Plot the resulting concentration with downstream distance x

Assignment Help Civil Engineering
Reference no: EM13302348

Write the mass balance equation for an ideal 1D plug-flow stream under steady state conditions with a first-order decaying substance. Solve for the concentration as a function of the concentration x=0, the rate constant kd, longitudinal distance x, and mean velocity u. Assume the rate constant for BOD decay is 0.2 d^-1, the mean velocity of the stream is 0.5 m s^-1, and the initial concentration is 100 mg L^-1 at x=0. Plot the resulting concentration with downstream distance x in km.

Reference no: EM13302348

Questions Cloud

Estimates for the third and fourth quarters of 2013 : Construct a less-than-cumulative frequency distribution of the data represented by the graph and represents the grouped frequency distribution of the time spent on the Internet by a randomly-selected sample of Internet subscribers during their most..
Consumer versus business markets : Which statement is true about consumer versus business markets?
Compute the potential difference between points : The work done by an external force to move a 6.50 uC charge from point a to point b is 0.0240 J. The charge started from rest, Find the potential difference, Vba between points
What was the amount he withdrew at the end of the eight year : If the interest rate was 8% per year throughout the whole period, what was the amount he withdrew at the end of the eight year?
Plot the resulting concentration with downstream distance x : Write the mass balance equation for an ideal 1D plug-flow stream under steady state conditions with a first-order decaying substance. Solve for the concentration as a function of the concentration x=0, the rate constant kd, longitudinal distance x..
How to calculate the radius of mg2+ in pm : Given that the radius of the O2- ion is about 140 pm in most oxides, calculate the radius of Mg2+, in pm. Your solution should include a sketch one face of the unit cell of MgO to show how the edge length of the unit cell is related to the ionic r..
What thickness of bc will result in same compressive stress : A second load P2 is uniformly distributed around the cap plate at B. The diameters and thicknesses of the upper and lower parts of the post are dAB= 1.25 in, tAB= 0.5 in, dBC= 2.25 in and tBC= .375 in respectively.
What is the minimum width of the screen : Ramon has a coherent light source with wavelength 586 nm. What is the minimum width of the screen if Ramon wants to display three interference maxima
Explain the binding energy of electrons to copper metal : The binding energy of electrons to copper metal is 389.3 kJ/mol. What is the longest wavelength of light that will eject electrons from copper metal? Enter units.

Reviews

Write a Review

Civil Engineering Questions & Answers

  What are 3 of the equivalent fixed-point problems

What are 3 of the equivalent fixed-point problems for f(x) = x2 - x -2=0?

  What will be shape of air-alcohol nd alcohol-water interface

A 10cm diameter vertical tank holds 20cm of water topped with 15cm of ethyl alcohol. The cylinder is rotated about its central axis at a rotation rate of 20 rad/s. (a) What will be the shape of the air-alcohol and alcohol-water interfaces (include ..

  Determine the force in chains ac and ad during the lift

the 3.5mg engine is suspended from a 500 kg spreader beam and hoisted by a crane which gives it an acceleration of 4m/s^2 when it has a velocity of 2m/s. determine the force in chains AC and AD during the lift.

  Plate with respect to the surface of the liquid will be

The plate is submerged in a liquid is a vertical position with the parallel sides horizontal and the shorter parallel side at the top and exactly in the surface of the liquid. The static moment of the plate with respect to the surface of the liqui..

  Calculate fraction of total atrazine that will be adsorbed

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..

  What is the hydrologic risk of occurring in the next 10years

Lake levels have been measured for the past 50 years at Cagles Mill Lake. The highest annual lake levels (in feet, mean sea level) on record are 887.5, 887.3, 886.5, 886.0, 885.9. The other 45 annual peaks are smaller.

  Determine the angular acceleration of the spool

determine the angular acceleration of the spool and the acceleration of the trailer. The wheels have negligible mass and are free to rotate.

  What is the over consolidation ratio of the soil

an increment of vertical stress of 150kpa compress the sample to a void ratio of1.43. what is the over consolidation ratio of the soil at the unloaded condition.

  Find what fraction of the population would make per year

Suppose there were reason to believe that incomes in some population were normally distributed, with a mean of $47,000 per year, and a standard deviation of $5,500 per year.

  Using pestan model for a project

I want to use PESTAN model for a project, can you please tell me any real scenario with available data on which I can formulate a project preferably related to oklahoma.

  What total allowable bod kg per day could be discharged

A 5000 m3/day wastewater treatment plant discharges to a river with a minimum drought flow of 140 m3/min (upstream of outfall) a)What total allowable BOD (kg/day) could be discharged by the plant if the BOD in the river after initial dilution must ..

  Explain the necessity of super elevation in the design

explain the necessity of super elevation in the design of horizontal curve also prove that rv=v2/{g(fs+e)}

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