Affordable Access

Access to the full text

Bioaugmentation of Nitrifying Microorganisms to Increase the Efficiency of the Oxidation of Nitrogen Compounds during Wastewater Biofiltration

Authors
  • Vdovina, T. V.1
  • Sirotkin, A. S.1
  • Kobeleva, Y. V.1
  • Gorshkova, E. S.1
  • 1 Tupolev Kazan National Research Technological University, Kazan, 420015, Russia , Kazan (Russia)
Type
Published Article
Journal
Applied Biochemistry and Microbiology
Publisher
Pleiades Publishing
Publication Date
Dec 01, 2020
Volume
56
Issue
9
Pages
948–955
Identifiers
DOI: 10.1134/S0003683820090094
Source
Springer Nature
Keywords
License
Yellow

Abstract

The efficiency of the bioaugmentation of nitrifying bacteria into biofilm microbiocenosis with 30 days of continuous biofiltration of a solution of municipal model wastewater has been assessed. The laboratory setup consisted of two parallel operating biofilters. Cultures of ammonium-oxidizing and nitrite-oxidizing bacteria of the Nitrobacter genus were sequentially introduced into one of them after the initial period. It was established that the bioaugmentation of ammonium-oxidizing bacteria into the biofilm microbiocenosis led to an increase in the efficiency of the removal of ammonium nitrogen by an average of 1.6 times as compared to the control biofilter. The subsequent bioaugmentation of nitrite-oxidizing bacteria caused an increase in the amount of nitrates in purified water by an average of two times. The bioaugmentation of nitrifying bacteria in the biofilm microbiocenosis intensified the nitrification process. The quantitative and qualitative identification of microorganisms via fluorescence in situ hybridization showed an increased number of nitrifying microorganisms in the biofilm of the experimental biofilter and a correlation between this characteristic and the biotransformation of nitrogen compounds, which confirms the efficiency of the introduction of microorganisms into the biofilm.

Report this publication

Statistics

Seen <100 times