REHS Exam - Wastewater Treatment
correctly answered to pass
What are the treatment processes in PRELIMINARY Wastewater Treatment? -
correct answer ✔✔Screening
Comminution
Grit Removal
Pre-Aeration
Flow Metering / Sampling
What are the treatment processes in PRIMARY Wastewater Treatment? - correct
answer ✔✔Sedimentation / Flotation
What are the treatment processes in SECONDARY Wastewater Treatment? -
correct answer ✔✔Biological Treatment (ie activated sludge, trickling filters,
rotating biological contactor (RBC))
Sedimentation
What are the treatment processes in TERTIARY Wastewater Treatment? - correct
answer ✔✔Filtration
Chemical / biological treatment of nutrients
,Sedimentation (optional)
What are the treatment processes in the DISINFECTION step in Wastewater
Treatment? - correct answer ✔✔Chlorination
Ultraviolet
Ozone
What are the treatment processes in the SOLIDS TREATMENT step in Wastewater
Treatment? - correct answer ✔✔Dewatering
Digestion
Disposal
What are the steps in the Wastewater Treatment Process? - correct answer
✔✔Preliminary Treatment (screening, comminution, grit removal, pre-aeration,
flow metering/sampling)
Primary Treatment (sedimentation/flotation)
Secondary Treatment (biological treatment, sedimentation)
Tertiary Treatment (filtration, chemical/biological treatment of nutrients,
sedimentation (optional))
, Disinfection (chlorination, ultraviolet, ozone)
Solids Treatment (dewatering, digestion, disposal)
What are some diseases that are common concerns in wastewater? - correct
answer ✔✔Cholera, dysentery, salmonella, typhoid fever mainly
Less commonly, anthrax
What are some protozoa that are concerns in wastewater? - correct answer
✔✔Giardia and Cryptosporidium
What are some viruses that are common concerns in wastewater? - correct
answer ✔✔Polio and Hepatitis
What is NJ's ultimate goal for wastewater treatment? - correct answer ✔✔The
protection of NJ's waterways (receiving streams). All waterways fishable,
swimmable, and drinkable.
What is the purpose of wastewater treatment? - correct answer ✔✔Remove
solids
Stabilize organic matter
Remove pathogenic organisms
correctly answered to pass
What are the treatment processes in PRELIMINARY Wastewater Treatment? -
correct answer ✔✔Screening
Comminution
Grit Removal
Pre-Aeration
Flow Metering / Sampling
What are the treatment processes in PRIMARY Wastewater Treatment? - correct
answer ✔✔Sedimentation / Flotation
What are the treatment processes in SECONDARY Wastewater Treatment? -
correct answer ✔✔Biological Treatment (ie activated sludge, trickling filters,
rotating biological contactor (RBC))
Sedimentation
What are the treatment processes in TERTIARY Wastewater Treatment? - correct
answer ✔✔Filtration
Chemical / biological treatment of nutrients
,Sedimentation (optional)
What are the treatment processes in the DISINFECTION step in Wastewater
Treatment? - correct answer ✔✔Chlorination
Ultraviolet
Ozone
What are the treatment processes in the SOLIDS TREATMENT step in Wastewater
Treatment? - correct answer ✔✔Dewatering
Digestion
Disposal
What are the steps in the Wastewater Treatment Process? - correct answer
✔✔Preliminary Treatment (screening, comminution, grit removal, pre-aeration,
flow metering/sampling)
Primary Treatment (sedimentation/flotation)
Secondary Treatment (biological treatment, sedimentation)
Tertiary Treatment (filtration, chemical/biological treatment of nutrients,
sedimentation (optional))
, Disinfection (chlorination, ultraviolet, ozone)
Solids Treatment (dewatering, digestion, disposal)
What are some diseases that are common concerns in wastewater? - correct
answer ✔✔Cholera, dysentery, salmonella, typhoid fever mainly
Less commonly, anthrax
What are some protozoa that are concerns in wastewater? - correct answer
✔✔Giardia and Cryptosporidium
What are some viruses that are common concerns in wastewater? - correct
answer ✔✔Polio and Hepatitis
What is NJ's ultimate goal for wastewater treatment? - correct answer ✔✔The
protection of NJ's waterways (receiving streams). All waterways fishable,
swimmable, and drinkable.
What is the purpose of wastewater treatment? - correct answer ✔✔Remove
solids
Stabilize organic matter
Remove pathogenic organisms
