Journal ArticleDOI
Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment
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In this paper, the main results obtained with the process in the laboratory as well as in 6 m3 pilot plant and 200 m3 full-scale experiments are presented and evaluated in this paper.Abstract:
In recent years considerable effort has been made in the Netherlands toward the development of a more sophisticated anaerobic treatment process, suitable for treating low a strength wastes and for applications at liquid detention times of 3–4 hr. The efforts have resulted in new type of upflow anaerobic sludge blanket (UASB) process, which in recent 6 m3 pilot-plant experiments has shown to be capable of handling organic space loads of 15–40 kg chemical oxygen demand (COD)·m−3/day at 3–8 hr liquid detention times. In the first 200 m3 full-scale plant of the UASB concept, organic space loadings of up to 16 kg COD·m−3/day could be treated satisfactorily at a detention times of 4 hr, using sugar beet waste as feed. The main results obtained with the process in the laboratory as well as in 6 m3 pilot plant and 200 m3 full-scale experiments are presented and evaluated in this paper. Special attention is given to the main operating characteristics of the UASB reactor concept. Moreover, some preliminary results are presented of laboratory experiments concerning the use of the USB reactor concept for denitrification as well as for the acid formation step in anaerobic treatment. For both purposes the process looks feasible because very satisfactory results with respect to denitrification and acid formation can be achieved at very high hydraulic loads (12 day−1) and high organic loading rates, i.e., 20 kg COD·m−3/day in the denitrification and 60–80 kg COD·m−3/day in the acid formation experiments.read more
Citations
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Review paper on current technologies for decolourisation of textile wastewaters: Perspectives for anaerobic biotechnology
TL;DR: This paper provides a critical review on the current technologies available for decolourisation of textile wastewaters and it suggests effective and economically attractive alternatives.
Journal ArticleDOI
Production of bioenergy and biochemicals from industrial and agricultural wastewater.
Largus T. Angenent,Khursheed Karim,Muthanna H. Al-Dahhan,Brian A. Wrenn,Rosa Domíguez-Espinosa +4 more
TL;DR: There are several biological processing strategies that produce bioenergy or biochemicals while treating industrial and agricultural wastewater, including methanogenic anaerobic digestion, biological hydrogen production, microbial fuel cells and fermentation for production of valuable products, but there are also scientific and technical barriers to the implementation of these strategies.
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Towards practical implementation of bioelectrochemical wastewater treatment.
René A. Rozendal,René A. Rozendal,Hubertus V.M. Hamelers,Korneel Rabaey,Jurg Keller,Cees J.N. Buisman +5 more
TL;DR: These challenges are identified, an overview of their implications for the feasibility of bioelectrochemical wastewater treatment is provided and the opportunities for future BESs are explored.
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Electron transfer in syntrophic communities of anaerobic bacteria and archaea
TL;DR: The transfer of hydrogen and formate between bacteria and archaea that helps to sustain growth in syntrophic methanogenic communities is reviewed and the process of reverse electron transfer is described, which is a key requirement in obligately syntrophic interactions.
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Enhancement of biogas production from solid substrates using different techniques--a review.
TL;DR: The various techniques, which could be used to enhance the gas production rate from solid substrates are reviewed.
References
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Journal Article
The anaerobic filter for waste treatment
James C. Young,Perry L. McCarty +1 more
TL;DR: An entirely new anaerobic treatment process has been found to be particu larly effective for the treatment of low strength soluble organic wastes.
Journal ArticleDOI
Developments in Anaerobic Stabilization of Organic Wastes - The Two-Phase Concept
F G Pohland,S Ghosh +1 more
TL;DR: In this article, the two-phase concept of anaerobic stabilisation of organic wastes is proposed. But the two phases are different in different ways and cannot be used simultaneously.
Journal ArticleDOI
Anaerobic treatment of methanolic wastes
TL;DR: In this paper, the effect of pH, bicarbonate alkalinity and trace elements on the methane fermentation of pure aqueous solutions of methanol has been investigated.
Journal ArticleDOI
Dynamics of liquid flow in an up-flow reactor-used for anaerobic treatment of wastewater
TL;DR: By means of stimulus‐response experiments with a Li+ tracer, a description of the fluid flow in a 30 m3 reactor, used for anaerobic treatment of wastewater, was derived and it was concluded that 60 m3 gas/day were sufficient to provide good mixing and also that the height of the sludge bed should be 2–3 m.
Journal ArticleDOI
Anaerobic digestion of raw sewage
TL;DR: In this paper, the use of the anaerobic contact process for pre-treatment of raw sewage is described using a rather simple settling system combined with a stone packed bio-physical filter.