Stale wastewater characteristics
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Foul odor, septic or sulfur smell. Dark grey or black in color, little to no
oxygen, long time in collection system. Corrosive difficult to treat.
What is shredding?
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The purpose is to shred solids and leave them in the wastewater.
What is the pH limit for NPDES permits in the state of NC?
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No lower than 6, no greater than 9
Aerobic Lagoons
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•Oxygen supplied by natural surface aeration or mechanical aeration and
photosynthesis.
•when waste introduced, usually takes 7-12 days for algae growth.
Application for NPDES permit renewals are required how many days before the
permit expires?
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180 days
40 CFR Part 136
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•code of regulations for labs
•preservation, containers and holding times
, What are wet wells?
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•have submersible pumps
•a float system controls when Pomona come on and off
•usually 2 pumps alternate to save wear and tear
When does the application for exam need to be sent to state?
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Must be postmarked 30 days prior to date of exam.
Types of collection systems
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Sanitary, storm, combined
Aerobic digestion
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Give this one a try later!
Foul odor, septic or sulfur smell. Dark grey or black in color, little to no
oxygen, long time in collection system. Corrosive difficult to treat.
What is shredding?
Give this one a try later!
The purpose is to shred solids and leave them in the wastewater.
What is the pH limit for NPDES permits in the state of NC?
,Give this one a try later!
No lower than 6, no greater than 9
Aerobic Lagoons
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•Oxygen supplied by natural surface aeration or mechanical aeration and
photosynthesis.
•when waste introduced, usually takes 7-12 days for algae growth.
Application for NPDES permit renewals are required how many days before the
permit expires?
Give this one a try later!
180 days
40 CFR Part 136
Give this one a try later!
•code of regulations for labs
•preservation, containers and holding times
, What are wet wells?
Give this one a try later!
•have submersible pumps
•a float system controls when Pomona come on and off
•usually 2 pumps alternate to save wear and tear
When does the application for exam need to be sent to state?
Give this one a try later!
Must be postmarked 30 days prior to date of exam.
Types of collection systems
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Sanitary, storm, combined
Aerobic digestion
Give this one a try later!
