Chemical, Physicochemical and Physical Properties of Wastewater from the Sudanese Fermentation Industry (sfi)

Large amounts of untreated waste water of baker’s yeast industry from the Sudanese fermentation industry (SFI) are discharged in two different forms; molasses waste (MW) and wastewater from all processing operations. The objectives of the present study were to determine the chemical and physical properties of the wastewater from (SFI). Part of these characteristics is considered as parameters for measuring the strength of the effluent. Samples of wastewater were collected from four sources in the fermentation plant: molasses wastewater (MW), separator wastewater (SW), Filter wastewater (FW) and the main drain well wastewater (MDW). The study shows that all wastewater samples contain higher amounts of micro-elements and lower amounts of macro-elements. The MW contents of sodium, potassium and calcium were 443, 7000 and 3810ppm, respectively. The study also shows that MW had a higher BOD value (640 mg/l) and COD (4500 mg/l) compared to SW, FW and MDW which had a BOD value of 250, 450 and 148 mg/l, respectively. However, the COD values of SW, FW and MDW were 250, 160 and 80 mg/l, respectively. The wastewater was found to be rich in minerals and nutrients, for this reason it is useful to use it in agriculture, irrigation and energy purposes after being treated.