Ammonium ion (NH4+) removal from secondary effluent through ion-exchange: the effect of biological activity and the presence of other cations

Abstract

This paper is concerned with ion-exchange removal packed bed studies carried out with secondary effluent on a sewage treatment works. The work was carried out over a five month secondment period with Severn Trent Water, situated in the midlands of England. The objective of the work was to compare previous studies with clinoptilolite using synthetic wastewaters, de-ionised water and appropriate salts, with typical process water found on a sewage treatment plant. Experimental results have shown ammonium removal of 90% and greater of the influent NH4+ concentrations. In this report it has been shown that the biological activity of nitrification takes place during the upflow processing of wastewater through the packed beds. It is also shown how other cations cause an inhibitory effect on the ion-exchange process whereas biological activity leads to improved efficiency.

Ammonium removal from aqueous solutions by using natural Chinese (Chende) zeolite as adsorbent

“…In such a situation, ion-exchange offers an alternative method for the removal of NH 4 + . Ion-exchange has been in use in various types of wastewater treatment for the removal of NH 4 + [3][4][5][6][7][8][9][10]. However, ion-exchange processes using organic resins as exchanger are very expensive.…”

Effect of Fe3O4 addition on removal of ammonium by zeolite NaA

“…Zeolite has been researched for decades for the removal of ammonium ions because of large specific surface area, high cation exchange capacity (CEC) and great affinity for NH þ 4 [4]. In previous research, the utilization of zeolite for the removal of NH þ 4 has proven to be a competitive and effective method [1,3,[5][6][7][8][9][10][11][12][13][14]. In addition, zeolite derived from different base sources has been utilized for the removal of ammonium.…”

Notice of Retraction: Thermodynamics Study on Removing Nitrate Nitrogen from Wastewater with Anion Exchange Resins

“…Ryan Mcveign [6] proposed that, Biological methods remove nitrate wastewater when the demanding microbiological, low efficiency and poor concentration cannot adapt to change and the impact of large load. And very little organic carbon in wastewater, need to add enough carbon source for denitrification process of electron donor.…”