The grid can be easily divided into mechanical grids and artificial grids. The biggest difference between them is the difference in cleaning methods. The transmission system of mechanical grating equipment has three kinds of electric drive, hydraulic drive and hydraulic drive. In engineering applications, electric drive grids are the most common.

According to the grid grating spacing, the grid is generally divided into two basic types: coarse grid and fine grid. The coarse grid is generally set in the pumping station sump, while the fine grid is placed in front of the grit chamber. According to the water treatment process, the grid is generally set according to the principle of coarseness and fineness, and the spacing of the grid grids is determined according to the original wastewater quality.

The artificial grating device mainly uses the manual to timely remove the dirt trapped on the grid device to prevent the grid gap from being blocked. In small and medium-sized sewage treatment stations, the amount of pollutants that need to be intercepted is generally small, and artificial cleaning grids are provided. These grilles are made of straight steel strips and placed at an inclination of 50° to 60°, so that the effective grid area can be increased by 40% to 80%, and it is easy to clean and reduce head loss. Whether it is a mechanical grille or a manual grille, it is a relatively large amount of equipment used in sewage treatment, which plays an important role in cleaning up.www.khnwatertreatment.com