Source analysis of organic matter in swine wastewater after anaerobic digestion with EEM-PARAFAC

被引：56

作者：

Zeng, Zhuo ^{[1
]}

Zheng, Ping ^{[1
]}

Ding, Aqiang ^{[1
]}

Zhang, Meng ^{[1
]}

Abbas, Ghulam ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2017年 / 24卷 / 07期

关键词：

Swine wastewater; Anaerobic digestion; Refractory organic matter; Source analysis; SOLUBLE MICROBIAL PRODUCTS; EMISSION MATRIX FLUORESCENCE; PARALLEL FACTOR-ANALYSIS; EXTRACELLULAR POLYMERIC SUBSTANCES; SUBMERGED MEMBRANE BIOREACTOR; BIOGAS PRODUCTION; EXCITATION; SPECTROSCOPY; SYSTEMS; DEGRADATION;

D O I：

10.1007/s11356-016-8324-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Swine wastewater is one of the most serious pollution sources, and it has attracted a great public concern in China. Anaerobic digestion technology is extensively used in swine wastewater treatment. However, the anaerobic digestion effluents are difficult to meet the discharge standard. The results from batch experiments showed that plenty of refractory organic matter remained in the effluents after mesophilic anaerobic digestion for 30 days. The effluent total COD (tCOD) and soluble COD (sCOD) were 483 and 324 mg/L, respectively, with the sCOD/tCOD ratio of 0.671. Fluorescence excitation-emission matrix (EEM) coupled with parallel factor analysis (PARAFAC) revealed that the dissolved organic matter in the effluents was tryptophan-like substance, humic acid substance, and fulvic acid substance. Based on the appearance time during anaerobic digestion, tryptophan-like substance and humic acid substance were inferred to originate from the raw swine wastewater, and the fulvic acid substance was inferred to be formed in the anaerobic digestion. This work has revealed the source of residual organicmatter in anaerobic digestion of swine wastewater and has provided some valuable information for the post-treatment.

引用

页码：6770 / 6778

页数：9

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