WASTEWATER TREATMENT CLASS B
TEST EXAM REVIEW TESTED
QUESTIONS ACCURATE SOLUTIONS
◉ Chapter ___ of the Texas Water Code is the state law controlling
water pollution and ___ authority to control discharges in Texas.
Answer: Chapter 26 and Texas Commission of Environmental
Quality
◉ The Texas Commission on Environmental Quality can revoke an
operator's license if the operator. Answer: causes permit violation,
falsifies records or neglects their duty
◉ If accidental discharge, bypass, or spill (SSO) of wastewater
occurs the responsible party MUST notify TCEQ regional offices
within ____ hours. Answer: 24
◉ Aerobic Bacteria require_____ in the water for their metabolism.
Answer: oxygen
◉ Anaerobic Bacteria _____ live with O2 present in the water for their
metabolism. Answer: cannot
,◉ Facultative Bacteria require__________in the water for their
metabolism. Answer: either aerobic or anaerobic conditions
◉ Chemical characteristics of sewage include. Answer: solids,
greases, dissolved oxygen, O2 Demand, pH, and gasses
◉ _________removes Total Suspended Solids (TSS). Answer: filtration
◉ Inorganic solids include. Answer: sand, grit and minerals
◉ Organic solids include. Answer: organic materials from plants,
animals or humans
◉ A good plant influent pH is about. Answer: 7.2
◉ Dangerous gases are produced during bacterial decomposition of
organics in wastewater. The main gasses are. Answer: Hydrogen
sulfide, carbon dioxide and methane
◉ The majority of Dissolved Oxygen in raw sewage comes from.
Answer: Potable Drinking Water
, ◉ Each person contributes approximately ______ lbs of BOD to the
system daily.. Answer: 0.17
◉ Sources of waste water include. Answer: domestic, storm water,
commercial, food processing, agricultural and industrial
◉ A sewer manhole provides access into the system for cleaning or
service. A manhole is located. Answer: at changes in alignment,
diameter, grade, direction and intersection
◉ New manholes must have an inside diameter of at least ______ feet
and the entry access must be at least ____inches.. Answer: 4 feet and
24 inches
◉ In the past ____ was used to construct manholes. This product is
prohibited for construction or grading today. Answer: brick and
mortar
◉ Verified clay and Poly Vinyl Chloride (PVC) are the most common
pipe materials used for sewer lines but other materials are available
such as. Answer: ductile iron, cast iron, acrylontrile butadiene
styrene (ABS) Concrete, polyethylene & asbestos concrete
◉ Whenever wastewater cannot flow to the treatment plant by _____
a _____ is typically used. Answer: gravity/ lift station
TEST EXAM REVIEW TESTED
QUESTIONS ACCURATE SOLUTIONS
◉ Chapter ___ of the Texas Water Code is the state law controlling
water pollution and ___ authority to control discharges in Texas.
Answer: Chapter 26 and Texas Commission of Environmental
Quality
◉ The Texas Commission on Environmental Quality can revoke an
operator's license if the operator. Answer: causes permit violation,
falsifies records or neglects their duty
◉ If accidental discharge, bypass, or spill (SSO) of wastewater
occurs the responsible party MUST notify TCEQ regional offices
within ____ hours. Answer: 24
◉ Aerobic Bacteria require_____ in the water for their metabolism.
Answer: oxygen
◉ Anaerobic Bacteria _____ live with O2 present in the water for their
metabolism. Answer: cannot
,◉ Facultative Bacteria require__________in the water for their
metabolism. Answer: either aerobic or anaerobic conditions
◉ Chemical characteristics of sewage include. Answer: solids,
greases, dissolved oxygen, O2 Demand, pH, and gasses
◉ _________removes Total Suspended Solids (TSS). Answer: filtration
◉ Inorganic solids include. Answer: sand, grit and minerals
◉ Organic solids include. Answer: organic materials from plants,
animals or humans
◉ A good plant influent pH is about. Answer: 7.2
◉ Dangerous gases are produced during bacterial decomposition of
organics in wastewater. The main gasses are. Answer: Hydrogen
sulfide, carbon dioxide and methane
◉ The majority of Dissolved Oxygen in raw sewage comes from.
Answer: Potable Drinking Water
, ◉ Each person contributes approximately ______ lbs of BOD to the
system daily.. Answer: 0.17
◉ Sources of waste water include. Answer: domestic, storm water,
commercial, food processing, agricultural and industrial
◉ A sewer manhole provides access into the system for cleaning or
service. A manhole is located. Answer: at changes in alignment,
diameter, grade, direction and intersection
◉ New manholes must have an inside diameter of at least ______ feet
and the entry access must be at least ____inches.. Answer: 4 feet and
24 inches
◉ In the past ____ was used to construct manholes. This product is
prohibited for construction or grading today. Answer: brick and
mortar
◉ Verified clay and Poly Vinyl Chloride (PVC) are the most common
pipe materials used for sewer lines but other materials are available
such as. Answer: ductile iron, cast iron, acrylontrile butadiene
styrene (ABS) Concrete, polyethylene & asbestos concrete
◉ Whenever wastewater cannot flow to the treatment plant by _____
a _____ is typically used. Answer: gravity/ lift station
