مشخصات پژوهش

عنوان	Investigation of affecting parameters on treatinghigh-strength compost leachate in a hybrid EGSBand fixed-bed reactor followed byelectrocoagulation–flotation process.
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Anaerobic digestion, Compost leachate, Hybrid EGSB–FB/ECF process, Response surface methodology(RSM), Wastewater treatment
چکیده	In this research, treatability of high-load compost leachate in a hybrid expanded granu-lar sludge bed (EGSB) and fixed-bed (FB) bioreactor followed by electrocoagulation–flotation(ECF) system was examined. The operational factors in EGSB–FB were influent chemical oxy-gen demand (COD), hydraulic retention time (HRT) and COD/nitrogen ratio (COD/N). And,their interactive effects on the efficiency of COD removal and biogas production rate (BPR) asresponses were analyzed and correlated by response surface methodology (RSM). The opti-mum conditions of the hybrid EGSB–FB reactor were acquired at COD = 7800 mg/L, HRT = 35 h,COD/N = 70, in which COD removal efficiency was 83% and BPR 94 mL/h. The amount of con-fidence interval was 95%. COD (relevant coefficient = 9.8) and HRT (relevant coefficient = −24)were resulted respectively as the most effective parameters on COD removal and BPR. Yet,COD/N parameter imposed negative effect on COD removal and BPR in values less than about100. The outcomes indicated that operated ECF as post-treatment in constant conditions(electrolysis time = 75 min, electrodes distance = 3 cm, voltage = 20 V) successfully satisfieddischarge criteria in the most part of experimental domains.
پژوهشگران	شیلان الیاسی (نفر سوم)، تیمور امانی (نفر دوم)، وفا دستیار (نفر اول)