Sand and activated carbon filters are pressure filtration systems used for the removal of turbidity, suspended solids, color, organic matter and chlorine in water and wastewater treatment processes. The filtration process is based on the retention of physical and chemical pollutants by passing water through special filling layers.
Filter systems produced by Pilsan Construction are manufactured with carbon steel, stainless steel, FRP (fiberglass reinforced polyester) and HDPE (high density polyethylene) materials and can be adapted to all types of water characteristics and operating conditions. All models are designed specifically for the project with automatic or manual valve, single or multiple unit configurations.
The system contains filtration layers of certain thickness inside a pressure vessel. Raw water enters the filter bed from the top of the tank and filters downward through the porous filling layer. During this time, suspended solids, particles causing turbidity and organic compounds in the water are retained between the filling material.
When the filtration time expires or differential pressure increase is detected, the system automatically switches to backwash mode. During backwashing, the flow direction is reversed; accumulated pollutants in the filter bed are discharged.
Provides physical treatment (removal of solid particles, sediment, turbidity).
Provides removal of color, odor, chlorine, phenol and organic matter through chemical adsorption.
These two filters are usually used sequentially (in series) to achieve both physical and chemical treatment together.
Epoxy internal coating or rubber-lined protection
High pressure resistance (up to 10 bar)
Suitable for large flows and industrial systems
Corrosion resistant, suitable for hygienic applications
Preferred in food, drinking water and process water systems
Lightweight, portable and chemical resistant structure
Used in small and medium capacity systems with automatic valves
Completely corrosion-free, long-lasting and environmentally friendly
Resistant to seawater, salt water and aggressive chemicals
Thermofusion welded vessel, resistance up to 6–10 bar pressure
Easily portable in the field, maintenance-free structure
Filter filling structure is determined according to the desired treatment purpose:
| Filter Type | Filling Material | Layer Thickness | Filtration Range |
|---|---|---|---|
| Sand Filter | Quartz sand, anthracite, garnet | 800–1200 mm | 10–25 microns |
| Activated Carbon Filter | Granular activated carbon (GAC), quartz support layer | 1000–1200 mm | Organic matter / color / odor removal |
| Multimedia Filter | Anthracite + Quartz + Garnet multi-layer | 1000 mm | 5–20 microns |
Providing physical and chemical filtration in a single system
Low energy consumption, quiet operation
Long-lasting material options: steel, stainless, FRP and HDPE
Minimum maintenance requirement with automatic backwash system
Corrosion and chemical resistant structure
Modular and compact design: adaptation to high flows by parallel connection
Hygienic and food suitability: stainless and HDPE models
Custom production possibility according to field conditions: horizontal, vertical or horizontal cylindrical design
Municipal drinking water and treatment plants
Industrial process water preparation systems
Wastewater treatment effluent filtration
Food, textile, metal, petrochemical facilities
Seawater pre-filtration (HDPE models)
Pool water filtration systems
Recovery and reuse systems
Sand and activated carbon filters are one of the most reliable solutions for improving water quality at the final stage in treatment plants. Filter systems produced by PİLSAN Construction fully adapt to different water characteristics, operating pressures and process requirements with steel, stainless steel, FRP and HDPE material options. Thanks to their long-lasting structure, high filtration efficiency, automatic backwash feature and modular design, our filters are preferred in both industrial and municipal scale projects. Our sand and activated carbon filters are among the reliable, sustainable and high-performance equipment of modern water treatment technologies with project-based custom design capability, durable material options and automation integration.