Topic: Assessing the Suitability of National Water and Sewage Corporation’s Sewage Sludge for the Production of Novel Bio-products, ((2017).


Key words: sewage sludge, novel bio-products
ABSTRACT:
The National Water and Sewerage Corporation (NWSC) operates a waste-water treatment plant handling sewage from all Kampala suburbs. While there are no challenges yet as far as the capacity to treat the waste-water, the plant generates a large volume of semi-solid sewage sludge (approximately 40m 3 /day) as a by-product of the waste-water filtration processes.
This sludge collecting at the plant premises (approximately 40m 3 /day) is currently being sold at a give-away price as agricultural manure to small-scale companies. There is, therefore, an urgent need to profitability and sustainably dispose-off this sewage sludge volume preferably on-site. In this study, the suitability of national water and sewerage corporation (NWSC’s) sewage sludge is determined for the production of novel bio-products.
Solid sludge samples were collected from NWSC’s drier beds, and analysed for microbial and chemical content relevant to microbial growth sustainability and safety of the extracted solid sludge solution and selected ager.
Results obtained, indicated growth in both medium extract showed that the presumptive lactobacillus isolates grow well in medium constituted from solid sludge and produces the acid when investigated on MSR broth. There was unequivocal evidence for the fermentative potential of the isolate.
The solid sludge was, therefore, considered suitable for bio-technological production of novel products.
Contact: Ivan Lule, luleivan@yahoo.com