Carbon source and phosphorus recovery from iron-enhanced primary sludge via anaerobic fermentation and sulfate reduction: Performance and future application

被引：49
作者：
Yang, Huan [1 ]
Liu, Jianyong [1 ]
Hu, Peishan [1 ]
Zou, Lianpei [1 ]
Li, Yu-You [2 ]
机构：
[1] Shanghai Univ, Sch Environm & Chem Engn, 333 Nanchen Rd, Shanghai 200444, Peoples R China
[2] Tohoku Univ, Grad Sch Engn, Dept Civil & Environm Engn, Aoba Ku, 6-6-06 Aza, Sendai, Miyagi 9808579, Japan
来源：
BIORESOURCE TECHNOLOGY | 2019年 / 294卷
基金：
中国国家自然科学基金;
关键词：
Chemically enhanced primary sedimentation; Anaerobic fermentation; Sulfate reduction; Carbon source; Phosphorus recovery; WASTE-ACTIVATED-SLUDGE; PRIMARY SEDIMENTATION SLUDGE; ACIDOGENIC FERMENTATION; SEWAGE-SLUDGE; WATER; RELEASE; DENITRIFICATION; PHOSPHATE; PH; PRETREATMENT;
D O I：
10.1016/j.biortech.2019.122174
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Anaerobic fermentation and sulfate reduction (AF-SR) was firstly used for recovery of carbon sources and phosphorus from Fe-enhanced primary sludge (Fe-sludge). With FeCl3 dosage of 30 mg Fe/L, 63.0% of the chemical oxygen demand (COD) and 97.3% of the phosphorus were concentrated from sewage into Fe-sludge. Batch anaerobic fermentation tests of Fe-sludge with and without sulfate addition (AF-SR and control) were performed. The results showed that volatile fatty acid concentrations of the control and AF-SR were 211.0 and 270.2 mg COD/g volatile suspended solids, respectively. Furthermore, 33.2% (control) and 56.2% (AF-SR) of the total phosphorus in Fe-sludge was released. The recovery performances of carbon source and phosphorus were calculated based on struvite precipitation. The available carbon source of the AF-SR system was 44.5% higher than that of the control. A novel integrated wastewater and sludge treatment process based on chemically enhanced primary sedimentation and AF-SR is proposed for future application.
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页数：9
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