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Transcript of Wastewater Treatment
Any water that has been degraded in quality by anthropogenic sources...
What's the problem?
Inadequately treated wastewater can cause adverse health effects on humans, the economy, and the environment
Treatment of Wastewater
Combined Sewer Overflow
Case Study: Detroit
According to the World Health Organization, there are 2.4 billion people without access to a sanitary waste disposal system (2001)
The United States
“The EPA estimates that the nation must invest $390 billion over the next 20 years to replace existing systems and build new ones to meet increasing demands” (ASCE)
Pharmaceuticals/Pharmacologically Active Compounds (
Endocrine Disrupting Compounds (
of a drug in its original or biologically active form can be excreted after human use
Compounds are unregulated in wastewater treatment process
What is "
Removal of suspended solids and grits
Reduces the amount of BOD by 20-30% and suspended solids by 50-60%
Nitrogen & phosphorus
Vegetable washing water
coal & steel
pharmaceuticals, soaps, synthetic detergents, pesticides, herbicides
Wastewater comes from every room in the house
The Current Situation
Lack of funds
Largest polluter of phosphorous secreting into Lake Erie
Water Shut off
Removal of dissolved organic matter
Conversion to Carbon Dioxide, water, and energy
85% reduction in BOD and suspended solids
Major technology updates
~99% of impurities removed
-Can overflow after heavy rain/snowmelt events
Linnea Johnson, Emily Bassett, Julianne Foisy