78results about How to "Easy to deal with emergency" patented technology

The invention discloses a modularized rotational-flow air-flotation filtering device which is suitable for the field of industrial sewage purification treatment and special situation emergency treatment. The modularized rotational-flow air-flotation filtering device comprises a drum. A dross collecting trough and a filtering material layer are sequentially arranged in the drum in a spaced mode from top to bottom. A swirler is arranged in the center of the drum and is a cylindrical tube. A tube opening in the upper end of the tube directly faces the portion below the dross collecting trough, and a tube opening in the lower end of the tube extends out of a lower end socket of the drum to serve as a sewage outlet. The dross collecting trough is composed of a conical cylinder with the inverse-V-shaped cross section and a vertically-upward dross tube arranged in the center of the conical cylinder. The tail end of the cylinder wall of the conical cylinder of the dross collecting trough is connected with the side wall of the cylinder in a sealed mode. A dross collecting area is formed by the upper surface of the cylinder wall of the conical cylinder of the dross collecting trough and the cylinder wall of the cylinder. A dross outlet is formed in the portion, in the dross collecting area, of the side wall of the cylinder. A water inlet tube is tangentially connected with the tube wall of the lower middle of the swirler. As rotational-flow sediment, oil (dross) air flotation and filtering separating are integrated, and novel comet filter materials are adopted, the treatment load is increased, and the device area is reduced.