Department of Environmental Engineering and Physics, viale dell'Ateneo Lucano, 10, 85100 Potenza, Basilicata, Italy.
Waste Manag. 2013 Jun;33(6):1461-8. doi: 10.1016/j.wasman.2013.02.007. Epub 2013 Mar 11.
In recent years, the replacement of natural raw materials with new alternative materials, which acquire an economic, energetic and environmental value, has gained increasing importance. The considerable consumption of water has favoured the increase in the number of drinking water treatment plants and, consequently, the production of drinking water sludge. This paper proposes a protocol of analyses capable of evaluating chemical characteristics of drinking water sludge from surface water treatment plants. Thereby we are able to assess their possible beneficial use for geo-environmental applications, such as the construction of barrier layers for landfill and for the formation of "bio-soils", when mixed with the stabilized organic fraction of municipal solid waste. This paper reports the results of a study aimed at evaluating the quality and environmental aspects of reconstructed soils ("bio-soil"), which are used in much greater quantities than the usual standard, for "massive" applications in environmental actions such as the final cover of landfills. The granulometric, chemical and physical analyses of the sludge and the leaching test on the stabilized organic fraction showed the suitability of the proposed materials for reuse. The study proved that the reuse of drinking water sludge for the construction of barrier layers and the formation of "bio-soils" reduces the consumption of natural materials, the demand for landfill volumes, and offers numerous technological advantages.
近年来，用具有经济、能源和环境价值的新材料替代天然原料的做法变得越来越重要。大量用水导致饮用水处理厂数量增加，从而产生了饮用水污泥。本文提出了一种能够分析地表水饮用水处理厂污泥化学特性的分析方案。借此，我们可以评估其在地质环境应用中的潜在有益用途，例如用作垃圾填埋场的阻隔层，以及与城市固体废物稳定有机部分混合形成“生物土壤”。本文报告了一项研究的结果，该研究旨在评估用于环境行动（如垃圾填埋场最终覆盖）中“大规模”应用的重构土壤（“生物土壤”）的质量和环境方面，其使用量远远超过通常的标准。对污泥的粒度、化学和物理分析以及对稳定有机部分的浸出试验表明，所提议的材料适合再利用。研究证明，饮用水污泥用于建造阻隔层和形成“生物土壤”可以减少对天然材料的消耗、对垃圾填埋场容积的需求，并提供众多技术优势。
