Hi 

If you want to decrease the discharge and contamination, you be able to use a porous medium in your channel that constructed by several size of stones and after that you should analyse your medium with network modeling which it is available in this article in my profile (A numerical study of the flow through coarse and homogeneous porous media using coupled network model).

Hi 

If you want to decrease the discharge and contamination, you be able to use a porous medium in your channel that constructed by several size of stones and after that you should analyse your medium with network modeling which it is available in this article in my profile (A numerical study of the flow through coarse and homogeneous porous media using coupled network model).

Dear Dr. Labar,

thank you so much for reply. Could you please explain more about cell membrane-based channel or put some related links.

You can use porous microcellular concrete structures. You can find more information if you can just check for inorganic microcellular porous structure.  This technique is based on making porous material by for example, template or porogens.

In my opinion permeable concrete open chanels are not suitable for long term purification, because they can not be regenerated.

Porous concrete chanels might decrease the contamination spikes (if spikes are present) but this is also not long term decontaminating solution. If spike prevention is desired (just to meet the regulation standards) then this is a smart way to do it.

The above is for inorganic. If contaminations are organic, then the pores and the growing there bacteria might reduce the contaminations, but surface is neglect able compared to any filled part (sand or stones) and the filled part will be actually a filter.

If you want to decrease discharge in a river for example, permeable chanels will distribute more evenly the water, but lake or swamp is more suitable.

For long term purification- filtration and sorbtion can be used, because filters can be cleaned/washed and most sorbents can be regenerated. Threating the non diluted contamination media is easter than the diluted.

Pervious concrete channels are certainly constructable, but may not work in the way intended.  If there is to be significant flow in the channel, most of the water will not touch the bottom and sides so will behave just like if the channel was of normal concrete.  A little water will be absorbed into the sides and bottom, but that will reduce the channel output only a little ( dependent on the absorbency of the substrate.)

I would be most concerned that the open graded nature of the previous concrete will be easier to erode.