Parallel Grid Stainless Steel Drain Grate No Accumulation Dirt With Workbench

Custom Stainless Steel Drain Grate Grille Grating For Water Leakage

Custom Stainless Steel Drain Grate Grille Grating For Water Leakage

• The grille is the main auxiliary equipment in the sewage pumping station. The grid is generally composed of a set of parallel grids that are placed obliquely at the inlet of the pumping station sump. The angle of inclination is 60°~80°. A workbench should be set up behind the grille. The workbench should generally be 0.5m above the highest water level upstream of the grille. For the artificial slag grid, the length of the workbench along the water flow direction is not less than 1.2m, the length of the mechanical slag grid is not less than 1.5m, and the width of the aisles on both sides is not less than 0.7m.
• Contaminants in sewage generally exist in three forms: suspended (including floating), colloidal, and dissolved. The physical treatment of sewage mainly consists of suspended solids and partial colloids that may block the pump impeller and pipeline valves and increase the load of the subsequent treatment unit. Therefore, the physical treatment of sewage is generally referred to as 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 the suspended solids are removed in water; the other is that suspended solids are subject to certain restrictions, and the wastewater flows to suspend solids. abandon. The grille belongs to the latter. The grille is the main auxiliary equipment in the sewage pumping station. The grid is generally composed of a set of parallel grids that are placed obliquely at the inlet of the pumping station sump.

Custom Stainless Steel Drain Grate Grille Grating For Water Leakage Classification

• According to the shape, the grid can be divided into two types: a flat surface and a curved grid. The planar grid consists of a grid and a frame. The curved grid can be divided into fixed curved grille and rotating drum grille. According to the net spacing of the grid bars, it can be divided into three types: coarse grid (50~100mm), middle grid (10~40mm) and fine grid (1.5~10mm). Both the flat grille and the curved grille can be made into three types: thick, medium and thin. Since the grid is an important facility for physical treatment, the newly designed sewage treatment plant generally adopts two coarse and medium grids, and even three coarse grids, medium and fine grids. According to the method of clearing slag, the grid can be divided into two types: artificial slag and mechanical slag grid. The artificial slag grid is suitable for small sewage treatment plants. When the amount of slag is more than 0.2m3/d, in order to improve the labor and sanitary conditions of workers, a mechanical slag grille should be used.

Custom Stainless Steel Drain Grate Grille Grating For Water Leakage Requirements

• A grid must be provided before the sewage treatment system or pump. The amount of suspended matter and floating matter (collectively referred to as grid slag) that can be trapped by the grid varies greatly depending on the width of the gap between the selected grids and the nature of the sewage. The width of the gap between the grid bars should meet the following requirements: 16~25mm for mechanical cleaning before the sewage treatment system, 25~40mm for manual removal; before pump, it should be determined according to the requirements of the pump. If the gap width between the water grid grille bars is not more than 20mm, the grille may not be installed before the sewage treatment system. The number of grating grid slag is related to the gap width between the grid bars: when the gap width between the grid bars is 16~25mm, the grid slag amount is 0.10~0.05m3/103m3 sewage; when the gap width between the grid bars is 25~40mm At the time, the amount of grid slag is 0.03~0.01m3/103m3 of sewage. A workbench should be set up behind the grille. The workbench should generally be 0.5m above the highest water level upstream of the grille. For the artificial slag grille, the length of the workbench along the water flow direction is not less than 1.2m, the length of the mechanical slag grille is not less than 1.5m, and the width of the aisles on both sides is not less than 0.7m.

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