PDF Publication Title:
Text from PDF Page: 044
SRT/HRT ratio of 3 to 4. (Observation of phosphorus retention indicated that the systems were not very effective in retaining biomass.) The systems were operated at a three-day HRT. The volatile solids feed concentration varied between 0.6 and 1.2 percent volatile solids. The loadings ranged from 2 to 4 kg / m3 / d. The volatile solids conversions to gas ranged from 30 to 41 percent. Umetsu reported on the performance of a horizontally baffled anaerobic digester treating dairy manure at ambient temperatures (Umetsu and Takahata 1997). The average HRT was ten days. The methane content of the biogas was 58 percent. The digester achieved a 25 percent volatile solids reduction at a volatile solids loading of 7.3 kg / m3 / d. Wuhou reported on the anaerobic digestion of dairy manure from a 2900 cow dairy (Wuhou, Wenying et al. 1997). The digester was a mesophilic up flow mixing reactor operated at a volatile solids loading of 3.7 kg per cubic meter per day. The digester achieved a 78.2 percent volatile solids conversion to gas. Burke operated a mesophilic AGF contact reactor at an average loading of 2.13 kg per cubic meter per day. The average COD conversion to gas was 66.3 percent. The maximum COD conversion to gas was 69 % at a loading of 2.4 kg per cubic meter per day. The minimum conversion was 59.2 percent during the startup period. The biogas had a methane concentration between 60 and 65 percent. A summary of the expected performance for each type of anaerobic reactor is presented in the table below. Table 4 Expected Percentage VS Conversion to Gas Process Load Entire Waste Stream Completely mixed mesophilic High Completely mixed thermophilic High Contact High Partial Waste Stream Plug mesophilic High Fixed film High Lagoon Low Conversion to Gas 35 to 45 % 45 to 55 % 50 to 65 % 35 to 45 % 55 to 65 % 35 to 45 % Table 5 presents a summary of the attributes of the anaerobic processes that can be used to convert all or a fraction of dairy manure to gas. © Environmental Energy Company 41 www.makingenergy.com 360-923-2000PDF Image | Dairy Waste Anaerobic Digestion Handbook Options for Recovering Beneficial Products From Dairy Manure
PDF Search Title:
Dairy Waste Anaerobic Digestion Handbook Options for Recovering Beneficial Products From Dairy ManureOriginal File Name Searched:
biogas11.pdfDIY PDF Search: Google It | Yahoo | Bing
Capstone Turbine and Microturbine: Capstone microturbines used and new surplus for sale listing More Info
Consulting and Strategy Services: Need help with Capstone Turbine, sizing systems, applications, or renewable energy strategy, we are here to assist More Info
Container Lumber Dry Kiln: Since 1991 developing and innovating dry kilns using standard shipping containers More Info
Supercritical CO2 Lumber Dry Kiln: Compact fast drying in 3 days or less for small amounts of wood and lumber drying More Info
BitCoin Mining: Bitcoin Mining and Cryptocurrency... More Info
Publications: Capstone Turbine publications for microturbine and distributed energy More Info
FileMaker Software for Renewable Energy Developing database software for the renewable energy industry More Info
CO2 Gas to Liquids On-Demand Production Cart Developing a supercritical CO2 to alcohol on-demand production system (via Nafion reverse fuel cell) More Info
Stranded Gas for low cost power Bitcoin Mining Using stranded gas for generators may provide breakthrough low power costs for cryptocurrency miners. More Info
| CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com | RSS | AMP |