Comparison of mathematical methods for the evaluation of wastewater settleability by settling column tests

Particulate matter (PM), which may serve as a vector of pollutants in both natural and human-impacted waters, is of primary interest in water quality studies, particularly for those conducted in urban areas. Separating solids from the liquid phase is one of the main goals of water treatment practice...

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Veröffentlicht in:Environmental technology. - 1993. - 38(2017), 6 vom: 04. März, Seite 671-681
1. Verfasser: Carbone, Marco (VerfasserIn)
Weitere Verfasser: Penna, Nadia, Piro, Patrizia
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Comparative Study Journal Article Total suspended solids flocculent settling settling column tests settling efficiency wastewater settleability Particulate Matter Waste Water
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520 |a Particulate matter (PM), which may serve as a vector of pollutants in both natural and human-impacted waters, is of primary interest in water quality studies, particularly for those conducted in urban areas. Separating solids from the liquid phase is one of the main goals of water treatment practices. Above all, the settling process is the most commonly used for this purpose. Generally, settling column tests are used in the laboratory to assess the total PM removal. Besides the traditional graphical method used for the interpretation of the laboratory results, other mathematical methods were developed - with the goal of simplifying the settling efficiency evaluation procedure and making it less subjective. To make a contribution in that direction, a study based on the comparison of four different mathematical methods for estimating PM removal efficiencies was conducted. The analysis was carried out on 15 samples of wastewater and showed that only two methods gave satisfactory results, and only one of them was physically based. Consequently, it is recommended to assess the overall PM removal, Etot, by a monoparametric exponential function, depending on the settling time (t) and on the first-order decay coefficient (k) 
650 4 |a Comparative Study 
650 4 |a Journal Article 
650 4 |a Total suspended solids 
650 4 |a flocculent settling 
650 4 |a settling column tests 
650 4 |a settling efficiency 
650 4 |a wastewater settleability 
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650 7 |a Waste Water  |2 NLM 
700 1 |a Penna, Nadia  |e verfasserin  |4 aut 
700 1 |a Piro, Patrizia  |e verfasserin  |4 aut 
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