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!
You are designing a reactor that uses chlorine in a PER or CMFR to de-stroy pathogens in water. A minimum contact lime of 30 min is required to reduce the pathogen concentration from 100 pathogens L-1 to below 1 pathogen L-1 through a first-order decay process. You plan on treating water at a rate of LOOD gal min-1.
(a) What is the firssorder decay rate constant?
(b) What is the minimal size (in gallons) of the reactor required for a plug Row reactor?
(c) What size (in gallons) of CMFR would be required to reach the same outlet concentration?
(d) Which type of reactor would you select if your treatment objective stated that "no discharge an ever be greater than 1 pathogen L-1?" (Explain your reasoning.)
(e) If the desired chlorine residual in the treater water after it leaves the reactor is 0.20 mg L-1. and the chlorine demand used during treatment is 0.15 mg L-1, what must be the daily mass of chlorine added to the reactor in grams?
Farah Manufacturing wants it's investments to double in value in 4 years, what rate of return would it have to make on the basis of (a) simple interest (b) compound interest
Determine the maximum external pull, in each of the four gears, for a tractor with 23-hp, and a max speed of 3.6 mph in 1st gear and a efficiency of 92%. When it is operated over a haul road whose slope is +2.53%.
The flow is designed using a rectangular coordinate system whose orgin is at the free surface midway between the walls. The x axis is normal to the walls, and the y axis points vertically downward.
Water is to be transported at a rate of 60,000 gallons/min in uniform flow in an open channel whose surface are lined with clay tile. The bottom slope is 0.0014. Determine the dimensions of the best cross section
A first-order reaction that results in the destruction of a pollutant has a rate constant of 0.1/day. (a) How many days will it take for 90 per- cent of the chemical to be destroyed (b) How long will it take for 99 percent of the chemical to be destr..
How long would it take to fill a 30 yd^3 packer truck that compresses waste to 750 lb/yd^3 if it travels 100 ft between stops at an average of 5mph and it takes 1 minute to load 200 lb of waste at each stop
Compute the critical buckling load for a 2.5m timber column of full size square section 0.10m x 0.10m. The column has pinned ends(k=1). Assume the modulus of elasticity is 12Gpa and that the Euler formula applies.
In part (a) of this question we are asked to calculate τmax. In order to do this we separate the cross section at the neutral axis and take the entire upper half (as shown in the cramster solution).
The continuity equation is just the water balance for the slope or any small portion of the slope and can be given as: p - fp = RO where i = rainfall rate, fp = infiltration capacity, and RO = runoff rate, all expressed as a depth per time
Part A Determine the tension developed in cable AB for equilibrium of the 350-lb crate Part B Determine the tension developed in cables AC for equilibrium of the 350-lb crate. Part C Determine the force developed along strut AD for equilibrium of ..
A high strength steel is developed with a yield stress of 1460 MPa and a critical stress intensity factor of 30MPa(m)^0.5. Calculate the size of the initial flaw that will cause failure in an infinite plate when the load applied is 50% of the load..
To determine the original length of a slender rod given the normal strain and deformation experienced by the rod due to an applied axial load. rod AB is subjected to the loading of two blocks, each of weight W
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