الفهرس 
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Abstract
A survey was conducted to report on the efficiencies of various treatment technologies being used at major wastewater treatment plants (WWTPs) in Sharkia governorate, Egypt. Twelve, full-scale wastewater treatment facilities with a design capacity varied from 15,000 to 40,000(m3
/d) were evaluated. Analysis data for two months was obtained from plants operation companies. Influent and effluent five-day Biochemical Oxygen Demand(BOD5), total suspended solids (TSS), Chemical oxygen demand (COD), total dissolved solids(TSS), and effluent concentration of dissolved oxygen (DO) were evaluated and compared to Environmental standards for the treated sewage and discharge limit for law 48/1982, analysis shows that almost 75% of the WWTP meets the required treatment standards while 25% of the facilities reported some violations.In light of the engineering and technological results that were communicated, these results were used to develop the environmental studies course for students of the College of Industrial Education - students of the College of Technology and Education currently, by analyzing the content of the current course and arriving at a list of concepts and skills in it, then calculating The validity and reliability of this list and reaching it in its final form. A list of the proposed skills and concepts that were not previously present in the current course was also made; And that is through the work of a training program with the engineering results that have been reached to ensure the extent of achieving the goals entrusted to it, and then applying the research tools represented in the test and the observation card on the research sample. The validity of the program as well as the research tools were calculated by presenting them to a group of arbitrators specialized in this technological and educational field before the final application,as well as calculating the stability related to this regard.At the end of the application and after analyzing the results, the effectiveness of the training program was ascertained, and then the development of an environmental studies course for students of the Graduate Studies Department at the College of Technology and Education was reached.