Precipitation of ammonium ions from a mixture of domestic and mineral wastewater
https://doi.org/10.31660/2782-232X-2026-2-100-112
EDN: UCCWQW
Abstract
Thermal resorts face the challenge of disposing of not only domestic wastewater but also significant volumes of used mineral water. The most critical aspect is the removal of ammonium ions (NH4) from the water, as they subsequently lead to eutrophication of water bodies. A study on the combined treatment of domestic and mineral wastewater was conducted using chemical precipitation, resulting in the production of a complex agricultural fertilizer – struvite. Optimal conditions and reagent doses (sodium hydrophosphate, magnesium chloride, and sodium hydroxide) were determined to reduce ammonium ion concentration in the water to established regulatory standards and achieve a struvite yield of 5.35 g/dm3. Diluting ammonium-containing domestic wastewater with mineral water reduced magnesium chloride consumption by 80%. A technical and economic analysis indicated that cost savings could amount to 3.000–4.000 rubles per m3 of treated water, and the profit generated from selling the fertilizer could partially offset wastewater disposal coasts.
About the Author
A. M. Fugaeva
Industrial University of Tyumen, Tyumen
Russian Federation
Russian Federation
Anastasiia M. Fugaeva, Assistant in the Department of Engineering Systems and Structures
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Review
For citations:
Fugaeva A.M. Precipitation of ammonium ions from a mixture of domestic and mineral wastewater. Architecture, Construction, Transport. 2026;6(2):100-113. (In Russ.) https://doi.org/10.31660/2782-232X-2026-2-100-112. EDN: UCCWQW
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