Hanging chain microporous rubber membrane tube aeration systems for sewage disposal Tupper card system. Distinguished from other aeration techniques are: gas distribution pipeline floating in the water, rubber membrane tube aeration unit after suspension and floating hose pipe connected to the fabric, in the course of the rubber membrane aeration tube underwater aeration unit can swing freely significant characteristics of high efficiency and low consumption, easy maintenance, and in the United States, Germany, Finland, Italy, Greece and other countries has been widely used. Hanging chain microporous rubber membrane aeration system consists of air supply hose pipe floating cloth airway, hanging hoses, rubber membrane tube aeration unit. Rubber membrane suspension chain aerator (4) tube aeration unit is hanging chain aeration system in the center of its own weight sink underwater; floating cloth tube floating in the water, gas hose through the valve and the float cloth attached to the trachea and gas mains. The compressed air introduced into the trachea floating cloth, and then after hanging hose pipe for introducing air into the rubber membrane aeration unit, through porous rubber membrane tube with small bubbles on the way to release, complete aeration process. A floating cloth trachea device has several sets of rubber membrane tube aeration unit, composed of a chain of aeration, aeration tank aeration chain across the strait, an aeration tank aeration chain need multiple devices. Floating cloth trachea both ends with stainless steel wire rope fixed to both sides of the aeration tank; gas supply hose ends were set into dry cloth trachea tube and float, with ferrule lock; the suspension were set into the ends of the hose floating cloth trachea tube fittings and rubber membrane aerator stainless steel fittings, and pipe clamps lock; aeration tank with water level progress, and gradually tightened fixed to floating aeration tube ends of the stainless steel wire rope, until the water level rises to the design level, stainless steel wire rope fixed at both ends, hoisting chain aeration system device end.