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Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

Thermodynamic analysis of multi-stage flash distillation application in wastewater treatment

Jiao Wang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Key Laboratory for Desalination of Liaoning Province, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Shi Chen
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Key Laboratory for Desalination of Liaoning Province, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Xingsen Mu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Key Laboratory for Desalination of Liaoning Province, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Shengqiang Shen
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Key Laboratory for Desalination of Liaoning Province, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Abstract

This paper presents a thermodynamic system of multi-stage flash distillation (MSF) for wastewater treatment. The system has been designed to concentrate the wastewater with iteration method. A case study has been developed in this paper. The sample wastewater and waste heat source are supplied from a power plant. And the multi-stage flash distillation system is designed to concentrate the wastewater with high density (54.0g/L) of sodium nitrate into 216.0g/L. In this case, the 4-stage flash distillation systems are designed with the different evaporating temperatures respectively. Furthermore, the performance and the main structure parameters are calculated.

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