WASTEWATER TREATMENT OPERATOR CERTIFICATION
EXAM 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A
WasteWater Sources & Characteristics:
What is the most common reason for a wastewater to contain
intermittent large amounts of sand, gravel, and grit? - ANSWER-
storm events
WasteWater Sources & Characteristics:
Combined wastewater is defined as - ANSWER-sanitary
wastewater and stormwater runoff
WasteWater Sources & Characteristics:
In general, the solids content in wastewater is about - ANSWER-
0.1%
WasteWater Sources & Characteristics:
In general, what is the % of suspended solids in the total
amount of solids - ANSWER-30%
,WASTEWATER TREATMENT OPERATOR CERTIFICATION
EXAM 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A
WasteWater Sources & Characteristics:
Generally, the % of dissolved solids in the amount of total solids
is about - ANSWER-70%
WasteWater Sources & Characteristics:
Which type of organisms would most probably be associated
with poor treatment or young biomass - ANSWER-amoebas
WasteWater Sources & Characteristics:
Which type of organisms would most probably be associated
with very clear plant effluent. low BOD and low amounts of
suspended solids - ANSWER-stalked cilates
Basic WasteWater Treatment:
, WASTEWATER TREATMENT OPERATOR CERTIFICATION
EXAM 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A
Aerobic bacteria will reproduce and live in an environment that
contains only - ANSWER-oxygen
Basic WasteWater Treatment:
Anaerobic bacteria will reproduce and live only in an
environment that completely lacks - ANSWER-free or dissolved
oxygen
Basic WasteWater Treatment:
The biochemical oxygen demand (BOD) test usually has a
specific time of - ANSWER-5 days
Basic WasteWater Treatment:
An Imhoff cone measures - ANSWER-volume of settleable solids
Basic WasteWater Treatment:
EXAM 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A
WasteWater Sources & Characteristics:
What is the most common reason for a wastewater to contain
intermittent large amounts of sand, gravel, and grit? - ANSWER-
storm events
WasteWater Sources & Characteristics:
Combined wastewater is defined as - ANSWER-sanitary
wastewater and stormwater runoff
WasteWater Sources & Characteristics:
In general, the solids content in wastewater is about - ANSWER-
0.1%
WasteWater Sources & Characteristics:
In general, what is the % of suspended solids in the total
amount of solids - ANSWER-30%
,WASTEWATER TREATMENT OPERATOR CERTIFICATION
EXAM 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A
WasteWater Sources & Characteristics:
Generally, the % of dissolved solids in the amount of total solids
is about - ANSWER-70%
WasteWater Sources & Characteristics:
Which type of organisms would most probably be associated
with poor treatment or young biomass - ANSWER-amoebas
WasteWater Sources & Characteristics:
Which type of organisms would most probably be associated
with very clear plant effluent. low BOD and low amounts of
suspended solids - ANSWER-stalked cilates
Basic WasteWater Treatment:
, WASTEWATER TREATMENT OPERATOR CERTIFICATION
EXAM 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A
Aerobic bacteria will reproduce and live in an environment that
contains only - ANSWER-oxygen
Basic WasteWater Treatment:
Anaerobic bacteria will reproduce and live only in an
environment that completely lacks - ANSWER-free or dissolved
oxygen
Basic WasteWater Treatment:
The biochemical oxygen demand (BOD) test usually has a
specific time of - ANSWER-5 days
Basic WasteWater Treatment:
An Imhoff cone measures - ANSWER-volume of settleable solids
Basic WasteWater Treatment:
