WasteWater Operator Certification Study Guide Grade 1
1. Waste Water Sources & Characteristics:
What is the most common reason for a wastewater to contain intermittent
large amounts of sand, gravel, and grit?: storm events
2. Waste Water Sources & Characteristics:
Combined wastewater is defined as: sanitary wastewater and storm water runoff
3. Waste Water Sources & Characteristics:
In general, the solids content in wastewater is about: 0.1%
4. Waste Water Sources & Characteristics:
In general, what is the % of suspended solids in the total amount of solids:
30%
5. Waste Water Sources & Characteristics:
Generally, the % of dissolved solids in the amount of total solids is about:
70%
6. Waste Water Sources & Characteristics:
Which type of organisms would most probably be associated with poor
treatment or young biomass: amoebas
7. Waste Water Sources & Characteristics:
Which type of organisms would most probably be associated with very clear
plant effluent. low BOD and low amounts of suspended solids: stalked cilates
8. Basic Waste Water Treatment:
Aerobic bacteria will reproduce and live in an environment that contains only:
oxygen
, 9. Basic Waste Water Treatment:
Anaerobic bacteria will reproduce and live only in an environment that
completely lacks: free or dissolved oxygen
10. Basic Waste Water Treatment:
The biochemical oxygen demand (BOD) test usually has a specific time of: 5
days
11. Basic Waste Water Treatment:
An Imhoff cone measures: volume of settleable solids
12. Basic Waste Water Treatment:
Septic conditions are caused by: anaerobic bacteria
13. Basic Waste Water Treatment:
Scum is usually removed in the _____treatment stage: primary
14. Basic Waste Water Treatment:
When domestic wastewater enters natural waters, what species deplete most
of the oxygen: aerobic bacteria
15. Basic Waste Water Treatment:
Once the oxygen is depleted in a natural body of water, which organisms take
over?: anaerobic
16. Basic Waste Water Treatment:
The major gas produces by anaerobic decomposition is: methane
1. Waste Water Sources & Characteristics:
What is the most common reason for a wastewater to contain intermittent
large amounts of sand, gravel, and grit?: storm events
2. Waste Water Sources & Characteristics:
Combined wastewater is defined as: sanitary wastewater and storm water runoff
3. Waste Water Sources & Characteristics:
In general, the solids content in wastewater is about: 0.1%
4. Waste Water Sources & Characteristics:
In general, what is the % of suspended solids in the total amount of solids:
30%
5. Waste Water Sources & Characteristics:
Generally, the % of dissolved solids in the amount of total solids is about:
70%
6. Waste Water Sources & Characteristics:
Which type of organisms would most probably be associated with poor
treatment or young biomass: amoebas
7. Waste Water Sources & Characteristics:
Which type of organisms would most probably be associated with very clear
plant effluent. low BOD and low amounts of suspended solids: stalked cilates
8. Basic Waste Water Treatment:
Aerobic bacteria will reproduce and live in an environment that contains only:
oxygen
, 9. Basic Waste Water Treatment:
Anaerobic bacteria will reproduce and live only in an environment that
completely lacks: free or dissolved oxygen
10. Basic Waste Water Treatment:
The biochemical oxygen demand (BOD) test usually has a specific time of: 5
days
11. Basic Waste Water Treatment:
An Imhoff cone measures: volume of settleable solids
12. Basic Waste Water Treatment:
Septic conditions are caused by: anaerobic bacteria
13. Basic Waste Water Treatment:
Scum is usually removed in the _____treatment stage: primary
14. Basic Waste Water Treatment:
When domestic wastewater enters natural waters, what species deplete most
of the oxygen: aerobic bacteria
15. Basic Waste Water Treatment:
Once the oxygen is depleted in a natural body of water, which organisms take
over?: anaerobic
16. Basic Waste Water Treatment:
The major gas produces by anaerobic decomposition is: methane
