How do you clean up polluted soil?

Answer 1

create harmless chemicals!!

Answer:

There are several ways:

• For oils you remove as much free oil as you can then biodegrade (use microbes) the remainder.
• For volatile material allow air to flow through the soik to strip out the organics
• For heavy metals wash them out with water and collect the water for further treatment
• Heavy metals can be sequestered with chelating agents or bioaccumulated by plants
• acids and alkalis can be neutralized
• Salts can be sequestered or washed out