Development of affordable coagulant for intensification lighting natural waters

Authors

  • Тетяна Олександрівна Шаблій National Technical University of Ukraine “KPI” Peremogy av. 37, buld. №4; 03056 Kyiv, Ukraine, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2012.5537

Keywords:

Coagulant, water lightening, aluminum hydroxochlorides

Abstract

The main source of water supply in Ukraine is the Dnieper River, where water has high color and turbidity rates, and domestic coagulants, even at high doses, cannot provide corresponding lightening and decolouration. Thus the development of effective affordable coagulants is an important task. In the article the method of synthesis of aluminum hydroxychlorides of available sodium hydroxyaluminate and its treatment with calcium and magnesium salts and further dissolution of obtained hydroxyaluminates hydrochloric acid are suggested. It is possible to use the solutions of sodium hydroxyaluminate of different concentrations, because when using calcium and magnesium salts it is possible to separate sodium hydroxyaluminate from dilute solutions. This is important when using the wastes of aluminum alkaline etching. Calcium and magnesium hydroxyaluminates react readily with hydrochloric acid solution forming aluminum hydroxychlorides. In the case of magnesium usage 1/3 of aluminum hydroxochloride is formed, and in the case of calcium usage 2/3 of aluminim hydroxochloride is formed. It is suggested to obtain highly basic 5/6 aluminum hydroxochloride by interaction of aluminum metal with 2/3 of aluminum hydroxochloride.

The efficiency of obtained coagulants was studied on the Dnieper River water sampled in different seasons. As it is seen from the results, efficiency of lightening at sedimentation increases with the increase of the initial turbidity of natural waters, as well as with the increase of dose of coagulant. The cleaning efficiency also increases with the basicity increase of coagulants

Author Biography

Тетяна Олександрівна Шаблій, National Technical University of Ukraine “KPI” Peremogy av. 37, buld. №4; 03056 Kyiv, Ukraine

PhD, associated professor

Department of Ecology and Plant Polymers Technology

References

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Published

2012-12-12

How to Cite

Шаблій, Т. О. (2012). Development of affordable coagulant for intensification lighting natural waters. Eastern-European Journal of Enterprise Technologies, 6(6(60), 6–11. https://doi.org/10.15587/1729-4061.2012.5537

Issue

Vol. 6 No. 6(60) (2012): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

License

Copyright (c) 2014 Тетяна Олександрівна Шаблій

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