Effect of fillers on key characteristics of sludge thermophilic anaerobic digestion

被引：5
作者：
Shao, Liming [1 ,3 ]
Xu, Yuanshun [1 ,2 ]
Wang, Tianfeng [1 ,2 ]
Lu, Fan [1 ,2 ]
He, Pinjing [2 ,3 ]
机构：
[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China
[2] Tongji Univ, Inst Waste Treatment & Reclamat, Shanghai 200092, Peoples R China
[3] Minist Housing & Urban Rural Dev PR China MOHURD, Ctr Technol Res & Training Household Waste Small, Beijing, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 193卷
关键词：
Anaerobic digestion efficiency; Dewaterability; Filler; Microbial community; WASTE-ACTIVATED-SLUDGE; SOLIDS RETENTION TIME; SEWAGE-SLUDGE; ULTRASONIC TREATMENT; DEWATERABILITY; BIOFILM; DISINTEGRATION; FLOCCULATION; REACTOR;
D O I：
10.1016/j.biortech.2015.06.137
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In anaerobic digestion (AD) of sludge, AD efficiency and digested sludge (DS) dewaterability are critical factors. In this study, polyester non-woven fabric fillers were integrated into a sludge digester. The effect of such fillers on digestion was investigated in thermophilic temperature range in semi-continuous mode. Methane production of filler system and control reactor were significantly different (P < 0.05, paired t-test). At hydraulic retention times of 18 days and 12 days, the corresponding methane yields from filler system were 140% and 161%, respectively, of the yields from control digester without filler. Improvement of DS dewaterability was uncertain during 110 days of operation. While after a longer period of digestion, filler system resulted in a lower normalized capillary suction time of DS (76.5 +/- 21.6 s L/g total suspended solids) than control reactor (118.7 +/- 32.9 s L/g total suspended solids). The results showed that the filler could improve thermophilic AD performance, except at too short hydraulic retention times. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：415 / 423
页数：9
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