الفهرس 
PROBLEM IDENTIFICATION
MATERIALS AND METHODSOnly 14 pages are availabe for public view
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Abstract
In Egypt, Surface water treatment plants produce more than 100 million tons of sludge per year. Disposal of these massive quantities of sludge are discharged into natural water bodies. This study assessed the possibility to use the dynamic up flow sand filtration system (Dyna Sand) as a new technique successfully applied in different countries for water and wastewater from different sources in water sludge treatment. The current study was held to evaluate and examine the efficiency of using dynamic up flow sand filter to treat water works sludge that are produced from the surface water purification in conventional water treatment plants WTPs at different operation conditions.
The study was carried out to examine the performance of the existing conventional
system in handling WTS. The samples were collected from the sludge tanks in the plant. Moreover, samples were taken after the Dyna Sand to examine and prove the success of the filter. The parameters measured to assess the filter were Turbidity, BOD, Residual Aluminum, Algae, Total Bacterial Count and Total Suspended Solids. The filter showed high removal efficiency in eliminating these parameters. The treatment plant effluent resulted highly rates of impurities.
The study shows that the removal ratio for each material as follow:
• The removal efficiency of turbidity reached 94 %,
• Total Suspended Solids 90 %.
• Algae the removal efficiency was found to be 97%
• Bio chemical Oxygen Demand it was 84%.
After Filtration by dynamic up flow sand filter most of these impurities were removed, thus the effluent is complying with the ministry of health requirements for raw drinking water.