Comments on “Simulation of Jeddah multi–port sea o

Authors: Hector Hito Sepulveda

Publish Date: 2011/11/03

Volume: 16, Issue: 1, Pages: 63-64

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Abstract

In a paper published recently in the Journal of Coastal Conservation AlGhamdi J Coast Conserv 1463–69 2010 analyzes the wastewater multipot outfall of Jeddah using CORMIX2 for average ambient conditions Both the near–field and the far–field mixing are calculated with CORMIX2 It is found in AlGhamdi J Coast Conserv 1463–69 2010 that the nearfield extends 1875 m downstream from the diffuser where the dilution reaches 10478 It is at this same distance 1875 m that the plume touches the water surface The farfield dilution and plume width is calculated as the plume finally fills the entire water depth at a distance of 18927 m downstream From these analyses it is concluded that local and international standards for treated wastewater are met and that the plume “will not pose any treats to the local venerable environment” These findings if correct will help to protect the surrounding marine environment However is argued here that the use of CORMIX2 particularly for the farfield environment is not well justified and that the inherent simplifications in the software and its use mainly the characterization of the physical environment undermine the main conclusions

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