Where is the greatest potential for resource recovery in wastewater treatment plants?

Renfrew, D.; Vasilaki, V.; MLeod, A.; Lake, A.; Daneshvar, Sabalan; Katsou, Evina

doi:10.1016/j.watres.2022.118673

Cited by 30 publications

(13 citation statements)

References 34 publications

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“…Before indicator selection and circular solution modelling, the appropriate technologies must be selected for assessment. This can be achieved using literature review, case study surveys, or structured multi-criteria analysis 11 methods to select circular solutions that align with decision maker or assessor goals. The conventional system model must have a degree of exibility that enables the integration of the selected circular solutions.…”

Section: Framework Explanationmentioning

confidence: 99%

“…Selecting technologies can be a challenge for wastewater decision makers, due to the ever-growing list of available options. Many multi-criteria decision making (MCDM) tools have been developed speci cally for wastewater systems, that can rationalise options according to the user's priorities 11,74 . Therefore, this assessment methodology can investigate and validate the outcomes from MCDM analysis for selecting circular technologies, as evidence for investment by water utility companies.…”

Section: Systematic Assessment For Decision Makingmentioning

confidence: 99%

“…The circular use of wastewater has attracted signi cant attention in recent years, shifting the focus from treatment to recovery. This has the potential to overcome many issues triggered by population growth, urbanisation, and industrialism by recovering water, generating energy, and capturing nutrients for fertiliser production 11,12 . The need for specialised tools to realise a circular water sector is shown by the recent efforts of water utilities and stakeholders at a national level, such as KWR's dashboard for a circular water sector 13 , UK Water Industry Research's vision and pathway for a circular economy water industry 14 , and The World Bank's Water in Circular Economy and Resilience (WICER) framework 15 .…”

Section: Introductionmentioning

confidence: 99%

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Resource flow characterisation and sustainable value creation analysis for the holistic circularity assessment of wastewater systems

Renfrew

Vasilaki

Nika

et al. 2023

Preprint

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The water sector is at the forefront of the circular economy transition due to the direct reliance industry and society has on clean water supply and adequate wastewater management. The circular use of wastewater has attracted significant attention in recent years, however, there is a lack of universal definitions and measurement tools required to achieve the circular economy’s full potential. The proposed methodology overcomes prominent problems for the circularity assessment of wastewater treatment processes. The resource classification framework developed facilitates robust indicator calculation for comparative assessments. Combining three indicator typologies, namely resource flow, action, and sustainability indicators, enables a normative circularity assessment, that uses value propositions to identify circular actions for the systematic investigation of the impacts to sustainable value creation. The assessment is exhibited by applying it to a case study, comparing conventional and novel photobioreactor wastewater treatment technologies. Resource flow indicator results highlighted improved outflow circularity, renewable energy usage, and economic performance of the photobioreactor system. Action indicators revealed that the photobioreactor technology was successful at achieving the defined value creating goals. Lastly, sustainability indicators enabled the direct quantification of environmental, economic, and social value creation, confirming that stakeholder benefits result from the photobioreactor wastewater treatment technology.

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Section: Framework Explanationmentioning

confidence: 99%

Section: Systematic Assessment For Decision Makingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Resource flow characterisation and sustainable value creation analysis for the holistic circularity assessment of wastewater systems

Renfrew

Vasilaki

Nika

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…[2,3] With the emergence of the concept of circular water economy, water reuse, and wastewater recovery are emphasized to cope with the shortage of freshwater resources and extreme climate change. [4,5] If seawater or brackish water, 97% of the earth's water volume, can be converted into fresh water through appropriate technology, reactions is greatly reduced, which makes it more valuable in desalination of high salt water such as seawater and brackish. [23] Therefore, Faradic CDI has attracted extensive attention from researchers, and the desalination capacity is also gradually improved with deeper exploration.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress and Challenges in Faradic Capacitive Desalination: From Mechanism to Performance

