Study of using the anionites in low-waste processes of water purification from phosphates
DOI:
https://doi.org/10.15587/1729-4061.2017.101400Keywords:
ion exchange, anionite, selectivity, phosphate-ions, sulphate-ions, ammonium chloride, regeneration of ioniteAbstract
Among the existing methods for removing the phosphates from water, the most effective and cheap is the method of ion exchange. The advantage of this method is the possibility to process regeneration solutions with obtaining the liquid fertilizers or other useful products.
The processes of sorption of phosphates on the weak-base and strong-base anionites are investigated. We examined the dynamics of sorption of phosphates from the model solutions in the distilled and tap water depending on the form of ionite. The influence is established of the competing compounds of sulphates and chlorides in tap water on the effectiveness of removal of phosphate-anions. We explored the processes of regeneration of strong-base anionite in the phosphate and phosphate-sulfate form. The regeneration of anionite in the phosphate form was carried out with the 10 and 15 % solutions of sodium chloride and the 10 % solution of ammonium chloride. In order to regenerate anionite in the sulphate-phosphate form, the solutions of sodium chloride were used at concentration 10 %. The regeneration solutions contained sodium phosphate or ammonium phosphate, sodium phosphate-sulphate, respectively.
We established that the effective sedimentation of phosphates occurs at molar ratio (NH4)3PO4 and MgCl2 1:1, at optimum value pH=9. The optimal dosage of magnesium chloride and the value of pH are determined. This will provide 99.99 % sedimentation of phosphates from the regeneration solutions in the form of insoluble sediment. We proposed a method for removal from the regeneration solutions of the interfering compounds of sulphates in the form of gypsum, which will make it possible to repeatedly use these solutions for the regeneration of anionite. The essence of this method is the addition of chloride calcium to the solution, resulting in gypsum falling out into the sediment. The excess of calcium is removed in the form of calcium carbonate when soda is added.References
- Cornel, P., Schaum, C. (2009). Phosphorus recovery from wastewater: needs, technologies and costs. Water Science & Technology, 59 (6), 1069. doi: 10.2166/wst.2009.045
- Prokopchuk, O. I., Grubinko, V. V. (2013). Fosfaty u vodnykh ekosystemakh. Naukovi zapysky Ternopil's'koho natsional'noho pedahohichnoho universytetu imeni Volodymyra Hnatyuka. Ser. Biolohiya, 3 (56), 78–85.
- Van der Perk, M. (2013). Soil and water contamination. CRC Press, 428.
- Grady Jr, C. L., Daigger, G. T., Love, N. G., Filipe, C. D. (2011). Biological wastewater treatment. CRC Press, 1022.
- Khentse, M., Armoes, P., Lia-Kur-Yasen, Y. (2009). Ochistka stochnykh vod. Moscow: Mir, 480.
- Baker, R. W. (2012). Membrane technology and applications. Wiley, 588. doi: 10.1002/9781118359686
- Seminskaya, O. O., Balakina, M. N., Kucheruk, D. D., Goncharuk, V. V. (2016). Main regularities of reverse-osmotic water purification of phosphates. Journal of Water Chemistry and Technology, 38 (1), 39–44. doi: 10.3103/s1063455x16010070
- Trus, I. M., Gomelia, M. D., Radovenchik, V. M. (2013). Vplyv poperednogo mekhanichnogo doochyshchennia vody na efektyvnist zvorotnoosmotychnogo oprisnennia vody. Visnyk Skhidnoukrainskogo natsionalnogo universytetu imeni Volodymera Dalia, 9 (198), 197–202.
- Bhuiyan, M. I. H., Mavinic, D. S., Koch, F. A. (2008). Phosphorus recovery from wastewater through struvite formation in fluidized bed reactors: a sustainable approach. Water Science & Technology, 57 (2), 175. doi: 10.2166/wst.2008.002
- Gomelya, M., Trokhymenko, G., Shabliy, T. (2016). Low-waste ion exchange technology of extraction of nitrogen compounds from water. Eastern-European Journal of Enterprise Technologies, 3 (10 (81)), 18–23. doi: 10.15587/1729-4061.2016.72328
- Trus, I. N., Gomelia, N. D., Shablii, T. A. (2014). Razdelenie khloridov I sulfatof pri ionoobmennom obezsolivanii vody. Metalurgicheskaia i gornorudnaia promyshlennost, 5, 119–122.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 Nikolai Gomelya, Alona Petrychenko, Anna Trokhimenko, Yana Martyniuk
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
