PDF Publication Title:
Text from PDF Page: 025
Anaerobic Digestion of farm and food processing residues GoodPractice Guidelines Page24 Storage facilities will be needed for the processed fibre. The market is seasonal, so storage could be needed for up to six months output. Stored fibre will continue to compost aerobically, so it will need to be carefully managed and controlled, using methods such as stabilising through further composting. Fibre needs to be stored under cover to prevent rainwater getting in. Flies may also be a problem around stored fibre, so siting the storage facilities will need to take that into account. Liquor The liquid from the AD process has a low level but diverse range of nutrients. It can be used as a liquid fertiliser in a planned fertiliser regime. As it has a high water content, the liquor also has irrigation benefits, so it can be used for ‘fertigation’ on agricultural land. However, as it contains particles, it should not be used for fertigation in greenhouses because it can block feeder pipes if not separated effectively. The liquor is generally used on the farms on which it was produced. A potentially wider market has yet to be fully developed, although some AD schemes have successfully bottled and sold the liquor as a liquid fertiliser. Spreading and application methods for the liquor depend on the type of crop being grown. As with any fertiliser containing nitrogen, the liquor should only be used on actively growing crops, in certain locations and on certain types of soil. Liquor from the AD process should be used or disposed of in a way which prevents excess run-off to underground or surface waters. Production of a Farm Waste Management Plan will assess and devise pollution prevention measures, in accordance with MAFF Codes of Good Agricultural Practice for the Protection of Water and Soil. TABLE 3. The liquor should be applied as part of an integrated fertiliser programme to ensure that the optimum nutrient requirements for the crop are supplied. It is good practice for the farmer or operator to regularly analyse the soil, and the AD liquor, to assess the appropriate application rate, and to quantify the amount of chemical fertiliser to be applied to crops and grassland. Over application causes vegetation scorching. Liquor can be stored on the farm, or at the CAD plant. Once cooled, it can be stored in lagoons or large tanks. If possible, these should be located adjacent to the areas where the liquid will be applied. These containers will need to be constructed to meet HSE and planning regulations. Some liquid storage facilities may need bunding around storage silos; bunding will certainly be required on CAD sites. While it is still warm, the liquor will continue to produce small amounts of methane. Once stored, the sediment in the liquor will settle, so it will need to be stirred or agitated to ensure uniformity throughout before application or transporting. If bulk transport is needed from CAD plants, it is possible to use the same tankers which have delivered feedstock to export the liquor, although they would need to be thoroughly cleaned in between to avoid cross- contamination (this would have energy implications, and care would need to be taken over the disposal of any wash water). As the liquor is pumpable, where appropriate it should be pumped away from the process plant to long term storage sites. Liquor (gms/100 litres) Fibre (% of dry matter) Nitrogen 800 3 Phosphate 500 4 Potash 500 2 NUTRIENT ANALYSIS OF THE FIBRE AND LIQUOR FROM THE AD OF FARM SLURRY/MANURE NOTES: 1 FIGURES ARE NOT FOR ELEMENTAL MASS BUT MASS OF COMPOUNDS OF NITROGEN, PHOSPHATE AND POTASH. 2 THE FIBRE AND LIQUOR ALSO CONTAIN TRACE ELEMENTS INCLUDING MAGNESIUM, MANGANESE, SULPHUR, CALCIUM, ZINC, COPPER, BORON AND SODIUM. THERE IS CONSIDERABLE SCOPE FOR INCREASING NITROGEN LEVELS IN FINAL LIQUOR OR CHANGING THE BALANCE OF FINAL EFFLUENT NITROGEN, PHOSPHATE AND POTASH RATIONS BY MANIPULATING FEEDSTOCK SOURCES IN LARGER DIGESTERSPDF Image | Anaerobic Digestion Of farm and food Processing residues The development of a sustainable industry
PDF Search Title:
Anaerobic Digestion Of farm and food Processing residues The development of a sustainable industryOriginal File Name Searched:
biogas10.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 (Standard Web Page)