram of this process.
Assume BOD loading rate of aeration tank
to be 0.5 kg of BOD removed/kg of MLSS/
day. Concentration of mixed suspended
solids (MLSS) in aeration tank is 2,000
mg/L.
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