INDUSTRIAL WASTEWATER OPERATOR
BOARD EVALUATION 2026 GUARANTEED
PASS ANSWERS GRADED A+
● Wet weather can cause hydraulic overloading of a wastewater
treatment plant.. Answer: True
● 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
BOARD EVALUATION 2026 GUARANTEED
PASS ANSWERS GRADED A+
● Wet weather can cause hydraulic overloading of a wastewater
treatment plant.. Answer: True
● 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
