摘要
实验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,研究不同磷酸盐浓度条件下的产氢效果。结果表明:当磷酸盐的浓度为6 mmol.L-1～8 mmol.L-1时,对有机废水制氢具有促进作用,在浓度为8mmol.L-1时,氢气含量为56.3%达到最大。随着磷酸盐浓度的增加,化学需氧量(COD)去除率和出水挥发性脂肪酸(VFA)浓度也逐步提高,但当磷酸盐浓度升至10 mmol.L-1时,由于进水营养比例失衡,产氢产乙酸菌群的活性受到抑制,产气率也因此减少。
The experiments were carried out to study the fermentative bio-hydrogen production by gramdar sludge under conditions of different phosphate concentrations with high concentrated organic wastewater as fermentation substrate. The re- sults showed that, the phosphate under concentration of 6 mmol·L^-1 ~ 8 mmol·L^-1 had a catalytic effect on hydrogen production. The maximum hydrogen content of 56.3% was appeared at phosphate concentration of 8 mmol·L^-1. The phosphate concentration, COD removal rate and effluent VFA concentrations gradually increased with the increase of phos- phate concentration. But hydrogen production decreased when the phosphate concentration reached to 10 mmol·L^-1 , clue to the imbalance of nutrition and the activity of hydrogen - producing acetic bacteria was inhibited.
出处
《中国沼气》
北大核心
2012年第4期7-10,共4页
China Biogas
基金
国家大学生创新性实验计划(101056134)
广东省大学生创新实验项目(S1010561112)
关键词
磷酸盐
厌氧发酵
颗粒污泥
发酵产氢
phosphate
anaerobic fermentation
granular sludge
fermentative hydrogen production
