【摘要】 分析了淀粉、纤维素和聚乙烯醇(PVA)这三种慢速可生物降解COD基质在高温(55℃)厌氧升流式污泥床中的降解过程机理。淀粉能够完全转化为挥发性有机酸、微生物污泥、生物气;纤维素颗粒的去除仅是被污泥床截留,而几乎不发生生化反应。少量的PVA基质在厌氧条件下能够被转化成有机酸。更多还原

【Abstract】 The biodegradation processes of starch, cellulose and polyvinyl alcohol (PVA) which are common substrates of the slowly biodegradable COD (SBCOD) in agro-industrial wastewater was investigated in an thermophilic upflow anaerobic sludge blanket (TUASB) reactor(55 ℃). All starch in the influent can be converted to short chain fatty acids , biomass and biogas in the TUASB reactor. The removal of cellulose particles was based on a physical not biological mechanism. Only a little PVA can be converted to volatile fatty acids in the TUASB.更多还原