Co-treatment of olive-mill and urban wastewaters by experimental stabilization ponds

被引:23
作者
Jail, A. [1 ]
Boukhoubza, F. [2 ]
Nejmeddine, A. [2 ]
Sayadi, S. [3 ]
Hassani, L. [1 ]
机构
[1] Univ Cadi Ayyad, Fac Sci Semlalia, Lab Biol & Biotechnol Microorganismes, Marrakech 40000, Morocco
[2] Univ Cadi Ayyad, Fac Sci Semlalia, Lab Hydrobiol Environm & Assainissement, Marrakech 40000, Morocco
[3] Ctr Biotechnol Sfax, Lab Bioprocedes, Sfax 3038, Tunisia
关键词
Co-treatment; Olive-mill wastewater; Phytotoxicity; Stabilization ponds; Urban wastewater; WASTE-WATER TREATMENT; ANAEROBIC-DIGESTION; SEED-GERMINATION; DEGRADATION; REDUCTION; PHENOLS; IMPACT; OMW; BIODEGRADATION; BIOREMEDIATION;
D O I
10.1016/j.jhazmat.2009.11.120
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Olive oil mill wastewater (OMW) constitutes a source of environmental problems in Morocco due to its significantly high organic load, its phytotoxic properties and its relatively low biodegradability. An effective option for its disposal is its agricultural use after co-treatment with urban wastewater (UWW). The main objective of this investigation was to evaluate the potential of this co-treatment, using experimental waste stabilization ponds, in removing OMW phytotoxicity. We examined the influence of the organic load, at the entry of the treatment system, on the evolution of some physicochemical (chemical oxygen demand and polyphenols) and microbiological (fecal coliforms and fecal streptococci) parameters. The results showed a removal of the organic, phenolic and microbial load throughout the treatment which differed from one system to another according to the OMW load applied to each system. The results concerning the germination assays of Zea mays and Solanum lycopersicum suggested that the co-treatment of OMW with UWW would decrease the phytotoxicity of this waste. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:893 / 900
页数:8
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