{"id":9568,"date":"2020-10-21T13:19:27","date_gmt":"2020-10-21T13:19:27","guid":{"rendered":"https:\/\/www.allegriecologia.it\/spreading-and-reusing-sludge-in-agriculture\/"},"modified":"2020-10-22T11:56:04","modified_gmt":"2020-10-22T11:56:04","slug":"spreading-and-reusing-sludge-in-agriculture","status":"publish","type":"post","link":"https:\/\/www.allegriecologia.it\/en\/spreading-and-reusing-sludge-in-agriculture\/","title":{"rendered":"Spreading and reusing sludge in agriculture"},"content":{"rendered":"<p>A sewage treatment plant in turn produces waste. These are <strong>sewage sludge<\/strong>, the final residue that comes from the purification treatment of urban and suburban wastewater, civil and industrial.<br \/>\nThese sludge are produced at various stages of purification and flow into the so-called sludge line of the sewage treatment plant. Among the various ways of disposal is the reuse of <strong>sludge in agriculture<\/strong>, the subject of regulatory intervention in recent months and the comparison of different opinions.<\/p>\n<h2>Treatment and disposal of sewage sludge<\/h2>\n<p>Before being disposed of, sludge can undergo various <strong>treatments<\/strong> to stabilize the organic component, to reduce the presence of water and increase the dry component.<br \/>\nDepending on the origin and quality of the sludge, the bestowal may be in an <strong>incinerator<\/strong>, in <strong>landfill<\/strong> for special waste or in <strong>agriculture<\/strong> as fertilizers.<\/p>\n<h2>Disposal of sludge in agriculture in Italy<\/h2>\n<p>Among the ways of disposing of sludge, in Italy reuse in agriculture affects about <a href=\"https:\/\/it.wikipedia.org\/wiki\/Fango_da_depurazione\" target=\"_blank\" rel=\"noopener noreferrer\">30% of the sludge produced<\/a>.<br \/>\nTreated sludge is allowed to stabilise organic components, they must not contain harmful or toxic substances and remain within certain thresholds for substances such as heavy metals.<\/p>\n<p>The 1992 Decree governing the sector was joined by <strong>regional initiatives<\/strong> and <strong>intervention by the Supreme Court<\/strong> which sometimes created <a href=\"https:\/\/www.tuttoambiente.it\/commenti-premium\/emergenza-fanghi-puntate-precedenti-prospettive-future-corso-formazione\/\" target=\"_blank\" rel=\"noopener noreferrer\">conflicting situations in the management of sludge<\/a>; as recently in Lombardy, where stalls in disposals have been created, reducing the supply to agriculture and on the other hand not making it possible to resort massively to incinerator or landfill.<\/p>\n<h2>The latest developments<\/h2>\n<p>The issue of sludge in agriculture is a contentious issue because it clashes with the <strong>protection of the environment<\/strong>and soil, as well as with the safety of agricultural products. And in recent months the debate in Italy has been intense.<\/p>\n<p>This comparison of different positions is part of a recent state intervention with<strong>Article 41 of the so-called &#8220;Genova Decree&#8221;. <\/strong>With this regulatory initiative, the limits allowed for the presence of hydrocarbons in sludge for agriculture have been increased in an attempt to keep the disposal needs together and environmental protection. In the absence of a comprehensive regulatory framework, the risk is that of excessive storage, which is also risky. However, these new limits have been criticized by environmental groups for increasing the permissible threshold under the previous Supreme Court ruling in 2017.<\/p>\n<p>More recently <a href=\"https:\/\/www.lastampa.it\/2019\/05\/17\/scienza\/fanghi-di-depurazione-in-agricoltura-bratti-ispra-troppe-criticit-2R8t0wTCg9viourJ1YySoN\/pagina.html\" target=\"_blank\" rel=\"noopener noreferrer\">Alessandro Bratti<\/a>, Director General of the Ispra (Institute for Environmental Protection and Research), has been critical of the use of sludge in agriculture, especially if mixed, i.e. if they come from both urban and industrial wastewater, due to the risk of dispersion of pollutants.<br \/>\nBut, according to Alessandro Bratti, the regulatory framework is still to be defined and deepened, especially with regard to <strong>traceability and controls<\/strong>. This is in the face of European countries that have decided to ban sludge altogether in agriculture, believing that there are more risks than benefits.<\/p>\n<p>If sludge can be a resource in reuse, an <strong>overall picture of the real costs and benefits of<\/strong> their disposal in agriculture is needed, as part of a comprehensive review of the regulatory framework that ensures safety for people and environmental protection.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A sewage treatment plant in turn produces waste. These are sewage sludge, the final residue that comes from the purification treatment of urban and suburban wastewater, civil and industrial. These sludge are produced at various stages of purification and flow into the so-called sludge line of the sewage treatment plant. Among the various ways of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7933,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[39],"tags":[],"class_list":["post-9568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sewage sludge disposal in agriculture | Allegri Ecologia<\/title>\n<meta name=\"description\" content=\"Among the methods of disposal of sewage sludge, the spreading of sludge in agriculture is a controversial reuse for the protection of the environment.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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