الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
As a result of the increase in the population, the improvement in the standard of living, and the industrial and technological development, a shortage of fresh water resources is accrued. The wastewater contains solid, floating and dissolved
materials which represents about 0.1% of the water contains. This material
considers one of the disease and toxic material so it must to be treated by using a safe method. The waste water is treated by using several stages: primary treatment, biological treatment, physical treatment, and finally triple treatment.
Wastewater treatment and reuse i.e. recovery, is one of the suggested solutions as a
new source for water. On the other hand, wastewater usually contains high
concentrations and levels of chemical, physical and biological pollutants which require proper treatment before discharge into environment. A sample is taken form Abo Rawash waste water treatment plant in Cairo in 20
containers of 20 liters this plant contains only preliminary treatment. A pilot will establish to be used for waste water treatment is contains a four tanks , the first tank is sedimentation tank , the second tank is used as an electrical tank , the third is used as an alum and mixer tank , and the fourth tank is used as a chlorination tank. Wastewater samples were collected from Abu Rawash wastewater treatment plant,
Egypt. A mini model was constructed for the treatment process. Experiments were carried out using iron and aluminum electrodes separately and for each type at different distances between electrodes (10 and 15 cm). Different factors were studied to enhance the electrocoagulation treatment process which include
sedimentation period (3 and 5 h), different electrocoagulation periods (30 and 60 min), and different electrical voltages (12 and 24 V). Alum was used as a coagulant and the final effluent was disinfected with chlorine. The results showed
that iron electrodes were more effective than aluminum electrodes for treatment and the distances between electrodes have played a role in the treatment process since 10 cm was more effective than 15 cm. Iron electrodes with 10 cm distance between electrodes showed the maximum removal percent of physicochemical parameters such as TSS (94.2%), COD (90.1%), TKN (89.3%), BOD (95.1%) and 16 total phosphorus (83.3%). Alum enhanced the treatment efficiency and the final chlorinated effluent was in comparable with the local laws for reuse purposes. This research is aimed to establishing a variable and effective physical treatment system for waste water from treatment plant by using via lectrocoagulation method to reuse this water.