WASTEWATER TREATMENT OPERATOR EXAM
SCRIPT TESTED QUESTIONS VERIFIED SOLUTIONS
◉ There is no distinction between terms "wastewater disposal" and
"wastewater treatment" because both terms have the same meaning.
Answer: False
◉ The common unit of power or rate of doing work is horsepower.
This is equal to 746 ft-lbs/min. Answer: False
◉ Generally sulfide odors are not produced under aerobic
conditions. Answer: True
◉ Dissolved oxygen in wastewater may be referred to as free or
molecular oxygen, or usually as DO. Answer: True
◉ Gas bubbles rising to the surface in a primary clarifier are
normally an indication that the sludge in the unit is undergoing
proper settling.. Answer: False
◉ Wastewater with a pH of 2.0 to 4.0 could be too "basic" for
biological treatment.. Answer: False
, ◉ Most of the colloidal and dissolved matter in wastewater will be
removed in the primary clarifiers for the average well-designed,
efficiently operated wastewater treatment facility.. Answer: False
◉ Hydrogen sulfide, in addition to creating an odor nuisance, can be
an explosion hazard when mixed with air in certain concentrations.
Answer: True
◉ Prior to working in a drained anaerobic digester, confined space
entry permits must be prepared.. Answer: True
◉ Excessive vibration in pumps and blowers can indicate potential
bearing failure.. Answer: True
◉ Washing of concrete and metal surfaces exposed to splashing
from wastewater is performed to reduce odors and corrosion..
Answer: True
◉ "Pond treatment" means processing in a pond in which biological
oxidation of organic matter is effected by natural or artificially
accelerated transfer of oxygen to the water. Answer: True
SCRIPT TESTED QUESTIONS VERIFIED SOLUTIONS
◉ There is no distinction between terms "wastewater disposal" and
"wastewater treatment" because both terms have the same meaning.
Answer: False
◉ The common unit of power or rate of doing work is horsepower.
This is equal to 746 ft-lbs/min. Answer: False
◉ Generally sulfide odors are not produced under aerobic
conditions. Answer: True
◉ Dissolved oxygen in wastewater may be referred to as free or
molecular oxygen, or usually as DO. Answer: True
◉ Gas bubbles rising to the surface in a primary clarifier are
normally an indication that the sludge in the unit is undergoing
proper settling.. Answer: False
◉ Wastewater with a pH of 2.0 to 4.0 could be too "basic" for
biological treatment.. Answer: False
, ◉ Most of the colloidal and dissolved matter in wastewater will be
removed in the primary clarifiers for the average well-designed,
efficiently operated wastewater treatment facility.. Answer: False
◉ Hydrogen sulfide, in addition to creating an odor nuisance, can be
an explosion hazard when mixed with air in certain concentrations.
Answer: True
◉ Prior to working in a drained anaerobic digester, confined space
entry permits must be prepared.. Answer: True
◉ Excessive vibration in pumps and blowers can indicate potential
bearing failure.. Answer: True
◉ Washing of concrete and metal surfaces exposed to splashing
from wastewater is performed to reduce odors and corrosion..
Answer: True
◉ "Pond treatment" means processing in a pond in which biological
oxidation of organic matter is effected by natural or artificially
accelerated transfer of oxygen to the water. Answer: True
