WorksheetsWorld Toilet Day - Woodward Wastewater Treatment Plant
Total questions: 13
Worksheet time: 17mins
“Wastewater” is all of the dirty water that goes down your toilets and drains. Where does wastewater go to be treated (a.k.a. cleaned)?
Woodward Wastewater Treatment Plant
Hamilton Museum of Steam and Technology
How does the wastewater get to the wastewater treatment plant?
Sewers (wastewater collection system)
Trucks
Tunnels
After initially being pumped, (a) moves the wastewater through the rest of the treatment plant.
During pre-treatment, a chemical is added to remove phosphorus from the wastewater. This is important because too much phosphorus can cause __________ in Hamilton Harbour which has a negative impact on plants and wildlife.
Waves
Drought
Algae blooms
Acidic water
At the treatment plant, clarifiers remove solids from the liquid wastewater which are treated separately. Solids sink to the bottom of the clarifiers and fats, oil and grease float to the top. These things are referred to as:
Sludge and scum
Sludge and slime
Slime and scum
Aeration basins add (a) to the wastewater. Adding this is important because bacteria need it to break down organic material during the treatment process and it helps aquatic life thrive.
In the near future, an extra level of treatment will be added to the plant called “tertiary treatment”. This extra treatment will help remove more _________________________ and phosphorous from the wastewater.
rocks
oils and fats
suspended solids
hygienic products
During the summer months, chlorine is added and then removed from the wastewater to remove potentially harmful bacteria like ______________.
COVID-19
Listeria
Influenza
E. Coli
Once wastewater is fully treated it is called “final effluent” and it gets released back to the environment into (a) .
The solids that were removed from the wastewater are thickened and placed into an anaerobic digester. Anaerobic bacteria in the digesters breakdown biodegradable material and destroy pathogens. Anerobic means:
with oxygen
without oxygen
exercise
The large globe that you can see from the highway stores a byproduct of solids treatment called _________________________. This is purified into natural gas and used to generate electricity.
methane
carbon dioxide
hydrogen
helium
The biosolids are dewatered into “cake” which can be used as fertilizer. The City of Hamilton generates an average of 100 tonnes of cake every day. That’s the equivalent of (a) elephants!
The final effluent leaving the wastewater treatment is the largest single source of processed water entering Hamilton Harbour. What can we do at home to ensure we protect the health of our harbour?
