Sludge Hopper Design for Activated Sludge Clarifiers

by O. E. Albertson, Enviro Enterprises, Inc, Salt Lake City, United States,

Document Type: Proceeding Paper

Part of: Critical Issues in Water and Wastewater Treatment


Only in the past few years has any attention been allocated to the transport characteristics of sludge collectors. However, no attention has been given to a design rationale for the sludge hopper. The configuration of a sludge hopper effects clarifier performance and restriction in the sludge removal zone causes a response similar to scraper deficiencies. Further, the design practice is obsolete as it was developed at clarifier solids loadings 30-50% of current MLSS designs for advanced wastewater treatment. This paper provides a set of guidelines for hopper design and placement based on the projected sludge flow profiles within the sludge removal zone.

Subject Headings: Sludge | Clarifiers | Wastewater treatment | Construction equipment | Load factors | Flow profiles | Industrial wastes | Sedimentation tanks

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