A design wastewater flow of 1.5 MGD containing 175 mg/L BOD (in the primary effluent) is to be treated in a single-stage moving bed biofilm reactor (MBBR), while the design SALR is used to be 25 g/m2 /d with a target BOD removal of 75-80%. a) What is the BOD loading rate to the reactor in g/day? b) If the MBBR carrier has a specific surface area of 600 m2 /m3 and design carrier fill % of 40%, what would be the required volume of carrier and required MBBR tank volume? c) If the design carrier % void space is 60%, what would be the volume of liquid in the MBBR reactor? d) Calculate the estimated effluent BOD concentration.
A design wastewater flow of 1.5 MGD containing 175 mg/L BOD (in the primary effluent) is to be treated in a single-stage moving bed biofilm reactor (MBBR), while the design SALR is used to be 25 g/m2 /d with a target BOD removal of 75-80%. a) What is the BOD loading rate to the reactor in g/day? b) If the MBBR carrier has a specific surface area of 600 m2 /m3 and design carrier fill % of 40%, what would be the required volume of carrier and required MBBR tank volume? c) If the design carrier % void space is 60%, what would be the volume of liquid in the MBBR reactor? d) Calculate the estimated effluent BOD concentration.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A design wastewater flow of 1.5 MGD containing 175 mg/L BOD (in the primary effluent) is to
be treated in a single-stage moving bed biofilm reactor (MBBR), while the design SALR is used
to be 25 g/m2
/d with a target BOD removal of 75-80%.
a) What is the BOD loading rate to the reactor in g/day?
b) If the MBBR carrier has a specific surface area of 600 m2
/m3 and design carrier fill % of 40%,
what would be the required volume of carrier and required MBBR tank volume?
c) If the design carrier % void space is 60%, what would be the volume of liquid in the MBBR
reactor?
d) Calculate the estimated effluent BOD concentration.
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