Kitchen grille

Grid is the most important auxiliary equipment in sewage pump station. The grid is generally composed of a group of parallel grid bars, which are obliquely placed at the inlet of the sump of the pump station. The inclination angle is 60 ° ~ 80 °. A workbench shall be set behind the grid, which shall generally be 0.5m higher than the maximum water level upstream of the grid. For the grating for manual slag removal, the length of the workbench along the water flow direction shall not be less than 1.2m, the length of the grating for mechanical slag removal shall not be less than 1.5m, and the width of the aisle on both sides shall not be less than 0.7m.

Pollutants in sewage generally exist in three forms: suspended, colloidal and dissolved. The objects of sewage physical treatment are mainly suspended solids and some colloids that may block the pump impeller and pipeline valves and increase the load of subsequent treatment units. Therefore, the physical treatment of sewage is generally also called solid-liquid separation treatment of wastewater. In principle, wastewater solid-liquid separation is mainly divided into two categories: one is that wastewater is limited and suspended solids are removed in water; The other is that the suspended solids are limited and the suspended solids are discarded due to the flow of wastewater. The grille belongs to the latter. Grid is the most important auxiliary equipment in sewage pump station. The grid is generally composed of a group of parallel grid bars, which are obliquely placed at the inlet of the sump of the pump station.

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