quiz 8 Flashcards
After a rainfall event, what happens to the flow of wastewater in combined-sewer-overflow collection system?
the flow of wastewater increases
What is true about industrial wastewater
It may be connected to the municipal sewer line after pre-treatment
What process is used in primary wastewater treatment
settling
What is true about the activated sludge process
aerobic microorganisms biodegrade wastewater organic material
In a municipal wastewater treatment system which process removes the majority of BOD?
activated sludge
What is an example of a fixed growth system for secondary municipal wastewater treatment?
trickling filters
Which parameters will negatively affect the activated sludge process?
presence of toxic chemicals
If wastewater recycling is intended for irrigation purposes which treatment process is optimum?
membrane bioreactors
What is NOT true about Membrane Bioreactor (MBR) fouling mitigation
there is no need for fouling mitigation
In advanced wastewater treatment for nitrogen removal the following is true:
ammonium is converted to volatile ammonia
In advanced wastewater treatment for chemical phosphorus removal the following is true
phosphorus is precipitated
What are class A and class B biosolids?
treated municipal wastewater sludge
What is NOT true for class B biosolids
they can be used in private lawns and home gardens
What is NOT contained in septic systems
chlorination system
What is NOT an option for on-site wastewater treatment in rural areas in the US
No treatment
