The radioactivity of naturally occurring radioisotopes in the sewage sludge?

01 January 1970 1 5K Report

Is there a change in the radioactivity before the sewage sludge treatment and after the treatment?

I wish to provide me with research and studies on the subject

It depends on what sewage sludge contains before treatment and after treatment. For example, if the activity level was high, then depending on the sewage sludge treatment method.

https://www.jstor.org/stable/4598149?seq=1

https://www.nrc.gov/docs/ML1034/ML103400184.pdf

https://www-pub.iaea.org/MTCD/publications/PDF/te_1598_web.pdf

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