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Start‐up Strategy and Bacterial Community Analysis of SNAD Process for Treating Anaerobic Digester Liquor of Swine Wastewater (ADLSW) in a Continuous‐Flow Biofilm Reactor

Lookup NU author(s): Professor David WernerORCiD



This is the authors' accepted manuscript of an article that has been published in its final definitive form by Wiley-Blackwell Publishing, Inc., 2020.

For re-use rights please refer to the publisher's terms and conditions.


Simultaneous partial nitrification, anammox and denitrification (SNAD) process for treating anaerobic digester liquor of swine wastewater (ADLSW) was achieved successfully in a continuous‐flow biofilm reactor by gradually increasing the influent ammonium (NH4+‐N) concentration whilst controlling the low dissolved oxygen (DO) concentration. After 180 days of operation, the average removal efficiencies of NH4+‐N, total nitrogen (TN) and COD were 61.59%, 55.76%, and 75.21% respectively. Also, the average conversion efficiency () of total effluent nitrite and nitrate production to ammonia consumption was kept at about 0.053 at the last stage (days 181‐218). Anaerolineaceae (26.92%), Candidatus Brocadia (3.96%), Candidatus‐Kuenenia (4.69%), Armatimonadetes‐norank (4.25%), Limnobacter(4.15%), Xanthomonadaceae (3.07%) and Ignavibacterium (2.87%) were the dominant genera in the SNAD system for treating ADLSW. The quantitative polymerase chain reaction (qPCR) results further confirmed that the co‐existence and enrichment of anammox bacteria, ammonium oxidizing bacteria (AOB), and denitrifying bacteria (HB) in the bioreactor.

Publication metadata

Author(s): Xin X, Liu Q, Werner D, Lu H, Qin J

Publication type: Article

Publication status: Published

Journal: Water and Environment Journal

Year: 2020

Volume: 34

Issue: S1

Pages: 661-671

Print publication date: 01/12/2020

Online publication date: 20/03/2020

Acceptance date: 20/03/2020

Date deposited: 06/06/2020

ISSN (print): 1747-6585

ISSN (electronic): 1747-6593

Publisher: Wiley-Blackwell Publishing, Inc.


DOI: 10.1111/wej.12568


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