Engineering, 18.11.2019 20:31 captaincluck52
The town of camp verde has been directed to upgrade its primary wwtp to a secondary plant that can meet an effluent standard of 25.0 mg/l bode and 30 mg/l suspended solids. they have selected a completely mixed activated sludge system for the upgrade. the existing primary treatment plant has a flow rate of 2,506 m3/d. the effluent from the primary tank has a bod5 of 240 mg/l. using the following assumptions, estimate the required volume of the aeration tank: 1. bod5 of the effluent suspended solids is 70% of the allowable suspended solids concentration. 2. growth constant values are estimated to be: ks =100 mg/l bod5; kd =0.025 d^-1 μm=10d^-1; y= 0.8mg vss/mg bod5 removed.3. the design mlvss is 3,000 mg/l.
Answers: 1
Other questions on the subject: Engineering
Engineering, 03.07.2019 14:10, volleyballfun24
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
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 18:10, siri5645
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:20, maustin5323
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
Answers: 1
You know the right answer?
The town of camp verde has been directed to upgrade its primary wwtp to a secondary plant that can m...
Questions in other subjects:
