Wastewater Operator (class 1)question and answers 2023 rated A+

Wastewater Operator (class 1)question and answers 2023 rated A+What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? - correct answer Storm events Combined wastewater is defined as - correct answer Sanitary wastewater and stormwater runoff In general, the solids content in wastewater is about - correct answer 0.1% In general, what is the percentage of suspended solids in the total amount of solids? - correct answer 30% Generally, the percentage of dissolved solids in the amount of total solids is about - correct answer 70% Which type of organisms would most probably be associated with poor treatment or young biomass? - correct answer 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? - correct answer Stalked Ciliates Aerobic bacteria will reproduce and live in an environment that contains only - correct answer Oxygen Anaerobic bacteria will reproduce and live only in an environment that completely lacks - correct answer Free or dissolved oxygen (DO) The biochemical oxygen demand (*BOD) test usually has a specific time of - correct answer 5 days