N 2 O
Nitrous oxide
NMVOC
Nonmethane volatile organic compound
NOx
Nitrogen oxides
NPDES
National Pollutant Discharge Elimination System
O 3
Ozone
ORP
Oxidation reduction potential
PAC
Powdered activated carbon
PAO
Phosphorus-accumulating organism
PFC
Perfluorocarbons
PM
Particulate matter
PM2.5
Fine particles
ppb
Parts per billion
ppmv
Parts per million by volume
ppt
Parts per trillion
RAS
Returned activated sludge
SBOD
Soluble biochemical oxygen demand
SPDES
State Pollutant Discharge Elimination System
SVI
Sludge volume index
TKN
Total Kjeldahl nitrogen
TN
Total nitrogen
TP
Total phosphorus
VFAs
Volatile fatty acids
VIP
Ventilated improved pit latrine
WAS
Waste activated sludge
WASH
Water, Sanitation, and Hygiene
Glossary of Natural Resources and Environmental Pollution
Control [1–18]
100-Year flood levels Severe flood levels with a one-in-100 likelihood of occurring
in any given year.
Abrupt climate change Sudden (on the order of decades), large changes in some
major component of the climate system, with rapid, widespread effects.
Absconding swarm It is an entire colony of bees, which abandons the hive, often
because of disease, wax moth, excessive heat or water, lack of resources, or other
reasons.
Absconding swarm It is an action when an entire colony of bees abandons the
hive, often because of disease, wax moth, excessive heat or water, lack of
resources, or other reasons
Acidity It is the capacity of water or wastewater to neutralize bases. Acidity is
expressed in milligrams per liter of equivalent calcium carbonate.
12 Glossary of Natural Resources and Environmental Pollution Control
423
Nitrous oxide
NMVOC
Nonmethane volatile organic compound
NOx
Nitrogen oxides
NPDES
National Pollutant Discharge Elimination System
O 3
Ozone
ORP
Oxidation reduction potential
PAC
Powdered activated carbon
PAO
Phosphorus-accumulating organism
PFC
Perfluorocarbons
PM
Particulate matter
PM2.5
Fine particles
ppb
Parts per billion
ppmv
Parts per million by volume
ppt
Parts per trillion
RAS
Returned activated sludge
SBOD
Soluble biochemical oxygen demand
SPDES
State Pollutant Discharge Elimination System
SVI
Sludge volume index
TKN
Total Kjeldahl nitrogen
TN
Total nitrogen
TP
Total phosphorus
VFAs
Volatile fatty acids
VIP
Ventilated improved pit latrine
WAS
Waste activated sludge
WASH
Water, Sanitation, and Hygiene
Glossary of Natural Resources and Environmental Pollution
Control [1–18]
100-Year flood levels Severe flood levels with a one-in-100 likelihood of occurring
in any given year.
Abrupt climate change Sudden (on the order of decades), large changes in some
major component of the climate system, with rapid, widespread effects.
Absconding swarm It is an entire colony of bees, which abandons the hive, often
because of disease, wax moth, excessive heat or water, lack of resources, or other
reasons.
Absconding swarm It is an action when an entire colony of bees abandons the
hive, often because of disease, wax moth, excessive heat or water, lack of
resources, or other reasons
Acidity It is the capacity of water or wastewater to neutralize bases. Acidity is
expressed in milligrams per liter of equivalent calcium carbonate.
12 Glossary of Natural Resources and Environmental Pollution Control
423