3 edition of Full scale studies on the thermophilic anaerobic digestion process found in the catalog.
Full scale studies on the thermophilic anaerobic digestion process
by Environmental Protection Service, Fisheries and Environment Canada in Ottawa
Written in English
|Statement||J. Smart and B.I. Boyko.|
|Series||Research program for the abatement of municipal pollution under provisions of the Canada-Ontario agreement on Great Lakes water quality : research report -- no. 59|
|Contributions||Boyko, B. I., joint author.|
|LC Classifications||TD475 .S63 1977|
|The Physical Object|
|Pagination||xi, 79 p. :|
|Number of Pages||79|
|LC Control Number||2008378622|
A unique autothermal thermophilic aerobic digestion (ATAD) process has been used to convert human excreta to liquid fertilizer in Japan. This study investigated the changes in physicochemical and bacterial community characteristics during the full-scale ATAD process operated for approximately 3 weeks in 2 different years. After initiating simultaneous aeration and mixing using an air-inducing. In a previous study examining mass balance for three full-scale reactors, the reduction in N resulting from anaerobic digestion was less than 10% (Schievano et al., ). In another study of a.
Amplicon sequencing methods targeting the 16S rRNA gene have been used extensively to investigate microbial community composition and dynamics in anaerobic digestion. These methods successfully characterize amplicons but do not distinguish micro-organisms that are actually responsible for the process. In this research, the archaeal and bacterial community of 48 full-scale anaerobic digestion. through aerobic digestion or anaerobic digestion. Thermophilic anaerobic digestion of primary and secondary wastewater sludges has been studied since , with full-scale studies beginning as early as Excellent reviews of thermophilic anaerobic digestion and thermophilic anaerobic wastewater treatment are available by.
The full-scale data were based upon samples collected from 30 full-scale digesters at 18 Danish WWTPs in year with 2 to 12 samples per digester. The numbers in the heatmap are average. In this study, a lab-scale thermophilic anaerobic digestion of food waste collected from G-district in Seoul was performed to assess its feasibility and applicability in field-scale biogas plants. Monitoring parameters included biogas production, methane composition, pH, .
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Publication date Publisher Ontario Ministry of the Environment. Full scale studies on the thermophilic anaerobic digestion process./ Ottawa, Ontario: Training and Technology Transfer Division (Water), Environmental Protection Service, Environment Canada,  © (CaOONL) (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type.
Study of the digestion process at a full-scale solid-state biogas plant by using ORWARE: Model modification and implementation As what is defined as thermophilic conditions, G.
GstraunthalerEffect of seasonal changes in quantities of biowaste on full scale anaerobic digester performance. Waste Manag., 29 (), pp.
PREVIOUS WORK Bench scale studies InRudolfs & Heukelekian () studied the batch digestion of primary municipal sludge at ther- mophilic temperatures. Using thermophilic digestion, the yield of gas per gram of volatile matter added was higher and a greater percentage of the volatile matter was by: The paper presents a review of the thermophilic anaerobic digestion process, which has been successfully employed in Los Angeles, U.S.A., and Moscow, U.S.S.R.
The chief advantages of operating at higher, thermophilic temperatures are lower detention times, improved dewaterability of the sludge, and increased destruction of pathogenic by: Ahring () showed that the optimal temperature for thermophilic digestion was found to be 60 °C.
However, for practical operation of full scale plants, a temperature between 52 and 56 °C will be preferable, allowing a slight variation in the temperature without fatal consequences for some of Cited by: Background: In recent years, various substrates have been tested to increase the sustainable production of biomethane.
The effect of these substrates on methanogenesis has been investigated mainly in small volume fermenters and were, for the most part, focused on studying the diversity of mesophilic microorganisms.
However, studies of thermophilic communities in large scale operating. Autothermal thermophilic aerobic digestion (ATAD) is an exothermic process where sludge is subjected to temperatures greater than 55 degrees C for at least 4 hours, over days.
