Effects of Mixing Ratio on Dewaterability of Digestate of Mesophilic Anaerobic Co-Digestion of Food Waste and Sludge

被引：10
|
作者：
Wang, Tianfeng [1 ,2 ,3 ]
Yang, Pupu [1 ]
Zhang, Xinyun [4 ]
Zhou, Qi [5 ]
Yang, Qiyong [1 ]
Xu, Bingjie [1 ]
Yang, Pinghua [1 ]
Zhou, Tumu [1 ]
机构：
[1] Jiujiang Univ, Sch Chem & Environm Engn, Jiujiang 332005, Peoples R China
[2] Ecol Chem Ind, Jiangxi Prov Engn Res Ctr, Jiujiang 332005, Peoples R China
[3] Jiujiang Key Lab Basin Management & Ecol Protect, Jiujiang 332005, Peoples R China
[4] Jiujiang Univ, Art Inst, Jiujiang 332005, Peoples R China
[5] Beijing Municipal Engn Profess Design Inst Co Ltd, Beijing 100037, Peoples R China
来源：
WASTE AND BIOMASS VALORIZATION | 2018年 / 9卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Anaerobic digestion; Specific biogas production (SBP); Extracellular polymeric substances (EPS); Dewaterability; EXTRACELLULAR POLYMERIC SUBSTANCES; ACTIVATED-SLUDGE; SEWAGE-SLUDGE; MICROBIAL COMMUNITY; METHANE PRODUCTION; ORGANIC FRACTION; DEGRADATION; PRETREATMENT; TEMPERATURE; PERFORMANCE;
D O I：
10.1007/s12649-017-9949-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Dewaterability of anaerobic digestate influences the further disposal ways. The role of mixing ratio on anaerobic co-digestion of food waste (F) and sludge (S) was investigated under mesophilic condition. Five different mixing ratios (F; F/S = 3:1; F/S = 1:1; F/S = 1:3; S) were evaluated with two replicates. The specific biogas production (SBP) of five mixing ratios were 95.5, 105.6, 95.6, 435.5 and 344.0 mL g(-1)-VSadded respectively. Under S condition, normalized capillary suction time (NCST) was significant correlation with protein and polysaccharide of Slime. Under F condition, NCST was significant correlated with polysaccharide of Slime. Under other conditions, the NCST was no significant correlation with protein and polysaccharide of any layers of extracellular polymeric substances (EPS). NCST increased with the increasing of sludge ratio. On day 37, NCST were 3.4 +/- 0.9, 72.1 +/- 15.6, 164.2 +/- 37.6, 179.2 +/- 30.6 and 278.1 +/- 56.1 s g(-1)-TS respectively. Adequate mixing ratio (around F/S = 1:3) of food waste and sludge under mesophilic anaerobic condition could result in high SBP. The dewaterability of anaerobic digestate deteriorated with the increasing of sludge ratio in mixture of sludge and food waste.
引用
收藏
页码：87 / 93
页数：7
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