期刊
APPLIED RADIATION AND ISOTOPES
卷 192, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2022.110602
关键词
Gamma irradiation; Waste sludge treatment; Acrylamide; Nutrients; Fertilizer; e-beam
In this study, the effects of aging on waste sludge treated with e-beam and gamma irradiation were investigated. The results showed that the content of acrylamide in treated sludge did not exceed the limits for fertilizer use after 15 months of storage. Proper storage conditions can prevent an increase in microorganisms and molds. Aging did not decrease the physicochemical characteristics of the sludge treated in this way, nor did it change the concentration of heavy metals and total nutrients.
Using ionizing radiation in treating waste sludge from a drinking water treatment plant is a well-known tech-nique. Sludge treated with ionizing radiation can be used as fertilizer in agriculture. In this paper, the effects of aging on the physicochemical characteristics, the content of microorganisms, molds, acrylamide, heavy metal concentration, and total nutrient content in waste sludge treated with e-beam and gamma irradiation were investigated. The possibility of using treated sludge as a fertilizer in agriculture was evaluated. It has been shown that the content of acrylamide in treated sludge after 15 months of storage does not exceed the limits for sludge to be used as fertilizer. If the sludge is stored in closed bags in a dark place, aging does not increase total mi-croorganisms and molds. The research also showed that the sludge???s physicochemical characteristics treated in this way do not decrease under the influence of aging. Finally, it has been shown that aging does not change the concentration of heavy metals and total nutrients in sludge treated by ionizing irradiation.
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