Journal ArticleDOI
Limitations of thermophilic anaerobic wastewater treatment and the consequences for process design.
Reads0
Chats0
TLDR
In this article, the process stability of thermophilic anaerobic wastewater treatment systems is investigated and a relatively low sensitivity to temperature changes if high-rate reactors with immobilized biomass are used.Abstract:
Thermophilic anaerobic digestion offers an attractive alternative for the treatment of medium- and high-strength wastewaters. However, literature reports reveal that thermophilic wastewater treatment systems are often more sensitive to environmental changes than the well-defined high-rate reactors at the mesophilic temperature range. Also, in many cases a poorer effluent quality is experienced while the carry over of suspended solids in the effluent is relatively high. In this paper recent achievements are discussed regarding the process stability of thermophilic anaerobic wastewater treatment systems. Laboratory experiments reveal a relatively low sensitivity to temperature changes if high-rate reactors with immobilized biomass are used. Other results show that if a staged process is applied, thermophilic reactors can be operated for prolonged periods of time under extreme loading conditions (80-100 kg chemical oxygen demand.m-3.day-1), while the concentrations of volatile fatty acids in the effluent remain at a low level.read more
Citations
More filters
Journal ArticleDOI
Efeito do bicarbonato de sódio no tratamento de vinhaça em AnSBBR operado a 55 e 35ºC
TL;DR: In this paper, the influence of the sodium bicarbonate (NaHCO3) on the performance of an anaerobic sequencing batch biofilm reactor treating vinasse at 55 and 35oC was evaluated.
Journal ArticleDOI
Hydrogen and methane production in extreme thermophilic conditions in two-stage (upflow anaerobic sludge bed) UASB reactor system
TL;DR: In this paper, two-stage hydrogen and methane production in extreme thermophilic (70°C) conditions was demonstrated for the first time in UASB-reactor system.
Journal ArticleDOI
Microbial succession within an anaerobic sequencing batch biofilm reactor (ASBBR) treating cane vinasse at 55ºC
TL;DR: Investigation of the anaerobic biomass formation capable of treating vinasse from the production of sugar cane alcohol as immobilized biomass on cubes of polyurethane foam at the temperature of 55oC found Methanosarcinalike microorganisms were the predominant archaeal population within the foam matrices at high organic loading ratios above 3.3 gCOD/L.
Journal ArticleDOI
Thermophilic anaerobic treatment of sulphur rich forest industry wastewater.
Jukka Rintala,Satu S. Lepistö +1 more
TL;DR: Thermophilic anaerobic treatment of sulphur-rich paper mill wastewater and bioassays suggested that both the inoculum and sludge from the UASB reactor used acetate mainly for methane production, while sulphide was produced from hydrogen or its precursors.
Integrating BES in the wastewater and sludge treatment line
Miriam A. Rosenbaum,Largus T. Angenent,Arvind Venkataraman,Jeffrey J. Fornero,Matthew T. Agler +4 more
TL;DR: Traditionally, wastewater treatment has been a combination of physical, biological, and chemical treatment methods, while chemical methods include phosphate removal, dye and endocrine disruptor removal, and disinfection systems.
References
More filters
Book
Perry's Chemical Engineers' Handbook
TL;DR: In this paper, conversion factors and mathematical symbols are used to describe conversion factors in physical and chemical data and Mathematical Symbols are used for converting, converting, and utilising conversion factors.
Book
Chemical Engineering Kinetics
TL;DR: In this paper, chemical engineering kinetics was studied in terms of kinetics in the context of Chemical Engineering kinetics and its application in the field of chemical engineering. But they did not discuss the application of the kinetics of protein kinetics.
Journal ArticleDOI
Kinetics of anaerobic treatment: A critical review
TL;DR: The fundamentals of microbial kinetics and continuous culture models are presented and the effect of temperature and inhibitors on the intrinsic kinetic rates is discussed, and Stoichiometric and bioenergetic considerations are reviewed.
Journal ArticleDOI
Characterization of an acetate-decarboxylating, non-hydrogen-oxidizing methane bacterium.
TL;DR: A methanogenic bacterium, commonly seen in digested sludge and referred to as the “fat rod” or Methanobacterium soehngenii, has been enriched to a monoculture and is characterized.
Journal ArticleDOI
Anaerobic thermophilic digestion of manure at different ammonia loads: Effect of temperature
TL;DR: In this paper, the effect of temperature in the range of 40-64°C on thermophilic anaerobic digestion of cattle manure with two different ammonia concentrations (2.5 and 6.0 g-N/l) was investigated in continuouslyfed lab-scale reactors: the higher ammonia concentration reduced the maximum tolerable temperature.