This paper describes the potential of using ionizing radiation to disi
nfect sewage and sludge, as well as the possibilities of recycling nat
ural resources and their by-products. Presented here is a brief review
on the development of radiolytic treatment of wastewaters with electr
on beam accelerators or Co-60 gamma sources to eliminate organic and b
iological contaminants from liquid and solid wastes. Suitable radiatio
n doses are suggested for each particular case. (C) 1997 Elsevier Scie
nce Ltd.