Life cycle cost analysis of wastewater treatment: A systematic review of literature

Ilyas, Muhammad; Kassa, Freselam Mulubrhan; Darun, Mohd Ridzuan

doi:10.1016/j.jclepro.2021.127549

Cited by 36 publications

(15 citation statements)

References 90 publications

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“…In particular, the assessment of CAPEX can be problematic due to the low availability of cost data. To overcome this issue, Ilyas et al (2021) suggest using cost estimation relationships (CERs), that is, a mathematical relationship that defines the infrastructure cost as a function of one or more variables, for example, performance, operating characteristics, or physical characteristic, among others. Using the cost estimations per volume unit V of built infrastructure, as reported by Saleh et al (2018), CAPEX is expressed as…”

Section: Methodsmentioning

confidence: 99%

A Proof-of-Concept of a Reliability-Based Life-Cycle Cost Optimization Framework for Activated Sludge Processes

Borobio-Castillo,

Cabrera-Miranda,

Corona-Vasquez

2023

Air, Soil and Water Research

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Wastewater treatment plants need their reliability to be properly assessed to preserve society’s health and availability of water resources. To date, no wastewater treatment plant framework comprehends the reliability of the system, considering the influence of uncertain parameters, and the total costs during the lifespan of the project. Here, an innovative framework combining a reliability analysis, a reliability-sensitivity analysis, and a life-cycle cost assessment is presented as a proof-of-concept tool for reliability-based life-cycle cost optimization of an activated sludge process due to its common application in sanitation worldwide. The results indicate (1) great variability of the reliability scenario due to the influent loads, (2) the sludge volumetric index exerts the most influence on the system’s reliability and risk expenditures, and (3) an optimum scenario associated with the lowest life-cycle cost and an annual failure rate of 19 day of failure year−1 can be obtained via an exhaustive simulation protocol. The framework demonstrates to be a promising tool for techno-economic analysis of activated sludge processes, as well as to optimize project expenditures based on its reliability to withstand different influent loads. This proof-of-concept optimization framework is expected to find multiple applications not only in sanitation and water treatment but also in other industries while supporting sustainable development goals.

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Section: Methodsmentioning

confidence: 99%

A Proof-of-Concept of a Reliability-Based Life-Cycle Cost Optimization Framework for Activated Sludge Processes

Borobio-Castillo,

Cabrera-Miranda,

Corona-Vasquez

2023

Air, Soil and Water Research

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“…Life cycle assessment (LCA) is an environmental tool used to assess the life cycle impact of a product or process. , Lorenzo-Toja et al pointed out that life cycle assessments of wastewater treatment plants that do not consider greenhouse gas emissions may underestimate their environmental impact . In recent years, many scholars have carried out a series of LCA on greenhouse gas emissions from sewage treatment technologies.…”

Section: Carbon Emission Accounting For Membrane Water Treatment Tech...mentioning

confidence: 99%

Carbon Emission Calculations and Reductions in Membrane Water Treatment: A Review

Li,

Duan,

et al. 2023

ACS EST Water

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Membrane technology has become a key common technology to solve major problems in the fields of global water resources, energy, and the environment and is one of the most developed high-tech methods in the 21 st century. However, due to the high cost and low reuse rate of membrane technology, its energy consumption and carbon footprint are still high, which is the main factor limiting its use. Therefore, we need to clarify the method used to calculate greenhouse gas emissions from this technology and put forward effective emission reduction programs. Based on the life cycle assessment method, the accounting boundary of greenhouse gas emissions from membrane technology is defined. According to this boundary, the greenhouse gas emissions in the whole life cycle of membrane technology are divided into direct emissions, indirect emissions, and carbon compensation, and the measured emission factor method is used to calculate the greenhouse gas emissions. Then, we discuss the effective pathways for reducing carbon emissions by this technology: (1) reduce energy consumption by optimizing operating conditions and coupling membrane systems with clean energy; (2) recover and utilize organic matter byproducts and recycled water; and (3) recycle waste membrane components in whole or in part. Studies have found that membrane technology can overcome its current challenges and even achieve net zero emissions under a recycling scheme, but quantitative data are still lacking. Finally, we hope to provide a valuable reference for carbon emission accounting and carbon emission reduction in studies of membrane technology.

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“…The total cost of new organic fertilizer is low due to its advantages in improving soil quality, enhancing crop quality, and reducing agricultural non-point source pollution. Life cycle cost refers to the sum of all costs related to the life cycle of the product system, including initial and operating costs [83]. If life cycle cost information can be indicated for new organic and traditional chemical fertilizers, then the preference of farmers for new organic fertilizers can be nudged, and the proportion of organic fertilizers usage can be gradually increased.…”

Section: Benefit Motives Nudge Arable Land Protection Behaviormentioning

confidence: 99%

Nudging Strategies for Arable Land Protection Behavior in China

Zhang

Zou

et al. 2022

IJERPH

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Arable land protection is critical to the sustainable development of agriculture in China and acceleration of the realization of the trinity protection goal of the quantity, quality, and ecology of arable land. As a new program of behavioral science to promote social development, nudge has gradually gained the favor of researchers and policy makers due to its unique advantages of small cost and substantial effect. However, current research and practical exploration of arable land protection behavior intervention based on the idea of nudging are still lacking. Implicit nudging strategies directly target the heuristic and analytic systems of arable land protection behavior of each stakeholder and possess more advantages than traditional intervention strategies. Therefore, this article designs six arable land protection behavior nudging strategies from the perspectives of cognition and motivation to realize the theoretical discussion of “generating medium-scale returns with nano-level investment”. The nudging strategies of the cognitive perspective include default options, framing effects, and descriptive norms, while those of the motivation perspective aim to stimulate home and country, and heritage and benefit motives to promote arable land protection behavior of various stakeholders. The utility of nudge to arable land protection behavior may be controversial in practice. Therefore, the implementation in China should be based on the division of farmers, the number of options should be appropriate, and the external environment of arable land protection behavior should be fully considered.

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Life cycle cost analysis of wastewater treatment: A systematic review of literature

Cited by 36 publications

References 90 publications

A Proof-of-Concept of a Reliability-Based Life-Cycle Cost Optimization Framework for Activated Sludge Processes

A Proof-of-Concept of a Reliability-Based Life-Cycle Cost Optimization Framework for Activated Sludge Processes

Carbon Emission Calculations and Reductions in Membrane Water Treatment: A Review

Nudging Strategies for Arable Land Protection Behavior in China

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