DLE related information, page-84

I agree with you, he just referenced dilution as something that should be considered when planning.
Like there's an engineering challenge that a car should be able to stop, so the car manufacturers put a brake in it.

There are at least 3 strategies to minimise the impact of dilution in the pumped brine:

1. Putting the extraction wells and the reinjection wells far away. This can be seen in Kachi process sheet below:



2. Considering natural brine flows.

3. Gradually modifying the depth from where you're pumping brine.