WasteWater Operator Certification
Study Guide Grade 1
with correct answers | Graded A+ |
Updated Version
QUESTIONS AND ANSWERS
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 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:
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:
Septic conditions are caused by. ANSWER -anaerobic bacteria
Basic WasteWater Treatment:
, Scum is usually removed in the _____treatment stage. ANSWER -primary
Basic WasteWater Treatment:
When domestic wastewater enters natural waters, what species deplete most of the oxygen.
ANSWER -aerobic bacteria
Basic WasteWater Treatment:
Once the oxygen is depleted in a natural body of water, which organisms take over?.
ANSWER -anaerobic
Basic WasteWater Treatment:
The major gas produces by anaerobic decomposition is. ANSWER -methane
Wastewater Treatment Facilities:
Another name for promary treatment is. ANSWER -sedimentation
Wastewater Treatment Facilities:
Digester gas is_______when mixed with air the the proper proportions. ANSWER -
extremely explosive
Wastewater Treatment Facilities:
A pond that is used to treat raw wastewater is called. ANSWER -a waste stabilization pond
Wastewater Treatment Facilities:
Study Guide Grade 1
with correct answers | Graded A+ |
Updated Version
QUESTIONS AND ANSWERS
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 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:
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:
Septic conditions are caused by. ANSWER -anaerobic bacteria
Basic WasteWater Treatment:
, Scum is usually removed in the _____treatment stage. ANSWER -primary
Basic WasteWater Treatment:
When domestic wastewater enters natural waters, what species deplete most of the oxygen.
ANSWER -aerobic bacteria
Basic WasteWater Treatment:
Once the oxygen is depleted in a natural body of water, which organisms take over?.
ANSWER -anaerobic
Basic WasteWater Treatment:
The major gas produces by anaerobic decomposition is. ANSWER -methane
Wastewater Treatment Facilities:
Another name for promary treatment is. ANSWER -sedimentation
Wastewater Treatment Facilities:
Digester gas is_______when mixed with air the the proper proportions. ANSWER -
extremely explosive
Wastewater Treatment Facilities:
A pond that is used to treat raw wastewater is called. ANSWER -a waste stabilization pond
Wastewater Treatment Facilities:
