The experiments were carried out to study the fermentative bio-hydrogen production by granular sludge under conditions of different phosphate concentrations with high concentrated organic wastewater as fermentation substrate. The results 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 phosphate concentration. But hydrogen production decreased when the phosphate concentration reached to 10 mmol · L-1, due to the imbalance of nutrition and the activity of hydrogen - producing acetic bacteria was inhibited.%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6mmol·L-1～8mmol·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.
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