![subject](/tpl/images/cats/User.png)
Engineering, 10.12.2019 21:31 milkshakegrande101
Awastewater treatment plant uses an activated sludge process for secondary treatment of 0.300 m3 /s of primary effluent. the mixed liquor has a biomass concentration of 2,100 mg vss/l, and the ras biomass concentration is 10,000 mg vss/l. the substrate concentration in the primary effluent (i. e., s0) is 220 mg bod5/l. the f/m ratio for the activated sludge tank is 0.52 mg bod5/(mg vss * d), and the cell residence time is 9.0 d.
a. what is the volume of the activated sludge tank?
b. what is the was flow rate?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 19:10
What is a monomer? how do they form a ploymer from the view point of chemical bonding?
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 19:10
Plan an experiment to measure the surface tension of a liquid similar to water. if necessary, review the ncfmf video surface tension for ideas. which method would be most suitable for use in an undergraduate laboratory? what experimental precision could be expected?
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 05.07.2019 04:30
Technician a says that in a worm gear steering system, most excessive steering free play is usually found in the gearbox. technician b says that in a rack-and-pinion steering system, excessive free play can be found in the bushings. who is correct?
Answers: 2
You know the right answer?
Awastewater treatment plant uses an activated sludge process for secondary treatment of 0.300 m3 /s...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/ekonomika.png)
Business, 14.04.2021 17:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
Health, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 14.04.2021 17:40
![question](/tpl/images/cats/istoriya.png)
History, 14.04.2021 17:40
![question](/tpl/images/cats/User.png)
Engineering, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/health.png)
Health, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/biologiya.png)
Biology, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40
![question](/tpl/images/cats/mat.png)
Mathematics, 14.04.2021 17:40