All Flashcards
Define effluent.
Treated wastewater discharged from a treatment facility.
Define biosolids.
Solid byproducts of sewage treatment, often used as fertilizer.
Define sludge.
Solid waste that settles to the bottom of a septic tank or sewage treatment plant.
Define leachate.
Liquid that has percolated through a solid and leached out some of the constituents.
Define point source pollution.
Pollution from a single, identifiable source.
Define nonpoint source pollution.
Pollution from diffuse sources that are difficult to trace.
What is a septic tank?
Underground wastewater treatment system for properties lacking central sewer systems.
What is a drainage field?
Area where effluent from a septic tank flows for filtration and decomposition.
Define groundwater pollution.
Contamination of underground water sources, making them unsafe.
What are MCLs?
Maximum Contaminant Levels: standards set by the EPA for drinking water contaminants.
Why is sewage treatment important?
Reduces disease spread, prevents water pollution, allows water reuse, and can generate energy.
How do septic systems work?
Separation, anaerobic digestion, and discharge into a drainage field for filtration.
Why is septic tank maintenance crucial?
Prevents pollution and ensures proper functioning of the system.
Why is groundwater pollution a concern?
Contaminates drinking water, harms ecosystems, and causes health problems.
Explain the importance of water reuse.
Conserves water resources, especially in water-scarce regions, and reduces demand on freshwater sources.
What is anaerobic digestion?
Breakdown of organic matter by bacteria in the absence of oxygen, used in septic tanks and sewage treatment.
Describe the role of microorganisms in sewage treatment.
Microorganisms break down organic matter during secondary treatment, removing dissolved pollutants.
What is the significance of source water protection?
Protects drinking water sources from contamination, ensuring a safe and reliable water supply.
Explain the concept of 'pollutant discharge'.
Release of harmful substances into the environment, regulated by laws like the Clean Water Act.
What are best management practices (BMPs)?
Effective and practical strategies for preventing or reducing pollution from various sources.
What is the primary goal of the Clean Water Act (CWA)?
To restore and maintain the chemical, physical, and biological integrity of U.S. waters.
What are key provisions of the Clean Water Act?
EPA sets water quality standards, regulates point and nonpoint sources, NPDES permit program, protection of wetlands.
What is the primary goal of the Safe Drinking Water Act (SDWA)?
To protect public health by regulating public drinking water supplies and ensuring water is safe.
What are key provisions of the Safe Drinking Water Act?
EPA sets national standards for drinking water quality, public water systems must monitor and test water, MCLs are set.