The present study investigates (a) the differences between mesophilic and thermophilic anaerobic digestion of sludge and (b) the effect of the pre-treatment at 70 degrees C on mesophilic and. The effect of mixing on anaerobic digestion of manure was evaluated in lab-scale and pilot-scale experiments at 55 °C.
The effect of continuous (control), minimal (mixing for 10 min prior to extraction/feeding) and intermittent mixing (withholding mixing for 2 h prior to extraction/feeding) on methane production was investigated in three lab-scale continuously stirred tank reactors.
The process. Feedstock is fed into a digester where air is forced through the material to encourage the growth of aerobic microbes. The process is exothermic and the heat is maintained at thermophilic conditions of between oC.
The retention time of the process is usually between two and five days, as degradation is rapid. A mathematical model is developed to describe the dynamic behavior of mesophilic (35 ± 5 °C) and thermophilic digestion (55 ± 5 °C).
Special emphasis is given to acetotrophic methanogenesis and propionate degradation, as the steps that determine the stability of anaerobic digestion, as well as to hydrolysis rate, which determines the degradation efficiency of particulate.
digestion processes reduce the foaming potential of anaerobic digesters. This study was conducted in four phases to investigate the ability of thermophilic digestion and acid phase-thermophilic digestion to reduce foam.
Phase 1 examined favorable conditions for foam-causing organisms to try and promote foaming in the bench-scale anaerobic. -Anaerobic Digestion of Organic Wastes - 5 1 Introduction to anaerobic digestion History of anaerobic digestion Historical evidence indicates that the anaerobic digestion (AD) process is one of the oldest technologies.
However, the industrialization of AD began in with the first digestion. Anaerobic digestion (AD) will take place at any temperature above about 10 degrees C, but only very slowly.
Over the years research has established that there are two temperature ranges which are the most efficient for biogas production using the normal bacteria and other synergstic organisms which contribute, which are the most efficient for the process and for biogas production.
Autothermal thermophilic aerobic digestion (ATAD) is an exothermic process where sludge is subjected to temperatures greater than 55 °C for at least 4 hours, over 6–10 days. Organic solids are degraded and the heat released during the microbial degradation is used to bring the process temperature within the thermophilic range.
Anaerobic digestion (AD) has been used widely as a form of energy recovery by biogas production from the organic fraction of municipal solid wastes (OFMSW). The aim of this study was to evaluate the effect of the introduction of co-substrates (restaurant wastes, corn whole stillage, effluents from the cleaning of chocolate transportation tanks) on the thermophilic anaerobic digestion process.
Evaluation of thermophilic anaerobic digestion processes for full-scale Class A biosolids disinfection at Hyperion Treatment Plant Article in Biotechnology and Bioengineering 97(1) May.
Anaerobic Digestion, Thermophilic, Vector Attraction Reduction, and Pathogen Inactivation. DEVELOPMENT OF THERMOPHILIC ANAEROBIC DIGESTION Thermophilic anaerobic digestion of municipal wastewater sludge has been investigated from the s onward, initial work being completed at laboratory scale. However, full-scale work began by the s and.
biosolids. Recent bench-scale studies have confirmed these observations (e.g., Watanabe et al., ). A wide array of two phase digestion processes, which combine anaerobic digestion of wastewater sludge and thermal treatment, have been tested and implemented at full-scale.
Recommendations Based on review of the anaerobic sludge digestion options and how they could be adapted to the existing facilities, the study recommends that the thermophilic anaerobic digestion process be implemented on a full-scale basis at the District of Columbia Blue Plains plant.
Evaluating digestion efficiency in full-scale anaerobic digesters by identifying active microbial populations through the lens of microbial activity. Sci. Rep. 6. infection by thermophilic anaerobic digestion is also available from bench- and pilot-scale studies (Ghosh, ; Huyard et al, ; Watanabe et al, ).
The City of Los Angeles has land-applied its biosolids in Kern County, California, since In response to a county ordinance banning the land application of Class B biosolids on.