氮源对蔬菜废弃物发酵制氢的影响

EFFECTS OF NITROGEN ADDITIVE AMOUNT ON ANAEROBIC HYDROGEN WITH VEGETABLESS GARBAGE

以厌氧活性污泥为产氢菌种,研究了氮源对蔬菜废弃物厌氧生物制氢的pH值、产气能力、产氢能力以及气体成分的影响。结果表明添加适量的氮源能有效增加产氢量,延长产氢周期;氮源添加量在0%～0.1%范围内,对蔬菜废弃物产氢能力具有促进作用,超过0.1%,则有明显的抑制作用,蔬菜废弃物产氢的最佳氮源添加量为0.1%。

To reduce the cost of vegetable waste treatment, the anaerobic activated sludge was used as the anaero- bic hydrogen-producing bacteria to study the effects of the nitrogen additive amount on pH, gas production rate, hy- drogen production capacity and gas composition. The results show that adding a good amount of nitrogen can effec- tively increase the organic production load and extend the hydrogen production cycle for the anaerobic hydrogen pro- duction system; Nitrogen source played the promoting role when the amount is in the range 0%-0.1%, otherwise nitrogen source behave the obvious inhibition on anaerobic hydrogen production when the amount got out of range. This is easy to see that the best nitrogen additive amount for anaerobic hydrogen production on vegetable waste treat- ment by the anaerobic activated sludge is 0. 1%.