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Land application of sewage sludge incinerator ash for phosphorus recovery: A review
Chemosphere ( IF 8.1 ) Pub Date : 2021-01-23 , DOI: 10.1016/j.chemosphere.2021.129609
Persephone Ma , Carl Rosen

Phosphorus (P) is essential for all living things and an integral part of food production. However, significant amounts of P are functionally lost when wastewater byproducts, such as biosolids or sewage sludge incinerator ash (SSA), are not beneficially reused. Around 20% of sewage sludge produced in the US is incinerated and nearly 25% of sewage sludge is incinerated in European Union member countries. SSA contains significant amounts of P (up to 14% total P) and other beneficial elements but is typically sent to landfills for disposal. However, SSA has also been explored as one method of capturing and redirecting P back into the food system. Research investigating SSA characterization, P availability, and contaminant concentrations and behavior in soil is required to understand the effects of SSA land application on soil chemical properties and crop production. Several approaches for recovering P from SSA have been investigated that consider these factors. Ultimately, the opportunity for land application of SSA depends on the individual characteristics of a given SSA, ex. total P and contaminant concentrations, and the requirements and regulations of the region where it is produced and applied. In this review, we address the history of P recovery from SSA and discuss research regarding characterization, contaminants, P availability, and land application of SSA.



中文翻译:

污泥焚烧炉灰在磷回收中的土地应用研究进展

磷对所有生物都是必不可少的,是食品生产不可或缺的一部分。但是,当废水副产品(如生物固体或污水污泥焚烧炉灰(SSA))没有得到有益的再利用时,会大量损失P的功能。在美国,约有20%的污水污泥被焚化,而在欧盟成员国中有近25%的污水污泥被焚化。SSA含有大量的P(最高占P的14%)和其他有益元素,但通常会送到垃圾填埋场处置。然而,SSA也已被用作捕获P并将其重定向回食品系统的一种方法。研究SSA表征,磷的可用性,并需要土壤中的污染物浓度和行为来了解SSA土地施用对土壤化学性质和农作物产量的影响。考虑到这些因素,已经研究了几种从SSA中回收P的方法最终,SSA土地应用的机会取决于给定SSA的个性特征。磷和污染物的总浓度,以及生产和使用磷的区域的要求和规定。在这篇综述中,我们讨论了从SSA回收磷的历史,并讨论了有关SSA的特征,污染物,磷的有效性和土地利用的研究。

更新日期:2021-02-02
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