Save
W
at
e
r
T
r
e
at
m
e
nt
G
r
a
d
e
1
A
W
W
A
Terms in this set (57)
, The two most important factors
impacting the effectiveness of
chlorination are
a. pH of the water and the content
of foreign substances in the water
b. concentration of chlorine and the
content of foreign substances in
the water
c. concentration of chlorine and
contact time
d. pH and temperature of the
wastewater
The treatment process that
controls corrosion or scaling is
known as
a. chemical control
b. stabilization
c. passivation
d. corrosion kinetics
Permanganate reactions are highly
dependent upon
a. organic in the water
b. pH
c. temperature
d. alkalinity
It is hard to kill the organism that
causes which one of the following
illnesses?
a. Cholera
b. Typhoid
c. Cryptosporidiosis
d. Infectious hepatitis
Disinfection go water wells with
free chlorine requires exposure for
_____ at a concentration of
______.
a. 6 to 12 hours; 25 mg/L
b. 12 to 24 hours; 25 mg/L
c. 12 to 24 hours; 50 mg/L
d. 24 to 28 hours; 100 mg/L
Detention time in flocculation
basins are usually designed to
provide for
a. 5 to 15 minutes.
b. 15 to 45 minutes.
c. 45 to 60 minutes.
d. 60 to 90 minutes.
Alum works best in a pH range of
a. less than 4.0.
b. 4.0 to 5.5.
c. 5.8 to 7.5.
d. Greater than 9.0.
W
at
e
r
T
r
e
at
m
e
nt
G
r
a
d
e
1
A
W
W
A
Terms in this set (57)
, The two most important factors
impacting the effectiveness of
chlorination are
a. pH of the water and the content
of foreign substances in the water
b. concentration of chlorine and the
content of foreign substances in
the water
c. concentration of chlorine and
contact time
d. pH and temperature of the
wastewater
The treatment process that
controls corrosion or scaling is
known as
a. chemical control
b. stabilization
c. passivation
d. corrosion kinetics
Permanganate reactions are highly
dependent upon
a. organic in the water
b. pH
c. temperature
d. alkalinity
It is hard to kill the organism that
causes which one of the following
illnesses?
a. Cholera
b. Typhoid
c. Cryptosporidiosis
d. Infectious hepatitis
Disinfection go water wells with
free chlorine requires exposure for
_____ at a concentration of
______.
a. 6 to 12 hours; 25 mg/L
b. 12 to 24 hours; 25 mg/L
c. 12 to 24 hours; 50 mg/L
d. 24 to 28 hours; 100 mg/L
Detention time in flocculation
basins are usually designed to
provide for
a. 5 to 15 minutes.
b. 15 to 45 minutes.
c. 45 to 60 minutes.
d. 60 to 90 minutes.
Alum works best in a pH range of
a. less than 4.0.
b. 4.0 to 5.5.
c. 5.8 to 7.5.
d. Greater than 9.0.
