Engineering, 15.11.2019 22:31 anggar20

Arectangular well-mixed aeration lagoon is 60m long, 5m wide, and 2m deep. it receives 400 cubic meters/day of wastewater with a bod5 of 336mg bod5/l for treatment. the biodegradation rate constants for the wastewater are yield coefficient = 0.8mg vss/mg bod5, endogenous decay constant=0.08 d^(-1), maximum specific microbial growth rate =1.10 d^(-1), and the half velocity constant = 76.0mg bod5/l. the pond's efficiency depends on oxygen being always available for the microbes to use in degrading the wastewater organic carbon. how much oxygen (in kg) must be supplied daily to the pond?

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, kayabwaller4589

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Answers: 3

continue

Engineering, 04.07.2019 03:10, lauriepdx17

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

Answers: 1

continue

Engineering, 04.07.2019 18:10, ashleybaber4966

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Answers: 1

continue

Engineering, 04.07.2019 18:10, kevin72836

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Answers: 2

continue

You know the right answer?

Arectangular well-mixed aeration lagoon is 60m long, 5m wide, and 2m deep. it receives 400 cubic met...