TUFBR™-S3F Integrated 3-Free Direct Filtration Unit (Commercial Grade) | Patented Product
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  • TUFBR™-S3F Integrated 3-Free Direct Filtration Unit (Commercial Grade) | Patented Product
  • Product Description
  • Product Introduction

    Equipment Name: Integrated ‘3-Free’ Direct Filtration Tank

    English Name: Small 3-Free Direct Filtration System (S3F System)

    The Mefit TUFBR™-S3F Direct Filtration Unit (also known as the “3-Free” direct filtration unit) is a groundbreaking, integrated water treatment system. It combines physicochemical conditioning, sludge–water separation, and deep-bed filtration into a single compact unit. At its core is a proprietary self-flowing suspended-media sludge–water separation filter element, paired with a dual-settling-zone design, which seamlessly integrates the stability of conventional sedimentation tanks with the high efficiency of filtration equipment. Thanks to its unique flow-path design and intelligent recirculating cleaning technology, this system can directly and efficiently treat a wide range of high-turbidity surface waters and complex industrial wastewaters, while replacing air flotation units, primary clarifiers, and secondary clarifiers in traditional systems.

    Process Flow

    Equipment Structure

    As shown in the figure, the direct-filter tank is an open-type vessel with filter elements arranged symmetrically inside. The standard configuration is a 6×2 arrangement, with overall dimensions of approximately 1.5 m × 3 m × 3.5 m; the number and arrangement of filter elements can be adjusted according to actual site conditions. The bottom of the tank features a conical sludge-collection zone. Like the direct-filter unit, it is equipped with a dedicated cleaning system that includes a cleaning tank, a cleaning pump, and other components.

    Advantages and Features

    Intensive and efficient: significantly reduced footprint and high system integration.

    Economical and reliable: ultra-low operating costs, fully automated operation, and consistently excellent effluent quality.

    Outstanding performance: Stable suspended solids (SS) removal rate of ≥97%, resulting in clear effluent.

    Easy maintenance: ultra-low backwash water consumption, highly fouling-resistant filter elements, and no need for lifetime replacement.

    Model/Specification

    Robust Corrosion-Resistant Design: The carbon steel main structure, combined with specialized anti-corrosion treatment on water-contact components, ensures long-term durability of the equipment.

    Efficient and energy-saving operation: Distinguishes between backwash mode (high power) and routine operation mode (low power), resulting in low actual energy consumption and cost-effective operating expenses.

    Flexible Custom Solutions: To meet the diverse needs of different projects, we offer a range of customized services for non-standard water volumes and materials.

    Product Display Images

TUFBR™-S3F Integrated 3-Free Direct Filtration Unit (Commercial Grade) | Patented Product

The Mefit TUFBR™-S3F Direct Filtration Unit (also known as the “3-Free” Direct Filtration Unit) is a groundbreaking, integrated water treatment system. It combines physicochemical conditioning, sludge–water separation, and deep filtration into a single unit. Its core technology features a proprietary self-flowing suspended-particle-media sludge–water separation filter element paired with a dual-settling-zone design, seamlessly integrating the stability of conventional sedimentation tanks with the high efficiency of filtration equipment. Thanks to its unique flow-path design and intelligent recirculating cleaning technology, this system can directly and efficiently treat various types of high-turbidity surface water and complex industrial wastewater, while replacing air-flotation units, primary sedimentation tanks, and secondary sedimentation tanks in traditional systems.


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  • Product Description
  • Product Introduction

    Equipment Name: Integrated ‘3-Free’ Direct Filtration Tank

    English Name: Small 3-Free Direct Filtration System (S3F System)

    The Mefit TUFBR™-S3F Direct Filtration Unit (also known as the “3-Free” direct filtration unit) is a groundbreaking, integrated water treatment system. It combines physicochemical conditioning, sludge–water separation, and deep-bed filtration into a single compact unit. At its core is a proprietary self-flowing suspended-media sludge–water separation filter element, paired with a dual-settling-zone design, which seamlessly integrates the stability of conventional sedimentation tanks with the high efficiency of filtration equipment. Thanks to its unique flow-path design and intelligent recirculating cleaning technology, this system can directly and efficiently treat a wide range of high-turbidity surface waters and complex industrial wastewaters, while replacing air flotation units, primary clarifiers, and secondary clarifiers in traditional systems.

    Process Flow

    Equipment Structure

    As shown in the figure, the direct-filter tank is an open-type vessel with filter elements arranged symmetrically inside. The standard configuration is a 6×2 arrangement, with overall dimensions of approximately 1.5 m × 3 m × 3.5 m; the number and arrangement of filter elements can be adjusted according to actual site conditions. The bottom of the tank features a conical sludge-collection zone. Like the direct-filter unit, it is equipped with a dedicated cleaning system that includes a cleaning tank, a cleaning pump, and other components.

    Advantages and Features

    Intensive and efficient: significantly reduced footprint and high system integration.

    Economical and reliable: ultra-low operating costs, fully automated operation, and consistently excellent effluent quality.

    Outstanding performance: Stable suspended solids (SS) removal rate of ≥97%, resulting in clear effluent.

    Easy maintenance: ultra-low backwash water consumption, highly fouling-resistant filter elements, and no need for lifetime replacement.

    Model/Specification

    Robust Corrosion-Resistant Design: The carbon steel main structure, combined with specialized anti-corrosion treatment on water-contact components, ensures long-term durability of the equipment.

    Efficient and energy-saving operation: Distinguishes between backwash mode (high power) and routine operation mode (low power), resulting in low actual energy consumption and cost-effective operating expenses.

    Flexible Custom Solutions: To meet the diverse needs of different projects, we offer a range of customized services for non-standard water volumes and materials.

    Product Display Images

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The Mefit TUFBR™-S3F Direct Filtration Unit (also known as the “3-Free” Direct Filtration Unit) is a groundbreaking, integrated water treatment system. It combines physicochemical conditioning, sludge–water separation, and deep filtration into a single unit. Its core technology features a proprietary self-flowing suspended-particle-media sludge–water separation filter element paired with a dual-settling-zone design, seamlessly integrating the stability of conventional sedimentation tanks with the high efficiency of filtration equipment. Thanks to its unique flow-path design and intelligent recirculating cleaning technology, this system can directly and efficiently treat various types of high-turbidity surface water and complex industrial wastewater, while replacing air-flotation units, primary sedimentation tanks, and secondary sedimentation tanks in traditional systems.
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