A complete mix activated sludge process is to be used for biological treatment. This plant receives 10,000 m³ of wastewater per day with BOD loading of 250 mg/L. The primary treatment efficiency is 25%. Assume the followings: Determine the followings: (i). (ii). -4- Plant effluent BOD5 = 12 mg/L Biomass yield = 0.54 kg biomass / kg BOD Endogenous decay rate = 0.05 day-¹ Solids Retention Time = 8 days MLVSS concentration in the aeration tank = 2,700 mg/L Waste and recycle solids concentration = 12,000 mg/L The hydraulic detention time in hours. The aeration tank volume in cubic meters. ...4/- SULIT EAP582

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A complete mix activated sludge process is to be used for biological
treatment. This plant receives 10,000 m³ of wastewater per day with
BOD loading of 250 mg/L. The primary treatment efficiency is 25%.
Assume the followings:
●
●
-4-
Plant effluent BOD5 = 12 mg/L
Biomass yield = 0.54 kg biomass / kg BOD
Endogenous decay rate=0.05 day-¹
Solids Retention Time = 8 days
MLVSS concentration in the aeration tank = 2,700 mg/L
Waste and recycle solids concentration = 12,000 mg/L
Determine the followings:
(i). The hydraulic detention time in hours.
(ii).
The aeration tank volume in cubic meters.
...4/-
SULIT
EAP582
Transcribed Image Text:A complete mix activated sludge process is to be used for biological treatment. This plant receives 10,000 m³ of wastewater per day with BOD loading of 250 mg/L. The primary treatment efficiency is 25%. Assume the followings: ● ● -4- Plant effluent BOD5 = 12 mg/L Biomass yield = 0.54 kg biomass / kg BOD Endogenous decay rate=0.05 day-¹ Solids Retention Time = 8 days MLVSS concentration in the aeration tank = 2,700 mg/L Waste and recycle solids concentration = 12,000 mg/L Determine the followings: (i). The hydraulic detention time in hours. (ii). The aeration tank volume in cubic meters. ...4/- SULIT EAP582
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