TX Class C Wastewater Treatment
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Preliminary Treatment ✔✔the 1st stage of sewage treatment where large debris, such as sticks,
grit, and rags pas through a screen followed by a grit chamber, where the flow of water is slowed
enough to allow for sedimentation.
What stage of treatment is grit removal usually accomplished in? ✔✔preliminary treatment
Rotating Biological Contactor ✔✔a type of biological secondary treatment process
How are protozoa (cause of amoebic dysentery) destroyed? ✔✔disinfection
Other than stream discharge, what are other ways to dispose of effluent wastewater? ✔✔aquifer
recharge, evaporation in a pond, and application to farm land by irrigation
Clean Water Act ✔✔gives the basic structure for regulating discharges of pollutants into the
waters of the United States
,Texas Water Code ✔✔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?
✔✔TCEQ
Water quality fees may be as high as ____________ per permit? ✔✔$115,000
Administrative penalties, up to __________ per day for each violation, may be assessed against
any violator. ✔✔$25,000
Every city with more than ________ in population needs to establish a water pollution control
program and hire qualified personnel to administer it. ✔✔10,000
State law requires that reports are to be submitted no later than the ________th day of the
following month. ✔✔20
,What are major surface waters classified as for the purposes of water quality management and
designation of site-specific standards? ✔✔segments
Inflow ✔✔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?
✔✔100
How much BOD will each person contribute to the wastewater treatment plant each day?
✔✔0.17
Cause of septic wastewater ✔✔bacterial action
Classifications of solids in wastewater ✔✔fixed/ash, suspended/dissolved, organic/inorganic
Organic compounds in wastewater include ✔✔carbon, hydrogen and oxygen (animal and
vegetable in nature)
, Type of organic matter present in wastewater ✔✔proteins
BOD is a measure of what? ✔✔oxygen used up
Ways that oxygen can be depleted in streams ✔✔untreated waste discharges, algae masses at
night, and high BOD in the effluent
A gas found in treatment systems that is NOT dangerous ✔✔dissolved oxygen
Cycles of decay include ✔✔carbon, nitrogen and sulfur
A flow totalizer is required when the plant design flow is more than ✔✔0.5 MGD
Non-hazardous wastes include ✔✔chlorides, alkalinity, color, phosphorous and iron
Hazardous wastes include ✔✔cyanide, sulfides, organics and gasoline
License Question and Answers 100%
Pass
Preliminary Treatment ✔✔the 1st stage of sewage treatment where large debris, such as sticks,
grit, and rags pas through a screen followed by a grit chamber, where the flow of water is slowed
enough to allow for sedimentation.
What stage of treatment is grit removal usually accomplished in? ✔✔preliminary treatment
Rotating Biological Contactor ✔✔a type of biological secondary treatment process
How are protozoa (cause of amoebic dysentery) destroyed? ✔✔disinfection
Other than stream discharge, what are other ways to dispose of effluent wastewater? ✔✔aquifer
recharge, evaporation in a pond, and application to farm land by irrigation
Clean Water Act ✔✔gives the basic structure for regulating discharges of pollutants into the
waters of the United States
,Texas Water Code ✔✔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?
✔✔TCEQ
Water quality fees may be as high as ____________ per permit? ✔✔$115,000
Administrative penalties, up to __________ per day for each violation, may be assessed against
any violator. ✔✔$25,000
Every city with more than ________ in population needs to establish a water pollution control
program and hire qualified personnel to administer it. ✔✔10,000
State law requires that reports are to be submitted no later than the ________th day of the
following month. ✔✔20
,What are major surface waters classified as for the purposes of water quality management and
designation of site-specific standards? ✔✔segments
Inflow ✔✔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?
✔✔100
How much BOD will each person contribute to the wastewater treatment plant each day?
✔✔0.17
Cause of septic wastewater ✔✔bacterial action
Classifications of solids in wastewater ✔✔fixed/ash, suspended/dissolved, organic/inorganic
Organic compounds in wastewater include ✔✔carbon, hydrogen and oxygen (animal and
vegetable in nature)
, Type of organic matter present in wastewater ✔✔proteins
BOD is a measure of what? ✔✔oxygen used up
Ways that oxygen can be depleted in streams ✔✔untreated waste discharges, algae masses at
night, and high BOD in the effluent
A gas found in treatment systems that is NOT dangerous ✔✔dissolved oxygen
Cycles of decay include ✔✔carbon, nitrogen and sulfur
A flow totalizer is required when the plant design flow is more than ✔✔0.5 MGD
Non-hazardous wastes include ✔✔chlorides, alkalinity, color, phosphorous and iron
Hazardous wastes include ✔✔cyanide, sulfides, organics and gasoline
