Translation
Radiation Purification of Environmental Pollutants
Treatment of environmental pollution by means of ionizing
radiation is a new technology.
Purification Mechanism
Subject to ionizing radiation (e.g. Y-rays or electron
beams) moisture in environmental pollutants and harmful bacteria
and microorganisms will be excited and ionized, thereby releasing
highly active radiolytic products and free radicals which may be
strong oxidizing agents or reducing agents. With these agents,
pollutants can be decomposed through oxidation, denatured or poly-
merized so as to destroy the pathogens in the wastes.
Mode of Radiation
Common radiation sources are radioisotopes, cobalt-60 and
caesium-137, and accelerators.
Typical modes of radiation are can-type and foil-type,
using radioistopes and accelerators respectively as radiation sources.
Application
Most of the polluting substances in the three primary
environmental polluting sources waste gas, waste water and solid
waste can be treated with radiation. The application falls gener-
-
ally under the following categories :
Treatment of Water
1.
Decolorization, deodorization, sterilization of and
removal of foul taste from natural water bodies.
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