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Reverse osmosis (RO) membranes are the core components of RO systems, with a pore size of only 0.1-1 nanometer, requiring extremely high feed water quality (most suspended solids, colloids, and particulate impurities must be removed). Large-flow filters, leveraging their structural and performance advantages, serve as a critical link in RO system pretreatment, directly determining the operational stability and service life of RO membranes. Below are the key core knowledge points:

High flow filter cartridge Key Parameters for Selection

[Moscow, Russia, September 9-11, 2025] — SENJIA recently made a remarkable appearance at the 20th International exhibition of technologies and equipment for municipal and industrial water treatment (EcwaTech), showcasing its full range of industrial-grade water filter cartridges and solutions.

Qingdao, [July 2–4] — The 2025 Qingdao International Water Conference & Expo, a three-day global flagship event for the water treatment industry, concluded successfully with all objectives accomplished. Under the theme "Water—Source of Life, Foundation of Development," the expo established a high-level, international, and professional platform for exchange and collaboration.

After the security filter is used for a period of time, the water quality treated will vary. At this time, the filter element will be blocked, the replacement of the filter element should be based on the pressure difference before and after the filter, when the pressure difference is greater than 0.03MPa should be considered replacement.

Choosing the right filter element is the key to ensuring the normal operation of the security filter and providing clean water. It is not only necessary to understand the quality of the water source and the type of pollutants, but also to understand the flow rate and size, which can be selected according to different requirements of different sizes, precision and different brands.

The main filter materials are: stainless steel wire mesh, sintered mesh, polypropylene, hydrophobic polytetrafluoroethylene, hydrophilic polytetrafluoroethylene, polyether sulfone, nylon, etc. Most of the raw materials are imported from abroad.

In general wastewater treatment, whether it is seawater desalination, industrial wastewater and water reuse and reverse osmosis system pretreatment will use the filter filter element, then the filter element has a large flow filter element (pall Pall large flow filter, parker Parker large flow filter, 3m large flow filter), microporous folding filter, PP cotton filter, wire wound filter and other forms. Do not know how to choose, that from the system design, flow and pressure to judge.