Escola de Engenharia Mauá-Instituto Mauá de Tecnologia (EEM/IMT), Praça Mauá 1, CEP 09.580-900, São Caetano do Sul, São Paulo, Brazil.
Appl Biochem Biotechnol. 2010 Dec;162(8):2365-80. doi: 10.1007/s12010-010-9009-x. Epub 2010 Jun 18.
The effect of organic matter and fill time on anaerobic sequencing batch reactor (5 L, 30 °C, 8-h cycles, 50 rpm) efficiency has been analyzed. Organic matter was increased by the influent concentration. Fill times investigated were in the batch mode and fed-batch followed by batch. In the batch mode organic matter removal were 93%, 81%, and 66% for influent concentration of 500, 1,000, and 2,000 mgCOD/L (0.6, 1.29, and 2.44 g COD/L.d), respectively. At 3,000 mgCOD/L (3.82 gCOD/L x d) operational stability could not be achieved. Removal efficiency was improved by increasing the fill time, and was 85% for the 1,000 mgCOD/L condition and fill times of 2 and 4 h, and 80 and 77% for the 2,000 mgCOD/L condition and fill times of 2 and 4 h, respectively. Hence, gradual feeding seemed to improve and to smooth the profiles of organic matter and volatile acids along the cycle with 78 to 96 NmLCH₄/gCOD.
已分析有机物和填充时间对厌氧序批式反应器（5 L、30°C、8 h 周期、50 rpm）效率的影响。通过进水浓度增加有机物。考察的填充时间为批次模式和补料分批后批次模式。在批次模式下，当进水浓度分别为 500、1000 和 2000 mgCOD/L（0.6、1.29 和 2.44 g COD/L·d）时，有机物去除率分别为 93%、81%和 66%。在 3000 mgCOD/L（3.82 gCOD/L·d）时，无法实现操作稳定性。通过增加填充时间可以提高去除效率，在 1000 mgCOD/L 条件下，填充时间为 2 和 4 h 时，去除效率分别为 85%和 80%，在 2000 mgCOD/L 条件下，填充时间为 2 和 4 h 时，去除效率分别为 85%和 77%。因此，逐渐进料似乎可以改善和使有机物和挥发性脂肪酸的曲线在整个周期内更加平稳，产甲烷量为 78 至 96 NmLCH₄/gCOD。
