Phosphorrecycling durch Mitverwertung von Klärschlammaschen bei der Phosphorsäureherstellung

Herr, Patrick; Mocker, M.; Zollfrank, Cordt; Gaderer, Matthias; Mayer, W.

doi:10.1002/cite.201900155

Chemie Ingenieur Technik

2020

DOI: 10.1002/cite.201900155

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Phosphorrecycling durch Mitverwertung von Klärschlammaschen bei der Phosphorsäureherstellung

Patrick Herr

M. Mocker

Cordt Zollfrank

et al.

Abstract: Es wurde der Ansatz der Phosphorrückgewinnung aus Klärschlammasche durch Mitverwertung bei der konventionellen nasschemischen Phosphorsäureherstellung untersucht. Laborversuche mit realen Klärschlammaschen unter simulierten Industriebedingungen ergaben, dass eine direkte Beimischung der Asche zum Primärrohstoff Rohphosphat verschiedene verfahrenstechnische Nachteile mit sich bringt. Als Alternative zur direkten Beimischung wird das verfahrenstechnische Konzept der Rückstromextraktion vorgeschlagen, dessen Umse… Show more

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Displacement Washing of Filter Cakes With a Fine Particle Top Layer

Sauer,

Löwer,

Henn

et al. 2024

Chem Eng & Technol

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Displacement washing of filter cakes is a critical process in various filtration applications and the presence of a top layer of fine particles from preceding cake filtration may influence washing efficiency. To investigate the effect of such a top layer on the displacement washing process, filter cakes with solid volume fractions ranging from 15 % to 33 % are formed from crushed, irregularly shaped limestone particles of about 10 to 250 µm to minimize or induce segregation effects due to sedimentation superimposed on cake filtration. The structural properties of the filter cakes are measured using X‐ray microscopy and dynamic image analysis. To predict the influence of cake structure on displacement washing, an advection–dispersion model is employed. Comparison between prediction and experimental data shows good agreement, highlighting the impact of cake structure on washing efficiency and providing valuable insights for optimizing displacement washing processes in industrial applications.

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Displacement Washing of Filter Cakes With a Fine Particle Top Layer

Sauer,

Löwer,

Henn

et al. 2024

Chem Eng & Technol

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Combined filtration and oxalic acid leaching for recovering phosphorus from hydrothermally carbonized sewage sludge

Waldmüller

Herdzik

Gaderer

2021

Journal of Environmental Chemical Engineering

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Feasibility analysis of the market-oriented construction management model of drainage project based on evolutionary game

Liu,

Wang

2024

Water Science &Amp; Technology

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The construction and operational costs of drainage projects are high. Traditional construction management models impose significant financial pressure on the government and reduce stakeholder motivation. Within the market-oriented development context, reforming the construction management model is crucial for breaking the current predicament. This research establishes a framework for the market-oriented construction management model for drainage projects and constructs a behavioral strategy evolutionary game model involving government, drainage management companies, and pollution discharge subjects. Through theoretical analyses and simulations, this research presents recommendations for the implementation of the market-oriented model. The research findings indicate that: (1) the market-oriented model is feasible both theoretically and practically. Pollution rights trading aids pollution discharge subjects in adapting to the market-oriented model. (2) Ensuring sewage charges remain within the interval [P1, P1 + L2 − L1] is crucial for trilateral cooperation. (3) Simulation analysis shows that intensifying policy support, reducing the cost of technological equipment upgrades, enhancing comprehensive income, lowering the pricing of sewage charges, and raising initial selection probability all promote a tendency towards ESS.

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Phosphorrecycling durch Mitverwertung von Klärschlammaschen bei der Phosphorsäureherstellung

Cited by 3 publications

References 6 publications

Displacement Washing of Filter Cakes With a Fine Particle Top Layer

Displacement Washing of Filter Cakes With a Fine Particle Top Layer

Combined filtration and oxalic acid leaching for recovering phosphorus from hydrothermally carbonized sewage sludge

Feasibility analysis of the market-oriented construction management model of drainage project based on evolutionary game

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