Title: Experimental Study on Aerobic Composting of Sewage Sludge Using Different Addictives
Abstract: Aerobic composting experiments of sewage sludge were performed using saw dust,bulrush and matured sludge as different addictives.The results showed that matured sludge can make temperature of the material rise to the peak value rapidly in just 1day,and the sludge was stabilized at most 10 days.The products were disinfected for temperature of the material above 55℃ was kept for at least 4 days(can kill nearly all the pathogens).Using matured sludge as addictives can not only accelerate startup of fermentation and shorten reaction time,but also simplify composting process and save the operation cost.The composting product using matured as addictives contains plenty of organic matter(346g/kg),nitrogen(22.0gN/kg),phosphor(11.1g P2O5/kg) and potassium(12.9gK2O/kg),which was acceptable for plant food and medium for organic fertilizer.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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