There is an ongoing paradigm shift; wastewater is often not considered a waste any more, but a source of valuable resources: nutrients (N: nitrogen, P: phosphorus, and K: potassium), energy and water. The recovery of phosphorus from municipal wastewater has gained a lot of attention because of limited phosphate rock reserves and associated geopolitics, and pollution of phosphate rock. At the WWTP of Leuven, Aquafin operates a full scale installation to recover phosphorus as struvite from digested sludge. This paper discusses the performance of the struvite plant, pollutants in the struvite, struvite use, and economics.

中文翻译：

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从消化的污泥中以鸟粪石的形式回收磷–全面的经验

正在进行中的范式转换；废水通常不再被认为是废物，而是宝贵资源的来源：养分（N：氮，P：磷和K：钾），能源和水。由于有限的磷矿石储量和相关的地缘政治以及磷矿石的污染，从市政废水中回收磷已引起广泛关注。在鲁汶的污水处理厂，Aquafin进行了大规模安装，从消化的污泥中回收了鸟粪石中的磷。本文讨论了鸟粪石工厂的性能，鸟粪石中的污染物，鸟粪石的使用和经济性。