Symbol
Explanation
Dimension
Unit,
See
for example
page
pKa
the negative logarithm
104
for the acid dissociation constant
Q
volume rate of water L3.rl
m 3 /h, l/s
114
flow
Qd,av
average volume of wa- L3.rl
m 3 /d
12
terper day
Qd,av,max
average infiltration per L3.rl
m 3 /d
24
day in maximum
month of the year
Qd,max
maximum volume of L3.rl
m 3 /d
water per day
Qh,av
average volume of wa- L3.rl
m 3 /h
11
ter per hour
Oh,max
average volume of wa- L3.rl
m 3 /h
11
ter of maximum hours
in the days of the year
(household+ industry)
or average hourly infiltration in maximum
month of the year (infiltration)
Qh,min
average volume of wa- L3.rl
m 3 /h
18
ter of minimum hours
in the days of the year
Qs,A
average infiltration per L3.rl
l/(ha · s), m 3 /(ha · s)
24
second per unit area in
periods with infiltration
Qs,av
average volume per
L3.rl
m 3 /s
19
second of water in an
average hour over the
year
362