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Abstract
The River Nile is considered as one of the longest river among the world (6740 Km), it branched into two branches named Rosetta and Damietta. Rosetta branch starts at El Kanter El-Khyria and discharges its water in the Mediterranean Sea. The Nile is now threatened from pollution a bout 37 main drains of agriculture, sewage and industrial wastewater. Sobil and El-Rahawy drains are the main sources of pollution in Rosetta branch. Also, Kaffr El-Zayat city represents a source of industrial pollution, the factories a round the branch e.g. The Egyptian Salt and Soda Company and The Egyptian Financial and Industrial Company are the main sources of wastewater into the branch
-There are many treatment methods for contaminated sites such as, precipitation, chemical oxidation or reduction, filtration, ion exchange and membrane technologies, have been used to get rid of the pollutants. Biological methods -bioremoval- such as biosorption, bioaccumulation and /or other methods for the removal of pollution especially heavy metals may provide attractive alternative methods.
-The present study carried out with the following objectives:
I- Determination of some physico-chemical parameters of Rosetta branch water, seven water samples were collected bimonthly (from January to November 2003),three at Sobil drain area I,II and III ”agriculture waste” and four at Kaffr El-Zayat area IV,V,VI and VII ”industrial waste”.
II- Enumeration of the total count of actinomycetes (at 28-30°C) and bacteria at 22°C and 37 °C, and bacterial indicators of sewage pollution.
III- Isolation and purification of bacterial isolates that tolerate and bioremediat the studied heavy metals (Cu, Fe and Zn).
V- Study of some condition factors affecting heavy metal uptake.