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M.Yu. Dyagelev

 

CRYSTALLIZATION METHODS FOR EXTRACTING PHOSPHORUS FROM WASTEWATER SEDIMENTS

 

Annotation. The article is devoted to a systematic analysis of crystallization methods for extracting phosphorus from wastewater sludge, which is one of the most promising approaches to solving the global problem of depleting phosphate ore reserves and preventing eutrophication of water bodies. The article discusses the main forms of phosphorus in the sludge, classifies modern technologies for extracting phosphorus (crystallization, biological, thermal, chemical, and physical methods), and analyzes their technological features. Special attention is given to the crystallization of struvite (MgNH4PO4·6H2O), which is the most mature and widely used technology for efficiently extracting phosphorus. The requirements for the quality of the resulting products, including the bioavailability of phosphorus for plants and the content of heavy metals, are considered. Economic barriers and indirect benefits from the implementation of technologies are analyzed.

Keywords: phosphorus, sewage sludge, struvite; crystallization, biological phosphorus removal, pyrolysis, magnetic separation; circular economy.

For citation: Dyagelev M.Yu. [Crystallization methods for extracting phosphorus from wastewater sediments] Upravlenie tekhnosferoi, 2026, vol. 9, issue 2, рр. 360–380. DOI: 10.35634/UdSU.2026.58.63.007. (In Russ.).

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About the Author

Dyagelev Mikhail Yurievich

Candidate of Technical Sciences, Associate Professor of the Department of Water Supply and Water Treatment, Federal State Budgetary Educational Institution of Higher Education Izhevsk State Technical University named after M.T. Kalashnikov, 426069, Studencheskaya Street, 7, Izhevsk, Russia. E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.

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