Monsalvo Victor M, Lopez Jesus, Mohedano Angel F, Rodriguez Juan J
Chemical Engineering Section, Universidad Autonoma de Madrid, Francisco Tomas y Valiente 7, Madrid, 28049, Spain,
Environ Sci Pollut Res Int. 2014 Nov;21(22):12662-70. doi: 10.1007/s11356-014-3208-x. Epub 2014 Jun 25.
This work evaluates the treatment of wastewater from a personal care products factory by a full-scale side-stream membrane bioreactor (MBR) intermittently fed. The wastewater contained particulate and soluble chemical oxygen demand (COD) which is partially removed by physicochemical pretreatment. Steady removal efficiencies above 98 % were achieved for BOD5, COD and suspended solids. Fats, oils and grease present in the raw wastewater were also successfully removed. The MBR was operated at an average permeate flux of 12 L/m2 · h (LMH) working at a transmembrane pressure of 272 ± 97 mbar. The soluble microbial products concentration remained fairly stable at 175 ± 25 and 85 ± 15 mg/L for proteins and carbohydrates, respectively. This maintained the filtration characteristics of the mixed liquor unaltered over a long-term basis, which was evidenced by a constant permeability of 43 ± 19 LMH/bar. Most of the trace organics detected in the wastewater were completely removed and only some fragrances were detected in the permeate at trace concentrations.
本研究通过全尺寸侧流间歇进水膜生物反应器（MBR）对一家个人护理产品工厂的废水处理进行了评估。该废水含有颗粒态和溶解性化学需氧量（COD），通过物理化学预处理可部分去除。对生化需氧量（BOD5）、COD和悬浮固体的稳定去除效率达到了98%以上。原废水中存在的油脂也被成功去除。MBR的平均渗透通量为12 L/m²·h（LMH），跨膜压力为272±97毫巴。蛋白质和碳水化合物形式的可溶性微生物产物浓度分别稳定保持在175±25 mg/L和85±15 mg/L。这使得混合液的过滤特性长期保持不变，这一点通过43±19 LMH/巴的恒定渗透率得到了证明。废水中检测到的大多数痕量有机物被完全去除，渗透液中仅检测到痕量浓度的一些香料。
