Engineering, 14.12.2019 05:31 arnold2619

Acompletely mixed activated-sludge plant is being designed for a wastewater flow of 5.0 mgd. the soluble bod concentration of the influent to the aeration basin is 200 mg/l. the effluent soluble bod requirement is 10 mg/l. the mean cell residence time is to be 8.0 days at an mlss concentration of 2500 mg/l. from pilot plant data, y = 0.6 lb vss/lb bod, kd = 0.06 day–1 , and 80% of the mlss are vss. calculate:

a) the volume of the aeration basin, in gals.
b) the dry mass of excess solids in the waste sludge in lb/day.
c) the aeration period, q in hours.
d) food-to-microorganism ratio, f/m.
e) bod loading, lb/day-1000 ft3 .

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 03:10

What precautions should you take to prevent injuries when dealing with heavy loads?

Answers: 1

Answer

Engineering, 04.07.2019 19:10

What is the main objective of using reheat rankine cycle?

Answers: 3

Answer

Engineering, 04.07.2019 19:10

What are the major differences between injection molding and extrusion?

Answers: 2

Answer

Engineering, 04.07.2019 19:10

Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.

Answers: 1

Answer

You know the right answer?

Acompletely mixed activated-sludge plant is being designed for a wastewater flow of 5.0 mgd. the sol...

Questions