This is a very useful question. The working pressure of a quartz sand carbon steel filter is not a fixed value. It is directly related to the core equipment design, filter media condition, operating conditions, and water quality conditions.
1. Equipment's own design parameters
The thickness and pressure resistance rating of the tank material are fundamental; the wall thickness and welding process of carbon steel tanks determine their maximum pressure limit.
The pressure resistance of components such as the water distribution system and end cap structure will limit the upper limit of the overall working pressure.
2. Filter media status
The particle size and packing height of the filter media affect the water flow resistance. The finer the particle size and the higher the packing height, the greater the required working pressure.
The degree of filter media contamination will increase with operating time, the resistance will gradually rise, and the working pressure will also change accordingly.
3. Actual operating conditions
The amount of water processed is directly related to the filtration flow rate. The higher the flow rate, the greater the resistance of water flow through the filter layer, and the higher the operating pressure needs to be matched.
The pressure requirements of the backwashing process will affect the operating pressure setting, and pressure adjustment space must be reserved during backwashing.
4. Influent water quality conditions
When the concentration of suspended solids in the influent is high, the filter layer is prone to clogging, which can lead to a rapid increase in operating pressure.
Changes in the inlet water temperature affect the viscosity of the water; the lower the water temperature, the higher the viscosity, requiring higher pressure to pass through the filter layer.
