این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Journal of Public Health، جلد ۲۶، شماره ۳-۴، صفحات ۱-۸
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی REMOVAL OF OIL AND GREASE FROM THE WASTEWATER OF RAILROAD REPAIR SHOP
چکیده انگلیسی مقاله The purposes of this research have been to determine the wastewater quality of a typical railroad repair workshop and to find a way to reduce the concentrations of present contaminants especially oil and grease. The mean concentrations of oil, COD and SS in the wastewater studied were 287.69, 775.85 and 28723, respectively with average daily discharge to be 30-35 m3. Three successive treatment processes were used and the results showed the first stage was gravity flotation with 90 minutes retention time. Removal efficiencies achieved for COD, SS and oil were determined 43%, 49.4% and 55.5% respectively. The second stage of treatment was coagulation either lime or ferric chloride could be used for this purpose at PHs of 9 and 6. COD and oil removals by lime treatment were 76.6% and 84.4%. The final stage of treatment was DAF at 3 atmospheric pressure, by which 92.5%, 89.5%, 89.92% and 88% removals were achieved for oil, SS and COD, respectively.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله z جوهری | z johari


a r مصداقی نیا | a r mesdaghinia


f واعظی | f vaezi


m ghaserni | m ghaserni


نشانی اینترنتی http://ijph.tums.ac.ir/index.php/ijph/article/view/1786
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Articles
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات