What is it about?
In tropical climates where temperature changes between the coldest and the hottest months is not high wetland performance depend more on the hydrodynamics within the system than the temperature. Wetlands can therefore be designed to include the effects of hydrodynamics in the performance in order to optimize the designs.
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Why is it important?
Improvements in the design affect the area needed for constructed wetland.
Perspectives
Writing this article was really a frustration because too few people understood the design of these experiments using batch recycle system to obtain rate parameters. Most exerts are used to see wetland experiments designed as flow through and not recycled back. I hope this paper reminds that in any system where concentration of reacting species is small, mass transfer limitation influences the overall process. This reality has not been investigated in constructed wetlands used for polishing or tertiary treatment of wastewater. In this paper the effects are clearly demonstrated
Prof Karoli Nicholas Njau
Nelson Mandela African Institute of Science and Technology
Read the Original
This page is a summary of: Mass transfer approach and the designing of horizontal subsurface flow constructed wetland systems treating waste stabilisation pond effluent, Water Science & Technology Water Supply, December 2018, IWA Publishing,
DOI: 10.2166/wst.2019.031.
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