A filter screen and sewage treatment device and method

Abstract

The invention discloses a filter net, a sewage treatment device and a method, and belongs to the technical field of sewage treatment. Including: a first mesh and a second mesh; wherein, the weaving structure of the first mesh and the second mesh is as follows: a part of the first mesh and the second mesh are equidistantly distributed in X In the axial direction, the remaining first mesh and second mesh are equidistantly distributed on the Y axis, and the first mesh on the Y axis passes through the first mesh on the X axis in a sinusoidal manner. The second mesh wire and the second mesh wire located on the Y axis pass through the first mesh wire and the second mesh wire located on the X axis in a cosine manner. The filter net used in the sewage treatment device of the present invention is a three-dimensional woven net, which is a three-dimensional porous structure woven by two kinds of mesh wires with different diameters, and has the characteristics of high porosity, large specific surface area, and uniform pore size distribution. It solves the problem of incomplete filtration or clogging caused by small flow in the prior art.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a filter net and a sewage treatment device and method. Background technique [0002] In the existing water treatment process, the water is generally treated by multi-layer filtration through the filter screen to achieve a high-efficiency filtration effect, or the filter screen is wrapped into a filter element for filtration. However, the existing filter screens are all two-dimensional nets. When the two-dimensional nets are cross-woven, the overlap between the mesh wires is relatively large, and the actual filtration area perpendicular to the water flow is much smaller than the calculated filtration area. That is, the real filtering effect is actually far lower than the expected filtering effect. Contents of the invention [0003] In order to solve the technical problems in the above-mentioned background technology, the present invention provides a filter ...

AI Technical Summary

Problems solved by technology

However, the existing filter screens are all two-dimensional nets. When the two-dimensional nets are cross-woven, the overlap between the mesh wires is relatively large, and the actual filtration area perpendicular to the water flow is much smaller than the calculated filtration area. That is, the real filtering effect is actually far lower than the expected filtering effect

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