remediation options lecture 4 Flashcards
what are the five ways aquifers can removal contaminants
filtration adsorption to rock biodegredation volatilization formation of chemicals in host rock
what types of things can be adsorbed
bacteria viruses metals organic moelcules phosphates
type of thing that forms compound on rock
copper carbonate
why can these not work
some contaiminants not removed by this process or
reached capacity
what are the two general ways you can fix it
TIME
active remediation
two types of remediation
in situ
ex situ
physical and chemical and bio methods (5)
air sparging thermal treatment chemical redox manipulation biological reactive barrier
example of biological
use of ethanol to convert cr6+ to cr3+
when is barrier good, and why is it good
for shallow plumes
can often use waste material for it
replacement not for may years, cost effective
types of reactive barrier materials
zero valent iron
transformed red mud
lime
example of barrier
in California
use zero valent iron
to reduce chlorine
two types of ex situ treatment
recovery of contaminatn if not soluable
pumping and treating
types of pumping and treating
steam stripping
oxidative sparging
