Sankey Diagrams » COD http://www.sankey-diagrams.com A Sankey diagram says more than 1000 pie charts Fri, 23 Jul 2010 06:03:58 +0000 en hourly 1 http://wordpress.org/?v=3.0 COD loads in Wastewater Treatment Plant http://www.sankey-diagrams.com/cod-loads-in-wastewater-treatment-plant/ http://www.sankey-diagrams.com/cod-loads-in-wastewater-treatment-plant/#comments Mon, 08 Sep 2008 09:56:04 +0000 phineas http://www.sankey-diagrams.com/?p=105 This Sankey diagram shows COD (chemical oxygen demand) in a waste water treatment plant that handles both municipal waste water as well as effluents from a chemical plant.

It was generated using the software package STOAT, which allows for dynamic simulation of wastewater treatment plants. Image with kind permission of Berlin-based EnviaTec GmbH.

CSB loads in a waste water treatment plant. Sankey diagram created with STOAT model. Image courtesy of EnviaTec GmbH (http://www.enviatec.de)

The Sankey diagram does not show any flow quantities explicitly, and the values seem to be clustered into five or six fixed arrow magnitudes. The flows have a flat arrow base, and a rounded arrow head, which is uncommon, but still let’s you determine the flow direction. Process clipart icons overlay the nodes, where flows branch off or merge.

I have added the STOAT model to the list of software tools with Sankey drawing capabilities.

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