Breathing Biological Ring ke sehlahisoa se secha lefapheng la bio-fitration.E na le sebopeho se tiileng le li-microelements tse ngata, tse bapalang karolo ea bohlokoa tlhoekisong ea likokoana-hloko bakeng sa tikoloho ea metsi. Li tlatselletsa liminerale tse hlokahalang le litlhoko tsa metsi, ka hona ho thusa tlhoekiso ea metsi le ho hlaphoheloa, ho fana ka tikoloho e ntle ea bophelo bakeng sa biota. The potous surface, ka mor'a ts'ebetso e khethehileng ea mocheso o phahameng, E potlakisang ho theoa le ho ikatisa ha sistimi ea nitrifying. Bokaholimo bo na le capillary porosity e phahameng, e thusang ho tlala metsi ka potlako, e fana ka tikoloho ea ho ikatisa ea libaktheria tsa aerobic le anaerobic le ho matlafatsa libaktheria tsa aerobic le anaerobic hammoho ka katleho.ho laola ho bokellana ha nitrite le nitrate.
