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?
A sprinkler system uses an outdoor reservoir at El 50. A fire pump moves Q = 3 ft^3/sec through a 1.0' dia pipe 300' long to an 8" dia main at El 200. To distribute water to sprinklers, a pressure head at the pipe junction hp =100' is required.
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
an uncontrolled mosaic is required for an environment project using 1/30000 photos. only the central area of each photo is used for the mosaic- an area about the center measuring 4.5x4.5 inches
Two pounds of an ideal gas are contained within a piston-cylinder arrangement. The initial volume and pressure are 1 ft3 and 75 psia respectively. The final volume is 3 ft3.
a vehicle pulls out onto a single lane highway that has a flow rate of 280 vehhr poisson distributed. the driver of the
1. a watershed contains 16.2 ha and 24.3 ha of agricultural and residential land use respectively. the last rainfall
How would you determine the substrate concentration and biomass concentration at 0.5 days - Use spreadsheet to solve for the concentrations with a delta t = 0.01 days.
Beam AC has been cut at D, and the left section free-body diagram is shown. Calculate the internal resultant normal force N, shear force V , and bending moment at D, M. Use the sign convention for internal resultant loading in a beam.
An air compressor is used to charge an initially empty 200-L tank with air up to 5 MPa. The air inlet to the compressor is at 100 kPa, 17?C and the compressor's isentropic efficiency is 80%. Find the total compressor work and the change in exergy ..
The time-scale for a point source injected mid-way between two impermeable boundaries to become uniformly mixed across the section is given by the rule-of-thumb
Determine (a) the initial and final temperatures, (b) the mass of liquid water when the piston first starts moving, and (c) the work done during this process. Also, show the process on a P-v diagram.
If the average orthometric height of the area is 4156.08 ft and the average geoid separation is -23.05 m, calculate ellipsoid lengths of the lines suitable for use in computing SPCS83 coordinates. (Use 6,371,000 m for an average radius for the Ear..
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