جستجوی مقالات مرتبط با کلیدواژه « Biochemical oxygen demand5 removal » در نشریات گروه « پزشکی »
-
Aims
This research was conducted to investigate the efficacy and feasibility of ozone-hydrogen peroxide advanced oxidation process as a post-treatment step of composting leachate treated by an anaerobic migrating blanket reactor biological treatment system.
Materials and MethodsLeachate samples was collected from the effluent of the biological treatment system and used in an ozone reactor after dilution. The effectiveness of the pH values (4.5-11.5), H2O2 concentrations (0.5-4 g/L), ozone doses (0.2-1 g/h) and reaction times (5-270 min) were evaluated to determine optimum operational conditions.
ResultsThe highest removal efficiencies were achieved 72% and 79% for chemical oxygen demand (COD) and biochemical oxygen demand5 (BOD5), respectively, at pH 8.5, 2.5 g/L H 2 O 2 concentration, and 1 g/h ozone dose, during 270 min reaction time. Furthermore, results indicated that the BOD 5 /COD ratio was decreased from 0.53 to 0.4 after 270 min reaction time.
ConclusionsThe O 3 /H 2 O 2 was found to oxidize preferably COD and BOD 5 of the leachate samples. In consequence, a decrease in the biodegradability of leachate was observed after oxidation treatment. The O 3 /H 2 O 2 reaction proved to be a feasible technique for the oxidation of the leachate under study, and it can be considered a suitable treatment for this type of wastewater.
Keywords: Biochemical oxygen demand5 removal, chemical oxygen demand removal, composting leachate, O3, H2O2 reaction}
- نتایج بر اساس تاریخ انتشار مرتب شدهاند.
- کلیدواژه مورد نظر شما تنها در فیلد کلیدواژگان مقالات جستجو شدهاست. به منظور حذف نتایج غیر مرتبط، جستجو تنها در مقالات مجلاتی انجام شده که با مجله ماخذ هم موضوع هستند.
- در صورتی که میخواهید جستجو را در همه موضوعات و با شرایط دیگر تکرار کنید به صفحه جستجوی پیشرفته مجلات مراجعه کنید.