10 Questions
Which material was found to improve properties, especially nonflammability, in the 1930s to 1950s?
Halogenation
What event in 1962 brought attention to the hazards of hazardous waste?
Rachel Carson's 'Silent Spring'
Which material was banned in 1972 due to its harmful effects?
DDT
Which organization was created in 1970 to address hazardous waste issues?
US EPA
Which material is a part of hazardous waste and is used in the manufacture of products?
E Waste
Which of the following is NOT a source of wastewater?
Treated water for drinking
Which processes are part of the self-purification ability of water?
Dilution, sedimentation, filtering, and aeration
What is the objective of wastewater treatment?
To make wastewater safe for humans and the environment
What are the two main processes that represent the self-purification capacity of river water?
Deoxygenation and aeration
What happens to dissolved oxygen levels in a lake or stream if too much untreated sewage or organic matter is added?
They decrease
Study Notes
Development of Materials and Regulations
- Asbestos was found to improve properties, especially nonflammability, in the 1930s to 1950s.
Hazardous Waste Issues
- The 1962 event that brought attention to hazardous waste hazards was the release of Rachel Carson's book "Silent Spring".
- PCBs (Polychlorinated Biphenyls) were banned in 1972 due to their harmful effects.
- The Environmental Protection Agency (EPA) was created in 1970 to address hazardous waste issues.
Hazardous Materials
- Mercury is a part of hazardous waste and is used in the manufacture of products.
Wastewater
- Groundwater is NOT a source of wastewater.
- Sedimentation, filtration, and aeration are part of the self-purification ability of water.
Wastewater Treatment
- The objective of wastewater treatment is to remove contaminants and pollutants from wastewater.
Self-Purification Capacity of River Water
- The two main processes that represent the self-purification capacity of river water are oxidation and sedimentation.
Effects of Untreated Sewage on Water Bodies
- If too much untreated sewage or organic matter is added to a lake or stream, dissolved oxygen levels decrease.
Test your knowledge on hazardous waste management with this quiz. Learn about the different types of hazardous wastes, their characteristics, and the reasons why they pose a threat to the environment and human health. Explore topics such as soil waste, water pollution, sludge, fly ash, used oil, paints, pesticides, e-waste, biomedical waste, cleaners, chemicals, and acids. Understand the importance of proper waste management and how it contributes to a safer and cleaner environment.
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