Patent ID: 7022226
Filing Date: 2006-04-04
Classification: C02F

Abstract:
1. An upflow anaerobic reactor 1 for applying to an apparatus for treating wastewater which comprises: a principal axis 2 which is formed vertically in the center of the anaerobic reactor 1 and rotates in accordance with a driving force transferred from a driving means; a wastewater inflow tube 3 and a returning sludge inflow tube 4 which are installed in an outer and upper portion of the anaerobic reactor 1 and through which the wastewater and returning sludge are injected respectively; a retentive portion 5 which is installed and fixed on the upper circumference of the principal axis 2 so as to rotate with the principal axis 2 and through which the wastewater and the returning sludge introduced from the ends of the wastewater inflow tube 3 and the returning sludge inflow tube 4 pass; a single or multiple outflow tubes 6 which are installed and fixed on the principal axis 2 so as to rotate with the principal axis 2 and have one end connected with the retentive portion 5 directly and the other end installed in an inner and lower portion of the anaerobic reactor 1 and equipped with a porous tube which discharges a mixture of wastewater and returning sludge; an outflow device 7 which is installed on an upper portion of the anaerobic reactor 1 in order to discharge reaction water including some sludge into the aerobic reactor 20 and has a weir structure; and, a sludge condensing device 8 which is installed on a bottom part of the anaerobic reactor 1 and treats the sludge precipitated in the center of the anaerobic reactor 1 by using a gravitational force.