TEXAS WASTEWATER B EXAM |LATEST UPDATED
2026/2027 |A COMPLETE SOLUTION WITH
VERIFIED QUESTIONS AND ANSWERS WITH
RATIONALES |GET IT 100% CORRECT |GRADED A+
Primary Clarifiers
In an activated sludge treatment system, primary treatment processes
include the:
Removal of Inorganic material from grit
In a washing grit remover, the grit is moved slowly by screw conveyors up
an inclined channel in order to?
90% or above
An efficient primary clarifier is expected to remove ? of the influent
settleable solids.
Adequate DO at surface at all times
Proper operation of a facultative pond system requires that:,
True
The amount of organic matter removed by a trickling filter is mostly
dependent on the recirculation ratio
Bulking
In an activated sludge treatment plant, a Sludge Volume Index (SVI) of
180 would indicate
Reseed The AB, Remove sludge from FC
, The purpose of returning the solids from the bottom of the clarifier to the
aeration tank in the activated sludge process is to
Free swimmer rotifers stalked ciliates
Microscopic examination of a good-settling sludge should show a
predominance of:
Dissolved oxygen (DO) or oxygen obtained from food materials such as
sulfate or nitrate
When nitrification takes place in the activated sludge process, facultative
bacteria use
Primary clarifiers
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?
Low C02 high Methane
One indication that an anaerobic digestion facility is improving would be?
False
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?
Control odor, Reduce BOD ,Control foaming, Aid in sludge
Besides disinfection, chlorination can be used in wastewater treatment
processes to?
450ml
If released to atmospheric pressure, one part liquid chlorine will expand
to about?
8-12"
2026/2027 |A COMPLETE SOLUTION WITH
VERIFIED QUESTIONS AND ANSWERS WITH
RATIONALES |GET IT 100% CORRECT |GRADED A+
Primary Clarifiers
In an activated sludge treatment system, primary treatment processes
include the:
Removal of Inorganic material from grit
In a washing grit remover, the grit is moved slowly by screw conveyors up
an inclined channel in order to?
90% or above
An efficient primary clarifier is expected to remove ? of the influent
settleable solids.
Adequate DO at surface at all times
Proper operation of a facultative pond system requires that:,
True
The amount of organic matter removed by a trickling filter is mostly
dependent on the recirculation ratio
Bulking
In an activated sludge treatment plant, a Sludge Volume Index (SVI) of
180 would indicate
Reseed The AB, Remove sludge from FC
, The purpose of returning the solids from the bottom of the clarifier to the
aeration tank in the activated sludge process is to
Free swimmer rotifers stalked ciliates
Microscopic examination of a good-settling sludge should show a
predominance of:
Dissolved oxygen (DO) or oxygen obtained from food materials such as
sulfate or nitrate
When nitrification takes place in the activated sludge process, facultative
bacteria use
Primary clarifiers
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?
Low C02 high Methane
One indication that an anaerobic digestion facility is improving would be?
False
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?
Control odor, Reduce BOD ,Control foaming, Aid in sludge
Besides disinfection, chlorination can be used in wastewater treatment
processes to?
450ml
If released to atmospheric pressure, one part liquid chlorine will expand
to about?
8-12"
