Lecture 1

Question 1

What are Relevant Regulation for Wastewater?

Answer 1

• Clean Water Act:
• ->NPDES permit (National Pollutant Discharge Elimination System)
• ->TMDL (Total Maximum Daily Load) - a comprehensive watershed-based water quality management
• CWA

Question 2

What TMDL?

Answer 2

• Total Maximum Daily Load

- Max. amount of pollutant that a body of water can receive and still meet water quality standards

Question 3

What are the sources of water?

Answer 3

• Domestic wastewater
• Industrial wastewater
• Infiltration/inflow
• Stormwater

Question 4

What are the types of wastewater collection systems?

Answer 4

• Sanitary Wastewater collection
• Storm water collection
• Combined wastewater and storm drain collection system

Question 5

What is the mass balance equation for reactive solutes?

Answer 5

• d(M)/dt = d(in)/dt - d(out)/dt )
• ->not used for chemical or biological reactions
• d(M)/dt = d(in)/dt - d(out)/dt +/-r

Question 6

What are reaction kinetics?

Answer 6

-Time dependent reactions

Question 7

What is a point source?

Answer 7

• Are very specific, confirmed origin

- ex. Is factory drainage pipe

Question 8

What is a non-point source?

Answer 8

• runoff of sediment, fertilizers, pesticides, and herbicides

Question 9

What is the CWA?

Answer 9

• Clean Water Act

- established the National Pollutant Discharge Elimination system (NPDES)

Question 10

What is NPDES?

Answer 10

• National Pollutant Discharge Elimination system

- Program based on uniform technologies minimum standard for each discharged

Question 11

What are the treatment process?

Answer 11

• physical
• chemical
• thermal
• biological

Question 12

What is removed in a municipal treatment?

Answer 12

• BOD
• SS
• pathogens
• nutrients

Question 13

What is the process analysis?

Answer 13

• Treatment uses Chem, Bio, or physical

- mass balance used to tell of flow pattern