METHOD FOR TREATING WASTEWATER WITH ORGANIC MATERIAL IN CONTINUOUS FLOW WITH AEROBIC GRANULAR BIOMASS

摘要

Continuous method of wastewater treatment with organic matter with granular biomass comprising: a) a first complete-mix aerobic reactor with granular biomass, where the treated water flows into a second reactor, b) a second complete-mix aerobic reactor with granular biomass, c) a decanter with a liquid surface velocity greater than or equal to 1 m/h, d) recovering the treated water from the decanter supernatant. Where the volume of the first aerobic tank is between 1/10 to 1/3 (or 10 to 33%) of the total reaction volume, the aeration in both tanks is applied at a surface velocity of between 0.5 to 5 cm/s and the granular biomass decanted in (c) is recirculated to the first reactor at the same time that biomass is allowed to pass from the first reactor to the second reactor at a recirculation ratio of 0.25 to 1. Where these conditions allow the formation and maintenance of granules of aerobic biomass in continuous flow.