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Self-flow suspended-particle-media biological filtration reactor (the “3-Free direct filtration technology): Application scenarios include post-biological treatment sludge–water separation (replacing secondary sedimentation tanks and MBR systems) and denitrification sludge–water separation. The self-flow suspended-particle-media biological filtration reactor is also known as a denitrification biological filtration reactor, commonly referred to as the “3-Free-No” direct filtration unit (Patent: ZL2018 20780799.4).
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.
AAO-ADF System (AAO-Coupled Autotrophic Direct Filtration System) | Patented Product
A New Paradigm for Rural and Township Wastewater Treatment: the AAO–Self‑Autotrophic Direct Filtration (AAO‑ADF) System This system deeply integrates the well‑established AAO biological treatment process with the revolutionary “self‑autotrophic direct filtration” unit, aiming to provide an efficient, stable, and virtually maintenance‑free distributed wastewater treatment solution for rural and township areas. Typical application scenarios include: – Domestic wastewater treatment in rural residential settlements and natural villages – Township communities, tourist towns, and clusters of guesthouses – Isolated facilities such as schools, military barracks, and highway service areas – Upgrading and expanding capacity of conventional wastewater treatment plants
TUFBR™-IFB Integrated Direct-Filtration Tank (Industrial Grade) | Patented Product
The TUFBR™-IFB Integrated Direct-Filtration Basin (Industrial Grade) is primarily used for the pretreatment of industrial wastewater. With its ultra-simplified operation and maintenance, extremely low costs, and exceptional adaptability, it transforms wastewater pretreatment from a traditional “passive acceptance” approach to a “proactive control” strategy, thereby laying a solid foundation at the source for the stable, efficient, and economical operation of the entire wastewater treatment system. Typical application scenarios include the pretreatment of various complex industrial wastewaters for SS reduction and oil removal, among other functions.
The ICDF-SPWRI oilfield produced-water reinjection coagulation–direct filtration integrated skid-mounted treatment system is a highly efficient, energy-saving, all-in-one treatment unit specifically designed for the reinjection of produced water from oilfields. Its core process integrates coagulation with the innovative “3-Free direct filtration” technology, enabling thorough purification of complex-produced-water streams within a single skid-mounted module.
TUFBR™-SSEF Self-Sustaining Electrostatic Filtration System | Patented Product
Typical application scenarios: · Reuse treatment of produced water in oil production · On-site reinjection treatment of fracturing flowback fluid · Reuse treatment of coal slurry water in coal chemical industries and thermal power plants, among others. Maintaining the Electrochemical Direct Filtration (SSEF) system: This system innovatively integrates highly efficient electrochemical pretreatment technology with the eco-friendly “autotrophic filtration” concept, aiming to provide customers with a state-of-the-art flocculation-based direct filtration solution that delivers outstanding effluent quality, extremely low energy consumption, and virtually maintenance-free operation.
IASF System (Integrated Anaerobic Direct Filtration Tower) | Patented Product
Through its ingenious internal structural design, the IASF System seamlessly integrates the filtration unit with the biochemical reaction unit, achieving a synergistic effect where “1 + 1 > 2.” It offers significant advantages in energy conservation, resource reduction, emission mitigation, and simplified operation and maintenance, making it particularly well-suited for deployment in medium- to high-concentration organic wastewater treatment projects where land is scarce and there is a strong emphasis on low operating costs and high efficiency.
MIWPS Military-Grade Integrated On-Vehicle Water Purification System | Patented Product
Securing the Water Source: The Vanguard of Field Operations | Military-Grade, Vehicle-Integrated Water Purification System Tailored for field units and mobile missions, this strategic water purification solution combines rapid deployment, rugged reliability, ultra-pure water quality, and autonomous self-sufficiency. The system is highly integrated into an off-road chassis, enabling full-terrain mobility with the unit and allowing immediate operation upon arrival at any river, stream, lake, or pond.
ICBDF (Ceramic Granule-Based Integrated Direct-Flow Filter) | Patented Product
Full English name: Integrated Ceramsite-Based Denitrifying Filter. It efficiently integrates physical filtration, nitrification, and denitrification into a single system, thereby achieving the core objectives of “high-efficiency nitrogen removal, energy conservation and resource efficiency, and simple maintenance.” This technology represents a highly promising and attractive solution for addressing nitrate pollution in aquatic environments, particularly well-suited for intensive aquaculture, landscape water bodies, and decentralized wastewater treatment for nitrogen removal.
IMWPS (Integrated Multi-Functional Water Purification Skid-Mounted Unit) | Patented Product
This equipment integrates coagulation, innovative 3-Free direct filtration, ultrafiltration, and reverse osmosis into a single skid-mounted unit. Its key features include high integration, low operational energy consumption, strong adaptability, and virtually maintenance-free operation, enabling it to stably produce high-quality water directly from complex raw water sources. It is primarily used in applications with stringent requirements for deployment speed, operating costs, and water quality, such as emergency disaster relief water supply, military field water supply, and industrial wastewater reuse.
CC-GDF System (“Scavenger” No. 1 Direct Waste Liquid Filtration System) | Patented Product
The “Scavenger” CC-GDF (Coagulation-Conditioning & Gravity Direct Filtration) high-concentration wastewater direct-filtration pretreatment system is primarily used for the pretreatment of highly concentrated, challenging wastewater, significantly simplifying the process, reducing costs, and minimizing secondary pollution. Application areas include: · Leachate from waste transfer stations/incinerators · Wastewater from food-waste treatment centers · Other pretreatment applications for high-suspended-solids, high-concentration organic wastewater
Multi-media Filter | Other Products
The industrial multi-media filter is a highly efficient and reliable liquid pretreatment device, widely used in industrial water supply, recirculating water systems, and wastewater treatment. Its core feature is the use of two or more filtration media with different particle sizes—such as anthracite, quartz sand, and magnetite—to create a graded filtration bed that is coarser at the top and finer at the bottom. This design effectively traps suspended solids, silt, colloids, algae, and high-molecular-weight organic compounds in the water through stepwise interception.
Solving the planet’s environmental challenges with eco-friendly equipment.
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