Chapter 5: Surface water transport

What is the equation for solving for C_s (solid phase concentration)

C_s=K_D*C_w

What is the equation for solving for K_D (Partition coefficient)

K_D=f_OC*K_OC

What does f_s represent?

Fraction Sorbed (fraction of contaminant associated with the solid phase)

What does C_s represent?

Solid phase concentration

What does C_w represent?

Aqueous phase concentration

What does α_settling represent?

First order rate constant for removal by settling

What does α_dilute represent?

First order rate constant for removal by dilution/flow of river or stream

What does α_decay represent?

First order rate constant for removal by decay of radioactive isotope

What does α_degrad represent?

First order rate constant for removal by degradation

What rate constant(s) for removal would you expect to find in a lake?

α_settling, α_dilution, α_degrad, and α_decay if the contaminant is a radioactive isotope

What rate constant(s) for removal would you expect to find in a river/stream?

α_settling, α_degrad, and α_decay if the contaminant is a radioactive isotope (NOTE: NO FLOW/DILUTE)

When would you want to model a lake with multiple homogenous compartments?

during seasonal thermal stratification

What model can we simplify a lake to

Homogenous compartment(s)

What model can we simplify a river/stream to

open channel

what two types of dispersion are dominant when it comes to surface water

Turbulence and advective heterogeneities

What does E_x represent?

Dispersion coefficient

What does u* represent?

mean water velocity

Which of these equations is solely for use with rivers/streams (advection only)

5.18

Which of these equations is solely for use with lakes? (one compartment)

5.17

Which of these equations is solely for use with rivers/streams (advection and dispersion)

5.21

what does t* represent?

time at which maximum concentration occurs