Doody, Alexandra

Ms. Doody is a project technical leader and process specialist with CDM Smith in Austin, Texas. Ms. Doody also serves as CDM Smith’s nutrient removal discipline leader.

Titles from this speaker

Description: Densification with Hydrocyclones: From Concept to Reality for BNR Improvements in...

Densification with Hydrocyclones: From Concept to Reality for BNR Improvements in Wichita, Kansas

Abstract

Selectively wasting poorer settling filaments and lighter mixed liquor particles and exposing mixed liquor to high F/M unaerated selectors can promote better settling sludge that can also yield additional benefits. Such benefits may include selective retainment of microorganisms that are beneficial for biological nutrient removal (BNR) and a reduction in pathogens that must be disinfected. This paper summarizes results from a pilot study of selective sludge wasting using hydrocyclones at a water resource recovery facility (WRRF) in Wichita, Kansas including improved settleability, more robust nitrification, and reduced E. coli counts in the clarified effluent. This paper also presents the design criteria and layout for a full-scale hydrocyclone facility that will be constructed from 2024-2027 as part of a BNR upgrade at the City’s Plant 2 WRRF.

Selectively wasting poorer settling particles can promote not only better settling sludge, but also retainment of microorganisms beneficial for nitrification and a reduction in pathogens. This paper summarizes results from a pilot study of selective sludge wasting using hydrocyclones at a facility in Wichita, Kansas as well as the design for a full-scale hydrocyclone facility that will be constructed in a BNR upgrade of the City's Plant 2 WRRF.

SpeakerDoody, Alexandra

Presentation time

14:00:00

14:20:00

Session time

13:30:00

15:00:00

SessionApplying Hydrocyclones for Densification

Session locationRoom S501a - Level 5

TopicFacility Operations and Maintenance, Intermediate Level, Municipal Wastewater Treatment Design, Nutrients, Research and Innovation

Author(s)

Doody, Alexandra

Author(s)A.T. Doody 1; J. Belden 2 ; A. Mande 3; M. Nelis 3; E. Staunton 4; S. Stewart 5; S. Mathur 6; A. Doody 1; J. Belden 2;

Author affiliation(s)CDM Smith, Inc. 1; City of Wichita, Kansas 2 ; CDM Smith, Inc. 3; CDM Smith, Inc. 3; CDM Smith, Inc. 4; CDM Smith, Inc. 5; CDM Smith, Inc. 6; CDM Smith, Inc. 1; City of Wichita, Kansas 2;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825159208

Volume / Issue

Content sourceWEFTEC

Word count14