Plant-wide modelling of phosphorus transformations in wastewater treatment systems: Impacts of control and operational strategies

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Plant-wide modelling of phosphorus transformations in wastewater treatment systems : Impacts of control and operational strategies. / Solon, K.; Flores-Alsina, X; Kazadi Mbamba, Christian; Ikumi, D.; Volcke, E. I. P; Vaneeckhaute, Céline; Ekama, G.; Vanrolleghem, P A; Batstone, D. J.; Gernaey, K. V.; Jeppsson, U.

In: Water Research, Vol. 113, 15.04.2017, p. 97-110.

Research output: Contribution to journalArticle

Harvard

Solon, K, Flores-Alsina, X, Kazadi Mbamba, C, Ikumi, D, Volcke, EIP, Vaneeckhaute, C, Ekama, G, Vanrolleghem, PA, Batstone, DJ, Gernaey, KV & Jeppsson, U 2017, 'Plant-wide modelling of phosphorus transformations in wastewater treatment systems: Impacts of control and operational strategies', Water Research, vol. 113, pp. 97-110. https://doi.org/10.1016/j.watres.2017.02.007

APA

Solon, K., Flores-Alsina, X., Kazadi Mbamba, C., Ikumi, D., Volcke, E. I. P., Vaneeckhaute, C., Ekama, G., Vanrolleghem, P. A., Batstone, D. J., Gernaey, K. V., & Jeppsson, U. (2017). Plant-wide modelling of phosphorus transformations in wastewater treatment systems: Impacts of control and operational strategies. Water Research, 113, 97-110. https://doi.org/10.1016/j.watres.2017.02.007

CBE

Solon K, Flores-Alsina X, Kazadi Mbamba C, Ikumi D, Volcke EIP, Vaneeckhaute C, Ekama G, Vanrolleghem PA, Batstone DJ, Gernaey KV, Jeppsson U. 2017. Plant-wide modelling of phosphorus transformations in wastewater treatment systems: Impacts of control and operational strategies. Water Research. 113:97-110. https://doi.org/10.1016/j.watres.2017.02.007

MLA

Vancouver

Author

Solon, K. ; Flores-Alsina, X ; Kazadi Mbamba, Christian ; Ikumi, D. ; Volcke, E. I. P ; Vaneeckhaute, Céline ; Ekama, G. ; Vanrolleghem, P A ; Batstone, D. J. ; Gernaey, K. V. ; Jeppsson, U. / Plant-wide modelling of phosphorus transformations in wastewater treatment systems : Impacts of control and operational strategies. In: Water Research. 2017 ; Vol. 113. pp. 97-110.

RIS

TY - JOUR

T1 - Plant-wide modelling of phosphorus transformations in wastewater treatment systems

T2 - Impacts of control and operational strategies

AU - Solon, K.

AU - Flores-Alsina, X

AU - Kazadi Mbamba, Christian

AU - Ikumi, D.

AU - Volcke, E. I. P

AU - Vaneeckhaute, Céline

AU - Ekama, G.

AU - Vanrolleghem, P A

AU - Batstone, D. J.

AU - Gernaey, K. V.

AU - Jeppsson, U.

