Removal of Eutrophic Nutrients from Wastewater and their Bioconversion to Bacterial Single Cell Protein for Animal Feed Supplements. Phase III

摘要

The authors have demonstrated that the bacterium Alcaligenes eutrophus is an efficient and effective remover of nitrogenous and phosphorus compounds from municipal wastewaters. Further, the biomass generated from growth on wastewater proved to be a source of high quality protein for the growth of chickens. During this phase a quantity of biomass grown in the fermentor on digester elutriate was treated with a variety of conditions in order to find conditions which promoted cellular aggregation, since this would allow easier separation of cellular biomass from the treated wastewaters. Samples of digester elutriate, secondary digested sludge and primary undigested sludge were analyzed for the presence of mutagenic substances using the Ames Salmonella mutagenicity test.