الفهرس 
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Abstract
The pollution of streams by industrial wastewater in Egypt started vdth the industrial revolution durinb the latter half of the twentieth century. The Seouf region which. is located at the eastern part of Alexandria city is considered one of the most important industrial regions in the city, where various manufacturing activities are present such 8S food, chemical, textile, and steel industries. The liqlud wastes of some industries are discharged without treatment into agricultural drains which cause del eterious effects on fish. Some other \ivastes are discharged into the public sewerage system and mixed vii th the sewage from the residential areas. The presence of great f8ctories in the same region increased the organic load on these drains beside accwTIulation of some chemical pollutants including toxicants, and physical poll utants as color, odor, and taste. All these factors affect the healt~ o~ the ~eople specially those using those waters for drinking, and bathing. The extent of the nroblem was determined and a com parison of results with the Egyptian standards of indust rial wastewater effluents into water bodies was discussed. The study was carried out to discuss and reco~mend diff erent practical and alternatives methods of treatment bes ide some in-plant modifications to reduce the waste volume and the organic load. The study included ten pla~ts in the Seouf region. These plants were c2tegorised under the following four subcategories. I. Food industries as the starch company, Edfina cann I ing plant, and Bisco Misr (for Con~ectionary pr0ducts) plant. 11. Chenlical industries as the plastic plant, pharmaceu tical factory and Verta paper processing factory. Ill. Textile industries as El-Seouf textile company, El Motahida, and the-East company for cotton and linen. IV. Egyptian copper factories for processing of steel, copper and alillfiinium. . Four factories which have the most s8rious effect on the water courses were selected for detailed study through analysis of composite samples. The populstion equivelent of each factory was eval uated to determine the extent of the pollutional load into the water bodies. This evaluation showed that the food factories had the large pollutional load, while the chemical industries had relatively t~e lowest value. Despi te the low BOD concentration in the effluent of the copper factory, a high pollutional load was found in this plant. The textile companies had a relatively high pollutional load. A comparison of the data of each factory was discussed and compared with the listed data collected from the lit erature. , Discussion were suggested to include the necessary treatment and in-plant control measure in each factory.^leng