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Hello,
I'm trying to understand how the MICROPOL module (WAQTEL) works in Telemac-2D. Can anyone tell me which is the implemented law of adsorption/desorption of micro-pollutants in telemac-2d (version v8p1). The user manual so far is not clear to me.
Thanks in advance,
Lan Anh

Hello,

If I am not mistaken the adsorption/desorption of micro-pollutans only acts between the dissolved pollutant and the suspended sediment, so no adsorption/desorption with the bed sediment.

The law is pretty simple, it first gets the difference between the concentrations and equilibrium:

Kd C - Cs

being Kd the distribution coefficient, C the dissolved pollutant's concentration and Cs the fraction of suspended matter that is polluted.

So if there is too much dissolved pollutant KdC-Cs is > 0 so the pollutant is adsorbed by sediments. On the other hand if there is not enough dissolved polluntant then KdC-Cs is < 0 so there is desoprtion.

Then this difference is multiplied by the speed of desoprtion to get the balance.

I suggest you check the Theory Guide (v8p1/documentation/waqtel/theory_guide) for more info.


I am just an user of micropol, so it is better if a moderator can answer this question but in the meantime I hope I helped.

Santiago

Hello Lan Anh and Santiago,

Nothing to add, I cannot tell more than the WAQTEL theory and user manuals.

Chi-Tuan