PY - 2017/4/15

Y1 - 2017/4/15

N2 - The objective of this paper is to report the effects that control/operational strategies may have on plant-wide phosphorus (P) transformations in wastewater treatment plants (WWTP). The development of a new set of biological (activated sludge, anaerobic digestion), physico-chemical (aqueous phase, precipitation, mass transfer) process models and model interfaces (between water and sludge line) were required to describe the required tri-phasic (gas, liquid, solid) compound transformations and the close interlinks between the P and the sulfur (S) and iron (Fe) cycles. A modified version of the Benchmark Simulation Model No. 2 (BSM2) (open loop) is used as test platform upon which three different operational alternatives (A1, A2, A3) are evaluated. Rigorous sensor and actuator models are also included in order to reproduce realistic control actions. Model-based analysis shows that the combination of an ammonium (SNHX ) and total suspended solids (XTSS) control strategy (A1) better adapts the system to influent dynamics, improves phosphate (SPO4 ) accumulation by phosphorus accumulating organisms (XPAO) (41%), increases nitrification/denitrification efficiency (18%) and reduces aeration energy (Eaeration) (21%). The addition of iron XFeCl3 ) for chemical P removal (A2) promotes the formation of ferric oxides (XHFO−H, XHFO−L), phosphate adsorption (XHFO−H,P, XHFO−L,P), co-precipitation (XHFO−H,P,old, XHFO−L,P,old) and consequently reduces the P levels in the effluent (from 2.8 to 0.9 g P.m−3). This also has an impact on the sludge line, with hydrogen sulfide production (GH2S) reduced (36%) due to iron sulfide (XFeS) precipitation. As a consequence, there is also a slightly higher energy production (Eproduction) from biogas. Lastly, the inclusion of a stripping and crystallization unit (A3) for P recovery reduces the quantity of P in the anaerobic digester supernatant returning to the water line and allows potential struvite (XMgNH4PO4 ) recovery ranging from 69 to 227 kg.day−1 depending on: (1) airflow (Qstripping); and, (2) magnesium (QMg(OH)2 ) addition. All the proposed alternatives are evaluated from an environmental and economical point of view using appropriate performance indices. Finally, some deficiencies and opportunities of the proposed approach when performing (plant-wide) wastewater treatment modelling/engineering projects are discussed.

AB - The objective of this paper is to report the effects that control/operational strategies may have on plant-wide phosphorus (P) transformations in wastewater treatment plants (WWTP). The development of a new set of biological (activated sludge, anaerobic digestion), physico-chemical (aqueous phase, precipitation, mass transfer) process models and model interfaces (between water and sludge line) were required to describe the required tri-phasic (gas, liquid, solid) compound transformations and the close interlinks between the P and the sulfur (S) and iron (Fe) cycles. A modified version of the Benchmark Simulation Model No. 2 (BSM2) (open loop) is used as test platform upon which three different operational alternatives (A1, A2, A3) are evaluated. Rigorous sensor and actuator models are also included in order to reproduce realistic control actions. Model-based analysis shows that the combination of an ammonium (SNHX ) and total suspended solids (XTSS) control strategy (A1) better adapts the system to influent dynamics, improves phosphate (SPO4 ) accumulation by phosphorus accumulating organisms (XPAO) (41%), increases nitrification/denitrification efficiency (18%) and reduces aeration energy (Eaeration) (21%). The addition of iron XFeCl3 ) for chemical P removal (A2) promotes the formation of ferric oxides (XHFO−H, XHFO−L), phosphate adsorption (XHFO−H,P, XHFO−L,P), co-precipitation (XHFO−H,P,old, XHFO−L,P,old) and consequently reduces the P levels in the effluent (from 2.8 to 0.9 g P.m−3). This also has an impact on the sludge line, with hydrogen sulfide production (GH2S) reduced (36%) due to iron sulfide (XFeS) precipitation. As a consequence, there is also a slightly higher energy production (Eproduction) from biogas. Lastly, the inclusion of a stripping and crystallization unit (A3) for P recovery reduces the quantity of P in the anaerobic digester supernatant returning to the water line and allows potential struvite (XMgNH4PO4 ) recovery ranging from 69 to 227 kg.day−1 depending on: (1) airflow (Qstripping); and, (2) magnesium (QMg(OH)2 ) addition. All the proposed alternatives are evaluated from an environmental and economical point of view using appropriate performance indices. Finally, some deficiencies and opportunities of the proposed approach when performing (plant-wide) wastewater treatment modelling/engineering projects are discussed.

KW - Benchmarking

KW - Control strategies

KW - Multiple mineral precipitation

KW - Nutrient removal

KW - Physico-chemical modelling

KW - Struvite recovery

UR - http://www.scopus.com/inward/record.url?scp=85012117002&partnerID=8YFLogxK

U2 - 10.1016/j.watres.2017.02.007

DO - 10.1016/j.watres.2017.02.007

M3 - Article

C2 - 28199867

AN - SCOPUS:85012117002

VL - 113

SP - 97

EP - 110

JO - Water Research

JF - Water Research

SN - 1879-2448

ER -