WASTEWATER TREATMENT CLASS B
TEST ACTUAL EXAM COMPLETE
QUESTIONS 100 PERCENT CORRECT
◉ What stage of treatment is grit removal usually accomplished in?
Answer: preliminary treatment
◉ Rotating Biological Contactor Answer: a type of biological
secondary treatment process
◉ How are protozoa (cause of amoebic dysentery) destroyed?
Answer: disinfection
◉ Other than stream discharge, what are other ways to dispose of
effluent wastewater? Answer: aquifer recharge, evaporation in a
pond, and application to farm land by irrigation
◉ Clean Water Act Answer: gives the basic structure for regulating
discharges of pollutants into the waters of the United States
◉ Texas Water Code Answer: gives the TCEQ jurisdiction over
discharges of waste into or adjacent to water in the state
,◉ Who reviews plans and specifications for new construction
projects before construction begins? Answer: TCEQ
◉ Water quality fees may be as high as ____________ per permit?
Answer: $115,000
◉ Administrative penalties, up to __________ per day for each
violation, may be assessed against any violator. Answer: $25,000
◉ Every city with more than ________ in population needs to establish
a water pollution control program and hire qualified personnel to
administer it. Answer: 10,000
◉ State law requires that reports are to be submitted no later than
the ________th day of the following month. Answer: 20
◉ What are major surface waters classified as for the purposes of
water quality management and designation of site-specific
standards? Answer: segments
◉ Inflow Answer: direct discharges of storm water or surface water
into a wastewater collection system (storm drains, roof gutters, yard
drains, basement sump pumps and broken manholes and
wastewater lines).
,◉ How many gallons per day will each person contribute to the
wastewater treatment plant? Answer: 100
◉ How much BOD will each person contribute to the wastewater
treatment plant each day? Answer: 0.17
◉ Cause of septic wastewater Answer: bacterial action
◉ Classifications of solids in wastewater Answer: fixed/ash,
suspended/dissolved, organic/inorganic
◉ Organic compounds in wastewater include Answer: carbon,
hydrogen and oxygen (animal and vegetable in nature)
◉ Type of organic matter present in wastewater Answer: proteins
◉ BOD is a measure of what? Answer: oxygen used up
◉ Ways that oxygen can be depleted in streams Answer: untreated
waste discharges, algae masses at night, and high BOD in the effluent
◉ A gas found in treatment systems that is NOT dangerous Answer:
dissolved oxygen
, ◉ Cycles of decay include Answer: carbon, nitrogen and sulfur
◉ A flow totalizer is required when the plant design flow is more
than Answer: 0.5 MGD
◉ Non-hazardous wastes include Answer: chlorides, alkalinity, color,
phosphorous and iron
◉ Hazardous wastes include Answer: cyanide, sulfides, organics and
gasoline
◉ Synergistic Effect Answer: reaction between waste streams
◉ How many cubic feet of screenings per million gallons of
wastewater will coarse screens remove? Answer: 0.5 to 6.0
◉ Preaeration benefits Answer: freshen wastewater, scour gases and
remove grease
◉ Main purpose of sedimentation tank Answer: allow scum to rise
and solids to settle under quiescent (low velocity) conditions
TEST ACTUAL EXAM COMPLETE
QUESTIONS 100 PERCENT CORRECT
◉ What stage of treatment is grit removal usually accomplished in?
Answer: preliminary treatment
◉ Rotating Biological Contactor Answer: a type of biological
secondary treatment process
◉ How are protozoa (cause of amoebic dysentery) destroyed?
Answer: disinfection
◉ Other than stream discharge, what are other ways to dispose of
effluent wastewater? Answer: aquifer recharge, evaporation in a
pond, and application to farm land by irrigation
◉ Clean Water Act Answer: gives the basic structure for regulating
discharges of pollutants into the waters of the United States
◉ Texas Water Code Answer: gives the TCEQ jurisdiction over
discharges of waste into or adjacent to water in the state
,◉ Who reviews plans and specifications for new construction
projects before construction begins? Answer: TCEQ
◉ Water quality fees may be as high as ____________ per permit?
Answer: $115,000
◉ Administrative penalties, up to __________ per day for each
violation, may be assessed against any violator. Answer: $25,000
◉ Every city with more than ________ in population needs to establish
a water pollution control program and hire qualified personnel to
administer it. Answer: 10,000
◉ State law requires that reports are to be submitted no later than
the ________th day of the following month. Answer: 20
◉ What are major surface waters classified as for the purposes of
water quality management and designation of site-specific
standards? Answer: segments
◉ Inflow Answer: direct discharges of storm water or surface water
into a wastewater collection system (storm drains, roof gutters, yard
drains, basement sump pumps and broken manholes and
wastewater lines).
,◉ How many gallons per day will each person contribute to the
wastewater treatment plant? Answer: 100
◉ How much BOD will each person contribute to the wastewater
treatment plant each day? Answer: 0.17
◉ Cause of septic wastewater Answer: bacterial action
◉ Classifications of solids in wastewater Answer: fixed/ash,
suspended/dissolved, organic/inorganic
◉ Organic compounds in wastewater include Answer: carbon,
hydrogen and oxygen (animal and vegetable in nature)
◉ Type of organic matter present in wastewater Answer: proteins
◉ BOD is a measure of what? Answer: oxygen used up
◉ Ways that oxygen can be depleted in streams Answer: untreated
waste discharges, algae masses at night, and high BOD in the effluent
◉ A gas found in treatment systems that is NOT dangerous Answer:
dissolved oxygen
, ◉ Cycles of decay include Answer: carbon, nitrogen and sulfur
◉ A flow totalizer is required when the plant design flow is more
than Answer: 0.5 MGD
◉ Non-hazardous wastes include Answer: chlorides, alkalinity, color,
phosphorous and iron
◉ Hazardous wastes include Answer: cyanide, sulfides, organics and
gasoline
◉ Synergistic Effect Answer: reaction between waste streams
◉ How many cubic feet of screenings per million gallons of
wastewater will coarse screens remove? Answer: 0.5 to 6.0
◉ Preaeration benefits Answer: freshen wastewater, scour gases and
remove grease
◉ Main purpose of sedimentation tank Answer: allow scum to rise
and solids to settle under quiescent (low velocity) conditions
