The quartz sand filter (formally known as a shallow medium filter) is a pressure-driven physical filtration device that uses quartz sand as the core filter medium. It is widely applied in the front-end pretreatment of water treatment systems, efficiently removing suspended solids, sediment, colloids, rust, and some microorganisms from water. It reduces water turbidity and provides stable, qualified influent water quality for subsequent processes such as reverse osmosis and ion exchange.
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+86 15936525232Filtration Phase: Raw water flows downward through the filter bed under pressure. Large particulate impurities are trapped by the fine sand on the surface layer, while tiny particles are captured in the pores of the deep filter media through physical adsorption and sedimentation. The filter layer automatically forms a gradient structure ("loose at the top, dense at the bottom"), adapting to different influent conditions for stable filtration performance.
Backwashing Phase: When the filter media is saturated with trapped impurities and the pressure difference between the inlet and outlet exceeds the standard, the device automatically triggers the backwashing procedure. Water flows upward in the reverse direction to flush the filter bed, discharging the impurities trapped in the filter media pores along with wastewater. This restores the filtration performance of the media, enabling cyclic use with low water consumption.
Rinsing Phase: After backwashing, the filter media is allowed to settle and stratify naturally for a short period. Forward water flow is then used to rinse the filter, removing residual turbid water inside the tank. The device returns to its normal filtration state, achieving fully automatic cyclic operation.
Tank Body: Carbon steel / stainless steel material, optional anti-corrosion coating (e.g., epoxy paint), suitable for industrial/municipal scenarios;Resistant to acid and alkali corrosion, high pressure resistance, long service life
Filter Media Layer:Quartz sand filled in a three-layer graded configuration ("coarse - medium - fine") to prevent water flow short-circuiting High filtration precision, impurity removal efficiency of over 95%
Control System：Optional automatic / manual control valves, equipped with differential pressure monitoring instruments No frequent manual operation required, stable and reliable operation
Water Distribution / Collection System Uniform water distribution at the top and anti-loss water collection device at the bottom Prevents filter media caking, ensures uniform filtration and backwashing
Pure physical purification, no chemical additives required, no secondary pollution
Simple structure for easy maintenance, low filter media replacement cost, and low energy consumption
Customizable fully automatic operation solutions, suitable for 24-hour continuous operation scenarios
Wide applicable pH range (2-13), oxidation and acid/alkali resistant, compatible with various water qualities
Industrial Water Treatment: Pretreatment of production water in electronics, chemical, and pharmaceutical industries; purification of circulating cooling water in power plants
Municipal Water Supply: Turbidity removal of raw water in waterworks; purification of groundwater / well water
Wastewater Treatment: Advanced filtration in sewage plants; pretreatment for reclaimed water reuse
Other Fields: Swimming pool circulating water, landscape water purification, agricultural irrigation water pretreatment; protects drip irrigation / reverse osmosis equipment from clogging
Tank Material: Carbon steel with anti-corrosion treatment, stainless steel (304/316L) available
Control Mode: Customizable manual / fully automatic (PLC + pneumatic valve)
Filter Media Combination: Can be combined with anthracite, activated carbon, manganese sand, etc., to form a multi-media filter, expanding functions such as iron and manganese removal, residual chlorine removal
Specification Parameters: Tank size and filter media gradation can be customized according to water treatment capacity and influent water quality
| Model | Tank specifications | Import and export specifications | Maximum flow rate (t/h) | Pressure (kg) | Quartz sand filter material (tons) |
| LF-SYS500 | φ500*2150 | DN50 | 2 | 10 | 0.35 |
| LF-SYS600 | φ600*2250 | DN50 | 3 | 10 | 0.5 |
| LF-SYS800 | φ800*2450 | DN65 | 5 | 10 | 0.8 |
| LF-SYS1000 | φ1000*2550 | DN65 | 8 | 10 | 1.3 |
| LF-SYS1200 | φ1200*2650 | DN65 | 12 | 10 | 1.9 |
| LF-SYS1500 | φ1500*2850 | DN80 | 18 | 10 | 2.9 |
| LF-SYS1600 | φ1600*2950 | DN80 | 20 | 10 | 3.5 |
| LF-SYS1800 | φ1800*3050 | DN100 | 25 | 10 | 4.3 |
| LF-SYS2000 | φ2000*3150 | DN100 | 30 | 10 | 5.6 |
| LF-SYS2200 | φ2200*3300 | DN125 | 40 | 10 | 6.5 |
| LF-SYS2400 | φ2400*3400 | DN125 | 50 | 10 | 7.8 |
| LF-SYS2500 | φ2500*3450 | DN125 | 60 | 10 | 8.75 |
| LF-SYS2600 | φ2600*3450 | DN150 | 70 | 10 | 9.3 |
| LF-SYS2800 | φ2800*3600 | DN150 | 80 | 10 | 11.5 |
| LF-SYS3000 | φ3000*3900 | DN219 | 100 | 10 | 12.2 |
| LF-SYS3200 | φ3200*4500 | DN219 | 120 | 10 | 14 |
| LF-SYS3400 | φ3400*4600 | DN250 | 150 | 10 | 15.75 |
| LF-SYS3600 | φ3600*4650 | DN250 | 180 | 10 | 17.5 |
