Wastewater Operator (class 1) 100%
Pass
What is the most common reason for a wastewater to contain intermittent large amounts of sand,
gravel, and grit? ✔✔Storm events
Combined wastewater is defined as ✔✔Sanitary wastewater and stormwater runoff
In general, the solids content in wastewater is about ✔✔0.1%
In general, what is the percentage of suspended solids in the total amount of solids? ✔✔30%
Generally, the percentage of dissolved solids in the amount of total solids is about ✔✔70%
Which type of organisms would most probably be associated with poor treatment or young
biomass? ✔✔Amoebas
Which type of organisms would most probably be associated with very clear plant effluent, low
biochemical oxygen demand (BOD), and low amounts of suspended solids? ✔✔Stalked Ciliates
Pass
What is the most common reason for a wastewater to contain intermittent large amounts of sand,
gravel, and grit? ✔✔Storm events
Combined wastewater is defined as ✔✔Sanitary wastewater and stormwater runoff
In general, the solids content in wastewater is about ✔✔0.1%
In general, what is the percentage of suspended solids in the total amount of solids? ✔✔30%
Generally, the percentage of dissolved solids in the amount of total solids is about ✔✔70%
Which type of organisms would most probably be associated with poor treatment or young
biomass? ✔✔Amoebas
Which type of organisms would most probably be associated with very clear plant effluent, low
biochemical oxygen demand (BOD), and low amounts of suspended solids? ✔✔Stalked Ciliates
