Improvement of water treatment pilot plant with Moringa oleifera extract as flocculant agent

被引：30

作者：

Beltran-Heredia, J. ^{[1
]}

Sanchez-Martin, J. ^{[1
]}

机构：

[1] Univ Extremadura, Dept Chem Engn & Phys Chem, E-06071 Badajoz, Spain

来源：

ENVIRONMENTAL TECHNOLOGY | 2009年 / 30卷 / 06期

关键词：

Moringa oleifera; flocculation; natural coagulants; slow sand filtration; Kozeny; PHARMACOLOGICAL PROPERTIES; SALT SOLUTION; WASTE-WATER; SEED; COAGULATION; QUALITY; PROTEIN; COMPONENTS; MECHANISM; SYSTEM;

D O I：

10.1080/09593330902831176

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Moringa oleifera extract is a high-capacity flocculant agent for turbidity removal in surface water treatment. A complete study of a pilot-plant installation has been carried out. Because of flocculent sedimentability of treated water, a residual turbidity occured in the pilot plant (around 30 NTU), which could not be reduced just by a coagulation-flocculation-sedimentation process. Because of this limitation, the pilot plant (excluded filtration) achieved a turbidity removal up to 70%. A slow sand filter was put in as a complement to installation. A clogging process was characterized, according to Carman-Kozeny's hydraulic hypothesis. Kozeny's k parameter was found to be 4.18. Through fouling stages, this k parameter was found to be up to 6.36. The obtained data are relevant for the design of a real filter in a continuous-feeding pilot plant. Slow sand filtration is highly recommended owing to its low cost, easy-handling and low maintenance, so it is a very good complement to Moringa water treatment in developing countries.

引用

页码：525 / 534

页数：10

共 37 条

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