The reuse of biosolids on agricultural land: Critical issues and perspective

Water Environment Research : a Research Publication of the Water Environment Federation
Maria Cristina CollivignarelliIlaria Benigna

Abstract

The sludge management represents a considerable amount of operational costs for wastewater treatment plants (WWTPs). Issues concerning the treatment and the recovery/disposal of biosolids are gaining importance especially in Lombardy region, where the biosolid landspreading on agricultural soils is a very common practice. The aim of this work was to evaluate the results obtained from a survey carried out on the biosolids/sludge, derived from WWTPs, ingoing to and outgoing from the STPs (sludge treatment plants-authorized for the treatment on behalf of third parties) located in Pavia Province. Moreover, the characterization of agricultural soils that receive the biosolids is carried out. Furthermore, the whole biosolid management chain, from production to landspreading on agricultural soils, was studied, highlighting the critical issues based on the survey results. The results obtained suggested the following actions: (a) the reduction of sludge production in WWTPs; (b) a more "controlled" production in terms of biosolid qualitative characteristics; (c) better "selection" of the sludge ingoing to STPs; and (d) more effective actions to control the "response" of the agricultural soils. Furthermore, full compliance with the best s...Continue Reading

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Citations

Apr 3, 2020·International Journal of Environmental Research and Public Health·Maria Cristina CollivignarelliSabrina Sorlini
Nov 15, 2020·International Journal of Environmental Research and Public Health·Md Ekhlasur RahmanS M Shamsuzzaman
Apr 4, 2021·International Journal of Environmental Research and Public Health·Giuseppe CampoBarbara Ruffino

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