Modification of sequencing batch reactor (SBR) using novel acryl-fiber (AFBC) for sanitary landfill leachate safe disposal

A combined process of acrylic biomass carrier and activated sludge system (traditional system) was accomplished to treat sanitary landfill young leachate with a high concentration of ammoniacal nitrogen and organic material. Stable treatment performance of an acrylic biomass carrier reactor with activated sludge traditional reactor combined with bio-fringe loaded with microorganisms (CASBF) compared to activated sludge traditional reactor (CASR) was obtained under 10 L laboratory-scale reactor as 24 h sequencing batch reactor system and 2-5 mg/L dissolved oxygen, the temperature of (20 degrees C-25 degrees C), pH 7 +/- 1, a volumetric organic load of 1,968 mg/L COD (chemical oxygen demand - COD), high ammoniacal nitrogen loading rates of 1,904.1 mg/L, food to microorganism ratio of 0.25, mixed liquor volatile suspended solid of 1,500 mg/L, sludge age of 2.7 d and hydraulic retention time of 1.7 d for 13 d duration of the experiment, respectively. The efficiency of both reactors was assessed based on the reduction in biochemical oxygen demand (BOD5), COD, ammoniacal nitrogen (NH3-N), total Kjeldahl nitrogen (TKN), phosphate (PO43-), nitrite (NO2-1), nitrate (NO3-1), suspended solids and color. The results revealed that the reactor with CASBF efficiency removed NO2-1, NO3-1, and PO43- were 77.7% with effluent concentration 10 mg L-1, 86.25% with effluent concentration 21.0 mg L-1, and 63.2% with effluent concentration 18.1 mg L-1 respectively from young leachate in comparison to CASR which exhibited the efficiently removed of NO2-1, NO43-, and PO43- was 20.7% with effluent concentration 36.1 mg L-1, 54.2% with effluent concentration 69.9 mg L-1, and 45.6% with effluent concentration 26.5 mg L-1, respectively. However, the reduction of NH3-N also TKN was more within the CASR and achieved 68.7% with effluent concentration 538.90 mg L-1 for TKN and 92.5% with effluent concentration 134.2 mg L-1 for NH3-N. This reduction is achieved via nitrification and denitrification processes. These findings indicated that CASBF has high efficiency of removal of COD, BOD, NO3-1, and PO43- from sanitary landfill young leachate and have the applicability for sanitary landfill young leachate treatment.