Resource recovery and wastewater treatment modelling

Solon, Kimberly; Volcke, Eveline; Spérandio, Mathieu; Loosdrecht, Mark Cm van

doi:10.1039/c8ew00765a

Cited by 50 publications

(33 citation statements)

References 108 publications

(93 reference statements)

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“…This is also valid for costbenefit calculations of CEPT units as polymers represent an additional cost factor. 35 Furthermore, also AD integration can lead to severe hidden direct CH 4 emissions which may even exceed emissions avoided through energy recovery from biogas combustion. 58 In addition, the integration of ADbased energy recovery technologies leads to higher operational costs as integrated units need regular maintenance like e.g.…”

Section: Environmental Science: Water Research and Technology Papermentioning

confidence: 99%

“…20,34 This can be achieved through mass and energy balances (MEBs) which allow to model how wastewater constituents are converted in a particular treatment process. 35 In comparison to each other they provide insight on how integrated recovery technologies may influence each other in terms of recoverable products from a process. Therefore, the comparison based on MEBs of different process designs potentially applicable to a municipal wastewater stream helps to find the process that is most feasible from a resource recovery perspective.…”

Section: Introductionmentioning

confidence: 99%

“…However, optimal resource recovery technology integration always depends on site specific circumstances of the treatment process because influent compositions, treatment technologies, or local market conditions for recovered resources may vary greatly. 35,37 Therefore, this analysis exemplifies selected resource recovery potentials and tradeoffs along the case of the Utrecht WWTP in The Netherlands. The plant uses the AGS treatment process and was designed without any resource recovery technology integration.…”

Section: Introductionmentioning

confidence: 99%

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Exploring resource recovery potentials for the aerobic granular sludge process by mass and energy balances – energy, biopolymer and phosphorous recovery from municipal wastewater

Kehrein

Loosdrecht

Osseweijer

et al. 2020

Environ. Sci.: Water Res. Technol.

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Section: Environmental Science: Water Research and Technology Papermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploring resource recovery potentials for the aerobic granular sludge process by mass and energy balances – energy, biopolymer and phosphorous recovery from municipal wastewater

Kehrein

Loosdrecht

Osseweijer

et al. 2020

Environ. Sci.: Water Res. Technol.

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“…Meanwhile, the high chemical oxygen demand, dissolved salts content and micro-pollutant make certain biogenic wastes difficult to be handled by the conventional biological approach. New and more integrated anaerobic treatments for biogas production and material recycling may thereby need to be considered and evaluated [161][162][163][164][165][166][167][168][169][170][171][172][173]. It is firmly believed by the authors that, due to the large volume and heterogeneity of waste produced, from both an economical and technological point of view, the best solution for organic wastes does not always lie in the choice and implementation of a single or typical process technology.…”

Section: Waste Valorizationmentioning

confidence: 99%

A critical review: emerging bioeconomy and waste-to-energy technologies for sustainable municipal solid waste management

Tsui

Wong

2019

Waste Dispos. Sustain. Energy

131

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Municipal solid waste (MSW) management has emerged as probably the most pressing issue many governments nowadays are facing. Traditionally, Waste-to-Energy(WtE) is mostly associated with incineration, but now, with the emergence of the bioeconomy, it embraces a broader definition comprising any processing technique that can generate electricity/heat or produce a waste-derived fuel. Under the ambit of the circular economy many nations are looking for, additional effort must be made to be sure of acquiring the most updated information and paving a sustainable path for managing MSW in such a frame. In this regard, we have undertaken a critical review of various technologies, with their updated progress, involved in the exploitation of MSW as a renewable resource, along with the critical advantages and limitations on energy and material cycling for sustainable MSW management. Incineration, the most widely used method, is nowadays difficult to further apply due to its dubious reputation and social opposition. Meanwhile, to address the organic fraction of MSW which currently is mostly unrecycled and causes disposal issues, the biological approach presents an attractive option. The new emphasis of bioeconomy leads us to understand how environmental biotechnologies should be better connected/integrated for more sustainable MSW management. This article is concluded with advances of future prospects, which can serve as a timely reminder to encourage competent authorities/researchers to work towards further improvement of the present MSW management system.

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“…Regulators are placing increasing restrictions on wastewater effluent quality while influent characteristics are dynamic due to seasonality, weather, and other perturbations. Handling this uncertainty in input while achieving a reproducible effluent quality which meets licensing restrictions means that a deeper understanding of process mechanisms and uncertainty is required [17]. Process models for wastewater treatment are good tools to address these restrictions and obligations.…”

Section: Modelling In Wastewatermentioning

confidence: 99%

Distributed parameter modelling of phototrophic bioreactor systems

Barry¹

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Purple phototrophic bacteria (PPB) use infrared light to generate microbial energy, with electron, carbon and nitrogen supplied chemically. They have broad applicability for resource recovery from wastes and wastewater, as they have potential value as microbial product and very high growth yields on substrate. Although PPB processes are gaining relevance in the aforementioned industries, reactor design, particularly effective consideration of light in chemical kinetics and hydraulics is a critical issue. This thesis aims to assess key limitations and define their physical behaviour mathematically. The first limitation was that there was no mixed culture PPB process model describing the behaviour of PPB in the presence of ammonia, organic matter and other nutrients. The mixed population models of the International Water Association (IWA) provide a good framework for process modelling and control. As such, a process model for a mixed-culture PPB system was developed based on five key processes: photoheterotrophic growth, photoautotrophic growth, chemoheterotrophic growth, hydrolysis/fermentation, and decay. This model was developed as a set of ordinary differential equations varying in time and lumped in space (as for the IWA models). The second limitation is that the radiative field has not been considered. This can vary spatially and temporally. The radiative field in a PPB system attenuates sharply, which influences the growth domains. A CFD modelling framework was therefore developed in OpenFOAM to describe the spatial variations and interactions between biomass growth, the flow field and the radiative field. It was found that lumped modelling approaches and distributed parameter approaches differed in results based on different reactor domains and behaviours. The deviation from lumped parameter behaviour was greater for a cylindrical stirred reactor than for a flat plate reactor. Therefore, spatial considerations are necessary in the design phase of a photobioreactor. Finally, biofilms are a critical aspect in PPB growth, and a coupled biofilm radiative transfer model has not been previously considered. The model was thus extended to include biofilm formation of a mixed PPB system in the presence of a spatially varying radiative field. A volume-of-fluid approach was used as a basis for this model, considering three particulate species (phototrophic bacteria, biodegradable particulate matter, and inert particulates). The radiative-solid-liquid coupling overall was found to be critical in operation, with traditional lumped parameter approaches to design and analysis not well suited to the emerging challenges of mixed culture photo-bio systems. These aspects should be further considered through model based analysis and experimental validation for future system design.

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Resource recovery and wastewater treatment modelling

Abstract: This paper discusses the extent to which new unit processes applied for resource recovery can be modelled with conventional ASMs, the additional modelling challenges being faced, while providing recommendations on how to address current modelling research gaps.

Cited by 50 publications

References 108 publications

Exploring resource recovery potentials for the aerobic granular sludge process by mass and energy balances – energy, biopolymer and phosphorous recovery from municipal wastewater

Exploring resource recovery potentials for the aerobic granular sludge process by mass and energy balances – energy, biopolymer and phosphorous recovery from municipal wastewater

A critical review: emerging bioeconomy and waste-to-energy technologies for sustainable municipal solid waste management

Distributed parameter modelling of phototrophic bioreactor systems

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