Zhang Ji-shi, Sun Ke-wei, Wu Man-chang, Zhang Lei
National Engineering Research Center of Solid Waste Resource Recovery, Kunming, China.
J Environ Sci (China). 2006;18(4):810-5.
The influence of temperature on the performance of anaerobic reactors for treating the organic fraction of municipal solid waste (OFMSW) was studied. Batch digestion of OFMSW was carried out for 32 d at different temperature (25 degrees C, 35 degrees C, 45 degrees C and 55 degrees C) conditions for total solid concentrations (TS) 17% with the ratio of total organic carbon to nitrogen (C/N) being, 25:1 respectively, while keeping other parameters constant such as inoculum, start-up pH, reactor volume (2 L) and so on. Temperature can influence the methanogenic bacteria activity, accordingly inhibiting the OFMSW biodegradation and stabilization efficiency. Anaerobic reactors excelled at TS reduction, total volatile solid reduction, chemical oxygen demand reduction, increasing cumulative biogas production, whose rate was at temperature (35 degrees C and 55 degrees C) conditions. Methane concentration in the biogas was above 65% in four reactors. In addition, the fluctuation of temperatures resulted in the biogas production variation. The data obtained indicated that temperature had a significant influence on anaerobic process.
研究了温度对处理城市固体废弃物有机组分（OFMSW）厌氧反应器性能的影响。在总固体浓度（TS）为17%、总有机碳与氮的比例（C/N）分别为25:1的条件下，于不同温度（25℃、35℃、45℃和55℃）对OFMSW进行了32天的批次消化实验，同时保持接种物、起始pH值、反应器体积（2L）等其他参数不变。温度会影响产甲烷菌的活性，从而抑制OFMSW的生物降解和稳定化效率。厌氧反应器在TS降低、总挥发性固体减少、化学需氧量降低、累积沼气产量增加方面表现出色，其产气速率处于温度为35℃和55℃的条件下。四个反应器中沼气中的甲烷浓度均高于65%。此外，温度波动导致了沼气产量的变化。所获得的数据表明温度对厌氧过程有显著影响。
