期刊论文

中文

应用化工

1671-3206

2022

51

6

1592-1597

10.3969/j.issn.1671-3206.2022.06.011

国家十三五重点研发计划项目(2019YFB1503805)。

本校为第一机构

杨木燃料乙醇蒸馏废水按照COD/SO_4~(2-) = 20的量,添加Fe_2 (SO_4)_3、FeSO_4、Na_2 SO_4,厌氧消化周期为18 d。探究硫酸盐类型对废水中温厌氧消化的影响。结果表明,添加Fe_2 (SO_4)_3的产甲烷量最高为543.0 mL/g VS,比添加FeSO_4和Na_2 SO_4分别提高了29.72%和35.82%。添加Fe_2 (SO_4)_3的挥发性脂肪酸含量最高,Fe~(3+)可以富集异化铁还原菌,从而提高乙酸含量,为产甲烷菌提供更多基质。硫元素平衡分析结果,Fe_2 (SO_4)_3-PFEW厌氧发酵结束后,沼液中硫化物含量最低,说明铁源的添加促进了体系中的硫化物与金属元素结合,进而固定。因此,Fe_2 (SO_4)_3的添加能够提高厌氧消化性能,同时降低硫化物的...

The mesophilic anaerobic digestion of poplar fuel ethanol distillation wastewater is 18 d after adding Fe2(SO4)3,FeSO4,Na2SO4according to the amount of COD/SO42-=20.The effects of types of sulfates on the mesophilic anaerobic digestion of PFEW was investigated.The results showed that the maximum methane production was 543.0 mL/gVS in the reactor with Fe2(SO4)3,which was 29.72%and 35.82%higher than that of FeSO4and Na2SO4,respectively.The VFAs content was the highest with Fe2(SO4)3,indicating that Fe3+can enrich dissimilation iron-reducing bacteria which can increase the acetic acid content and...