Pollution Final

relative concentration

breakthrough curve Y axis:

pore volume

breakthrough curve X axis:

retardation coefficient

what is R?

porosity

what is n?

1-(Pb/Ps)

porosity formula

particle density

what is Ps?

2.65 g/cm3

what is the assumed value for particle density?

0.5

R is the pore volume when relative concentration is:

anion exclusion

if R is less than 1, this is a case of:

gravitational acceleration

what is g?

water density

what is Pf?

radius

what is r?

viscosity

what is eta/the curvy n?

settling velocity

what is w? (stoke’s law)

depth of lake

what is H? in settling time fomula

cm/sec

units for w (settling velocity)

detention time

what is t0?

V/Q

detention time (t0) formula

volume

what is V?

depth x surface area

V formula for a lake

outflow

what is Q?

pollutant loading per day/time

what is W?

step

W is only used in ____ problems

initial concentration

what is M0?

pulse

M0 (initial concentration) is only used in ____ problems

W/BV

equilibrium concentration formula

1-e^(-Bt)

to solve for 99% of equilibrium concentration, set .999 equal to ____ and solve for t

longitudinal dispersion coefficient

what is E?

shear velocity

what is u?

depth

what is d? (stream)

1000

1 kg/m³ equals _____ mg/L?

x = (t)(v)

formula to find distance where peak concentration occurs t (time) after spill

t=x/v

formula to find time that peak concentration occurs at x (distance) from the spill