Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes

Cristina E. Almeida-Naranjo; Patricio J. Espinoza-Montero; Marcelo I. Muñoz-Rodríguez; Cristina A. Villamar-Ayala

doi:10.1007/s11270-017-3427-0

Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes

Cristina E. Almeida-Naranjo, Patricio J. Espinoza-Montero, Marcelo I. Muñoz-Rodríguez, Cristina A. Villamar-Ayala

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Hydraulic retention time (HRT) influence improving sludge flocculation with adding the polyelectrolytes (non-ionic, anionic, and cationic) was studied on an activated sludge (AS) system fed with synthetic domestic wastewater (SDW), dairy industry wastewater (DIW), and caramel industry wastewater (CIW). The sludge volumetric index, food/microorganism ratio (F/M), and mixed liquor volatile suspended solids at different HRTs (6, 8 and 10 h) were monitored on an experimental model. Results showed that both SDW and IW had the best sludge flocculation conditions at 8 h and 100 mL of non-ionic polyelectrolyte (0.2 mg L⁻¹). In addition, this phenomenon reached the organic matter removal efficiencies of 95.9, 95.7, and 94.2% for SDW, DIW, and CIW, respectively. Therefore, optimum HRT increased the organic matter removal efficiencies by 10%, sludge concentration by 37% (22–55%), and F/M ratio by 70%. Moreover, the polyelectrolytes used in AS improved the sludge flocculation by 2.9 times.

Original language	English
Article number	253
Journal	Water, Air, and Soil Pollution
Volume	228
Issue number	7
DOIs	https://doi.org/10.1007/s11270-017-3427-0
State	Published - Jul 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017, Springer International Publishing AG Switzerland.

Keywords

Activated sludge system
Industrial wastewater
Polyelectrolytes
Sludge characteristics
Sludge flocculation
Synthetic domestic wastewater

UN SDGs

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

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10.1007/s11270-017-3427-0

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title = "Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes",

abstract = "Hydraulic retention time (HRT) influence improving sludge flocculation with adding the polyelectrolytes (non-ionic, anionic, and cationic) was studied on an activated sludge (AS) system fed with synthetic domestic wastewater (SDW), dairy industry wastewater (DIW), and caramel industry wastewater (CIW). The sludge volumetric index, food/microorganism ratio (F/M), and mixed liquor volatile suspended solids at different HRTs (6, 8 and 10 h) were monitored on an experimental model. Results showed that both SDW and IW had the best sludge flocculation conditions at 8 h and 100 mL of non-ionic polyelectrolyte (0.2 mg L−1). In addition, this phenomenon reached the organic matter removal efficiencies of 95.9, 95.7, and 94.2% for SDW, DIW, and CIW, respectively. Therefore, optimum HRT increased the organic matter removal efficiencies by 10%, sludge concentration by 37% (22–55%), and F/M ratio by 70%. Moreover, the polyelectrolytes used in AS improved the sludge flocculation by 2.9 times.",

keywords = "Activated sludge system, Industrial wastewater, Polyelectrolytes, Sludge characteristics, Sludge flocculation, Synthetic domestic wastewater",

author = "Almeida-Naranjo, {Cristina E.} and Espinoza-Montero, {Patricio J.} and Mu{\~n}oz-Rodr{\'i}guez, {Marcelo I.} and Villamar-Ayala, {Cristina A.}",

note = "Publisher Copyright: {\textcopyright} 2017, Springer International Publishing AG Switzerland.",

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doi = "10.1007/s11270-017-3427-0",

language = "English",

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AU - Espinoza-Montero, Patricio J.

AU - Muñoz-Rodríguez, Marcelo I.

AU - Villamar-Ayala, Cristina A.

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N2 - Hydraulic retention time (HRT) influence improving sludge flocculation with adding the polyelectrolytes (non-ionic, anionic, and cationic) was studied on an activated sludge (AS) system fed with synthetic domestic wastewater (SDW), dairy industry wastewater (DIW), and caramel industry wastewater (CIW). The sludge volumetric index, food/microorganism ratio (F/M), and mixed liquor volatile suspended solids at different HRTs (6, 8 and 10 h) were monitored on an experimental model. Results showed that both SDW and IW had the best sludge flocculation conditions at 8 h and 100 mL of non-ionic polyelectrolyte (0.2 mg L−1). In addition, this phenomenon reached the organic matter removal efficiencies of 95.9, 95.7, and 94.2% for SDW, DIW, and CIW, respectively. Therefore, optimum HRT increased the organic matter removal efficiencies by 10%, sludge concentration by 37% (22–55%), and F/M ratio by 70%. Moreover, the polyelectrolytes used in AS improved the sludge flocculation by 2.9 times.

AB - Hydraulic retention time (HRT) influence improving sludge flocculation with adding the polyelectrolytes (non-ionic, anionic, and cationic) was studied on an activated sludge (AS) system fed with synthetic domestic wastewater (SDW), dairy industry wastewater (DIW), and caramel industry wastewater (CIW). The sludge volumetric index, food/microorganism ratio (F/M), and mixed liquor volatile suspended solids at different HRTs (6, 8 and 10 h) were monitored on an experimental model. Results showed that both SDW and IW had the best sludge flocculation conditions at 8 h and 100 mL of non-ionic polyelectrolyte (0.2 mg L−1). In addition, this phenomenon reached the organic matter removal efficiencies of 95.9, 95.7, and 94.2% for SDW, DIW, and CIW, respectively. Therefore, optimum HRT increased the organic matter removal efficiencies by 10%, sludge concentration by 37% (22–55%), and F/M ratio by 70%. Moreover, the polyelectrolytes used in AS improved the sludge flocculation by 2.9 times.

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KW - Industrial wastewater

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KW - Sludge characteristics

KW - Sludge flocculation

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Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes

Abstract

Bibliographical note

Keywords

UN SDGs

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