Martin, William

Mr. Martin is a Senior Principal Engineer in Hazen's Twin Cities office. He has approximately 10 years of experience in design, operation, and construction of municipal and industrial water and wastewater facilities and 6 years of experience in compliance and regulatory reporting for industrial pretreatment facilities. Mr. Martin is experienced in the planning, design, and construction of wastewater treatment facilities. His experience includes hydraulic and process modeling, energy management, and design of improvements to wastewater treatment facilities. Mr. Martin is a member of Hazen's CFD modeling team, and regularly performs modeling and evaluation of WWTP clarifiers.

Titles from this speaker

Densification Specific Considerations for Secondary Clarifier Assessments

Abstract

Intensification is a major innovation for water resource recovery facilities (WRRFs) to realize cost-effective use and deployment of infrastructure. One of the promising technologies and approaches for process intensification is densified activated sludge (DAS). Secondary clarifiers are a key unit process to ensure retention of the solids inventory and permit compliance. The performance of clarifiers depends on several interrelated processes and factors including hydrodynamics, settling, turbulence, flocculation, sludge rheology, atmospheric conditions, tank geometry, internal features and loading conditions. Several tools and design “rules of thumb” are available from regulatory loading guidelines such as Ten State Standards, sludge specific assessment tools such as state point analysis, and calibrated, site-specific tools such as 2D and 3D computational fluid dynamics (CFD) modeling. These tools have been in use for decades with traditional sludge settling characteristics. However, the industry is still working through methods and procedures to assess the impacts of DAS settling characteristics on traditional secondary clarifier operations and loading guidelines. This paper will highlight the use of clarifier evaluation tools for DAS applications, including key considerations, observed performance, potential loading rates, and other relevant properties. Case studies are highlighted to demonstrate potential impacts at full-scale WRRF sites.

This paper was presented at WEFTEC 2023 in Chicago, IL.

SpeakerMartin, Will

Presentation time

11:30:00

12:00:00

Session time

10:30:00

12:00:00

SessionSecondary Clarification Advancements

Session locationRoom S401d - Level 4

TopicAdvanced Level, Municipal Wastewater Treatment Design

Author(s)

Martin, William

Author(s)W. Martin 1; A. Griborio 2 ; R. Latimer 3; R. Vandermeulen 4; G. Ram Mohan 5; W. Martin 1;

Author affiliation(s)Hazen and Sawyer, St. Paul, MN 1; Hazen and Sawyer, Hollywood, FL 2 ; Hazen and Sawyer, Atlanta, GA 3; Hazen and Sawyer 4; Hazen and Sawyer 5; Hazen and Sawyer 1;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825159196

Volume / Issue

Content sourceWEFTEC

Word count8

Description: Novel Application of Clarifier CFD Modeling to Increase the Capacity of a Trickling...

Novel Application of Clarifier CFD Modeling to Increase the Capacity of a Trickling Filter/Activated Sludge Plant

Abstract

: Modeling of primary and secondary clarifiers is relatively common; however, most secondary clarifier modeling case studies are conducted with activated sludge suspensions. Trickling filter effluent has very different characteristics than conventional activated sludge and typical raw wastewater. This paper is unique and presents a detailed study of settling and flocculation properties of trickling filter effluent and the application of customized secondary clarifier CFD modeling to establish clarifier capacity and identify optimization strategies.

SpeakerMartin, William

Presentation time

13:40:00

14:00:00

Session time

13:00:00

14:00:00

SessionSettle Down! Case Studies of Secondary Clarifier Improvements

Session number604

TopicFacility Operations and Maintenance, Municipal Wastewater Treatment Design

Author(s)

W. MartinW. Martin