Questions and Answers
What federal agency enforces the Clean Water Act?
EPA
What does NPDES stand for?
National Pollutant Discharge Elimination System
Requirements of States Primacy Regulations include the following: 1. Must be in compliance with _____, 2. EPA will take action if the state fails to do so, 3. States' regulations must not be more lenient than EPA, 4. EPA can revoke the state's NPDES authority.
CWA
What is the purpose of Preliminary Treatment?
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What are some examples of Preliminary Processes?
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What is the speed at which influent water should be during collections?
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If influent water slows to less than 0.7 fps, organic material will also settle in the grit basin.
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What does Primary Treatment aim to remove?
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What is the purpose of Disinfection in wastewater treatment?
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What biological organism is responsible for stabilizing waste material in wastewater treatment?
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What does the Federal Register update daily?
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What is the acronym for the Georgia Department of Natural Resources Environmental Protection Department?
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By when must DMR be postmarked?
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What are some examples of microorganisms involved in wastewater treatment?
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What are the predominant organisms involved in secondary treatment?
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What are the two types of sludge digesters?
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How is the volume of sludge reduced?
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Regulatory Reporting is sometimes referred to as:
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Study Notes
Clean Water Act and Regulations
- EPA (Environmental Protection Agency) enforces the Clean Water Act (CWA).
- NPDES stands for National Pollutant Discharge Elimination System, regulating discharges into waters.
- States must comply with CWA to maintain primacy; EPA can revoke NPDES authority if states are non-compliant.
Treatment Processes
- Preliminary Treatment aims to remove large solid materials using bar screens, racks, and grit chambers.
- Primary Treatment occurs in clarifiers and typically removes about 60% of Total Suspended Solids (TSS) and 30% of Biochemical Oxygen Demand (BOD).
- Secondary Treatment cleanses water further by reducing dissolved and colloidal organic matter, mainly through bacteria that feed on waste.
Disinfection and Monitoring
- Disinfection removes pathogenic organisms using methods like chlorination, UV, ozone, and chlorine dioxide.
- DMR (Discharge Monitoring Report) is required monthly and must be postmarked by the 15th of the following month.
- Title 40 CFR part 136 outlines approved methods for NPDES monitoring.
Microorganisms and Sludge Management
- Microorganisms involved include algae, bacteria, protozoa, and rotifers, with bacteria predominantly responsible for waste stabilization.
- Sludge digestors can be aerobic or anaerobic to reduce sludge volume as bacteria consume waste material.
Important Terms
- DO represents Dissolved Oxygen, crucial for aquatic life and treatment processes.
- States can regulate primacy; GA DNR EPD (Georgia Department of Natural Resources Environmental Protection Division) oversees compliance in Georgia.
- Compliance monitoring is also referred to as regulatory reporting or permit monitoring.
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Description
Test your knowledge on the Clean Water Act and related federal regulations with these flashcards. Covering key terms like EPA and NPDES, this quiz helps reinforce important concepts for laboratory analysts. Perfect for students preparing for exams in environmental science.
