Effects of hydraulic retention time (HRT) on denitrification using waste activated sludge thermal hydrolysis liquid and acidogenic liquid as carbon sources

被引：103
|
作者：
Guo, Yiding [1 ]
Guo, Liang [1 ,2 ,3 ]
Sun, Mei [1 ]
Zhao, Yangguo [1 ]
Gao, Mengchun [1 ]
She, Zonglian [1 ]
机构：
[1] Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China
[2] Ocean Univ China, Key Lab Marine Environm & Ecol, Minist Educ, Qingdao 266100, Peoples R China
[3] Shandong Prov Key Lab Marine Environm & Geol Engn, Qingdao 266100, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2017年 / 224卷
关键词：
Denitrification; Sludge carbon source; Hydraulic retention time (HRT); Thermal hydrolysis liquid; Acidogenic liquid; ALKALINE FERMENTATION LIQUID; BIOFILM-ELECTRODE REACTOR; SEQUENCING BATCH REACTOR; SIMULTANEOUS REMOVAL; FOOD WASTE; WATER; PHOSPHORUS; NITROGEN; PRETREATMENT; DIGESTION;
D O I：
10.1016/j.biortech.2016.11.056
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Waste activated sludge (WAS) internal carbon source can efficiently and economically enhance denitri-fication, and hydraulic retention time (HRT) is one of the most important operational parameters for den-itrification. The effects of HRT on denitrification were investigated with WAS thermal hydrolysis liquid and acidogenic liquid as carbon sources in this study. The optimal HRT was 12 h for thermal hydrolysis liquid and 8 h for acidogenic liquid, with NO3 -N removal efficiency of 91.0% and 97.6%, respectively. In order to investigate the utilization of sludge carbon source by denitrifier, the changes of SCOD (Soluble chemical oxygen demand), proteins, carbohydrates, and VFAs (Volatile fatty acids) during denitrification process were analyzed and three-dimensional fluorescence excitation-emission matrix (EEM) spec-troscopy with fluorescence regional integration (FRI) analysis was introduced. The kinetics parameters of denitrification rate (V-DN), denitrification potential (P-DN) and heterotroph anoxic yield (Y-H) were also investigated using sludge carbon source at different HRT.(C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：147 / 156
页数：10
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