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Minufiya University (2011)

Studies And Follow Up Of Microorganisms And Inorganic Pollutants Of Underground Water At Sadat City

Hegazy, Eid Mohammed M. 

Titre : Studies And Follow Up Of Microorganisms And Inorganic Pollutants Of Underground Water At Sadat City

Auteur : Hegazy, Eid Mohammed M. 

Etablissement de soutenance : Minufiya University

Grade : Master of Science in Microbiology 2011

Résumé
Sadat city is located in the northwest of Cairo city at 93 Km of the desert road with an area of 500 km2. The research aims are to assess the pollution load of bacterial water indicators, and some heavy elements and its compatibility with the standards in Egypt. El- Sadat City groundwater is the only source as drinking water, so it was collected from the tap water, bottled water plants in the city and the swimming pools of the city clubs. For identification of indicators of bacterial contamination of the water distribution system in residential areas of the city, as well as various industrial areas, bacterial contamination was detected through the studying period from 10/2007 to 08/2008. Bacterial indicators that have been recorded were total bacterial count, total coliform, fecal coliform and fecal streptocoliforms in a manner that multiple tube methods with measuring free residual chlorine. In the city’s bottled water plants, samples were examined from two sources A & B in August of 2008 and the indicators that have been disclosed are total bacterial count, total coliform and fecal coliform fecal streptocoliform and Pseudomonas Aureginosa by multiple tube methods. In the same way, the water samples collected from the city’s clubs (El-Nogoom and youth center) through August 2008 were examined . For the measurements of heavy metals, the water samples were collected from the city and most of the water wells. The elements that measured were Lead - Zinc - Cadmium - chromium - Copper by using the atomic absorption spectrum, as well as the measurements of nitrite as indication of recent pollution and measured the free residual chlorine in all bacteriological samples that collected for examination in the period from 10/2006 to 11/2007. The results of heavy metals in water samples were less than Egyptian standards guidelines and therefore, water was safe for human uses. Also, the results of the study showed that there were presence of pollution detected by the total bacterial count, and total coliform in some residential areas. Also, in some cases, facal coliform were detected in case of the absence of free residual chlorine. In the case of free residual chlorine more or equal to 0.5 mg/l, there were no signs of pollution. All water samples had no contamination with Streptococcus facal bacteria. The bottled water was not contaminated with any pollution indicators so, it complied with the Egyptian standards. The swimming pools water samples were contaminated by all bacterial pollution indicators such as total bacterial count, total coliform and fecal coliform fecal strepto coliform and Pseudomonas Aureginosa in the absence of free residual chlorine or low concentration( less than 0.5 ppm).

Présentation étendue (EULC)

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