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30 terms

Wastewater Treatment

STUDY
PLAY
solid waste
waste made up of solid material
wastewater
a liquid made of solid waste and water
sewage
wastewater carried away in sewers or drains
influent
water or other liquid flowing into a treatment plant
effluent
water or other liquid flowing out of a water treatment plant
debris
trash or pieces of broken things
grit
heavy pieces of material such as sand or gravel
particles
very small pieces of matter
organic
made of plant or animal matter (of living things)
inorganic
not made of plant or animal matter (not living)
sludge
a thick muddy mixture of organic and inorganic materials
bio-solid
organic solids in sludge
organism
a living thing that can act or function independently
micro-organism
very small living things that can only be seen with a microscope (micro=small)
pathogen
an organism that causes disease (e. coli)
agricultural fertilizer
a substance added to soil to help plants grow
methane gas (CH4)
a gas created when solid waste breaks down
landfill
an area of land that is filled with solid waste
UV disinfection
using ultraviolet light to kill harmful pathogens
incineration
completely burning up
clarify
make clear by removing solids
aeration
addition of air or oxygen
settle
to sink down
digest
to break down materials inside the body
bar screener
where large objects such as sticks, cans and rocks are removed
grit tank
where wastewater is slowed down to allow sand, gravel and other materials to sink
settling tank
where wastewater is held for several hours allowing heavy material to settle
aeration tank
where oxygen is added to provide a place for micro-organisms to grow and eat small organic particles
clarifier
where some of the solids and micro-organisms settle and some are put back into the process of treating more wastewater
digester
where micro-organisms use organic material in the solids as food and convert it to bio-solids and methane gas