Lake, Amanda

Presented at WEFTEC 2023.

Titles from this speaker

Getting to Grips With Grit: Opportunities For Circular Economy in Scotland

Abstract

Grit recovery in wastewater treatment offers an opportunity to realise additional value from wastewater residuals and an important opportunity to introduce Circular Economy in bioresources and residuals recovery - recognising global finite resources of mineral sands and the social, economic, environmental and carbon costs of extraction. The benefits of reusing grit are of increasing interest in Europe, in particular given increasing disposal costs, tightening regulation on organics to landfills and carbon impact of the current predominant landfill disposal route. This paper provides a case study from Scotland, United Kingdom where reuse options for grit from wastewater treatment are evaluated. It reviews current practice in beneficial grit reuse and presents outcomes for potential reuse opportunities and considerations, presenting case study cost and carbon impacts and regulatory framework considerations. Recommendations and opportunities for recognising the grit value chain are provided for the case study in context of the emerging Circular Economy.

SpeakerLake, Amanda

Presentation time

13:40:00

14:00:00

Session time

13:00:00

14:00:00

SessionHead(works) of the Class: Case Studies and Advancements in Grit Removal

Session number603

TopicFacility Operations and Maintenance, Global Perspectives, Municipal Wastewater Treatment Design

Author(s)

A. LakeA. LakeT. KennedyC. Stamper

Author(s)A. Lake1; A. Lake1; T. Kennedy2; C. Stamper3;

Author affiliation(s)Jacobs1; Scottish Water2; Zero Waste Scotland3

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2020

DOI10.2175/193864718825157560

Volume / Issue

Content sourceWEFTEC

Word count12

Nitrous Oxide: No Laughing Matter - Case Studies from Europe

Abstract

Whilst water utility greenhouse gas emissions may typically comprise only one percent of country level emissions, increasing decarbonisation of electricity supplies is pivoting focus to direct process emissions of nitrous oxide and methane from water resources recovery facilities. Nitrous oxide emissions present considerable challenges for utilities’ paths to net zero – in particular monitoring and mitigating these emissions. Production pathways for nitrous oxide from nitrifying and denitrifying processes are yet to be fully understood and approaches to mitigation remain the subject of ongoing academic and industry research. This project summarises the progress of selected utilities in Europe – using case studies from Denmark, the United Kingdom, and Netherlands where progressive utilities are showing ambition and progress in understanding and reducing their nitrous oxide emissions.

In Europe, increasing decarbonisation of electricity supplies is pivoting focus to direct process emissions of nitrous oxide and methane from water resources recovery facilities. Nitrous oxide emissions present considerable challenges for utilities’ paths to net zero – in particular monitoring and mitigating these emissions. Production pathways for nitrous oxide from nitrifying and denitrifying processes are yet to be fully understood and approaches to mitigation remain the subject of ongoing academic and industry research. This project summarises the progress using case studies from Denmark, the United Kingdom, and Netherlands where progressive utilities are showing ambition and progress.

SpeakerLake, Amanda

Presentation time

16:30:00

16:45:00

Session time

16:00:00

17:30:00

SessionKnowledge Development Forum: Decarbonization of the Water/Wastewater Sector

Session number114

TopicGlobal Perspectives, Research and Innovation, Sustainability and Climate Change, Utility Management and Leadership

Author(s)

Amanda Lake

Author(s)A. Lake1;A. Brotto1;J. Porro2;M. Andersen3;J. Sandino1;

Author affiliation(s)Jacobs, USA1Cobalt Water Global, USA2Unisense Environment, DE3

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2021

DOI10.2175/193864718825158176

Volume / Issue

Content sourceWEFTEC

Word count11

Tacking Fugitive Methane Emissions at WRRFs - Global Lessons

Abstract

Fugitive methane emissions from sludge treatment and biogas handling processes are a significant source of GHG emissions, particularly critical for WRRFs with anaerobic digestion. Sewer methane production can also contribute to significant GHG emissions for the entire wastewater systems. There is lack of consistent methodologies for quantifying and monitoring these emissions in North America, which could lead to over- or (more likely) underestimation of their contributions to the overall GHG footprint. Ongoing work in Europe show the criticality of direct methane emissions monitoring, and operational approaches to mitigate methane emissions through regular survey, proactive leak detection and repair and independent certification. This session will present an overview of the sources of fugitive methane emissions in collection systems and at WRRFs, available methodologies in monitoring and quantifying fugitive methane emissions (including challenges and issues), and practical tips for reducing methane emissions based on global case studies.

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

SpeakerLake, Amanda

Presentation time

13:30:00

15:00:00

Session time

13:30:00

15:00:00

SessionGlobal Approaches to Tackling Fugitive Methane Emissions

Session locationRoom S402a - Level 4

TopicIntermediate Level, Sustainability and Climate Change, Water Reuse and Reclamation

Author(s)

Lake, Amanda

Author(s)A. Lake 1; C. Scheutz 2 ; B. Beelen 3; E. Shen 4; P. Nielsen 5; A. Vellacot 6; A. Fredenslund 7; K. Kraemer 8;

Author affiliation(s)Jacobs 1; Technical University of Denmark 2 ; GHD 3; Jacobs 4; VCS Denmark 5; Jacobs 6; Technical University of Denmark 7; GHD 8;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825158977

Volume / Issue

Content sourceWEFTEC

Word count10