What is 3-Free direct filtration technology?

Release time:

2026-04-11

The "3-Free" direct filtration is a disruptive technology: it achieves efficient and permanent solid-liquid separation in municipal and industrial wastewater without requiring power supply

What is the "3-Free" Direct filtration technology?

The "3-Free" direct filtration is a disruptive technology: it achieves efficient and permanent solid-liquid separation in municipal and industrial wastewater without requiring power supply, lifetime consumable replacement-free operation, or selective inlet conditions, thereby revolutionizing traditional water treatment technologies.

Technical Analysis:

1. No-Electricity Operation

· Meaning: During water production (filtration), external power equipment such as pumps are not required to provide pressure. It typically relies on the potential energy of wastewater itself (e.g., water level difference, gravity) or the osmotic pressure formed within the system as the driving force.

· Implementation method: ASSFBR operates through liquid level differential.

2. No-Consumables Replacement (no secondary contamination)

· Meaning: The core filtration unit of the system is not a traditional "consumable material" in the conventional sense. It possesses self-cleaning, anti-contamination, and long-term stable operational capabilities, eliminating the need for frequent replacement throughout its entire lifecycle as required for PP cotton or activated carbon.

· Implementation method: Achieved through specialized materials and process design (e.g., backwashing). The annual filter material consumption rate within the filter cartridge is approximately 1%, requiring replacement only every 2-3 years for long-term use.

3. Non-Selective Inflow

· Meaning: This represents one of the most core advantages of the technology. It refers to the system's extremely high tolerance for influent water quality, enabling the treatment of wastewater with complex compositions, significant fluctuations, high levels of suspended solids, colloids, or oils without requiring complex pretreatment adjustments.

· Implementation method: Relying on its unique flow channel design, strong anti-fouling capability, and efficient physical/chemical cleaning mechanism, it can directly withstand harsh water quality conditions.

In conclusion, the "3-Free" Direct Filtration Technology is an advanced filtration technology designed to achieve minimal maintenance requirements, ultra-low energy consumption, and exceptional adaptability.

The Principle of 3-Free direct filtration technology

None