The waste in our wastewater | Kimberly Cole | TEDxStLouis

TL;DR

Wastewater contains significant pollutants that affect water resources and public health.

Transcript

[Applause] I get to see things that most people never get to see I work as an environmental engineer for more than 20 municipalities that have manufacturing facilities or industries that make things such as cars food and electronics I evaluate data for these communities to help them regulate industrial Wastewater and tonight I want to use what I se... Read More

Key Insights

• 💦 Wastewater treatment plants serve to remove harmful pollutants before water re-enters natural bodies, highlighting the interconnectedness of our water systems.
• 💦 A significant disparity exists between household water usage and industrial consumption, with industries having more complex wastewater treatment needs.
• 🧑‍⚕️ Microorganisms in wastewater treatment are critical for breaking down waste, but their health is jeopardized by hazardous chemicals from industrial sources.
• 💦 Emerging contaminants like PFAS present ongoing challenges in water safety, necessitating awareness and regulation in industrial practices.
• 🚾 The phrase "toilet to tap" encapsulates a new mindset prioritizing water reuse, emphasizing the need for public education on water resources.
• 💦 Individual choices in consumption and waste disposal significantly influence the health of wastewater systems and overall water quality.
• 🤕 Aging infrastructure and an experienced workforce present challenges for public water systems that require immediate attention and funding.

Questions & Answers

Q: What is wastewater, and why is it important to understand its management?

Wastewater refers to used water from various sources, including households and industries, that contains various pollutants. Understanding its management is crucial because it informs how we treat and clean water before it re-enters our rivers and can affect public health and environmental sustainability.

Q: How do microorganisms play a role in wastewater treatment?

Microorganisms are essential in wastewater treatment as they consume organic waste, particularly human waste, turning it into simpler substances. These "bugs" thrive on specific waste types, and their health is vital for the successful breakdown of pollutants. If they are harmed by toxic substances, the entire treatment process can fail.

Q: Can you explain the relationship between water usage in households versus industries?

Households only account for less than 10% of the water supply used, with the remaining 90% utilized by agriculture and industries. Industries often use substantial amounts of water to produce goods, which directly correlates to the amount of wastewater they generate, thus posing further challenges for wastewater management.

Q: What are PFAS, and why are they concerning for water quality?

PFAS, or per- and polyfluoroalkyl substances, are man-made chemicals used in many everyday products for their water- and grease-repellent properties. They are concerning because they do not break down naturally, accumulate in the environment, and pose health risks, leading to regulatory scrutiny.

Q: What steps can individuals take to minimize their impact on wastewater systems?

Individuals can help by being conscious consumers, avoiding flushing non-biodegradable items, and minimizing food waste, such as grease, going down the drain. Additionally, supporting environmentally responsible brands can reduce pollutants entering wastewater from the manufacturing process.

Q: Why is public support critical for the future of water systems?

Public support is vital for funding the necessary upgrades to aging water infrastructure and developing advanced treatment processes. Engaging communities, especially young people, in discussions about water safety is crucial to address challenges posed by pollutants and ensure sustainable practices.

Q: What are the future directions for wastewater management?

Future wastewater management focuses on creating circular systems that recycle and reuse water more efficiently. Innovative designs aim to facilitate the process of treating wastewater so it can be returned directly to water supply systems, enhancing sustainability in our water cycle.

Summary & Key Takeaways

• The speaker is an environmental engineer working with municipalities to evaluate industrial wastewater, highlighting the importance of understanding how our water is processed and returned to nature.

• Wastewater treatment involves microorganisms that break down waste; however, certain pollutants from industries can harm these organisms, leading to ineffective treatment processes.

• Emerging pollutants like PFAS pose significant challenges, as they do not decompose easily during wastewater treatment and can end up contaminating drinking water sources.