Engineering, 09.12.2019 19:31 tylorroundy
Determine the volume of three identical activated-sludge tanks following primary clarification to aerate 36,000 nv3/d witha bod concentration of 180 mg/l at a bod loading of 560 g/m3 0 d. what is the aeration time? for an fl m of 035. whatmlss concentration should be maintained in the aeration tanks? estimate the operating sludge age, assuming an effluentsuspended solids of 30 mg/l and the daily amount of waste-activated sludge solids from figure 13.1. if the waste sludgehas a concentration of 10.000 mg/l, what is the calculated volume of sludge to be wasted each day? determine thedimensions of three identical rectangular clarifiers (length. width, and side-water depth) with a 21 length-to-width ratio.
Answers: 1
Other questions on the subject: Engineering
Engineering, 03.07.2019 15:10, EmilySerna
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
Engineering, 04.07.2019 18:10, keigleyhannah30
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:20, miguel454545
Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.
Answers: 1
You know the right answer?
Determine the volume of three identical activated-sludge tanks following primary clarification to ae...
Questions in other subjects:
Chemistry, 11.09.2019 22:20
History, 11.09.2019 22:20
