title: Full-scale evaluation of a multi-component additive for efficient control of activated sludge filamentous bulking.
abstract: A multi-component additive formulated for a more efficient control of activated sludge filamentous bulking was evaluated at a full-scale treatment plant experiencing severe filamentous bulking. It was found that, besides offering an immediate improvement of sludge settling, the multi-component additive was able to eliminate the filamentous bacteria causing the bulking. Hence, contrary to ordinary additives, this novel additive yielded immediate as well as long-term improvements in sludge sedimentation upon a few additions. Preliminary lab-scale toxicity tests showed that the treatment of the sludge by the additive should not impart any toxicity to the resulting effluent.
authors.affiliation: Center for Environmental Sanitation, Laboratory for Microbial Ecology and Technology, Ghent University, Belgium.
authors.forename: M A
authors.initials: MA
authors.lastname: Seka
authors.forename: T
authors.initials: T
authors.lastname: Van DeWiele
authors.forename: W
authors.initials: W
authors.lastname: Verstraete
mesh_terms: D000818:Animals; D003621:Daphnia; D005427:Flocculation; D011108:Polymers; D000644:Quaternary Ammonium Compounds; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D013627:Talc / Q000737:chemistry; D018675:Toxicity Tests
chemical_list: D011108:Polymers; D000644:Quaternary Ammonium Compounds; D012722:Sewage; D013627:Talc