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!
A complete-mix activated sludge process with recycle is being operated at the following conditions: Q = 1,650 m3/d; recycle = 0.60; So = 200 mg COD/L. Lab studies have shown that the rate constant associated with the process are as follows: k = 0.95 mg COD/mg VSS-day; Y = 0.48 mg VSS/ mg COD, half-saturation K = 85 mg COD/L; ke = 0.07 d-1. The average VSS concentration in the clarified effluent from the secondary clarifier has been found to be 15 mg/L; VSS in the influent is negligible. Determine the effluent soluble substrate concentration, total effluent COD concentration, waste flow rate from the underflow of the secondary clarifier, sludge age, and MLVSS if the solids concentration in the recycle is 5000 mg/L and the hydraulic detention time is 8 h.
Assume the microorganisms are 55 percent efficient at converting food to biomass, the organisms have a first-order death rate constant of 0.05/day, and the microbes reach half of their maximum growth rate when the BOD5 concentration is 10 mg/L
Why is it not possible to obtain the modulus of elasticity in transverse bending by the same method used in a tension test Is there any relationship between the carbon content of these specimens and the four items in the object
Calculate the fraction of total atrazine that will be adsorbed to the soil given that the soil has an organic carbon content of 2.5%. The bulk density of the soil is 1.25 g/cm3; this means that each cubic centimeter of soil (soil plus water) conta..
If the ball strikes the side of the building 2s after being thrown, at what height above the base of the building did the ball strike the building? What is the velocity of striking?
Find the swell for a soil which weighs 1600kg/m in bank and 1300kg/m3 in bank and 1300kg/m3 Loose and what is the shrinkage factor for a mass of soil that takes up 1.5m3 in bank and reduces down to 1.2m3 after compaction
Long Line: the slope distance and zenith angle measured from point a to point b were 17,685.20 ftand 93degrees 13' 46" . The instrument and reflector heights were equal. If the elevation of the point A is 1854.43 ft above the MSL Datum
Exhaust gas from a chemical process flows at a rate of 8,000 actual cubic feet per minute (acfm) from point A at 250°F and 1 atm pressure. It flows through a circular duct to a fan
Set up a table showing curve elevations at the PVC, at the PVT, and at the half-station points along the curve. Compute the station and elevation of the curve turning point.
At a temperature of 9°C, a 2-mm gap exists between two polymer bars and a rigid support. Bars (1) and (2) have coefficients of thermal expansion of t1 = 102 x 10-6 /°C and t2 = 66 x 10-6/°C, respectively.
determine the constants sigma0 and k in the Hall petch equation of 70-30 brass sample.
A ball is thrown vertically upward with a speed of 15m/s. Determine the time of flight when it returns to its original position.
A consolidated-drained triaxial shear test on a normally consolidated clay yielded a drained friction angle of 28 degrees. If the confining pressure during the test was 15 psi, what was the major principal stress at failure.
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