SIMULATED DAIRY WASTEWATER TREATMENT IN A PILOT PLANT SCALE MAGNETO-ACTIVE HYBRID ANAEROBIC BIOFILM REACTOR (MA-HABR)

Abstract The aim of this study was to determine the effects of magneto-active microporous packing media manufactured by extrusion technology and modified by the addition of relevant amounts of metal catalysts and magnetic activation on the effectiveness of simulated dairy wastewater (SDW) treatment and biogas productivity in a pilot plant scale hybrid anaerobic biofilm reactor with full mixing. The best performance was found at an organic loading rate (OLR) in the range 6.0 - 8.0 kg COD/m3·d, where the chemical oxygen demand (COD) removal was about 80%, the biogas yield ranged from 256.7 - 310.9 L/kg CODremoved, the methane production ranged from 420.6 - 557.1 L/d and total phosphorus removal ranged from 82.9 - 90.7%. The study demonstrated that the application of the innovative packing media in the biofilm-bed reactor enhanced the sorption of organic matter, biogas productivity and the binding of biogenic compounds.

摘要 本研究旨在探究经挤出成型技术制备、通过添加适量金属催化剂并经磁活化改性的磁活性微孔填料介质（magneto-active microporous packing media），对全混合式中试规模混合厌氧生物膜反应器中模拟乳制品废水（SDW，simulated dairy wastewater）的处理效果与沼气产率的影响。实验结果显示，当有机负荷率（OLR，organic loading rate）处于6.0~8.0 kg COD/m³·d区间时，系统综合性能最优：化学需氧量（COD，chemical oxygen demand）去除率约为80%，沼气产率介于256.7~310.9 L/kg 去除COD，甲烷产量为420.6~557.1 L/d，总磷去除率达82.9%~90.7%。本研究证实，将该创新性填料介质应用于生物膜床反应器，可显著强化有机物吸附能力、提升沼气产率并增强生物源化合物的结合固持效果。