Part A: Sanitization and use of sewage sludge in soil Technical Note 7 - Use of biosolids to recover degraded areas

Cadernos Técnicos Engenharia Sanitária e Ambiental Pub Date : 1900-01-01 DOI:10.5327/276455760201007

L. Chamhum-Silva, J. B. G. Silva, Leiliane Saraiva Oliveira, Marcio Niemeyer Borges, Tiago Geraldo de Lima, Simone Bittencourt, A. Matos

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Abstract

Organic matter (OM) is fundamental in the rrecovery of degraded areas (RDA), particularly when concerning the soils’ chemical and physical properties. The biosolid obtained from sewage sludge is an important source of OM and nutrients. This technical note discusses the influence of both on RDA, as well as the potential for using biosolids for that purpose. OM acts as a reservoir of nutrients, which are gradually released; it improves the cation exchange capacity of the soil; and it can complex or chelate metals potentially toxic to plants. It is also highlighted its influence on the reduction of the specific mass of the soil, the formation of micro and macro aggregates, the improvement of soil stability, and the increase of soil specific surface. The practical aspects of biosolids use in RDA are discussed in the light of CONAMA Resolution 498/2020, mainly about the criteria for calculating the application doses. Two case studies are also presented.

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A部分:土壤中污水污泥的消毒和使用技术注释7 -使用生物固体来恢复退化地区

有机物质(OM)是退化地区(RDA)恢复的基础，特别是在涉及土壤的化学和物理性质时。从污水污泥中获得的生物固体是有机质和营养物质的重要来源。本技术说明讨论了两者对RDA的影响，以及为此目的使用生物固体的可能性。OM作为营养物质的储存库，逐渐释放出来;提高了土壤的阳离子交换能力;它可以复合或螯合对植物有潜在毒性的金属。对土壤比质量的降低、微观和宏观团聚体的形成、土壤稳定性的改善、土壤比表面积的增加等方面的影响也得到了突出的体现。根据CONAMA第498/2020号决议，讨论了生物固体在RDA中使用的实际方面，主要是关于计算应用剂量的标准。本文还介绍了两个案例研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Cadernos Técnicos Engenharia Sanitária e Ambiental

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