[Nanzikambe]

The headline claim is demonstrably poorly researched and as others point out the project seems to be incredibly poor value.

There's a lower tech approach that's been extensively proven and in production since 1998, it produces not just veg, but firewood/biomass, shrimps, fish, fresh water and more:

http://articles.latimes.com/2001/jan/06/news/mn-9169 https://www.youtube.com/watch?v=_P1rPnVUME4