Hao

Sun

Chen

et al. 2023

Small

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Due to substantial consumption and widespread contamination of the available freshwater resources, green, economical, and sustainable water recycling technologies are urgently needed. Recently, Faradic capacitive deionization (CDI), an emerging desalination technology, has shown great desalination potential due to its high salt removal ability, low consumption, and hardly any co‐ion exclusion effect. However, the ion removal mechanisms and structure–property relationships of Faradic CDI are still unclear. Therefore, it is necessary to summarize the current research progress and challenges of Faradic CDI. In this review, the recent progress of Faradic CDI from five aspects is systematically reviewed: cell architectures, desalination mechanisms, evaluation indicators, operation modes, and electrode materials. The working mechanisms of Faradic CDI are classified as insertion reaction, conversion reaction, ion‐redox species interaction, and ion‐redox couple interaction in the electrolytes. The intrinsic and desalination properties of a series of Na+ and Cl− capturing materials are described in detail in terms of design concepts, structural analysis, and synthesis modulation. In addition, the effects of different cell architectures, operation modes, and electrode materials on the desalination performance of Faradic CDI are also investigated. Finally, the work summarizes the challenges remaining in Faradic CDI and provides the prospects and directions for future development.

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“…Under the background of carbon neutralization, the carbon neutralization operation of low-carbon urban domestic sewage plants is undoubtedly the future development direction of the wastewater treatment industry. The total amount of carbon dioxide directly or indirectly emitted by WWTPs in a certain period of time is offset by self-produced clean energy, adopting low-energy treatment process, and implementing energy-saving transformation of equipment, so as to realize the net “zero emission” of GHGs in WWTPs, which has the advantages of low energy consumption, low emission, and sustainability [ 12 , 13 ]. The latest research progress of carbon neutralization technology in WWTPs was investigated, and the energy consumption value was analyzed, in order to provide reference for the realization of carbon neutralization operation of urban WWTPs in China.…”

Section: Introductionmentioning

confidence: 99%

Insight into Greenhouse Gases Emissions and Energy Consumption of Different Full-Scale Wastewater Treatment Plants via ECAM Tool

Tian

Liu

Zheng

et al. 2022

IJERPH

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Greenhouse gas (GHG) production is one of the urgent problems to be solved in the wastewater treatment industry in the context of “carbon neutrality”. In this study, the carbon emissions and energy consumption of typical wastewater treatment processes in China were evaluated, starting from different cities and water treatment plants. Tool of Energy Performance and Carbon Emission Assessment and Monitoring (ECAM) was used. By comparing the influent BOD5, it was found that the energy consumption for wastewater treatment was positively correlated with the influent organic load. The annual CH4 emission of Xi’an WWTP can reach 19,215 t CO2eq. Moreover, GHGs are closely related to the wastewater treatment process chosen. WWTP B of Kunming used only an anaerobic process without continuous aeration, with an average monthly energy consumption of 8.63 × 105 kW·h. The proportion of recoverable biogas was about 90% in the GHG discharged by the traditional process. However, the anaerobic digestion-thermoelectric cogeneration process can make the recovery of the biogas utilization ratio reach 100%. Compared to the Shuozhou WWTP and WWTP A of Kunming, the Strass WWTP served the smallest population and had the largest treatment capacity, reaching the lowest energy consumption, consuming only 23,670 kW·h per month. The evaluation and analysis of ECAM provide data support and research foundation for the wastewater treatment plants to improve energy utilization and reduce greenhouse gas emissions.

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Where is the greatest potential for resource recovery in wastewater treatment plants?

Cited by 30 publications

References 34 publications

Resource flow characterisation and sustainable value creation analysis for the holistic circularity assessment of wastewater systems

Resource flow characterisation and sustainable value creation analysis for the holistic circularity assessment of wastewater systems

Recent Progress and Challenges in Faradic Capacitive Desalination: From Mechanism to Performance

Insight into Greenhouse Gases Emissions and Energy Consumption of Different Full-Scale Wastewater Treatment Plants via ECAM Tool

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