Pilot-scale enrichment of anammox biofilm using secondary effluent as source water

Enough biomass of anaerobic ammonium oxidation (anammox) bacteria is essential for maintaining a stable partial nitrification/anammox (PN/A) wastewater treatment system. Present enrichment procedures are mainly labor-intensive and inconvenient for up-scaling. A simplified procedure was developed for...

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Autores principales:	Runxian Tao, Xingcan Zheng, Xingfang Guo, Mai Li, Shifeng Shen, Min Yang, Yongli Sun, Fansong Wu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	anammox biofilm enrichment procedure large scale microbial community secondary effluent Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/9f0d1f35e78846b5b60dae31d705636a
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spelling	oai:doaj.org-article:9f0d1f35e78846b5b60dae31d705636a2021-11-06T10:48:08ZPilot-scale enrichment of anammox biofilm using secondary effluent as source water0273-12231996-973210.2166/wst.2021.015https://doaj.org/article/9f0d1f35e78846b5b60dae31d705636a2021-02-01T00:00:00Zhttp://wst.iwaponline.com/content/83/4/894https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Enough biomass of anaerobic ammonium oxidation (anammox) bacteria is essential for maintaining a stable partial nitrification/anammox (PN/A) wastewater treatment system. Present enrichment procedures are mainly labor-intensive and inconvenient for up-scaling. A simplified procedure was developed for enrichment of anammox biofilm by using secondary effluent as source water with no supplement of mineral medium and unstrict control of influent dissolved oxygen (DO). Anammox biofilm was successfully enriched in two pilot-scale reactors (XQ-cul and BT-cul) within 250 and 120 days, respectively. The specific anammox activity increased rapidly during the last 2 months in both reactors and achieved 2.54 g N2-N/(m2·d) in XQ-cul and 1.61 g N2-N/(m2·d) in BT-cul. Similar microbial diversity and community structure were obtained in the two reactors despite different secondary effluent being applied from two wastewater treatment plants. Anaerobic ammonium oxidizing bacteria genera abundance reached up to 37.4% and 43.1% in XQ-cul and BT-cul biofilm, respectively. Candidatus Brocadia and Ca. Kuenenia dominated the enriched biofilm. A negligible adverse effect of residual organics and influent DO was observed by using secondary effluent as source water. This anammox biofilm enrichment procedure could facilitate the inoculation and/or bio-augmentation of large-scale mainstream PN/A reactors.Runxian TaoXingcan ZhengXingfang GuoMai LiShifeng ShenMin YangYongli SunFansong WuIWA Publishingarticleanammoxbiofilmenrichment procedurelarge scalemicrobial communitysecondary effluentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 4, Pp 894-905 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anammox biofilm enrichment procedure large scale microbial community secondary effluent Environmental technology. Sanitary engineering TD1-1066
spellingShingle	anammox biofilm enrichment procedure large scale microbial community secondary effluent Environmental technology. Sanitary engineering TD1-1066 Runxian Tao Xingcan Zheng Xingfang Guo Mai Li Shifeng Shen Min Yang Yongli Sun Fansong Wu Pilot-scale enrichment of anammox biofilm using secondary effluent as source water
description	Enough biomass of anaerobic ammonium oxidation (anammox) bacteria is essential for maintaining a stable partial nitrification/anammox (PN/A) wastewater treatment system. Present enrichment procedures are mainly labor-intensive and inconvenient for up-scaling. A simplified procedure was developed for enrichment of anammox biofilm by using secondary effluent as source water with no supplement of mineral medium and unstrict control of influent dissolved oxygen (DO). Anammox biofilm was successfully enriched in two pilot-scale reactors (XQ-cul and BT-cul) within 250 and 120 days, respectively. The specific anammox activity increased rapidly during the last 2 months in both reactors and achieved 2.54 g N2-N/(m2·d) in XQ-cul and 1.61 g N2-N/(m2·d) in BT-cul. Similar microbial diversity and community structure were obtained in the two reactors despite different secondary effluent being applied from two wastewater treatment plants. Anaerobic ammonium oxidizing bacteria genera abundance reached up to 37.4% and 43.1% in XQ-cul and BT-cul biofilm, respectively. Candidatus Brocadia and Ca. Kuenenia dominated the enriched biofilm. A negligible adverse effect of residual organics and influent DO was observed by using secondary effluent as source water. This anammox biofilm enrichment procedure could facilitate the inoculation and/or bio-augmentation of large-scale mainstream PN/A reactors.
format	article
author	Runxian Tao Xingcan Zheng Xingfang Guo Mai Li Shifeng Shen Min Yang Yongli Sun Fansong Wu
author_facet	Runxian Tao Xingcan Zheng Xingfang Guo Mai Li Shifeng Shen Min Yang Yongli Sun Fansong Wu
author_sort	Runxian Tao
title	Pilot-scale enrichment of anammox biofilm using secondary effluent as source water
title_short	Pilot-scale enrichment of anammox biofilm using secondary effluent as source water
title_full	Pilot-scale enrichment of anammox biofilm using secondary effluent as source water
title_fullStr	Pilot-scale enrichment of anammox biofilm using secondary effluent as source water
title_full_unstemmed	Pilot-scale enrichment of anammox biofilm using secondary effluent as source water
title_sort	pilot-scale enrichment of anammox biofilm using secondary effluent as source water
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/9f0d1f35e78846b5b60dae31d705636a
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_version_	1718443812821401600

Pilot-scale enrichment of anammox biofilm using secondary effluent as source water

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