Role of polyferric sulfate and ferric chloride on anaerobic fermentation of sludge from novel two-stage process for resource recovery

被引：0
|
作者：
Deng, Mengxuan [1 ]
Wang, Yonglong [2 ]
Qiu, Shan [1 ,3 ]
Jiang, Zhongqi [1 ]
Jing, Baojian [1 ]
Yang, Siyi [4 ]
Jia, Xinghua [5 ]
机构：
[1] Harbin Inst Technol, Sch Environm, Harbin 150090, Peoples R China
[2] China Shanghai Architectural Design & Res Inst CO, Shanghai 200000, Peoples R China
[3] Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
[4] China Met Construct Engn Grp CO LTD, Chongqing 404100, Peoples R China
[5] Longjiang Environm Protect Grp CO LTD, Harbin 150090, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2024年 / 406卷
关键词：
Organic carbon capture; Iron coagulants; Volatile fatty acids; Phosphorus; WASTE-WATER TREATMENT; RATE ACTIVATED-SLUDGE; FLUORESCENCE EXCITATION; REGIONAL-INTEGRATION; CARBON SOURCE; PHOSPHORUS; DIGESTION; HYDROLYSIS; MECHANISMS; COMMUNITY;
D O I：
10.1016/j.biortech.2024.131014
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Polyferric sulfate (PFS) and ferric chloride (FC) were compared for their efficiencies in capturing organic carbon and phosphorus, and their effects on the anaerobic fermentation process of sludge from a pilot-scale two-stage reactor were studied. Both PFS and FC promoted organic carbon and phosphorus capture. Further study revealed that PFS-based sludge with a dosage of 18 mg Fe/Lsewage showed a better volatile fatty acids (VFAs) production performance (202.97 +/- 2.38 mg chemical oxygen demand (COD)/g volatile solids (VS)) than that of FC-based sludge (169.25 +/- 1.56 mg COD/g VS). Besides, the high dosage of PFS effectively promoted the activities of the alpha-glucosidase and proteases. The dissimilatory iron reduction process enhanced sludge flocs disintegration and the conversion of carbohydrates and proteins to VFAs. Non-hydroxyapatite phosphorus predominated in the total phosphorus of all samples. This study contributes to developing strategies for optimizing iron-based sludge management and high-value product recovery.
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页数：10
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