摘要
以高浓度有机废水为发酵底物,接种颗粒污泥进行厌氧发酵制氢,研究不同的微波预处理时间对颗粒污泥发酵产氢的影响。结果表明:最佳的微波预处理时间为6 min,此时的比产氢速率高达8.03 mmolH2/(gCOD.d);随着预处理时间的增加,对COD的去除率逐步提高,但也不宜过长,否则将会杀灭产酸菌芽孢,导致去除率降低;系统启动完成后,出水pH值稳定在4.5左右,对COD的去除率约为40%,颗粒污泥的VSS/SS值为83.0%,沉降速率为23.5 m/h。
Taking high concentrated organic wastewater as fermentative substrates, the inoculated granular sludge was used for fermentative bio-hydrogen production, and the influence of microwave pretreatment time on the fermentative bio-hydrogen production was investigated. The results show that the optimal time of microwave pretreatment is 6 min, and the specific hydrogen production rate is the highest, attaining 8.03 mmolH2/（ gCOD· d）. As the pretreatment time increases, the COD removal rate is gradually improved. But the pretreatment time should not be too long, otherwise it would kill spores of acid-producing bacteria to result in lower COD removal. At the end of start-up, pH value of the sample is stable at about 4.5, the COD removal rate is approximately 40%, VSS/SS of granular sludge is 83.0%, and the sedimentation rate is 23.5 m/h.
出处
《中国给水排水》
CAS
CSCD
北大核心
2010年第23期13-16,共4页
China Water & Wastewater
关键词
厌氧颗粒污泥
发酵产氢
微波预处理
anaerobic granular sludge
fermentative bio-hydrogen production
microwave pretreatment
