Anaerobic Membrane Bioreactor technology has great advantages for treating wastewater, including energy recovery from organic matter. However, when the legislation requires that effluent standards be met in sensitive areas, this treatment cannot remove nutrients, thus permeate generated needs post-treatment. Apart biological processes, ion exchange is an alternative stream since it can nutrient...

Abstract This is the second of three papers dealing with metal-bearing circumneutral mine drainage from inactive Rico-Argentine site located at an elevation ≈ 2740 m (9000 feet) in San Juan mountain range southwestern Colorado. paper evaluates two years treatment using a passive system that included vertical-flow engineered biotreatment cell. The collapsed St. Louis Tunnel (SLT) discharges wate...

Four organic loading disturbances were performed in lab-scale EGSB reactors fed with ethanol. In load disturbance 1 (LD1) and 2 (LD2), the organic loading rate (OLR) was increased between 5 and 18.5 kg COD m(-3) day(-1), through the influent ethanol concentration increase, and the hydraulic retention time decrease from 7.8 to 2.5 h, respectively. Load disturbances 3 (LD3) and 4 (LD4) were appli...