环境工程学报2017，Vol.11Issue(8)：4757-4765,9.DOI:10.12030/j.cjee.201606144
浮萍与剩余污泥厌氧消化产沼气实验
Anaerobic digestion experiments about duckweed and excess sludge to produce biogas
摘要
Abstract
In order to improve the anaerobic digestion capacity to produce biogas from duckweed, the use of single and mixed substrates of duckweed and excess sludge, were compared for use in the anaerobic digestion process.The results showed the acidification phase of methane-producing process could be shortened, and that the actual values of cumulative gas production was 11％ higher than the calculated value when the two substrates were mixed.In addition, the influence of substrate pretreatment and the ratio of substrates and inoculum for the anaerobic process were researched.The results showed that the methane yield from duckweed with hot alkali pretreatment was 8％ higher than from the untreated group, and that the anaerobic digestion period needed to produce biogas could be cut down at once.Meanwhile, when the ratio of substrates and inoculum was 1 ∶ 1, the pH of the whole reaction process was ＞ 6.00, and the volatile fatty acids (VFAs) level was the highest, which contributed to the methane production.The maximum total biogas and total methane yield was (3309 and 1883) mL, respectively.These were (151 mL and 304 mL) more than those of the worst group (1 ∶ 2.5), with 151 and 304 mL.关键词
浮萍/厌氧消化/甲烷产量/剩余污泥/热碱预处理Key words
duckweed/anaerobic digestion/methane production/excess sludge/hot alkali pretreatment分类
资源环境引用本文复制引用
姜楠,任洪艳,阮文权,廖家林..浮萍与剩余污泥厌氧消化产沼气实验[J].环境工程学报,2017,11(8):4757-4765,9.基金项目
酒精废液燃气化产业技术研发及应用模式示范项目(2014BAC25B01) （2014BAC25B01）
中央高校基本科研业务费专项(JUSRP51512) （JUSRP51512）
