TEXAS WASTEWATER B EXAM WITH COMPLETE
SOLUTIONS GUARANTEED PASS
In an activated sludge treatment system, primary
treatment processes include the: - ANSWER ->Primary
Clarifiers
In a washing grit remover, the grit is moved slowly by
screw conveyors up an inclined channel in order to? -
ANSWER ->Removal of Inorganic material from grit
An efficient primary clarifier is expected to remove ? of
the influent settleable solids. - ANSWER ->90% or above
Proper operation of a facultative pond system requires
that:, - ANSWER ->Adequate DO at surface at all times
The amount of organic matter removed by a trickling
filter is mostly dependent on the recirculation ratio -
ANSWER ->True
In an activated sludge treatment plant, a Sludge Volume
Index (SVI) of 180 would indicate - ANSWER ->Bulking
The purpose of returning the solids from the bottom of
the clarifier to the aeration tank in the activated sludge
, process is to - ANSWER ->Reseed The AB, Remove sludge
from FC
Microscopic examination of a good-settling sludge should
show a predominance of: - ANSWER ->Free swimmer
rotifers stalked ciliates
When nitrification takes place in the activated sludge
process, facultative bacteria use - ANSWER ->Dissolved
oxygen (DO) or oxygen obtained from food materials
such as sulfate or nitrate
In an activated sludge process, the results of a mixed
liquor settling test indicate that the supernatant of the
mixed liquor sample is clear, but the supernatant of the
plant effluent sample is turbid. These test results indicate
that the problem is occurring in the? - ANSWER -
>Primary clarifiers
One indication that an anaerobic digestion facility is
improving would be? - ANSWER ->Low C02 high Methane
The terms "low rate" and "high rate" when used in
reference to the anaerobic digester refer to the rate of
stabilization of the raw sludge? - ANSWER ->False
SOLUTIONS GUARANTEED PASS
In an activated sludge treatment system, primary
treatment processes include the: - ANSWER ->Primary
Clarifiers
In a washing grit remover, the grit is moved slowly by
screw conveyors up an inclined channel in order to? -
ANSWER ->Removal of Inorganic material from grit
An efficient primary clarifier is expected to remove ? of
the influent settleable solids. - ANSWER ->90% or above
Proper operation of a facultative pond system requires
that:, - ANSWER ->Adequate DO at surface at all times
The amount of organic matter removed by a trickling
filter is mostly dependent on the recirculation ratio -
ANSWER ->True
In an activated sludge treatment plant, a Sludge Volume
Index (SVI) of 180 would indicate - ANSWER ->Bulking
The purpose of returning the solids from the bottom of
the clarifier to the aeration tank in the activated sludge
, process is to - ANSWER ->Reseed The AB, Remove sludge
from FC
Microscopic examination of a good-settling sludge should
show a predominance of: - ANSWER ->Free swimmer
rotifers stalked ciliates
When nitrification takes place in the activated sludge
process, facultative bacteria use - ANSWER ->Dissolved
oxygen (DO) or oxygen obtained from food materials
such as sulfate or nitrate
In an activated sludge process, the results of a mixed
liquor settling test indicate that the supernatant of the
mixed liquor sample is clear, but the supernatant of the
plant effluent sample is turbid. These test results indicate
that the problem is occurring in the? - ANSWER -
>Primary clarifiers
One indication that an anaerobic digestion facility is
improving would be? - ANSWER ->Low C02 high Methane
The terms "low rate" and "high rate" when used in
reference to the anaerobic digester refer to the rate of
stabilization of the raw sludge? - ANSWER ->False
