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Analysis of Wastewater for Use in Agriculture

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Analysis of Wastewater for Use in Agriculture

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An illustrated guide to the laboratory analysis of treated wastewater intended for use in agriculture. Noting that the use of wastewater for crop irrigation is becoming increasingly common, the book aims to help laboratories ensure that wastewaters intended for agricultural use comply with WHO guideline values for microbiological quality. These values were previously established by WHO in order to protect against the risk that wastewater irrigation may facilitate the transmission of excreta-related diseases. Two major risks are addressed: the transmission of intestinal nematode infections to crop consumers and agricultural workers, and the transmission to crop consumers of faecal bacterial diseases, including bacterial diarrhoea and dysentery, typhoid and cholera.

Analytical procedures recommended in the manual are simple and effective, require minimum equipment, and can be carried out by persons with little or no previous parasitological or microbiological experience. All procedures are fully explained and clearly illustrated in over 40 photographs, including 20 color plates. Relevant laboratory skills are also explained with the aim of encouraging standardized performance of procedures.

The manual has three chapters. The first, on sanitary parasitology, provides full details for the performance of the modified Bailenger method for the enumeration of intestinal helminth eggs in wastewater. A brief explanation of the advantages and disadvantages of this method is followed by a list of the simple equipment and consumables required, and an illustrated guide to each step in the analysis. Chapter two, on sanitary bacteriology, provides similarly detailed information for three procedures recommended for the enumeration of faecal coliform bacteria: two most probable number methods and a membrane filtration method. The final chapter sets out guidelines for conducting routine monitoring of faecal coliforms and helminth eggs.


Additional Information

condition new
ISBN 9789241544849
author R.M. Ayres,D. Mara,D.D. Mara
Number of Pages 35
Publisher World Health Organization
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