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Anaerobic Treatment
The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Gatze Lettinga – 1st expert on this subject based on the ideXlab platform
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Sustainable development in pollution control and the role of Anaerobic Treatment
Water Science and Technology, 2001Co-Authors: Gatze Lettinga, J.b. Van Lier, J.c.l. Van Buuren, Grietje ZeemanAbstract:The increasing scarcity of clean water sets the need for appropriate management of available water resources. Particularly regions suffering from a lack of water urgently need integrated environmental protection and resource conservation (EP and RC) technologies in order to enable effective management of the available water resources. EP and RC-concepts focus on pollution prevention and on a minimum of consumptive use of energy, chemicals, and water in pollution abatement and a maximum of re-use of treated wastewater, by-products and residues produced in the Treatment of waste and wastewater. Consequently, by implementing these concepts, waste(water)s like sewage and industrial effluents become an important source of water, fertilisers, soil conditioners and (frequently) energy instead of a social threat. In addition, a bridge is made between environmental protection and agriculture practice, stimulating (urban) agriculture in the neighbourhood of large cities. Anaerobic Treatment is considered as the core technology for mineralising organic compounds in waste(water) streams. Additional technologies are required to comply with the reuse criteria. Some examples of possible EP and RC concepts, using the Anaerobic Treatment technology for the reclamation of domestic sewage are discussed.
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Anaerobic Treatment of domestic sewage at low temperature
Water Science and Technology, 2001Co-Authors: T.a. Elmitwalli, Grietje Zeeman, Gatze LettingaAbstract:The results of research concerning the feasibility of Anaerobic Treatment of domestic sewage at low temperature are summarized in this article. The batch tests demonstrated a high biodegradability of domestic sewage at 20°C (74%). Both batch and continuous experiments for the Treatment of domestic sewage showed that the removal of SS prior to Anaerobic Treatment of domestic sewage not only provides a stable reactor performance but also improves the removal of both colloidal (CODcol) and dissolved COD (CODdis). The results of the pre-Treatment of domestic sewage in an Anaerobic filter (AF) and an Anaerobic hybrid (AH) reactor showed that the AF reactor is an efficient process for the removal of suspended COD (CODss), viz. 82%, at an HRT of 4 h and 13°C. The novel AF reactor consists of vertical sheets of reticulated polyurethane foam with knobs, where the biomass was only in attached form. For the Treatment of pre-settled sewage at 13°C, the AH reactor, with granular sludge, showed a higher total COD (CODt) removal than the UASB reactor as a result of higher CODcol removal. Therefore, the performance of a two-step system, AF+AH (with granular sludge) reactor, was investigated with different HRTs at 13°C. For optimization of CODss and CODdis an HRT of 4+4 h is needed, while for optimization of CODcol removal an HRT of 4+8 h is required. A CODt removal of 71% was achieved with 60% conversion to methane from the removed CODt when the AF+AH system was operated at an HRT of 4+8 h at 13°C.
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Anaerobic Treatment of sulfate-rich wastewaters
, 1999Co-Authors: P.n.l. Lens, Gatze LettingaAbstract:Until recently, biological Treatment of sulfate-rich wastewaters was rather unpopular because of the production of H 2 S under Anaerobic conditions. Gaseous and dissolved sulfides cause physical (corrosion, odour, increased effluent COD) or biological (toxicity) constraints, which may lead to process failure. Anaerobic Treatment of sulfate-rich wastewaters can nevertheless be applied successfully provided a proper Treatment strategy is selected. The strategies currently available are discussed in relation to the aim of the Treatment: i) removal of organic matter, ii) removal of sulfate or iii) removal of both. Also a whole spectrum of new biotechnological applications (removal of organic COD, sulfur, nitrogen and heavy metals), recently developed based on a better insight in sulfur transformations, are discussed.
Turgut T Onay – 2nd expert on this subject based on the ideXlab platform
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Anaerobic Treatment of dairy wastewaters a review
Process Biochemistry, 2005Co-Authors: Burak Demirel, Orhan Yenigun, Turgut T OnayAbstract:Abstract Anaerobic Treatment is often reported to be an effective method for treating dairy effluents. The objective of this paper is to summarize recent research efforts and case studies in Anaerobic Treatment of dairy wastewaters. The main characteristics of industrial dairy waste streams are identified and the Anaerobic degradation mechanisms of the primary constituents in dairy wastewaters, namely carbohydrates (mainly lactose), proteins and lipids are described. Primary attention is then focused on bench–pilot–full-scale Anaerobic Treatment efforts for dairy waste effluents. Combined (Anaerobic–aerobic) Treatment methods are also discussed. Finally, areas where further research and attention are required are identified.
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Anaerobic Treatment of dairy wastewaters: A review
Process Biochemistry, 2005Co-Authors: Burak Demirel, Orhan Yenigun, Turgut T OnayAbstract:Anaerobic Treatment is often reported to be an effective method for treating dairy effluents. The objective of this paper is to summarize recent research efforts and case studies in Anaerobic Treatment of dairy wastewaters. The main characteristics of industrial dairy waste streams are identified and the Anaerobic degradation mechanisms of the primary constituents in dairy wastewaters, namely carbohydrates (mainly lactose), proteins and lipids are described. Primary attention is then focused on bench-pilot-full-scale Anaerobic Treatment efforts for dairy waste effluents. Combined (Anaerobic-aerobic) Treatment methods are also discussed. Finally, areas where further research and attention are required are identified. © 2005 Elsevier Ltd. All rights reserved.
Burak Demirel – 3rd expert on this subject based on the ideXlab platform
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Anaerobic Treatment of dairy wastewaters a review
Process Biochemistry, 2005Co-Authors: Burak Demirel, Orhan Yenigun, Turgut T OnayAbstract:Abstract Anaerobic Treatment is often reported to be an effective method for treating dairy effluents. The objective of this paper is to summarize recent research efforts and case studies in Anaerobic Treatment of dairy wastewaters. The main characteristics of industrial dairy waste streams are identified and the Anaerobic degradation mechanisms of the primary constituents in dairy wastewaters, namely carbohydrates (mainly lactose), proteins and lipids are described. Primary attention is then focused on bench–pilot–full-scale Anaerobic Treatment efforts for dairy waste effluents. Combined (Anaerobic–aerobic) Treatment methods are also discussed. Finally, areas where further research and attention are required are identified.
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Anaerobic Treatment of dairy wastewaters: A review
Process Biochemistry, 2005Co-Authors: Burak Demirel, Orhan Yenigun, Turgut T OnayAbstract:Anaerobic Treatment is often reported to be an effective method for treating dairy effluents. The objective of this paper is to summarize recent research efforts and case studies in Anaerobic Treatment of dairy wastewaters. The main characteristics of industrial dairy waste streams are identified and the Anaerobic degradation mechanisms of the primary constituents in dairy wastewaters, namely carbohydrates (mainly lactose), proteins and lipids are described. Primary attention is then focused on bench-pilot-full-scale Anaerobic Treatment efforts for dairy waste effluents. Combined (Anaerobic-aerobic) Treatment methods are also discussed. Finally, areas where further research and attention are required are identified. © 2005 Elsevier Ltd. All rights reserved.