Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir

Understanding sedimentation behaviour of clay material is crucial in planning project for sediment removal from bottom of a reservoir. The sedimentation of samples taken from Occhito reservoir ( Italy) is investigated. Samples containing and not containing polyacrylamide have been monitored. Results...

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Main Authors:	Bruno Molino, Gennaro Bufalo, Annamaria De Vincenzo, Luigi Ambrosone
Format:	Article
Language:	English
Published:	MDPI AG 2020-04-01
Series:	Applied Sciences
Subjects:	dewatering sedimentation flocculant reservoir geotextile tube
Online Access:	https://www.mdpi.com/2076-3417/10/9/3051

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spelling	doaj-6a71522578904a60926f74798de49ff12020-11-25T02:26:29ZengMDPI AGApplied Sciences2076-34172020-04-01103051305110.3390/app10093051Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial ReservoirBruno Molino0Gennaro Bufalo1Annamaria De Vincenzo2Luigi Ambrosone3Department of Bioscience and Territory, University of Molise, 86090 Isernia, ItalyINAIL-Sector Research, Certification and Verification, Department of Naples, I-80121 Naples, ItalySchool of Engineering, University of Basilicata, 85100 Potenza, ItalyDepartment of Medicine and Health Science V. Tiberio, University of Molise, 86100 Campobasso, ItalyUnderstanding sedimentation behaviour of clay material is crucial in planning project for sediment removal from bottom of a reservoir. The sedimentation of samples taken from Occhito reservoir ( Italy) is investigated. Samples containing and not containing polyacrylamide have been monitored. Results reveal that polymer induces bridging flocculation and the particle-size distribution tends to become uniform. The sedimentation profiles follow a mater curve. Such experimental observation is used to develop a semi-empirical model for assessment of dewatering process by flocculation of dredged sludge in artificial reservoir. A two-step stage model for assessing the volume of solids in a geotextile tube is suggested. Such model is based on the idea that for very long dewatering times solids reach the configuration of free sedimentation.https://www.mdpi.com/2076-3417/10/9/3051dewateringsedimentationflocculantreservoirgeotextile tube
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Bruno Molino Gennaro Bufalo Annamaria De Vincenzo Luigi Ambrosone
spellingShingle	Bruno Molino Gennaro Bufalo Annamaria De Vincenzo Luigi Ambrosone Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir Applied Sciences dewatering sedimentation flocculant reservoir geotextile tube
author_facet	Bruno Molino Gennaro Bufalo Annamaria De Vincenzo Luigi Ambrosone
author_sort	Bruno Molino
title	Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir
title_short	Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir
title_full	Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir
title_fullStr	Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir
title_full_unstemmed	Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir
title_sort	semiempirical model for assessing dewatering process by flocculation of dredged sludge in an artificial reservoir
publisher	MDPI AG
series	Applied Sciences
issn	2076-3417
publishDate	2020-04-01
description	Understanding sedimentation behaviour of clay material is crucial in planning project for sediment removal from bottom of a reservoir. The sedimentation of samples taken from Occhito reservoir ( Italy) is investigated. Samples containing and not containing polyacrylamide have been monitored. Results reveal that polymer induces bridging flocculation and the particle-size distribution tends to become uniform. The sedimentation profiles follow a mater curve. Such experimental observation is used to develop a semi-empirical model for assessment of dewatering process by flocculation of dredged sludge in artificial reservoir. A two-step stage model for assessing the volume of solids in a geotextile tube is suggested. Such model is based on the idea that for very long dewatering times solids reach the configuration of free sedimentation.
topic	dewatering sedimentation flocculant reservoir geotextile tube
url	https://www.mdpi.com/2076-3417/10/9/3051
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Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir

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