Texas Wastewater Class B Exam 2024 | All Questions And Correct Answers
(Verified Answers) | Latest Version | Already Graded A+
Primary Clarifiers - (CORRECT ANSWER)In an activated sludge treatment system, primary treatment
processes include the:
Removal of Inorganic material from grit - (CORRECT ANSWER)In a washing grit remover, the grit is
moved slowly by screw conveyors up an inclined channel in order to?
90% or above - (CORRECT ANSWER)An efficient primary clarifier is expected to remove ? of the influent
settleable solids.
Adequate DO at surface at all times - (CORRECT ANSWER)Proper operation of a facultative pond system
requires that:,
True - (CORRECT ANSWER)The amount of organic matter removed by a trickling filter is mostly
dependent on the recirculation ratio
Bulking - (CORRECT ANSWER)In an activated sludge treatment plant, a Sludge Volume Index (SVI) of 180
would indicate
Reseed The AB, Remove sludge from FC - (CORRECT ANSWER)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 - (CORRECT ANSWER)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 - (CORRECT
ANSWER)When nitrification takes place in the activated sludge process, facultative bacteria use
Primary clarifiers - (CORRECT ANSWER)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?
1
, Low C02 high Methane - (CORRECT ANSWER)One indication that an anaerobic digestion facility is
improving would be?
False - (CORRECT ANSWER)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 - (CORRECT ANSWER)Besides disinfection,
chlorination can be used in wastewater treatment processes to?
450ml - (CORRECT ANSWER)If released to atmospheric pressure, one part liquid chlorine will expand to
about?
8-12" - (CORRECT ANSWER)Anaerobically digested sludge should be applied to a drying bed to a depth
of about?
Not to create a negative pressure in the anaerobic digester and to prevent coning of sludge - (CORRECT
ANSWER)Sludge from a digester should be slowly drawn to a drying bed in order to?
Recharge Water supply, keep saline out of groundwater stop ground Substance - (CORRECT
ANSWER)Direct aquifer recharge of treated effluent can be used to?
under new construction, new plant, not running yet - (CORRECT ANSWER)An exemption from filing
monthly effluent reports with the TCEQ may be obtained if?
Screens - (CORRECT ANSWER)A wastewater treatment plant would make use of ? to remove small
concentrations of dissolved organics from wastewater effluent
5.4 acres - (CORRECT ANSWER)The maximum design organic loading for stabilization ponds is 35 pounds
of BOD per acre per day. An industry wants to construct a facility with projected flow of 50,000 gpd and
2
(Verified Answers) | Latest Version | Already Graded A+
Primary Clarifiers - (CORRECT ANSWER)In an activated sludge treatment system, primary treatment
processes include the:
Removal of Inorganic material from grit - (CORRECT ANSWER)In a washing grit remover, the grit is
moved slowly by screw conveyors up an inclined channel in order to?
90% or above - (CORRECT ANSWER)An efficient primary clarifier is expected to remove ? of the influent
settleable solids.
Adequate DO at surface at all times - (CORRECT ANSWER)Proper operation of a facultative pond system
requires that:,
True - (CORRECT ANSWER)The amount of organic matter removed by a trickling filter is mostly
dependent on the recirculation ratio
Bulking - (CORRECT ANSWER)In an activated sludge treatment plant, a Sludge Volume Index (SVI) of 180
would indicate
Reseed The AB, Remove sludge from FC - (CORRECT ANSWER)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 - (CORRECT ANSWER)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 - (CORRECT
ANSWER)When nitrification takes place in the activated sludge process, facultative bacteria use
Primary clarifiers - (CORRECT ANSWER)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?
1
, Low C02 high Methane - (CORRECT ANSWER)One indication that an anaerobic digestion facility is
improving would be?
False - (CORRECT ANSWER)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 - (CORRECT ANSWER)Besides disinfection,
chlorination can be used in wastewater treatment processes to?
450ml - (CORRECT ANSWER)If released to atmospheric pressure, one part liquid chlorine will expand to
about?
8-12" - (CORRECT ANSWER)Anaerobically digested sludge should be applied to a drying bed to a depth
of about?
Not to create a negative pressure in the anaerobic digester and to prevent coning of sludge - (CORRECT
ANSWER)Sludge from a digester should be slowly drawn to a drying bed in order to?
Recharge Water supply, keep saline out of groundwater stop ground Substance - (CORRECT
ANSWER)Direct aquifer recharge of treated effluent can be used to?
under new construction, new plant, not running yet - (CORRECT ANSWER)An exemption from filing
monthly effluent reports with the TCEQ may be obtained if?
Screens - (CORRECT ANSWER)A wastewater treatment plant would make use of ? to remove small
concentrations of dissolved organics from wastewater effluent
5.4 acres - (CORRECT ANSWER)The maximum design organic loading for stabilization ponds is 35 pounds
of BOD per acre per day. An industry wants to construct a facility with projected flow of 50,000 gpd and
2
