The Influence of Municipal Wastewater Treatment Technologies on the Biological Stabilization of Sewage Sludge: A Systematic Review

被引:19
作者
Luis Cardenas-Talero, Jose [1 ]
Antonio Silva-Leal, Jorge [2 ]
Perez-Vidal, Andrea [2 ]
Torres-Lozada, Patricia [1 ]
机构
[1] Univ Valle, Fac Engn, Study & Control Environm Pollut Res Grp ECCA, Cali 760032, Colombia
[2] Univ Santiago Cali, Fac Engn, Elect Ind & Environm Engn Res Grp GIEIAM, Cali 760032, Colombia
关键词
biological stabilization; biosolids; organic matter; sludge management; sewage sludge; wastewater treatment; ACTIVATED-SLUDGE; TREATMENT PLANTS; RETENTION TIME; CURRENT STATE; BIOSOLIDS; SOIL; MANAGEMENT; DIGESTION; IMPACT; PRETREATMENT;
D O I
10.3390/su14105910
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Various wastewater treatment technologies are available today and biological processes are predominantly used in these technologies. Increasing wastewater treatment systems produces large amounts of sewage sludge with variable quantities and qualities, which must be properly managed. Anaerobic and aerobic digestion and composting are major strategies to treat this sludge. The main indicators of biological stabilization are volatile fatty acids (VFAs), volatile solids (VS), the carbon/nitrogen (C/N) ratio, humic substances (HS), the total organic carbon (TOC), the carbon dioxide (CO2) evolution rate, the specific oxygen uptake rate (SOUR), and the Dewar test; however, different criteria exist for the same indicators. Although there is no consensus for defining the stability of sewage sludge (biosolids) in the research and regulations reviewed, controlling the biological degradation, vector attraction, and odor determines the biological stabilization of sewage sludge. Because pollutants and pathogens are not completely removed in biological stabilization processes, further treatments to improve the quality of biosolids and to ensure their safe use should be explored.
引用
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页数:21
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