Buletin Keairan media Informasi Kegiatan Penelitian Keairan, Vol. 2 No. 2, Desember 2009, ABSTRAK : Waterwater treatment plants in industries usually apply a physical and chemical proses that results also slugde, causing a problem if not stored in proper place and polluting the evironment of river, deep and shallow wel etc. The main process of re-using sludge resulting from the wastewater treat…