WASTEWATER COLLECTIONS III EXAMINATION 2026
EXAM QUESTIONS AND SOLUTIONS RATED A+
✔✔impeller - ✔✔Device used to pump and force water under pressure through a
steering nozzle at the rear of the vessel
✔✔Centrifugal pump - ✔✔A non-positive displacement pump that moves a varying
amount of fluid with each rotation using an impeller blade
✔✔Submersible pump - ✔✔Pump that is immersed in the fluid it is pumping
✔✔A pump delivering less than the expected rate of discharge. What can cause this to
happen? - ✔✔Discharge head too high
✔✔What is a poly pig? - ✔✔A bullet shaped object passed through a force main
✔✔What tools are used with power rodders? - ✔✔Spring blades
✔✔MSDS - ✔✔Material Safety Data Sheet
✔✔Schedule 40 refers to pipe? - ✔✔wall thickness
✔✔What does PH stand for? - ✔✔potential hydrogen
✔✔PH is a measure of what in water? - ✔✔Hydrogen Ion activity
✔✔CIPP - ✔✔Cured In Place Pipe
✔✔pH of 7 is considered what? - ✔✔neutral
✔✔pH less than 7 - ✔✔acidic
✔✔pH greater than 7 - ✔✔alkaline
✔✔BOD - ✔✔biological oxygen demand, amount of dissolved oxygen needed by
aerobic decomposers to break down organic materials
✔✔COD - ✔✔The amount of chemical oxidant required to breakdown the wastes, also
an indicator of the concentration of organics
✔✔The amount of energy in feet required to overcome resistance to flow in a pipe is
called? - ✔✔Friction head
EXAM QUESTIONS AND SOLUTIONS RATED A+
✔✔impeller - ✔✔Device used to pump and force water under pressure through a
steering nozzle at the rear of the vessel
✔✔Centrifugal pump - ✔✔A non-positive displacement pump that moves a varying
amount of fluid with each rotation using an impeller blade
✔✔Submersible pump - ✔✔Pump that is immersed in the fluid it is pumping
✔✔A pump delivering less than the expected rate of discharge. What can cause this to
happen? - ✔✔Discharge head too high
✔✔What is a poly pig? - ✔✔A bullet shaped object passed through a force main
✔✔What tools are used with power rodders? - ✔✔Spring blades
✔✔MSDS - ✔✔Material Safety Data Sheet
✔✔Schedule 40 refers to pipe? - ✔✔wall thickness
✔✔What does PH stand for? - ✔✔potential hydrogen
✔✔PH is a measure of what in water? - ✔✔Hydrogen Ion activity
✔✔CIPP - ✔✔Cured In Place Pipe
✔✔pH of 7 is considered what? - ✔✔neutral
✔✔pH less than 7 - ✔✔acidic
✔✔pH greater than 7 - ✔✔alkaline
✔✔BOD - ✔✔biological oxygen demand, amount of dissolved oxygen needed by
aerobic decomposers to break down organic materials
✔✔COD - ✔✔The amount of chemical oxidant required to breakdown the wastes, also
an indicator of the concentration of organics
✔✔The amount of energy in feet required to overcome resistance to flow in a pipe is
called? - ✔✔Friction head
