Handbook of Civil Engineering Calculations

Low Low Low

to

medium when

regeneration

is

possible

LowLow but rising

fast

Medium

Mostly volatile organicsMostly volatile organicsMost organics, though normally

restricted

to

those with

sufficien

volatility

to

allow carbon

regeneration

Organic wastesSolid,

nonhazardous

wastes

Inorganic wastes, possibly organic

wastes;

not

applicable

to

very

large volumes

Contaminated water

is

pumped

through

a

column where

it is

contacted with

a

countercurrent

air

flow,

which

strips

out

certain

pollutants

Similar

to air

stripping except

steam

is

used

as the

stripping

fluid

Organic contaminants

are

removed

from

a

water

or air

stream

by

passing

the

stream through

a bed

of

activated carbon that absorbs

the

organics

Bacterial degradation

of

organic

compounds

is

enhanced

Covering solid wastes with soil

in a

facility

designed

to

minimize

leachate formation

Electric current

is

passed

through

soil

or

waste, which increases

the

temperature

and

melts

the

waste

or

soil.

The

mass

fuses

upon

cooling

Aeration

or air

stripping

Steam strippingCarbon adsorptionBioremediationLandfillingIn

situ vitrification

* Chemical

Engineering.