16 December 2021, Rome, Italy.Water purification tank converting fish waste into nitrites and nitrates (useful for growing plants) by bacteria, at the The Circle farm.
The Circle is a company that uses the system of aquaponics for the production of vegetables.Without generating polluting waste, The Circle is able to valorize every waste by reintroducing it into the production cycle.The fish waste is filtered in tanks with bacteria that transform the waste into nutrients for the plants. The water that is not absorbed by the plants is reintroduced into the fish ponds.