Performance of up-flow anaerobic fixed bed reactor of the treatment of sugar beet pulp lixiviation in a thermophilic range

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• 作者：Roc铆o Monta帽茅s Alonso ; Montserrat P茅rez Garc铆a ; Rosario Solera del R铆o
• 关键词：Anaerobic digestion ; Upflow anaerobic fixed bed reactor (AUF) ; Methane yield ; Sugar beet pulp ; Population dynamic
• 刊名：Bioresource Technology
• 出版年：February, 2014
• 年：2014
• 卷：154
• 期：Complete
• 页码：305-312
• 全文大小：776 K

文摘

The acclimatization and performance study of lixiviation of sugar beet pulp are carried out in upflow anaerobic fixed bed reactor in thermophilic range of temperature (55 掳C). Several hydraulic retention time is conducted (11, 8, 6, 4, 2, and 1.5 days). The performance study showed that Chemical Oxygen Demand removal efficiency is 90% for 6 days-HRT. While COD removal efficiency was reduced within the range of 74.3% and 59.4% in others HRT. Organic loading rates greater than 10 kg COD/m³ d in influent, (2 days-HRT), produces a destabilization of the process due to total acidity accumulation in reactors although is the HRT with highest methane production.

The results showed that an increase in OLR was directly correlated with active biomass inside reactor but not with the amount in microbial community. The bacterial concentration inside the reactor is strongly influenced by the content of microorganisms in the lixiviation of sugar beet pulp.