English to Czech Other Environment & Ecology

it's used in a text describing benefits of a novel wastewater treatment process (adsorption technology) - due to its compact size it's going to be a preferred option for some industrial users over other competing wastewater solutions

for ecological footprint people use 'ekologicka stopa'... which I find rather interesting, but perhaps it's a matter of getting used to it as with any new terms

has anybody come across suitable Czech term?