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CIV-439 Exam

QuestionAnswer
List the major environ'l issues that're impacting the world today. o Natural resources depletion o Pollution of the air, water, & soil o Climate change/natural disasters (e.g., hurricanes, wildfires) o Solid wastes, landfill mgmt, & recycling o Overgrown cities/unsustainable infrastructure o Meat farming
List the 5 major types of environ'l issues. 1.) Energy 2.) Pollution 3.) Climate Change 4.) Habitat Destruction 5.) Resource Depletion
How to address the 5 major environ'l issues 1.) Invest in renewable energies 2.) Improve control of generation & treatment of pollutants 3.) Focus on carbon sequestration 4.) Use environmental impact assessments 5.) Replace utilized resources and extract them responsibly
What do all regulatory systems under environ'l statutes have common? o Planning and priority setting o Standard setting o Permitting o Monitoring and surveillance o Enforcement
What is the treatment for suspended solids? Settling and filtration
What is the treatment for biodegradable organic contaminants? Biological treatment
What is the treatment for pathogens? Disinfection
What is the treatment for nutrients? Precipitation, stripping, and denitrification
What is the treatment for heavy metals? Precipitation
What is the treatment for refractory organics? Activated carbon
What is the treatment for dissolved solids? Precipitation
What is removed in wastewater pretreatment? Materials that can cause operational problems
What is removed in wastewater primary treatment? About 60% of solids and 35% of BOD
What is removed in wastewater secondary treatment? About 85% of solids and BOD
What is removed in wastewater advanced treatments? Typically removes about 95% of BOD, solids, Nitrogen, and Phosphorus
Created by: sdturner
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