Patent ID: 8216471
Filing Date: 2012-07-10
Classification: C02F,Y02E

Abstract:
1. An integrated bioreactor having a concentric columnar structure and comprising an inner layer, an outer layer, an on-line pH monitor, a mechanical agitation, an inclined plate, a half-rhombic baffle and an air distributor, wherein the inner layer is an upflow anaerobic sludge blanket (UASB) and the outer layer is a moving bed biofilm reactor (MBBR), and effluent of the MBBR is recycled into the UASB, a ratio of width to height of a reaction zone of the MBBR is between 0.25 and 0.5, the MBBR width being the difference between a diameter of the integrated bioreactor and that of the UASB; the on-line pH monitor is arranged at a water outlet of the UASB; the mechanical agitation device is arranged at the bottom of the UASB; the inclined plate and the half-rhombic baffle are respectively arranged at 1-2 m position from the bottom of the bioreactor; and the air distributor is either a perforated pipe or an aerator forming a concentric circle and mounted above the inclined plate and the half-rhombic baffle.