Determine the volume of each cfstr

Assignment Help Civil Engineering
Reference no: EM13545583

Disinfection by ozone follows first-order kinetics, with a rate constant of 1.2/minute. The town of Obfisquitory wishes to use 4 equal volumes of CFSTR's in series to disinfect 2 million gallons per day (mgd) of water containing 1000 coliforms/L to the maximum required concentration (MCL) of 1 coliform/L.

a) Determine the volume of each CFSTR

b) If a two CFSTR, with a volume equal to the sum of the four in series, is used for disinfection, what will the final coliform concentration be?

Reference no: EM13545583

Questions Cloud

To orient a transit in azimuth when the transit is set up : To orient a transit in azimuth when the transit is set up over a point D, a backsight is taken to another point, C, with vernier A set at the azimuth of the line CD and with the telescope in its inverted position
Find index r and recurrence relation compute : You will be using a large crane... lets say one with a capacity of 30T. What considerations need to be made prior to picking up a 15T load with the crane? If you are familiar with the use of a crane be sure to include the discussion of the outriggers..
Determine its changes in kinetic and potential energy : An automobile having a mass of 900 kg initially moves along a level highway at 100 km/hr relative to the highway. It then climbs a hill whose crest is 50m above the level highway and parks at a rest area located there
What is the difference among cement plaster : If the tangents intersect at an angle of 40 degrees, what is the highest degree of curve that can be used?..how to solve this problem using chord basis formula?
Determine the volume of each cfstr : Disinfection by ozone follows first-order kinetics, with a rate constant of 1.2/minute. The town of Obfisquitory wishes to use 4 equal volumes of CFSTR's in series to disinfect 2 million gallons per day (mgd) of water containing 1000 coliforms/L to t..
What is the maximum length of trench that can excavated by : What is the maximum length of trench that can excavated by hand economically rather than by a trenching machine. it cost 900.00 to transport a trenching machine to the job and back to the storage yard. the trenching machine can excavate 265 linear fe..
Determine the design compressive strength for a pinned ended : Determine the design compressive strength for a pinned ended HSS 8x8x3/8 column of ASTM A500, grade B steel with an unbraced length of 35ft?
Should schmidt hammer test be adopted as an alternative test : If concrete compression test fails, should Schmidt hammer test be adopted as an alternative test to prove the concrete strength?
Shall engineers accept the proposal : Is it desirable to use concrete of very high strength i.e. exceeding 60MPa? What are the potential problems associated with such high strength concrete?

Reviews

Write a Review

Civil Engineering Questions & Answers

  Find min acceptable wire diameter for max allowable stress

A 200ft length of steel wire is to carry a tensile load of 340lb. Find the minimum acceptable wire diameter if the maximum allowable stress in the wire is 30ksi, and the lengh of the wire must not increase by more than 2 inches when there is no ch..

  Atual discharge of a water pipeline

If the elevation difference between the water surfaces is y = 25 + x/11 metres, what minimum pipeline diameter will be required to convey the design discharge? Once your design is complete, determine the actual discharge. The value of x equals 23.

  Estimate critical pressure of mixture of methane nd n-hexane

Estimate the critical pressure of a mixture of methane and n-hexane if the critical temperature of the mixture is known to be 200 F. Compare your answer with the critical pressures of pure methane and pure n-hexane.

  Find length of shortest ladder that can stand outside wall

a tower is surrounded by a wall that is 10 m high and 30 m away from the base of the tower. compute the length of the shortest ladder that can stand outside the wall and lean against the tower.

  What deflection will occur on a mercury-water manometer

The venturi meter is in a 60 cm pipe. What deflection will occur on a mercury-water manometer connected between the upstream and throat section if the discharge is .57 m^3/s. Assume T = 20 C

  What is the weight of the gate per meter of length

An 800 ft ship has a displacement of 35,000 tons, and the area defined by the waterline is 38,000 ft^2. Will the ship take more or less draft when streaming from salt water to fresh water? How much will it settle or rise?

  How long will take for consolidation of similar clay layer

For a given load increment, the time for 50% consolidation was 5 min 20 sec. How long will it take for 50 % consolidation of a similar clay layer in the field that is 8.2 ft thick & drained on one side only

  What is the concentration of ocl-

HOCL is added to water in a tank as a disinfectant. after equilibrium is reached it is found that the pH of the water in the tank is 8.2 and the gas phase partial pressure is the head space of the tank is 0.2E-7 atm. (not: henry's law constant for..

  Calculate maximum external pull in each gear of a tractor

calculate maximum external pull in each gear of a tractor when given speed, slope, weight, and rolling resistance

  Find what is probability of failure with standard deviation

A column has a mean capacity of 950 kip. The standard deviation for the column capacity is 50 kip. The average load is 700 kip with a standard deviation of 75 kip. What is the probability of failure, pf

  Total expansion and total bleeding in term of percentage

To avoid shrinkage cracks in the grout, what should be the total expansion and total bleeding in term of percentage for the grout?

  Determine mans velocity and acceleration at the instant

While the swing bridge is closing with a constant rotation of 0.5 rad/s, a man runs along the roadway such that when d = 10 ft he is running outward from the center at 5ft/s with an acceleration of 2 ft/s^2, both measured relative to the roadway.

Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd