برآورد توزيع قطر بر چسب جمعيت در شبكه هاي جمع آوري فاضلاب شهرهاي ايران

Distribution of Sewer Diameters in Wastewater Collection Based on Population Size for Urban Areas in Iran

This research was performed to elicit the distribution of sewers diameter in terms of population by means of information collection via consultant engineering and urban water and wastewater engineering companies. Based on obtained data in the cities with population fewer than 100/000 the highest percentage of diameter distribution was 79.12% for 200mm pipe and the lowest was 0.06% for 900mm pipe. In the cities with population between 100000 and 500000 the highest percentage of diameter distribution was found 56.67% for 200mm pipe and the lowest was 0.12% for 900 mm pipe. In the cities with population of 500000 and more the highest percentage of diameter distribution was 59.67% for 200mm pipe and the lowest was 0.19% for 900mm pipe. Without population factor the highest percentage of diameter distribution was 60.73% for 200mm pipe and the lowest was 0.131% for 900mm pipe.