How Does a Backwash Filter Work

JX Filtration July 21, 2025 Automatic Backwash Filter

An automatic backwash filter is a device capable of automatically cleaning the filter screen while ensuring continuous filtration. When the accumulation of impurities causes the pressure differential between the inlet and outlet to reach or exceed a preset value, or after a preset time interval, the control system automatically initiates the cleaning cycle.

Key Advantages:

Zero Downtime Maintenance: The backwash process is performed without interrupting system operation, ensuring continuous performance.
Low Energy Consumption: Backwash water consumption accounts for only 0.08%–1% of the filtered water volume.
Flexible Installation: Suitable for vertical, horizontal, or inverted installation.

Main Technical Specifications:

Flow rate: 80–100 m³/h
Operating pressure: 0.6–1 MPa
Sand filter cleaning duration: 300 seconds
Filtration precision: 10–3000 μm

Cost-Effectiveness and Efficiency:
The implementation of this product can significantly enhance the quality of irrigation systems and extend the service life of water-saving irrigation infrastructure. When used in conjunction with integrated water and fertilizer technologies, crop yields can be significantly increased, while achieving notable savings in water, fertilizer, and labor.

Market Application Prospects:
This product is widely applicable for treating river water, reservoir water, pond water, lake water, etc. It is especially suitable for water with organic content exceeding 10 mg/L, making it ideal for drip irrigation, sprinkler irrigation, and micro-spray systems. The market demand and application potential are considerable.