How many RO elements are in each ROWPU RO vessel?

In each ROWPU (Reverse Osmosis Water Purification Unit) RO vessel, there are two RO elements. This design is standardized to optimize the purification process and enhance the overall efficiency of the system. By utilizing two elements, the system can achieve a greater freshwater yield and better contaminant removal compared to using a single element. The arrangement allows for parallel processing, which effectively balances the flow and increases the osmotic pressure, contributing to improved water quality.

While one, three, and four elements could seem plausible in different contexts, the specific design efficiency and operational needs of the ROWPU dictate the standard of two elements per vessel to maximize performance while ensuring reliability and maintenance manageability. This configuration has been tested and validated in various field applications, making it the norm for ROWPU units.