75results about How to "Long mud age" patented technology

The invention discloses a method for treating organic wastewater through dynamic membrane anaerobic-aerobic integration, and relates to a wastewater treatment method. The original wastewater enters a first-stage aerobic tank in which a first-stage perforated aeration pipe is arranged, an external air compressor is used for blast aeration, the aeration amount is controlled by a rotameter, and sludge is discharged from the bottom of the first-stage aerobic tank; the wastewater flowing through the first-stage aerobic tank flows into a first-stage anaerobic tank through a first-stage dynamic membrane, a first-stage stirrer device is arranged in the first-stage anaerobic tank, and sludge is discharged from the bottom of the first-stage anaerobic tank; the wastewater flowing through the first-stage anaerobic tank flows into a second-stage aerobic tank through a second-stage dynamic membrane, a second-stage perforated aeration pipe is arranged in the second-stage aerobic tank, an air compressor is used for blast aeration and sludge is discharged from the bottom of the second-stage aerobic tank; and the wastewater flowing through the second-stage aerobic tank flows into a second-stage anaerobic tank through a third-stage dynamic membrane, a second-stage stirrer device is arranged in the second-stage anaerobic tank, sludge is discharged from the bottom of the second-stage anaerobic tank, and the wastewater reaching the standard is discharged through a water outlet of the second-stage anaerobic tank.

A deep-well aeration membrane biological reactor waste-water disposal process and a corresponding apparatus relate to the waste-water disposal technique field, aiming at solving the technical problems of further reducing occupied area and energy cost by the deep-well aeration waste-water disposal. The waste-water disposal apparatus comprises a deep well and a top trough; the top of the deep well is connected with the bottom of the top trough, and a liquid raising circulation system is arranged in the deep well. The apparatus is characterized in that the apparatus also comprises a membrane biological reactor connected with the top trough; a membrane element which is connected with a water outlet tube and is arranged on the upper-internal part of the membrane biological reactor; an aerationdevice which is connected with a fan and is arranged on the lower part of the membrane element; a sludge hopper is arranged on the lower (bottom) part of the membrane biological reactor; a sludge backflow pipe connected with the bottom of the top trough and a sludge-draining pipe connected with a sludge-removing device which are respectively arranged at the bottom of the sludge hopper and are controlled by valves respectively. The invention makes use of the suction of the circulation flow to the sludge backflow pipe to absorb the sludge to the deep well to be mixed with sewage. The invention is characterized in that the occupied area is small; the activated sludge has high density; the rest sludge is less and the energy cost is low.