Impact of worm predation on pseudo-steady-state of the circulating fluidized bed biofilm reactor

Ming Li; George Nakhla; Jesse Zhu

doi:10.1016/j.biortech.2012.10.069

Impact of worm predation on pseudo-steady-state of the circulating fluidized bed biofilm reactor

Ming Li
, George Nakhla^*
, Jesse Zhu

^*Corresponding author for this work

Research output: Journal Publication › Article › peer-review

15 Citations (Scopus)

Abstract

This paper studies integrated simultaneous carbon and nitrogen removal as well as worm predation, in a circulating fluidized bed biofilm reactor (CFBBR) operated with an anoxic-aerobic bioparticle recirculation. A lab-scale CFBBR with a 8.5-liter reaction zone comprising 2L anoxic and 6.5L aerobic compartments was designed to evaluate the aquatic Oligochaete worm effect. Long-term (200days) performance showed that stable and high-rate chemical oxygen demand (COD) with sodium acetate as the carbon source and total nitrogen (NH₄Cl as nitrogen source) conversions were achieved simultaneously, with low sludge production of 0.082g VSS (volatile suspended solids) g COD^-1 at pseudo-steady-state. Worm predation, which causes considerable sludge reduction of the bioparticle process, was studied. The results proved that the worm predation has a significant impact on the pseudo-steady-state performance of the CFBBR, decreasing biomass yield, decreasing oxygen concentration and increasing expanded bed height.

Original language	English
Pages (from-to)	281-289
Number of pages	9
Journal	Bioresource Technology
Volume	128
DOIs	https://doi.org/10.1016/j.biortech.2012.10.069
Publication status	Published - Jan 2013
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 14 Life Below Water

Free Keywords

Bioparticle circulation
Circulating fluidized bed biofilm reactor (CFBBR)
Self-balancing micro-community
Worm predation

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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10.1016/j.biortech.2012.10.069

Cite this

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title = "Impact of worm predation on pseudo-steady-state of the circulating fluidized bed biofilm reactor",

abstract = "This paper studies integrated simultaneous carbon and nitrogen removal as well as worm predation, in a circulating fluidized bed biofilm reactor (CFBBR) operated with an anoxic-aerobic bioparticle recirculation. A lab-scale CFBBR with a 8.5-liter reaction zone comprising 2L anoxic and 6.5L aerobic compartments was designed to evaluate the aquatic Oligochaete worm effect. Long-term (200days) performance showed that stable and high-rate chemical oxygen demand (COD) with sodium acetate as the carbon source and total nitrogen (NH4Cl as nitrogen source) conversions were achieved simultaneously, with low sludge production of 0.082g VSS (volatile suspended solids) g COD-1 at pseudo-steady-state. Worm predation, which causes considerable sludge reduction of the bioparticle process, was studied. The results proved that the worm predation has a significant impact on the pseudo-steady-state performance of the CFBBR, decreasing biomass yield, decreasing oxygen concentration and increasing expanded bed height.",

keywords = "Bioparticle circulation, Circulating fluidized bed biofilm reactor (CFBBR), Self-balancing micro-community, Worm predation",

author = "Ming Li and George Nakhla and Jesse Zhu",

note = "Funding Information: The authors gratefully acknowledge Trojan Technologies, Canada , the Natural Science and Engineering Research Council of Canada (NSERC) , and the Ontario Center of Excellence (OCE), Canada for their financial support. ",

year = "2013",

month = jan,

doi = "10.1016/j.biortech.2012.10.069",

language = "English",

volume = "128",

pages = "281--289",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Impact of worm predation on pseudo-steady-state of the circulating fluidized bed biofilm reactor

AU - Li, Ming

AU - Nakhla, George

AU - Zhu, Jesse

N1 - Funding Information: The authors gratefully acknowledge Trojan Technologies, Canada , the Natural Science and Engineering Research Council of Canada (NSERC) , and the Ontario Center of Excellence (OCE), Canada for their financial support.

PY - 2013/1

Y1 - 2013/1

N2 - This paper studies integrated simultaneous carbon and nitrogen removal as well as worm predation, in a circulating fluidized bed biofilm reactor (CFBBR) operated with an anoxic-aerobic bioparticle recirculation. A lab-scale CFBBR with a 8.5-liter reaction zone comprising 2L anoxic and 6.5L aerobic compartments was designed to evaluate the aquatic Oligochaete worm effect. Long-term (200days) performance showed that stable and high-rate chemical oxygen demand (COD) with sodium acetate as the carbon source and total nitrogen (NH4Cl as nitrogen source) conversions were achieved simultaneously, with low sludge production of 0.082g VSS (volatile suspended solids) g COD-1 at pseudo-steady-state. Worm predation, which causes considerable sludge reduction of the bioparticle process, was studied. The results proved that the worm predation has a significant impact on the pseudo-steady-state performance of the CFBBR, decreasing biomass yield, decreasing oxygen concentration and increasing expanded bed height.

AB - This paper studies integrated simultaneous carbon and nitrogen removal as well as worm predation, in a circulating fluidized bed biofilm reactor (CFBBR) operated with an anoxic-aerobic bioparticle recirculation. A lab-scale CFBBR with a 8.5-liter reaction zone comprising 2L anoxic and 6.5L aerobic compartments was designed to evaluate the aquatic Oligochaete worm effect. Long-term (200days) performance showed that stable and high-rate chemical oxygen demand (COD) with sodium acetate as the carbon source and total nitrogen (NH4Cl as nitrogen source) conversions were achieved simultaneously, with low sludge production of 0.082g VSS (volatile suspended solids) g COD-1 at pseudo-steady-state. Worm predation, which causes considerable sludge reduction of the bioparticle process, was studied. The results proved that the worm predation has a significant impact on the pseudo-steady-state performance of the CFBBR, decreasing biomass yield, decreasing oxygen concentration and increasing expanded bed height.

KW - Bioparticle circulation

KW - Circulating fluidized bed biofilm reactor (CFBBR)

KW - Self-balancing micro-community

KW - Worm predation

UR - https://www.scopus.com/pages/publications/84870155898

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DO - 10.1016/j.biortech.2012.10.069

M3 - Article

C2 - 23201510

AN - SCOPUS:84870155898

SN - 0960-8524

VL - 128

SP - 281

EP - 289

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Impact of worm predation on pseudo-steady-state of the circulating fluidized bed biofilm reactor

Abstract

UN SDGs

Free Keywords

ASJC Scopus subject areas

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