Solid Waste Biological Treatment
Kind of solid waste are food waste, electronic waste, garden (yard) and park waste and sludge from domestic waste. Biological treatment of solid waste include of reduce volume of the waste material, stabilize of waste condition, destruction of pathogen in waste material, and production of biogas for energy use. This waste then can change into other product that useful for other purpose like for fertilizer and soil amendment, or be disposed in SWDS.
The process that involved in waste treatment are anaerobic usually linked with (CH4) recovery and combustion for energy. Composting is an aerobic process and a large fraction of the degradable organic carbon (DOC) in the waste material is converted into carbon dioxide (CO2). Methane is formed in anaerobic section of the compost, but it is oxidized to a large extent in the aerobic section of the compost. The estimated CH4 released into the atmosphere ranges from less than 1 percent to a few per cent of the initial carbon content in the material.
The other kind of gases also can produced like emission gas of N2O, this gases can be varied from about 0.5 to 5 percent depend on the kind of waste proceed. Anaerobic digestion of organic waste expedites the natural decomposition of organic material without oxygen by maintaining the temperature, moisture content and pH close to their optimum values. Generated CH4 can be used to produce heat and/or electricity, wherefore reporting of emissions from the process is usually done in the Energy sector. The CO2 emissions are of biogenic origin, and should be reported only as an information item in the Energy Sector. Emission of CH4 from such facilities due to unintentional leakages during process disturbances or other unexpected events will generally be between 0 and 10 percent of the amount of CH4 generated. In the absence of further information, use 5 percent as a default value for the CH4 emissions are likely to be close to zero. N2O emissions from the process are assumed to be negligible, however, the data on these emissions are very scarce.
The process that involved in waste treatment are anaerobic usually linked with (CH4) recovery and combustion for energy. Composting is an aerobic process and a large fraction of the degradable organic carbon (DOC) in the waste material is converted into carbon dioxide (CO2). Methane is formed in anaerobic section of the compost, but it is oxidized to a large extent in the aerobic section of the compost. The estimated CH4 released into the atmosphere ranges from less than 1 percent to a few per cent of the initial carbon content in the material.
The other kind of gases also can produced like emission gas of N2O, this gases can be varied from about 0.5 to 5 percent depend on the kind of waste proceed. Anaerobic digestion of organic waste expedites the natural decomposition of organic material without oxygen by maintaining the temperature, moisture content and pH close to their optimum values. Generated CH4 can be used to produce heat and/or electricity, wherefore reporting of emissions from the process is usually done in the Energy sector. The CO2 emissions are of biogenic origin, and should be reported only as an information item in the Energy Sector. Emission of CH4 from such facilities due to unintentional leakages during process disturbances or other unexpected events will generally be between 0 and 10 percent of the amount of CH4 generated. In the absence of further information, use 5 percent as a default value for the CH4 emissions are likely to be close to zero. N2O emissions from the process are assumed to be negligible, however, the data on these emissions are very scarce.
Labels: Waste Treatment
posted by Margi @ 8:42 PM
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