Presentation on theme: "Purification of Water. Water is an integral part of our daily lives ● We are made up of water ● We need water to drink, clean, and grow food ● The average."— Presentation transcript:
Purification of Water
Water is an integral part of our daily lives ● We are made up of water ● We need water to drink, clean, and grow food ● The average American uses 176 gallons of water daily ● That amounts to a lot of wastewater...
What is wastewater? ● Used water ● The water that goes down our drains contains human waste, food, oils, soaps, and chemicals ● Water used by homes, industries, and businesses must be treated before it is released back into the environment
Solution? ● Treatment plants reduce pollutants in wastewater to a manageable level
The Process ● The goal: remove as much solids as possible before remaining water discharged back into environment ● Primary treatment: removes 60% of solids ● Secondary treatment: removes more than 90% of solids
Why treat wastewater? ● Plants and animals that live in or near water need clean water to survive ● Quality of Life ● Health
Problem: Ammonia ● Widely used as a cleaning agent in domestic and industrial processes ● Ends up in wastewater and must be treated ● It's difficult to remove it all!
What is Ammonia? ● One of the most commonly produced industrial chemical in the US ● Toxic at high levels! ● Death of animals, birds, fish, plants
Effects on the Environment ● Eutrophication ● Buildup of nutrients in water = more plant growth = less oxygen in the water ● Death of aquatic life ● Changes in Ecosystems ● Weeds may outcompete native plants ● May lead to extinction of native or weaker species
Effects on the Environment ● When ammonia combines with emissions from factories or cars, they form particles that contribute to smog ● Smog leads to an increased rate of respiratory and heart diseases
Solution? ● Ammonia oxidizing bacteria!!
What are Ammonia Oxidizing Bacteria (AOBs)? ● AOBs are widespread in soil and water ● They are found in high numbers where large amounts of ammonia are present (like in wastewater treatment plants!)
What do they do? ● AOBs convert ammonia to nitrite ● Nitrates are more environmentally friendly than ammonia!
What do they do? ● This process, process called nitrification, is necessary for the maintenance of a healthy ocean and a clean environment! Hooray!!
How can I help? Learn more about water purification plants in your area – take a tour! Spread your knowledge and initiative to others Pick up trash