F/M对ASBR中基质的吸收、储存和利用影响  

Effects of F/M on the Uptake,Storage and Utilization of Carbonhydrate in ASBR

作　　者：彭党聪[1] 丁青肖[1] 邵享文[1] 薛旭东[1] 

机构地区：[1]西安建筑科技大学西北水资源与环境生态教育部重点实验室,西安710055

出　　处：《环境科学》2009年第2期427-431,共5页Environmental Science

基　　金：国家自然科学基金项目(50478047)

摘　　要：研究了不同F/M(COD/VSS)下以葡萄糖为基质时厌氧序批式反应器(ASBR)中的微生物代谢规律.结果表明,在序批操作条件下,水解产酸菌对葡萄糖的代谢存在2条并列的途径,即直接代谢为VFA和首先转化为胞内储存物糖原,然后糖原再被转化为VFA.前者约占进水COD的34%～38%,而后者则高达41%～46%.F/M越高,糖原的储存量越大,当F/M分别为0.27、0.20和0.14时,单位质量污泥糖原的最大储存量分别为116.8、81.1和62.4mg/g.糖原的储存减缓了VFA的积累,为ASBR反应器的高效和正常运行创造了条件.Substrate utilization in a glucose-fed anaerobic sequencing batch reactor （ASBR） under different F/M ratios was investigated. Glucose added was quickly taken up by fermentation bacterial in anaerobic digestion, then partly degraded directly to volatile fatty acid （VFA, accounted for 34%-38% of COD-fed） and partly accumulated transiently in the cell as glycogen （accounted for 41%-46% of COD-fed） and degraded to VFA in the following. The bacterial accumulation capacities increased with F/M. The maximum specific storage capacities could reach as high as 116.8, 81.1 and 62.4 mg/g as F/M （COD/VSS） was controlled in 0.27, 0.20 and 0.14 respectively. VFA production rate slowed down due to glucose storage, which resulted in low VFA accumulation and guaranteed a stable operation in ASBR under high loading rate.

关 键 词：厌氧序批式反应器 葡萄糖 污泥负荷 糖原 吸收 储存 

分 类 号：X703.1[环境科学与工程—环境工程]