On-line determination of sludge settling velocity for flux-based real-time control of secondary clarifiers

• Published in: Water science and technology Vol. 54; no. 11-12; pp. 249 - 256
• Main Authors: Lynggaard-Jensen, A, Lading, L
• Format: Journal Article
• Language: English
• Published: England IWA Publishing 01.01.2006
• Subjects: Algorithms; Capacity; Clarifiers; Control; Control algorithms; Control theory; Kinetics; Mathematical models; Online Systems; Rain; Real time; Sensors; Settling rate; Settling velocity; Sewage; Sludge; Sludge settling; Sludge volume index; Suspended particulate matter; Suspended solids; Velocity; Wastewater; Wastewater treatment; Wastewater treatment plants; Water Purification - methods; Water Purification - standards

The state diagram for operation of secondary clarifiers is used to design a control algorithm for the return sludge pumping and determination of the actual hydraulic capacity of the biological step of a wastewater treatment plant. On-line input for the control algorithm is derived from a sludge volu...