Institute of Biology for Engineers and Biotechnology of Wastewater, Am Fasanengarten, Karlsruhe Institute of Technology, 76133 Karlsruhe, Germany.
J Environ Manage. 2013 Oct 15;128:522-9. doi: 10.1016/j.jenvman.2013.06.004. Epub 2013 Jul 3.
High strength automobile industry wastewater, collected from decanters (DECA) of the pre-treatment plant after oil, grease and sludge separation, was investigated for production of methane in the absence and presence of glucose or excess aerobic sludge (AS) from a lab scale suspension reactor as co-substrates. The highest methane production from DECA wastewater was 335.4 L CH4/kg CODsoluble removal which decreased in the presence of the co-substrates to 232.5 (with 2 g/L glucose) and to 179 (with 40% AS) L CH4/kg CODsoluble removal, respectively. Around 95% of total methane was produced within 5 days of incubation of DECA at 37 °C when no co-substrate was added. Addition of co-substrates did not improve biodegradation of DECA but overall methane production from DECA + co-substrates was increased due to co-substrate biodegradation. The anaerobic inoculum, capable of producing 2.4 mol of hydrogen/mol of glucose under zinc induced inhibitory conditions, was unable to produce hydrogen from DECA as substrate under the same conditions.
研究了从预处理厂的离心机 (DECA) 中收集的高强度汽车工业废水，该废水经过油水分离和污泥分离后，在没有和存在葡萄糖或过量实验室规模悬浮反应器中好氧污泥 (AS) 作为共底物的情况下，用于生产甲烷。从 DECA 废水中获得的最高甲烷产量为 335.4 L CH4/kg 可溶性 COD 去除，当存在共底物时，甲烷产量分别降至 232.5（2 g/L 葡萄糖）和 179 L CH4/kg 可溶性 COD 去除。在 37°C 下孵育 DECA 时，在不添加共底物的情况下，约 95%的总甲烷在 5 天内产生。添加共底物并没有改善 DECA 的生物降解，但由于共底物的生物降解，从 DECA + 共底物中产生的总体甲烷产量增加。在锌诱导抑制条件下能够产生 2.4 摩尔氢气/摩尔葡萄糖的厌氧接种物，在相同条件下不能将 DECA 作为底物产生氢气。
