Application: raw tap water to remove algae, water fleas and other plankton or the filtration treatment of industrial water (such as the white water microfiltration purification of papermaking wastewater and the recovery of pulp), and the final treatment of sewage, etc.
The Johnson Contra-shear Screens is a filtration element composed of a stainless steel mesh. When it is necessary to remove slightly smaller impurities such as fiber, pulp, algae, etc. in the water, screens with different apertures can be selected.
The screen with a hole diameter of less than 10mm is mainly used for the pre-treatment of industrial wastewater. It can trap floating objects with a size greater than 3mm on the mesh screen.
A fine screen with a hole diameter of less than 0.1mm is used for the final treatment of the effluent after treatment or as a treatment for reused water.
Johnson Contra-shear Screens are often installed at the water intake of large surface water treatment plants, which are composed of metal wire meshes wound on the upper and lower rotating shafts.
The diameter of the mesh is usually 2mm, and the close distance between the meshes is generally 4~10mm.
The rotating screen is driven by a motor with a linear speed of 4m/min, which can automatically and continuously carry out high-pressure water cleaning.
