Mathematical Modelling of In-Sewer Processes as a Tool for Sewer System Design

Gaspare Viviani; Giorgio Mannina; Paolo S. Calabrò

Mathematical Modelling of In-Sewer Processes as a Tool for Sewer System Design

Gaspare Viviani, Giorgio Mannina, Paolo S. Calabrò

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Abstract

The objective of this paper is to evaluate the potential impact of insewer processes (COD components transformation and hydrogen sulphideproduction) on the design of sewer systems. The tool used for such analysis is amathematical model derived from the WATS model (WastewaterAerobic/anaerobic Transformation in Sewers) able to describe the processesoccurring in the sewer system both under aerobic and anaerobic conditions. Themodel is applied to three catchments with, respectively, 10,000, 50,000 and250,000 inhabitants connected to gravity sewer systems different in terms oftype (separate or combined), slope, length, travel time, wastewater temperature.The simulation results enable to assess the effect of the in sewer transformationsin terms of hydrogen sulphide formation and transformation of the biodegradable organic matter that is necessary for biological nutrients removal at theWWTP.

Lingua originale	English
Titolo della pubblicazione ospite	Springer Nature Switzerland AG 2019 G. Mannina (Ed.): UDM 2018, GREEN
Pagine	814-819
Numero di pagine	6
Stato di pubblicazione	Published - 2019

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Management, Monitoring, Policy and Law
Industrial and Manufacturing Engineering

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AB - The objective of this paper is to evaluate the potential impact of insewer processes (COD components transformation and hydrogen sulphideproduction) on the design of sewer systems. The tool used for such analysis is amathematical model derived from the WATS model (WastewaterAerobic/anaerobic Transformation in Sewers) able to describe the processesoccurring in the sewer system both under aerobic and anaerobic conditions. Themodel is applied to three catchments with, respectively, 10,000, 50,000 and250,000 inhabitants connected to gravity sewer systems different in terms oftype (separate or combined), slope, length, travel time, wastewater temperature.The simulation results enable to assess the effect of the in sewer transformationsin terms of hydrogen sulphide formation and transformation of the biodegradable organic matter that is necessary for biological nutrients removal at theWWTP.

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