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Targeting the Minimum Water Flow Rate Using Water Cascade Analysis Technique


Zainuddin Abdul Manan and Yin Ling Tan
 

Chemical Engineering Department, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia


Dominic Chwan Yee Foo


Chemical Engineering Pilot Plant, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
 

 

Abstract

This work presents the water cascade analysis (WCA) as a new technique to establish
the minimum water and wastewater targets for continuous water-using processes. The
WCA is a numerical alternative to the graphical water targeting technique known as the water surplus diagram. The WCA is to the water surplus diagram in water pinch analysis (WPA) as problem table analysis (PTA) is to the grand composite curves in heat pinch analysis. By eliminating the tedious iterative steps of the water surplus diagram, the WCA  can quickly yield accurate minimum water targets, pinch point locations, and water allocation targets for a maximum water recovery (MWR) network, thereby offering a key complementary role to the water surplus diagram in the synthesis of water network. As in the case of the water surplus diagram, the WCA is not limited to mass-transfer– based operations and is applicable to a wide range of water-using operations.

Keywords: water minimization, minimum water and wastewater targets, water allocation targets, pinch analysis, Water Cascade Table

 

Water Cascade Analysis PDF