Philippines + Sand Filter + Solid-liquid Separation

October 30, 2024 Philippines

Product: Sand Filter

Country: Philippines

Application: Solid-liquid Separation

Sand filter is a device that uses quartz sand and other filter media for solid-liquid separation. It is mainly composed of a filter container, a filter medium (quartz sand), a support layer, a water distribution system, and a backwash system.
The core part of the sand filter is the filter medium - quartz sand, whose particle size, uniformity, and arrangement directly affect the filtering effect.

The working principle of the sand filter is based on physical filtration and depth effect. When the liquid to be filtered passes through the sand filter, it is first evenly distributed through the water distribution system, and then slowly penetrates the quartz sand. In this process, suspended matter, particulate impurities, and some organic matter in the liquid are intercepted by the quartz sand and adsorbed on its surface to form a thin filter membrane. As the filtration proceeds, this filter membrane gradually thickens, and the filtering effect on subsequent liquids gradually increases.

The filtering effect of the sand filter benefits from the dual effects of depth effect and physical filtration. The depth effect refers to the fact that when the liquid passes through the quartz sand layer, due to the large pores and specific surface area between the quartz sand particles, the impurities in the liquid have more opportunities to contact and be intercepted by the quartz sand particles. Physical filtration refers to the adsorption and interception of impurities by the filter membrane on the surface of quartz sand.

In order to maintain the continuous filtration performance of the sand filter. The backwash system plays an important role. When the filter membrane thickens to a certain extent, it will hinder the passage of liquid and affect the filtration effect. At this time, the backwash system injects reverse water flow or gas into the sand filter to wash away the impurities on the filter membrane and discharge them out of the device, thereby restoring the filtration performance of the quartz sand.

The sand filter plays an important role in the field of solid-liquid separation with its unique filtration principle and efficient processing capacity.

After-Sale Services

Quality guarantee: 12 months after the equipment having been operated.
Satisfied after-sell service: free maintenance and inspection.
Detailed installation instructions, CAD drawing and product qualification certificate.