Key Vocab
This term refers to the wastewater that flows into a treatment plant.
What is Influent?
Pretreatment involves ________________ out large debris, such as sticks, plastic, or rags.
What is screening?
Debris from the grit tank is is disposed of at ______________
What is a landfill?
This chemical is commonly added at the very end of the process to kill harmful pathogens organisms.
Chlorine
This stage allows for the physical separation of solids in a settling tank where water is held for several hours
What is Primary Treatment?
This term refers to the treated water that flows out of a treatment plant into the environment.
What is Effluent?
The first stage of sewage treatment.
What is Pretreatment? (Or Preliminary)
Secondary treatment relies on these microscopic living things to eat organic waste.
What are Bacteria (or Micro-organisms)?
Solids collected during the treatments go here to be processed.
What is a digester?
Wastewater from toilets containing human waste is called "Black Water," while water from sinks, showers, and laundry is known as this.
What is Grey Water
Used water from homes (toilets, sinks) and businesses that enters the sewer system.
What is Sanitary Sewage?
Is what settles at the top of tanks in primary treatment
What is scum and grease?
This gas is pumped through the water to help bacteria survive and eat waste faster.
What is Oxygen (or Air)?
The final destination for treated effluent is this body of water.
Lake Ontario
Used primarily in rural areas, this large underground container treats wastewater by letting solids settle out before the liquid flows into a drainage field.
What is a Septic Tank?
Water from rain or melting snow that flows off roofs and roads, usually into a separate drain system.
What is Stormwater?
This is the general term for the solids that settle to the bottom of the tanks during Primary and Secondary treatment.
What is Sludge?
The process of bacterial digestion of sludge and organic matter in the secondary treatment stage.
Micro-organisms turn solids into this gas to produce electricity.
What is Methane Gas?
The use of plants to absorb pollutants and clean up contaminated water.
What is Phytoremediation?