Lin Chitsan
Department of Marine Environmental Engineering, National Kaohsiung Marine University, 142 Haijhuan Road, Nan-Tzu District, Kaohsiung 81157, Taiwan, ROC.
Bioresour Technol. 2008 Nov;99(16):7651-6. doi: 10.1016/j.biortech.2008.01.078. Epub 2008 Mar 18.
A pilot-scale active aeration reactor was studied for composting food wastes in an open-top container aerated with negative pressure by vacuum. A biological filter bed was used to remove NH(3) from the emission. In addition to monitoring system parameters, the compost stability and fertilizer content were also examined to ensure product quality. The compost temperature rose to above 65 degrees C the first day and maintained at the high temperature fermentation level for 30 days. The pH decreased from the initial 5.2 to 4.3 on the first day and then rose slowly to 7.4 on the 60th day. After 60 days, the C/N ratio dropped from 32 to below 20. The final compost contains 1.6% nitrogen, 0.6% phosphate, and 1.4% potassium with total coliforms below 3 MPN/100mL. Using the biological filter to remove NH3, the emission contains less than 1 ppm of NH3. This system proves to be effective and environmental friendly.
对一个中试规模的主动曝气反应器进行了研究，该反应器用于在顶部开口的容器中通过真空负压曝气对食品废弃物进行堆肥处理。使用生物滤床去除排放物中的NH₃。除了监测系统参数外，还对堆肥稳定性和肥料含量进行了检测，以确保产品质量。堆肥温度在第一天升至65℃以上，并在高温发酵水平维持30天。pH值从最初的5.2在第一天降至4.3，然后在第60天缓慢升至7.4。60天后，碳氮比从32降至20以下。最终堆肥含有1.6%的氮、0.6%的磷酸盐和1.4%的钾，总大肠菌群低于3 MPN/100mL。使用生物滤床去除NH₃后，排放物中的NH₃含量低于1 ppm。该系统被证明是有效且环保的。
