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Water is distributed evenly through the system and passes through the filter media.
Treated water is collected through underdrain elements, while backwashing ensures uniform reverse flow distribution.
Systems are installed in the upper or lower parts of filters and can have different designs:
• radial (“spider”) systems
• collector systems
• false bottom systems
• nozzle-cap systems
Applications: • mechanical filters
• sorption filters
• ion exchange systems
• water and wastewater treatment systems
Systems are made of corrosion-resistant materials:
• stainless steel
• polymer materials
• composite structures
Materials are selected according to operating conditions and water parameters.
Main parameters depend on filter type and operating conditions.
Key characteristics: • flow capacity — project-specific
• distribution uniformity
• mechanical strength
• compatibility with filter media
