Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model
The optimization of water management in industrial processes is paramount in diminishing or mitigating, as far as possible, the negative externalities generated by its current use within the linear economy model. This research presents methods for the optimization of wastewater from paper mills whic...
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doaj-1b999c3fa3284f868606812987720f062020-11-24T22:22:57ZengMDPI AGWater2073-44412018-07-01108101410.3390/w10081014w10081014Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy ModelEmiliano Molina-Sánchez0Juan Carlos Leyva-Díaz1Francisco Joaquín Cortés-García2Valentín Molina-Moreno3Polytechnic School of Linares, University of Jaén, 23071 Jaén, SpainDepartment of Chemical and Environmental Engineering, University of Oviedo, 33006 Oviedo, SpainFaculty of Business and Management, Universidad Autónoma de Chile, 7500912 Santiago, ChileDepartment of Management-1, University of Granada, 18071 Granada, SpainThe optimization of water management in industrial processes is paramount in diminishing or mitigating, as far as possible, the negative externalities generated by its current use within the linear economy model. This research presents methods for the optimization of wastewater from paper mills which are associated with the new sustainability and circular economy model. In this way, the concept of circular economy was applied to the wastewater treatment from a paper mill, with the objective of recovering the resources contained in this type of effluent. The wastewater treatment plant is based on a biological reactor of activated sludge, and treats a flow of 4868 m3·day−1. This study proposes the development and evaluation of indicators of circular economy applied to wastewater from a paper mill, as well as the assessment of the removal performance of color, total suspended solids (TSS), biochemical oxygen demand on the fifth day (BOD5), and chemical oxygen demand (COD), which are higher than 96% in all cases. Per 1 m3 of wastewater from a paper mill, a volume of 0.9 m3 of potentially reusable water and a recovered sludge mass of 0.7 kg are generated; the latter is reused as a mineral filler during the process itself. In light of this, a multivariable statistical analysis was applied to determine the relationship of the operation variables and indicators of circular economy. In this way, wastewater from the paper mill can be regarded as a technological nutrient, which is partially reintroduced into the production process, enabling the recovery of the water and mineral fillers that it contains.http://www.mdpi.com/2073-4441/10/8/1014circular economyindicatornegative externalitypaper mill effluentsustainabilitytechnological nutrientwastewater |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Emiliano Molina-Sánchez Juan Carlos Leyva-Díaz Francisco Joaquín Cortés-García Valentín Molina-Moreno |
spellingShingle |
Emiliano Molina-Sánchez Juan Carlos Leyva-Díaz Francisco Joaquín Cortés-García Valentín Molina-Moreno Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model Water circular economy indicator negative externality paper mill effluent sustainability technological nutrient wastewater |
author_facet |
Emiliano Molina-Sánchez Juan Carlos Leyva-Díaz Francisco Joaquín Cortés-García Valentín Molina-Moreno |
author_sort |
Emiliano Molina-Sánchez |
title |
Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model |
title_short |
Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model |
title_full |
Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model |
title_fullStr |
Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model |
title_full_unstemmed |
Proposal of Sustainability Indicators for the Waste Management from the Paper Industry within the Circular Economy Model |
title_sort |
proposal of sustainability indicators for the waste management from the paper industry within the circular economy model |
publisher |
MDPI AG |
series |
Water |
issn |
2073-4441 |
publishDate |
2018-07-01 |
description |
The optimization of water management in industrial processes is paramount in diminishing or mitigating, as far as possible, the negative externalities generated by its current use within the linear economy model. This research presents methods for the optimization of wastewater from paper mills which are associated with the new sustainability and circular economy model. In this way, the concept of circular economy was applied to the wastewater treatment from a paper mill, with the objective of recovering the resources contained in this type of effluent. The wastewater treatment plant is based on a biological reactor of activated sludge, and treats a flow of 4868 m3·day−1. This study proposes the development and evaluation of indicators of circular economy applied to wastewater from a paper mill, as well as the assessment of the removal performance of color, total suspended solids (TSS), biochemical oxygen demand on the fifth day (BOD5), and chemical oxygen demand (COD), which are higher than 96% in all cases. Per 1 m3 of wastewater from a paper mill, a volume of 0.9 m3 of potentially reusable water and a recovered sludge mass of 0.7 kg are generated; the latter is reused as a mineral filler during the process itself. In light of this, a multivariable statistical analysis was applied to determine the relationship of the operation variables and indicators of circular economy. In this way, wastewater from the paper mill can be regarded as a technological nutrient, which is partially reintroduced into the production process, enabling the recovery of the water and mineral fillers that it contains. |
topic |
circular economy indicator negative externality paper mill effluent sustainability technological nutrient wastewater |
url |
http://www.mdpi.com/2073-4441/10/8/1014 |
work_keys_str_mv |
AT emilianomolinasanchez proposalofsustainabilityindicatorsforthewastemanagementfromthepaperindustrywithinthecirculareconomymodel AT juancarlosleyvadiaz proposalofsustainabilityindicatorsforthewastemanagementfromthepaperindustrywithinthecirculareconomymodel AT franciscojoaquincortesgarcia proposalofsustainabilityindicatorsforthewastemanagementfromthepaperindustrywithinthecirculareconomymodel AT valentinmolinamoreno proposalofsustainabilityindicatorsforthewastemanagementfromthepaperindustrywithinthecirculareconomymodel |
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