Research processes of ion exchange removal phosphates

Authors

  • М. Д. Гомеля Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», м. Київ, Ukraine https://orcid.org/0000-0003-1165-7545
  • A. I. Петриченко Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», м. Київ, Ukraine https://orcid.org/0000-0002-0499-1468
  • Г. Г. Трохименко Національний університет суднобудування імені а мірала Макарова, м. Миколаїв, Ukraine https://orcid.org/0000-0002-0835-3551
  • Я. П. Мартинюк Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», м. Київ, Ukraine

DOI:

https://doi.org/10.20535/2218-93002112017121427

Keywords:

ion exchange, phosphate, sulfate, struvite, ammonium chloride

Abstract

Phosphorus is one of the products of metabolism or degradation of microbial organisms, but its excess leads to accelerated eutrophication. The primary cause of eutrophication – is excessive concentration of nutrients in the water, including phosphates. Among the existing methods of water purification from phosphates ion exchange is the most effective and cheap one. This method is advantageous because of the possibility of processing of the regeneration solutions to produce liquid fertilizers or other useful products. Highly basic anionite AB-17-8 and low basic anionite Dowex Marathon WBA are used as the ion exchange materials. Distilled and tap water close to the characteristics of wastewater of Bortnichy aeration station was used as the medium . It was shown that the exchange capacity of anionite Dowex Marathon WBA for phosphates is low and its use for the removal of phosphates is inappropriate. The highly basic anionite AB-17-8 in chloride and in alkaline form provides effective removal of phosphates from model solutions. The influence of competing compounds of sulfate and chloride in tap water on efficiency of phosphate anions extraction was studied. Regeneration processes were investigated using solutions of sodium or ammonium chlorides in concentration of 10-15%. Method for the removal of interfering compounds of sulfates from regeneration solutions in the form of gypsum is proposed, which will allow re-use of these solutions for the regeneration of the anion exchanger.

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Published

2017-05-10

Issue

Vol. 21 No. 1 (2017)

Section

Статті

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Copyright (c) 2020 М. Д. Гомеля, A. I. Петриченко, Г. Г. Трохименко, Я. П. Мартинюк

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