English
Description
This automatic backwash disc filter system is a modular filtration solution built for high-flow irrigation applications. It consists of multiple disc filter units connected in parallel, each containing grooved filter discs that provide three-dimensional depth filtration for particle removal. A helical spiral structure within each unit creates a centrifugal effect during operation, rotating water at high speed to move heavier particles away from disc surfaces before filtration. The system supports continuous operation during cleaning cycles, as each unit backwashes using filtered water from other active units.
Technical Parameters
Item No. | Filter Units (pc) | Inlet/Outlet Size | Very Poor (m³/h) | Poor (m³/h) | General (m³/h) | Clean (m³/h) | Dimensions L×W×H (mm) |
DFS-D201 | 1 | 2" flange (Dn50) | 10 | 18 | 20 | 30 | 180×300×600 |
DFS-D202 | 2 | 3" flange (Dn80) | 15 | 40 | 40 | 80 | 800×100×970 |
DFS-D203 | 3 | 3" flange (Dn80) | 25 | 60 | 60 | 110 | 1100×1100×970 |
DFS-D204 | 4 | 3" flange (Dn80) | 35 | 80 | 80 | 135 | 1300×1100×970 |
DFS-D301 | 1 | 3" flange (Dn80) | 15 | 30 | 40 | 60 | 210×330×800 |
DFS-D302 | 2 | 4" flange (Dn100) | 30 | 60 | 80 | 120 | 600×160×990 |
DFS-D303 | 3 | 4" flange (Dn100) | 45 | 90 | 120 | 180 | 1400×120×1055 |
DFS-D304 | 4 | 6" flange (Dn150) | 70 | 135 | 160 | 240 | 1700×120×1055 |
DFS-D305 | 5 | 6" flange (Dn150) | 90 | 180 | 200 | 300 | 2000×1270×1100 |
DFS-D306 | 6 | 8" flange (Dn200) | 105 | 210 | 240 | 360 | 2300×1270×1100 |
DFS-D307 | 7 | 8" flange (Dn200) | 120 | 240 | 280 | 420 | 2600×1270×1100 |
DFS-D308 | 8 | 8" flange (Dn200) | 135 | 270 | 320 | 480 | Contact sales |
Parameter | Specification |
Filtration Technology | Grooved disc filter elements (three-dimensional depth filtration) |
Filter Element Type | Stacked plastic discs with precision grooves |
Standard Filtration Grades | 75 mesh, 120 mesh, 150 mesh |
System Configuration | Multiple filter units in parallel |
Control Type | Automatic backwash with dedicated controller |
Backwash Initiation Methods | Pressure differential, time setting, manual |
Maximum Working Pressure | 10 Kg/cm² |
Minimum Backwash Pressure | 2.5 Kg/cm² |
Connection Type | Flanged (standard) |
Special Feature | Helical spiral structure for centrifugal effect |
Water Quality Classification | Description | Typical Application |
Very Poor | High sediment, algae, organic debris | Surface water from rivers, ponds, canals |
Poor | Moderate sediment, some organic content | Reservoir water, treated surface water |
General | Light sediment, minimal organic content | Well water, municipal supply |
Clean | Very low suspended solids | Pre-filtered water, groundwater |
Custom Option | Details |
Flow specifications | Other flow rates available upon request |
Filtration grades | Mesh sizes from 40-400 mesh available |
Number of units | Custom configurations beyond standard range |
Connection types | Threaded or custom flange options |
Material options | Alternative materials for special applications |
Product Features
Each system uses standard parallel-connected filter units, with configurations ranging from 1 to 8 units. Flow capacities range from 10 m³/h to 480 m³/h, matching specific project requirements. Additional units can be added after initial installation to increase capacity, provided the manifold and controller are sized for expansion, eliminating the need to replace existing equipment.
The integrated spiral structure generates centrifugal force during filtration, separating heavier inorganic particles from the water stream before they contact the disc stack. This pre-separation reduces the load on filter discs and extends intervals between backwash cycles.
Stacked plastic discs with precision grooves form the core filtration elements, trapping particles throughout their depth rather than only on the surface. This design accommodates both organic contaminants (algae, seeds) and inorganic contaminants (sand, sediment).
A dedicated controller manages filtration, backwash cleaning, and sewerage functions. Backwash cycles can be initiated by pressure differential sensing, preset time intervals, or manual control. The controller coordinates cleaning sequences across all units to maintain uninterrupted water supply.
The system is engineered for a maximum working pressure of 10 Kg/cm², supporting a range of agricultural and industrial applications. A minimum backwash pressure of 2.5 Kg/cm² is required for effective cleaning.
Product Uses
This system is used in large agricultural irrigation projects covering hundreds of hectares, surface water intake from rivers and canals, multi-zone greenhouse complexes, golf course and landscape irrigation, industrial water pre-filtration, municipal water supply, and remote agricultural installations where manual maintenance is impractical.
Prepare a level concrete foundation to support system weight, with adequate space for maintenance access.
Position the system and ensure the manifold is horizontal using a level.
Connect inlet and outlet pipes to flanged connections with proper gaskets, tightening bolts evenly in a cross pattern.
Install the backwash drain line with no restrictions, and connect power and pressure sensors to the controller.
Slowly pressurize the system to check for leaks and verify controller operation.
Weekly: Check pressure differential readings and inspect drain lines for blockages.
Monthly: Test manual backwash function and inspect pressure sensor connections.
Annual: Inspect disc stacks for wear, clean discs if biological fouling is present, and replace seals and O-rings as needed.
FAQ
During normal operation, water flows through all parallel filter units, with grooved discs capturing suspended particles. When backwash is initiated, the controller isolates one unit at a time, and filtered water from other active units flows in reverse through the isolated unit. The disc stack decompresses and rotates, releasing captured particles which exit through the drain line. The cleaned unit then returns to service.
Standard systems include 1 to 8 filter units, with flow rates ranging from 10 m³/h to 480 m³/h depending on water quality. Custom configurations are available upon request.
The system handles water quality ranging from very poor (high sediment and algae) to clean sources. Flow rates vary by water quality classification, as shown in the system configurations table.
Yes, additional filter units can be added to increase flow capacity, provided the manifold and controller are sized to support expansion during initial installation.
For custom configurations or additional technical details, contact our sales team.
