The combined effect of influent quality and anoxic selector on activated sludge settleability

Autor:	Willy Verstraete, F. Torfs, M.‐P. De Poorter, H. Bogaert
Rok vydání:	1994
Předmět:	Activated sludge Chromatography Chemistry Environmental Chemistry Sludge volume index Sorption General Medicine Biodegradation Pulp and paper industry Waste Management and Disposal Anoxic waters Water Science and Technology Process operation
Zdroj:	Environmental Technology. 15:957-967
ISSN:	1479-487X 0959-3330
DOI:	10.1080/09593339409385503
Popis:	The influence of three different types of influent on the sludge settleability. and metabolic capacity of activated sludge was quantified during process operation with and without an anoxic selector. A significantly higher diluted Sludge Volume Index (dSVI) and a concomitant increase in filament abundance was observed when the influent quality evolved from fresh influent over acidified to septic influent. However, this deterioration in function of influent quality was noticed only when no selector was present. When no sorption phase was provided, the presence of rapidly metabolisable short chain fatty acids negatively affected the sludge settleability. It is proposed that floc formers are potentially harmed by incomplete denitriflcation but selectively enhanced by slowly metabolisable organic compounds.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::840e8b3b7a5b7a42ac9ea1ee508f889e https://doi.org/10.1080/09593339409385503 Zobrazit plný text záznamu