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  4. Evaluation of ttal emissions from treatment plants and combined sewer overflows
 
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1998
Journal Article
Title

Evaluation of ttal emissions from treatment plants and combined sewer overflows

Abstract
Based upon the connection of a simulation program for combined sewer systems with the IAWQ-Activated Sludge Model No.1 the new simulation tool GEMINI was developed, which allows the calculation of sewer and sewage treatment plant as a unit. Some obtained results are presented in an example. They suggest, that for every treatment plant a rate of inflow is determinable, which leads to a minimum of total emissions out of sewer and treatment plant. That optimal value of sewage treatment plant inflow in the example is distinct- ly greater than the design flow rate 2Qs + Qf. (Qs and Qf denote the domestic water flow rate and the infiltration water flow rate, the factor 2 is fixed in German design rules). So it is recognizable, that a rigid connection of sewer and treatment plant not always fulfils the aim of minimization of total emissions.
Author(s)
Guderian, J.
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Durchschlag, A.
Durchschlag und Bever Ingenieurgesellschaft für Siedlungswasserwirtschaft mbH
Bever, J.
Durchschlag und Bever Ingenieurgesellschaft für Siedlungswasserwirtschaft mbH
Journal
Water science and technology  
DOI
10.1016/S0273-1223(97)00786-5
Language
English
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Keyword(s)
  • biological reactor

  • Bioreaktor

  • combined sewer system

  • Gesamtemission

  • Mischkanalisation

  • sewer tank

  • simulation model

  • Simulationsmodell

  • Speicherbecken

  • total emission

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