Automatic Backwash Filter in the Paper Industry
Automatic backwash filters are crucial in the paper industry for filtering and purifying process water and other fluids. They ensure the smooth operation of production processes by removing impurities and maintaining water quality. Here’s a detailed overview:
Working Principle
- Normal Filtration: Liquid enters the filter, passes through the filter media, and exits as clean water. Impurities are trapped on the surface of the filter media.
- Backwash Process: When impurities accumulate to a certain level, causing a pressure differential, the system automatically initiates the backwash process. The flow direction is reversed or an external water source is used to flush out the impurities from the filter media, restoring its filtering capacity.
Technical Parameters
- Filtration Precision: Typically ranges from 10 to 300 microns, depending on specific requirements.
- Flow Rate: The volume of water processed per unit time, usually measured in cubic meters per hour (m³/h).
- Operating Pressure: The pressure range within which the system operates, affecting filtration performance and equipment longevity.
- Material: Common materials include stainless steel and carbon steel, chosen for their resistance to corrosion and durability in harsh environments.
Applications in the Paper Industry
- Pulp Filtration: Removing impurities from pulp to ensure high-quality paper production and protect processing equipment.
- White Water Recycling: Filtering and recycling white water in paper machines to recover fibers and fillers, reducing resource consumption and costs.
- Cooling Water Treatment: Filtering circulating cooling water to remove suspended solids, preventing scale formation and corrosion in pipelines and equipment.
Performance and Efficiency
- High Filtration Efficiency: Capable of continuous online filtration while maintaining high performance.
- Automated Control: Automatically detects when to initiate backwashing, minimizing manual intervention and ensuring system reliability.
- Low Maintenance Costs: The backwashing process keeps the filter media clean, extending its lifespan and reducing maintenance frequency and costs.
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Grace
Email:grace@filtrationchina.com
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