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8545931 
Journal Article 
污泥与葡萄糖不同配比联合厌氧消化对污泥中多环芳烃去除效能及细菌群落的影响 
Tang, T; Li, J; Luo, S; Li, Y; Wang, Y; Yang, Z; Xiang, F 
2020 
Huanjing Gongcheng Xuebao / Chinese Journal of Environmental Engineering
ISSN: 1673-9108 
Science Press 
14 
2 
543-552 
Chinese 
In order to analyze the effects of the different ratio of sludge to glucose combined with anaerobic co-digestion on the removal efficiency of polycyclic aromatic hydrocarbons (PAHs) and bacterial communities in sludge, at medium temperature (35±1)℃, the effects of different organic matter contents (as volatile solids (VS) mass ratio) for sludge and glucose of 1:0.1, 1:0.3 and 1:0.5 on the removal efficiency of PAHs and bacterial community were compared with anaerobic digestion of sludge without added glucose (CK). The results showed that the increase of glucose amount did not further improve the degradation ability of PAHs. Among them, P1 experimental group (VSsludge:VSglucose=1:0.1) had the strongest removal ability of ∑PAHs in digested sludge, and degrading rate could reach (60.56±8.10)%. And the removal efficiency of high molecular weight PAHs (≥4 ring) was significantly higher than that of the low molecular weight PAHs (2~3 rings) (P<0.05). All the average degradation rates of benzo(a)pyrene, anthracene, benzo(b)fluoranthene and benzo(k)fluoranthene were higher than 62%, while the degradation rate of benzo(a)pyrene reached (59.60±14.05)%. In addition, 16S rRNA technology was used to detect the bacterial community in the digested sludge. It was found that the addition of glucose to the sludge could enhance PAHs removal in the sludge by promoting the growth ofActinobacteria, Bacteroidetes_vadin HA17, Spirochaetes, Planctomycetes and norank_f_Anaerolineaceae. © 2020, Science Press. All right reserved. 
Anaerobic co-digestion; Bacterial community; Different ratio; PAHs; Sludge