FIELD: environmental protection; production of the devices for purification of the household sewage.
SUBSTANCE: the invention is pertaining to the biological activation purification of the household sewage by the active sludge being in the suspended state. The accumulative tank of the device for purification of the household sewage contains the angular biofilter (1) located in the body (2) with the sewage inlet fitting pipe (3), the near-bottom aerator (4) mounted along the diagonal of the tank and the pump (5) for the sludge pumping-out. The angular biofilter (1) is made in the form of the perforated vertical cylinder (6) with the perforation (7), from the opposite side of which the large bubbling aerator (9) adjoins to the cylinder (6). Inside the cylinder (6) there is the internal aerator (14) connected to the withdrawing pipe (13) with formation of the air-lift. The vertical cylinder (6) in its lower internal area is supplied with the disk plug dividing it into the upper section and the lower section. In the wall of the lower section of the cylinder (6) there are the additional holes. The outlet end of the large bubbling aerator (9) is located in the lower section of the vertical cylinder (6). Inside the upper section of the cylinder (6) there is the additional large bubbling aerator (18). The angular biofilter (1) is supplied with the biological loading (22) located in area of the perforation of the vertical cylinder (6). The biological loading (22) is made in the form of the cylindrical brushes with the nap surface. The technical result of the invention is the increased efficiency of purification of the sewage in the accumulative tank due to the increased contacting area of the active sludge with the air bubbles and optimization of the mode of formation of the air bubbles, exclusion of the clogging of the perforation of the vertical cylinder and its outlet pipe.
EFFECT: the invention ensures the increased efficiency of purification of the sewage in the accumulative tank, the increased contacting area of the active sludge with the air bubbles, optimization of the mode of formation of the air bubbles, exclusion of the clogging of the perforation of the vertical cylinder and its outlet pipe.
5 cl, 2 dwg
