通过鸟粪石结晶回收磷：对操作因素理解的最新进展。
Phosphorus recovery through struvite crystallisation: Recent developments in the understanding of operational factors.
机构信息
School of Biological and Chemical Engineering, Nan Yang Institute of Technology, Nan Yang, Henan, China; Department of Chemical & Materials Engineering, The University of Auckland, New Zealand.
School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, China.
出版信息
J Environ Manage. 2019 Oct 15;248:109254. doi: 10.1016/j.jenvman.2019.07.025. Epub 2019 Jul 12.
Phosphorus is an essential element for life and is predicted to deplete within the next 100 years. Struvite crystallization is a potential phosphorus recovery technique to mitigate this problem by producing a slow release fertilizer. However, complex wastewater composition and a large number of process variables result in process uncertainties, making the process difficult to predict and control. This paper reviews the research progress on struvite crystallization fundamentals to address this challenge. The influence of manipulated variables (e.g. seed material, magnesium dosage and pH) and sources of variation on phosphorus removal efficiency (e.g. organics and heavy metal concentration) and product purity were investigated. Recently developed models to describe, control and optimize those variables were also discussed. This review helps to identify potential challenges in different wastewater streams and provide valuable information for future phosphorus recovery unit design. It therefore paves the way for commercialization of struvite crystallization in the future.
磷是生命所必需的元素，预计在未来 100 年内将耗尽。鸟粪石结晶是一种潜在的磷回收技术，可以通过生产缓释肥料来缓解这个问题。然而，复杂的废水成分和大量的过程变量导致了过程的不确定性，使得过程难以预测和控制。本文综述了鸟粪石结晶基础研究的进展，以解决这一挑战。考察了操作变量（如晶种材料、镁剂量和 pH 值）和变化源（如有机物和重金属浓度）对磷去除效率和产品纯度的影响。还讨论了最近开发的用于描述、控制和优化这些变量的模型。本综述有助于识别不同废水流中的潜在挑战，并为未来的磷回收单元设计提供有价值的信息。因此，为鸟粪石结晶的商业化铺平了道路。
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