PVDF hollow fiber ultrafiltration membrane manufacturer in stock

PVDF hollow fiber ultrafiltration membrane manufacturer in stockThe operation must meet the following conditions:

(1) Water temperature: The recommended operating temperature for the membrane tank is 10-40 ° C. Temperatures above 40 ° C can have adverse effects on membrane use or lifespan, while temperatures below 10 ° C can result in a significant decrease in membrane flux;

(2) Pre processing requirements: It is recommended to use three grids, D1 grid, 15-20mm (grid gap), second grid, 3-5mm (grid gap or mesh aperture), and third grid, 0.5-1.0mm (mesh aperture).

The grille removes large debris to protect the film stack from damage; At the same time, an aeration sedimentation tank is required to prevent hard particles from entering the membrane tank and causing damage to the membrane stack; The membrane system requires an inlet oil content of ≤ 20mg/L for animal and vegetable oils, and ≤ 5mg/L for mineral and vegetable oils. If the inlet oil content exceeds this range, an oil removal device needs to be added to avoid contamination of the hollow fiber ultrafiltration membrane;

(3) Transmembrane pressure difference TMP (TMP=pump stop pressure - pump running pressure): 0~60KPa, it is recommended to perform restorative cleaning when approaching or reaching 60KPa;

(4) Filtering/stopping time: The filtering cycle is generally 10 minutes, which means filtering for 8 minutes and stopping for 2 minutes (the above is only a recommended condition, not limited to this);

(5) The filtration membrane flux cannot exceed the design flux during operation. Excessive operating flux will accelerate membrane fouling and shorten the service life of the membrane stack;

(6) Aeration intensity: The conventional design range is 60~120Nm/m2 ● h. For ordinary domestic sewage and municipal sewage, the recommended aeration intensity is designed at 100Nm */m2 ● h. Aeration intensity refers to the projected area of a unit membrane element cross-section Insufficient aeration volume and intensity can easily contaminate the membrane components; Excessive aeration intensity may shorten the service life of the membrane stack. The aeration intensity is directly related to MLSS, and the higher the MLSS, the higher the aeration intensity should be selected.

PVDF hollow fiber ultrafiltration membrane manufacturer in stockThe application fields are very extensive, including but not limited to:

Advanced treatment of municipal sewage: used to improve the treatment efficiency of municipal sewage, so that the effluent quality meets higher discharge standards or reuse standards.

Industrial wastewater regeneration treatment: In the wastewater treatment of industries such as electricity, steel, petrochemicals, textiles, and food, the regeneration and utilization of wastewater can be achieved to reduce production costs.

Pre treatment of seawater desalination: Removing suspended solids, organic matter, microorganisms and other impurities from seawater to provide high-quality inlet water quality for seawater desalination systems.

Drinking water safety guarantee: In drinking water treatment, harmful substances such as pollutants and microorganisms are removed from the water source to ensure the safety of drinking water quality.