Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The half-saturation constant (kinetic constant) of the Monod model which governs the reactions in the activated sludge system is 90 mg COD L-1. The concentration of Chemical Oxygen Demand (COD) in the effluent from this system is 25 mg L-1. The growth rate of the organisms in this case is 0.9 days-1. The activated sludge tank has a volume of 50 m3 and the flow rate through it is 500 m3 day-1. The organism concentration is measured as MLVSS (mixed liquor volatile suspended solids) and they are being produced at a rate of 150 mg MLVSS L hour at steady state. For this problem assume that the death rate in the process is zero (kd = 0.0) -1 -1
(a) What is the maximum specific growth rate of the organisms (day-1)
(b) What is the concentration of MLVSS in the activated sludge (mg L-1)
(c) What is the sludge wastage rate (kg day-1)?
(d) If the yield coefficient (mass suspended solids produced/mass substrate removed) of the system is 0.8, what is the concentration of COD (mg L-1) in the influent?
Two ropes are attached to the eye bracket. The resultant force R of the two forces equals 1000-lb and the line of action is directed along the x-axis. if the magnitude of force F1 is 250-lb, determine the magnitude of force F2 and the angle
Online professor's response to: Probability problems, A very rich investor has a small amount of spare cash which she wishes to invest. She has four options to choose from.
What is the ratio of the magnitude of E2 to the magnitude of E1? You may neglect the effects of gravity on the proton.
how much money today is equivalent to lump sum of $100,000 in 20 years with interest rate of 6% per year compounded (a)monthly, (b)quarterly, (c)semiannually
Member ABC is composed of two sections. Section AB has an outside diameter of 60mm and inside diameter of 50mm, whereas section BC is solid. Find the maximum shear stress due to the 1.5kN·m torsional moment applied at B and the 2.0kN·m moment at C..
The motor-generators installed with these pump-turbines have an efficiency of 0.85 when operating as motors and 0.91 when operating as generators. Each pump-turbine uses its own 100-m-long, 150-cm steel penstock.
What is the equivalency factor for the 14 kip single axle?
A copper wire breaks under an engineering stress of 43x10^3 psi. Its ductility is 77%it reduction area. Calculate the true stress (in psi) for fracture in the neck region.
As the piston is compressed, the pressure also increases by 2000000 Pa. If there is 4 times as many atoms of nitrogen as helium, how many moles of helium are in the cylinder?
Compute the required weight of coarse aggregate per cubic yard. to adjust the mix so as to increase the compressive strength, the water-to-cement ratio is reduced to 0.45. will the quantity of coarse aggregate increase, decrease, or stat the same
The specification for a particular application calls for the blocks to have a mean compressive strength greater than 1350 kPa. A sample of 100 blocks is produced and tested.
A 300 mm diameter pipe is placed in a 3 m deep rectangular trench that is 0.60 m wide. The trench is backfilled with clay that has a bulk unit weight of 18.8 kN/m3. Compute the dead load due to backfill that the pipe must support.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd