Journal of Microbial & Biochemical Technology

Mainstream partial nitrification-anammox process in domestic and municipal wastewater treatment in Russia

Joint Event on 4^th World Congress and Expo on Applied Microbiology & 2^nd International Conference on Food Microbiology

November 29-December 01, 2017 Madrid, Spain

Alla Nozhevnikova, Yury Litti, Katya Botchkova, Gennadiy Zubov and Michail Zubov

Winogradsky Institute of Microbiology, Federal Research Center of Biotechnology of the Russian Academy of Sciences, Russia
ECOS Company, Russia

Scientific Tracks Abstracts: J Microb Biochem Technol

Abstract:

Mainstream partial nitrification �?? anammox (PN/A) process is at the peak of interest for providing sustainable nitrogen removal from domestic and municipal wastewater. The interactions among key microbial groups: ammonium-oxidizing, nitriteoxidizing, anammox, and heterotrophic bacteria are critically overviewed in a recent publication. Reactor design, flow pattern, carriers, oxic-anoxic conditions, pH, temperature are essential for an effective cooperation of key microbial groups. The principles of new PN/A technology and the design of full-scale prefabricated 100-1000 m3/day "BCH-ECOS" wastewater treatment plants (wwtps) were based on the results of microbiological studies and semi-pilot trials. The new technology involves chemically enhanced pretreatment of the mainstream for a significant part of carbon and phosphorus removal. The brush-shaped carrier is applied at all steps of biological treatment for microorganisms immobilization and biofilm formation. Wastewater with high ammonia concentration comes into the denitrificator (first step), which also receives water that is high in nitrate and nitrite by means of recirculation from the aeration tank (second step). N2 is produced by anammox- and heterotrophic denitrifying bacteria in denitrificator. Three genera and new species of anammox-bacteria were detected in denutrificator biofilms. The quality of the treated water exceeds the requirements for discharging into water bodies. More than 20 "BCH-ECOS" plants are in operation in different regions of Russia since 2009. Wwtp �??Megapolis�?� (5000-100000 m3/day) is developed based on the new technology for municipal wastewater treatment. All wwtps are isolated from the environment and keep a constant temperature. This work is supported by the Ministry of Education and Science RF (unique identifier RFMEFI60417X0190).

Biography :

Alla Nozhevnikova has completed her Doctoral degree at Winogradsky Institute of Microbiology RAS and became Professor at Moscow State University in 1994. She is the Head of Laboratory of Microbiology of Anthropogenic Habitats. She has published more than 150 papers in reputed journals and is a member of three Scientific Councils.