Application of Dissolved Air Flotation Process for Industrial Sludge Thickening: A Laboratory-scale Study
- سال انتشار: 1396
- محل انتشار: نشریه بین المللی علوم بهداشت، دوره: 4، شماره: 1
- کد COI اختصاصی: JR_IAHS-4-1_005
- زبان مقاله: انگلیسی
- تعداد مشاهده: 527
نویسندگان
Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences,
Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences,
Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences,
Department of Biostatistics and Public Health, Health Faculty, Kashan University of Medical Sciences, Kashan, Iran
Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences,
Department of Environmental Health Engineering, School of Public Health, Kashan University of Medical Sciences,
چکیده
Aims: Increasing population density in cities has led to an increase in industrial and municipal wastewater sludge generation volume. Dissolved air flotation (DAF) can widely be used for water and wastewater treatment. The aim of our study is to evaluate some DAF design parameters on biological sludge thickening which generated from an industrial wastewater treatment plant. Materials and Methods: This experimental research had been carried out as a laboratory‑scale study on DAF process to thickening of the biological sludge. The required amount of sludge was taken once from the Amikabir industrial town wastewater treatment plant in Kashan, Iran. After determination of optimal recycling rate, pH, and coagulant dose, effects of pressure (3, 5, and 7 atm), flotation time (5 and 10 min), and coagulant addition were evaluated on DAF process efficiency. Results: According to this investigation results, the optimal pH and dose of coagulant were obtained 7.5 and 200 mg/L, respectively. Maximum process efficiency for the reduction of total dissolved solids (TDSs), total solids (TSs), and turbidity parameters was 61.01%, 84.02%, and 97%, respectively. Furthermore, the results showed that in contrast to time, coagulant addition and pressure have significant effect on DAF process. Conclusion: DAF process had suitable thickening efficiency to removal of TDS, TS, and turbidity on biological activated sludge.کلیدواژه ها
Flotation, industrial wastewater treatment, sludge disposal, thickeningمقالات مرتبط جدید
- شیوههای سازگاری با باد محلی خوشاباد در روستای ترسه شهرستان مینودشت گلستان پژوهشی در انسانشناسی محیطی
- تاثیر اضطراب ناشی از کووید-۱۹ بر عوامل تعیین کننده ی بهره وری براساس بار کاری و عملکرد شغلی فردی با استفاده از تحلیل میانجیگری شبکه بیزین
- تجزیه و تحلیل عوامل خطر با استفاده از داده های نظرسنجی عمومی اجتماعی (GSS۱)
- Personal Hygiene of Ancient Egyptians; AnthropologyApproach
- ارائه الگویی جهت بهبود تجزیه و تحلیل نقاط شکست در کوره های قوس الکتریکی در یک واحد ریخته گری
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.