A Greenhouse Gas Emissions Accounting Model for Biosolids Management Planning

Gould, Mark; Bandi, Ravi Tej

doi:10.2175/193864708788807024

Cited by 3 publications

(7 citation statements)

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“…Net greenhouse gas emissions from the sludge handling process alternatives evaluated in the BMP were projected using a greenhouse gas spreadsheet model developed by Mark Gould and Ravi Tej Bandi of CDM (Gould and Bandi, 2008). This model incorporates calculations and default values from the work of the United Nations Clean Development Mechanism under the Kyoto Accord, as well as other tools that evaluate greenhouse gas emissions reduction credits for environmental projects.…”

Section: Greenhouse Gas Emissions Accounting Modelmentioning

confidence: 99%

“…Through calculation worksheets, emissions related to the process from all three scopes are determined, including Scope 2 emissions from electricity use by pumps and other auxiliary equipment, and Scope 1 and 3 emissions through consumables, such as fuel and chemicals. (Gould and Bandi, 2008) The model compiles all of the impacts, whether instigative or reductive, on greenhouse gas emissions from thickening, liquid stabilization, dewatering, cake stabilization, and end use or disposal, into a carbon dioxide emissions equivalent. Three of the six greenhouse gases regulated by the Kyoto Protocol typically found in wastewater treatment operations -carbon dioxide, methane, and nitrous oxide -are accounted for in process operations tracked by the model.…”

Section: Greenhouse Gas Emissions Accounting Modelmentioning

confidence: 99%

“…The model treats one equivalent as equal to one short ton of carbon dioxide emitted, and methane and nitrous oxide emissions are related to carbon dioxide equivalents, in terms of their global warming potentials. An overview of the greenhouse gas impacts tracked by the model can be found in Gould and Bandi (2008).…”

Section: Greenhouse Gas Emissions Accounting Modelmentioning

confidence: 99%

“…These standardized and plant-specific alternatives are represented in Table 1. (Gould and Bandi, 2008) The base model was customized in several different respects. Additional worksheets were added to expand the model's capabilities and modify input values, calculation factors, and equations to be more representative of existing processes at the WPCPs, as well as the ones proposed in the BMP.…”

Section: Model Customizationsmentioning

confidence: 99%

“…Greenhouse gas emissions for these scenarios were evaluated and valued relative to incurred operating costs, using a model developed by Gould and Bandi (2008) and customized specifically for the project. The model analyzes energy and chemical consumption, sidestream electrical treatment demands, and other factors in the production of emissions sources and sinks at each process stage, to yield a net greenhouse gas carbon dioxide equivalent value as a function of the mass of solids processed.…”

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confidence: 99%

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Modeling Greenhouse Gas Emissions Impacts in NYC Biosolids Management Planning

Pun¹,

Baldwin²,

Mahoney³

et al. 2010

proc water environ fed

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During development of the New York City Biosolids Management Plan, recommendations were made for future sludge handling upgrades at 13 water pollution control plants, from nine biosolids treatment process scenarios. Greenhouse gas emissions for these scenarios were evaluated and valued relative to incurred operating costs, using a model developed by Gould and Bandi (2008) and customized specifically for the project. The model analyzes energy and chemical consumption, sidestream electrical treatment demands, and other factors in the production of emissions sources and sinks at each process stage, to yield a net greenhouse gas carbon dioxide equivalent value as a function of the mass of solids processed. The model also applied cost factors derived from carbon credit market performance and projected market pricing, to assign a monetary value to the emissions.It was found that most treatment process and plant combinations resulted in a net greenhouse gas emissions offset, with peak offsets achieved in the neighborhood of 0.5 short tons of carbon dioxide equivalent per dry ton of sludge solids. At peak levels, total emissions offsets at all 13 plants ranged between 139,000 and 175,000 short tons of carbon dioxide equivalents. Peak offsets were valued at 0.35 to 0.45 percent of projected annual operating costs.Model results were used in conjunction with separate traditional evaluations of capital and operating costs involved in implementing selected process scenarios at each plant, to justify planning recommendations. Model sensitivity analyses identified significant contributing factors to greenhouse gas emissions associated with solids handling processes and promoted supplementary operational recommendations.

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Section: Greenhouse Gas Emissions Accounting Modelmentioning

confidence: 99%

Section: Greenhouse Gas Emissions Accounting Modelmentioning

confidence: 99%

Section: Greenhouse Gas Emissions Accounting Modelmentioning

confidence: 99%

Section: Model Customizationsmentioning

confidence: 99%

mentioning

confidence: 99%

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Modeling Greenhouse Gas Emissions Impacts in NYC Biosolids Management Planning

Pun¹,

Baldwin²,

Mahoney³

et al. 2010

proc water environ fed

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Integrated life-cycle data envelopment analysis for techno-environmental performance evaluation on sludge-to-energy systems

et al. 2020

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Developing the Overall Performance Index for Water Supply Systems based on Fair Benchmarking and Strong Sustainability

Baniasadi,

Mehrabadi

2024

Preprint

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Performance assessment indicators play a crucial role in evaluating water supply systems (WSSs). Developing a Composite Indicator (CI) that integrates key performance indicators (KPIs) offers significant advantages. This study aims to explore various aspects of creating a CI for assessing WSS performance, including clustering, normalizing, weighting, and aggregating KPIs. Data corresponding to selected KPIs from diverse WSSs in Iran were collected and categorized into four dimensions: Environmental, Financial, Organizational, and Social, to ensure comprehensive performance evaluation and calculation of an Overall Performance Index (OPI). A new multi-criteria method was employed to assign weights to KPIs in the CI Based on the concept of non-compensation. WSSs were grouped into clusters based on population, water resource type, and climate, and KPIs were normalized accordingly based on fair benchmarking. A non-linear (Geometric) method was utilized to aggregate KPIs, emphasizing strong sustainability and non-compensation interactions. The change in the results of the selected method was compared with the previous methods. The study found that method variation at each stage of CI development significantly affected the OPI and ranking of WSSs. Population emerged as a significant factor, and key findings include the substantial impact of resource type and climate on specific KPIs, underscoring the need to consider influencing factors in benchmarking. The non-linear aggregation method demonstrated greater rigor and sustainability compared to linear methods, aligning with principles of fair benchmarking and WSS sustainability.

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A Greenhouse Gas Emissions Accounting Model for Biosolids Management Planning

Cited by 3 publications

References 0 publications

Modeling Greenhouse Gas Emissions Impacts in NYC Biosolids Management Planning

Modeling Greenhouse Gas Emissions Impacts in NYC Biosolids Management Planning

Integrated life-cycle data envelopment analysis for techno-environmental performance evaluation on sludge-to-energy systems

Developing the Overall Performance Index for Water Supply Systems based on Fair Benchmarking and Strong Sustainability

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