8.The method of treating hog waste in a lagoon according to claim 7, which comprises installing packs of zeolite ceramic balls into said second zone for carrying out sequence batch reaction.
9.The method of treating hog waste in a lagoon according to claim 7, which comprises blowing by a blower the gas collected from the first zone and the fourth zone to the second zone for carrying out sequence batch reaction.
10.The method of treating hog waste in a lagoon according to claim 7, which comprises installing covers over said first zone, and over said fourth zone.