Abstract
The quality characteristics of wastewater of the Sudanese Fermentation Industry (El-Hassaheissa-Gezira State) were investigated. The study indicated that wastewater contained higher amounts of nutrients. The percentage of protein of the separator waste and the main drain waste were found to be 0.5% and 0.7%, respectively. The molasses waste contained higher amounts of total solids (56.8 mg/l) while separator waste, filter waste and the main drain waste contained 0.4 mg/l, 0.4 mg/l and 0.24 mg/l, respectively. The molasses waste had a higher BOD (640 mg/l) and COD (4500 mg/l) values compared to the separator waste, filter waste and main drain waste which contained 250 mg/l, 450 mg/l and 148 mg/l BOD values, respectively. However, the COD values of separator waste, filter waste and main drain waste were 250 mg/l, 160 mg/l and 80 mg/l respectively. Different wastewater samples contained relatively high concentrations of macro- and micro-elements and mineral salts. The microbiological analysis indicates absence of staphylococci and coliform in most of the wastewater samples.