Develop and Demonstrate Fundamental Basis for Selectors to Improve Activated Sludge Settleability

Donald M. D. Gray Vincent P. De Lange Donald M. D. Gray (Gabb)

ISBN 10: 1843397528 / ISBN 13: 9781843397526

Published by IWA Publishing, 2008

About this Item

pp. 220.

Seller Inventory # 26483257

Bibliographic Details

• Title: Develop and Demonstrate Fundamental Basis for Selectors to Improve Activated Sludge Settleability
• Publisher: IWA Publishing
• Publication Date: 2008
• Language: English
• ISBN 10: 1843397528
• ISBN 13: 9781843397526
• Binding: Soft cover
• Condition: New

About this title

Synopsis

Successful operation of the activated sludge process relies heavily on the ability to effectively separate mixed liquor into return activated sludge (RAS) and a high quality final effluent. Solids separation efficiency is dictated in large part by the relative population of floc-forming and filamentous microorganisms present in the activated sludge. During normal operation, mixed liquor will be composed primarily of floc-formers with relatively low levels of filamentous organisms. Some population of filamentous organisms is necessary to promote the formation of larger flocs and prevent development of a "pin-floc" condition, which often results in high effluent turbidities (Jenkins, 2004). However, when conditions favoring the growth of filaments over floc-formers occur, a condition commonly referred to as filamentous "bulking" may occur.