PU: potentiometric unit; COD: chemical oxygen demand; BOD: biological oxygen demand; F & O: fats and oils; TS: total solids; TSS: total suspended solids. VS: volatile solids; MPN: most probable number method

Parameter Unit Value Method pH PU 7.7 Potentiometer Alkalinity (CaCO3) mg l-1 1,310 Method 2320 B COD mg l-1 4,306 Method 5220 D BOD mg l-1 2,733 Method 5210 B F & O mg l-1 300 Method 5520 D TS mg l-1 3,862 Method 2540 B TSS mg l-1 1,900 Method 2540 D VS mg l-1 5,900 Method 2540 E VFAs mg l-1 344 See text Norg mg l-1 627 Method 4500-Norg N-NH3 mg l-1 553 Method 4500-NH3 P-PO4-3 mg l-1 318 Method 4500 p Total Coliforms MPN/100ml 2x107 Method 9221 B Fecal Coliforms MPN/100ml 9x104 Method 4500 E

Table 1: Characterization of slaughterhouse wastewater.