Determine volume of reactor needed for each hydraulic regime

Assignment Help Civil Engineering
Reference no: EM13309743

The kill of pathogens by disinfection in water treatment can be described by a first order reaction. Complete a reactor comparison for a batch reactor, CSTR and PFR for disinfection. The treatment plant produces 100 L/s of water. The starting concentration of pathogens is 20,000 organisms/L and the desired final concentration is 5 organisms/L. The reaction rate constant is 0.05 per second.

a) Determine the volume of reactor needed for each hydraulic regime.

b) From the volume, calculate a possible L x W x H for each tank. Are the tanks sizes reasonable?

c) Which design would you choose and why? (For the batch system, assume one batch reactor is filling while the other is reacting).

Reference no: EM13309743

Questions Cloud

When choosing a verb tense your instructor suggests : When choosing a verb tense your instructor suggests that. According to your instructor, in business writing, a paragraph's topic sentence should
How far in front of the vertex of the mirror : A concave mirror is to form an image of the filament of a headlight lamp on a screen 8.00 m from the mirror, How far in front of the vertex of the mirror should the filament be placed
State what are the concentrations of oh- and h : What are the concentrations of OH- and H in a 0.00067 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
Identify the strengths and weaknesses of this study : Identify the strengths and weaknesses of this study?
Determine volume of reactor needed for each hydraulic regime : The kill of pathogens by disinfection in water treatment can be described by a first order reaction. Complete a reactor comparison for a batch reactor, CSTR and PFR for disinfection. The treatment plant produces 100 L/s of water.
Depict qualitative pv graph and show the path of the process : ethanol vapor at 0.5 bar and 78 degrees celcius is compressed isothermally to 2 bar in a reversible process in a closed system a) draw a qualitative PV graph and show the path of the process.
Determine the height of the weir p and the weir length : The discharge range is 0.1 to 1.0 cfs. The maximum approach flow depth is 18 inches. Determine the height of the weir P and the weir length l in the flow direction. Assume cv =1.
Find the final temperature and find the process work : A constant pressure container is filled with 1 kg of stainless steel and 0.5 kg of PVC (polyvinyl chlo- ride) both at 20C and 0.25 kg of hot air at 500 K, 100 kPa. The container is now left alone with no external heat transfer.
Explain equilibrium the forward rate constant drops : Select all of the correct statements about equilibrium from the choices below. At equilibrium the rates of forward and reverse reactions are equal. As a reaction proceeds forward toward equilibrium the forward rate constant drops.

Reviews

Write a Review

 

Civil Engineering Questions & Answers

  What is the height above ground level in the afternoon

Natural gas is stored in very large vessels consisting of a floating tank and a liquid seal. The pressure in the tank is constant because the weight of the floating tank is constant. In the morning, the temperature of the natural gas is 300 K.

  Compute required weight of coarse aggregate per cubic yard

A concrete mix with a 3-inch slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.

  Find what is maximum grade the vehicle could ascend

a 3200-lb car (Cd = 0.35, Af = 25ft^2, and p= 0.002378 slugs/ft^3) has 14-inch-radius wheels, a drivetrain efficiency of 93%, an overall gear reducation ratio of 3.2 to 1, and drive axle slippage of 3.5%. the engine develops a maximum torque of 21..

  Determine the amplitude of steady-state deflection

The motor in the unit runs at 300 rpm and produces an unbalanced force of 60 lb at this speed. Neglect weight of the beams and assume 1% viscous deflection in the system; for steel E=30,000 ksi.

  Calculate the elavations at vpc-vpt-high point and station

A 2000 ft vertical curve connects to a +3% grade to a -5% grade. If the vertical tangents intersect at station 52+60.55 and elevation 877.62 ft, calculate the elavations at the VPC, VPT, high point and station 54+00.

  What type of contract would you want and why

If you were asked to perform an excavation contract competitively with limited data, what type of contract would you want and why?

  Determine the factors of safety against sliding

assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m length of dam.

  What is the range of the values that would be expected

a spot speed study was conducted on a freeway on which the mean speed and the standard deviation were found to be 72 .4 mi/hr and 5.4 mi/hr, respectively. what is the range of the values that would be expected to contain the middle 95 percent of s..

  Would calcite be over or under-saturated in hot water heater

If log KSO, calcite (CaCO3(s)) = -8.61 at 50 oC, would calcite be over- or under- saturated in a hot water heater at 50 oC if the water was in equilibrium with calcite at 25 oC (log KSO = -8.30) when it entered the house

  Determine the reaction forces at points b and c

The fixture AC is designed with a screw adjustment to regulate the height of the 900 N load supported by the roller at A. The screw bears against a smooth surface at B. Determine the reaction forces at points B and C. Neglect the weight of the fix..

  Maximum size of coarse aggregate

What is your recommendation for the maximum size of coarse aggregate for the following situation? A continuously reinforced concrete pavement cross section contains a layer of No. 6 reinforced bars at 15.24 cm centers,

  What is the carbon concentration at 4 mm below surface

A 1045 steel will be heat treated in air at 900 C. What is the carbon concentration at 0.4 mm below the surface after 6 hours

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