Near Future Energy Self-sufficient Wastewater Treatment Schemes

Sarpong, Gideon; Gude, Veera Gnaneswar

doi:10.1007/s41742-020-00262-5

Cited by 26 publications

(6 citation statements)

References 55 publications

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“…The 'carbon capture' technology based on sewage treatment refers to capturing COD in the influent into the sludge and generating energy through anaerobic digestion of the sludge. It is generally to increase the COD capture in the primary treatment of sewage treatment plants to increase energy production [14]. 'Carbon capture ' technology is mainly realized by high rate activated sludge process(HRAS) [15] and chemically enhanced primary treatment process(CEPT) [16].…”

Section: Carbon Capture Technologymentioning

confidence: 99%

Current Situation and Prospect in Urban Sewage Treatment Plants

Ding,

Li,

et al. 2024

E3S Web Conf.

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Sewage is the carrier of resources and energy, which contains great chemical energy and heat energy. The traditional sewage treatment process consumes energy, and the energy consumption is high. Under the background of carbon neutrality, China’s urban sewage treatment plants have achieved carbon neutrality operation in terms of energy self-sufficiency and reduction of greenhouse gas emissions. To explore the feasibility of carbon neutrality in sewage treatment plants, the cases of carbon neutrality in sewage treatment plants at domestic and abroad were analyzed. And the implementation approaches and main emission reduction processes to achieve carbon neutrality were summarized. The technical challenges and research directions of future sewage treatment plants in China from the perspective of carbon neutrality are proposed.

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Section: Carbon Capture Technologymentioning

confidence: 99%

Current Situation and Prospect in Urban Sewage Treatment Plants

Ding,

Li,

et al. 2024

E3S Web Conf.

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“…[ 30 ] This level is quite similar to USA where ≈80% of population receives sewage treatment services from municipal WWTPs contributing to more than ≈4% of the entire US electrical demand. [ 37 ] Electricity demand for WWTP was about the 0.8% of the electricity consumption in the EU‐28. [ 38 ] A recent worldwide survey of energy use in WWTP conclude that “(some) EU states had the largest average (water consumption) kWh m −3 with 1.18 which appeared a result of the higher wastewater effluent standards of the region.…”

Section: Circular Economy and Wastewater Resource Recoverymentioning

confidence: 99%

Challenges for Circular Economy under the EU 2020/741 Wastewater Reuse Regulation

Berbel

Mesa‐Pérez

Simón³

2023

Global Challenges

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Wastewater reuse is seen as an opportunity to support a circular economy and optimize water resources. However, the use of wastewater is limited by the need for the proper protection of health and the environment and demands a certain minimum quality of treated reclaimed water. The objective of this work is to evaluate the opportunities both for the agents in the water treatment chain (from municipalities to farmers) and for technology providers under the recently approved Regulation EU‐2020/741. The new market and opportunities require new value chains, technology development, governance, risk assurance, and adapted local regulation. Bottlenecks also pose technological, environmental, institutional, economic, and social challenges. The identified needs and barriers must be properly addressed in order to accelerate the transformation of the water sector toward the circular economy. As a conclusion, Reg EU 2020/741 introduces minimum requirements for urban wastewater reuse and requires the definition of risk management and transparency. The real impact of regulation on circular‐economy objectives is limited by water scarcity and crop profitability. Social acceptance is critical for success.

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“… 42 Scheme 5 (S5) includes enhanced primary settling techniques (in addition to longer hydraulic retention time, HRT) such as micro or disk filters to increase carbon capture to be processed in the anaerobic digester. 16 , 17 , 46 , 47 External organic feedstock such as fat, oil, and grease and high strength organic waste sludge from food, dairy, and agricultural industries are also fed to the digester to enhance biogas production. Scheme 6 (S6) considers the integration of biological carbon and nitrogen removal in a bioelectrochemical system using heterotrophic and mixotrophic (hetero and autotrophic) biofilms for bioelectricity generation.…”

Section: Evaluation Of Resource-efficient Process Schemesmentioning

confidence: 99%

“… Scheme 3 (S3) considers an integrated process including anaerobic treatment and anammox treatment processes to minimize aeration energy consumption for both organic carbon and nitrogen removal and increase sludge digestion to enhance methane production. ,, Scheme 4 (S4) considers a bioelectrochemical system where the organic matter is converted to an electron flow to be harvested as electricity followed by nitrogen removal in a simultaneous nitritation and anammox denitrification (SNAD) process (see Figure ). Scheme 5 (S5) includes enhanced primary settling techniques (in addition to longer hydraulic retention time, HRT) such as micro or disk filters to increase carbon capture to be processed in the anaerobic digester. ,,, External organic feedstock such as fat, oil, and grease and high strength organic waste sludge from food, dairy, and agricultural industries are also fed to the digester to enhance biogas production. Scheme 6 (S6) considers the integration of biological carbon and nitrogen removal in a bioelectrochemical system using heterotrophic and mixotrophic (hetero and autotrophic) biofilms for bioelectricity generation. , This configuration (ABC) facilitates simultaneous carbon and nitrogen removal by using an anammox biocathode process. Both S5 and S6 configurations involve enhanced carbon capture in primary treatment so that lower amounts of carbon will require further removal by biological processes (see Figure ).…”

Section: Evaluation Of Resource-efficient Process Schemesmentioning

confidence: 99%

“…Scheme 5 (S5) includes enhanced primary settling techniques (in addition to longer hydraulic retention time, HRT) such as micro or disk filters to increase carbon capture to be processed in the anaerobic digester. ,,, External organic feedstock such as fat, oil, and grease and high strength organic waste sludge from food, dairy, and agricultural industries are also fed to the digester to enhance biogas production.…”

Section: Evaluation Of Resource-efficient Process Schemesmentioning

confidence: 99%

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Transitioning Wastewater Treatment Plants toward Circular Economy and Energy Sustainability

2021

Self Cite

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Aging infrastructure, increasing environmental regulations, and receiving water environment issues stem the need for advanced wastewater treatment processes across the world. Advanced wastewater treatment systems treat wastewater beyond organic carbon removal and aim to remove nutrients and recover valuable products. While the removal of major nutrients (carbon, nitrogen, and phosphorus) is essential for environmental protection, this can only be achieved through energy-, chemical-, and cost-intensive processes in the industry today, which is an unsustainable trend, considering the global population growth and rapid urbanization. Two major routes for developing more sustainable and circular-economy-based wastewater treatment systems would be to (a) innovate and integrate energy- and resource-efficient anaerobic wastewater treatment systems and (b) enhance carbon capture to be diverted to energy recovery schemes. This Mini-Review provides a critical evaluation and perspective of two potential process routes that enable this transition. These process routes include a bioelectrochemical energy recovery scheme and codigestion of organic sludge for biogas generation in anaerobic digesters. From the analysis, it is imperative that integrating both concepts may even result in more energy- and resource-efficient wastewater treatment systems.

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Near Future Energy Self-sufficient Wastewater Treatment Schemes

Cited by 26 publications

References 55 publications

Current Situation and Prospect in Urban Sewage Treatment Plants

Current Situation and Prospect in Urban Sewage Treatment Plants

Challenges for Circular Economy under the EU 2020/741 Wastewater Reuse Regulation

Transitioning Wastewater Treatment Plants toward Circular Economy and Energy Sustainability

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