针对城市污泥厌氧消化效率较低的问题,考察了单独加铁、加铁与活性炭及铁与生物炭对水解液厌氧消化的强化作用。结果表明,加铁及铁炭联合投加均能促进水解液厌氧消化效能,铁与生物炭在投加质量比为2∶1时促进效果最显著,挥发性脂肪酸中乙酸占比较对照组提高了13.45%,累计甲烷产量较对照组提高了32.86%。铁炭联合投加有利于污泥水解液的厌氧消化。

In view of low anaerobic digestion efficiency for municipal sludge,the enhancing effect of adding iron alone,adding iron and activated carbon together,and adding iron and biochar together on anaerobic digestion of sludge thermos-alkali hydrolysate liquid is studied respectively.The results show that both the addition of iron alone and the combined addition of iron and carbon can promote the anaerobic digestion efficiency of hydrolysate liquid.The enhancing effect reaches the most significant when the addition ratio of iron to biochar is 2∶1.The proportion of acetic acid in volatile fatty acids products under the 2∶1 addition ratio of iron to biochar is 13.45% higher than that for the control group,and the cumulative methane production is 32.86% higher.The combined addition of iron and carbon is beneficial to anaerobic digestion of sludge hydrolysate liquid.

刘令语(1996-),女,硕士研究生,研究方向为污水处理与回用技术,2540853268@qq.com