Tubular Ultrafiltration Membrane Assembly

    I. What is tubular ultrafiltration membrane assembly?

Tubular ultrafiltration membrane module is a water treatment device that uses ultrafiltration membrane technology to remove suspended matter, bacteria, viruses and macromolecules in water. Similar to column and curtain ultrafiltration membrane modules, tubular ultrafiltration membrane modules are usually composed of multiple membrane tubes, and water flows in the membrane tubes for filtration.

    II. What are the characteristics of tubular ultrafiltration membrane components?

● The ultrafiltration membrane is internal pressure composite membrane that performs cross-flow filtration in cross-flow manner. The filter layer is PVDF or PPSU, and the membrane tube is made of modified HDPE. Wastewater flows into the membrane tube through a circulation pump and circulates at high speed. Under pressure, soluble salts and water molecules pass through the membrane and flow out from the water production side, while insoluble macromolecules and particles are retained by the membrane and flow back to the concentration tank. This process is continuous circulation and concentration.

● The membrane has high filtration flux, and the water permeability per unit area can reach 900L/(m2·h) -1200L/ (m2·h).

● The water flow rate in the membrane tube is 4-6m/s, which is three times that of similar tubular microfiltration membranes. Water continuously flushes the membrane surface at high flow rate, which can reduce the retention of pollutants on the membrane surface, and reduce concentration polarization. The membrane can withstand long-term repeated cleaning by strong acids, strong alkalis and strong oxidants, and its service life reaches 5-10 years.

● It can withstand repeated cleaning and long-term use in strong acid, strong alkali, high-salt, and high-solvent wastewater. Calculated based on 3.5 hours of cleaning each time, it can withstand repeated cleaning for more than 1260 hours.

● The membrane layer is reinforced on a tough support layer, ensuring the strong anti-pollution ability of the membrane. After it has been contaminated, the filtration flux can be quickly restored 100% through chemical cleaning.

● High filtering accuracy, able to operate for a long time under high temperature.

● Strong resistance to strong oxidants.

III. What are the application fields of tubular ultrafiltration membrane assembly?

· Purification of drinking water: It can be widely used in household and community water purification equipment, it can provide safe and reliable drinking water, especially in areas with poor water sources.

· Treatment of agricultural irrigation water: It can be used to purify irrigation water, remove bacteria and pollutants in the water, ensure the safety of agricultural production, and increase crop yields.

· Treatment of recycled water: It can filter and purify the wastewater generated During the industrial production process to achieve water reuse and reduce water resource waste.