Odorous swine wastewater treatment by purple non-sulfur bacteria, Rhodopseudomonas palustris, isolated from eutrophicated ponds

Three strains of phototrophic, purple, non-sulfur bacteria, isolated from eutrophic ponds, were used to treat odorous swine wastewater. One isolate, Rhodopseudomonas palustris, when cultured in swine wastewater without supplementation for 7 d, removed odorous organic acids (170 mg l(-1)), COD (10 000 mg l(-1)) and phosphate (180 mg l(-1)).