DTRO (Disk Tube Reverse Osmosis) and STRO (Spiral Tube Reverse Ososis) are both reverse osmosis technologies, but they have some differences in membrane composition and working principle.
Membrane composition:
DTRO (Disk Tube Reverse Osmosis) uses disc-shaped thin-film tubes (usually flat or disc shaped) that are arranged on a rotating disc.
STRO (Spiral Tube Reverse Osmosis) uses spiral-shaped membrane tubes that are rolled into a spiral shape, similar to the structure of a spiral nut or solenoid.
How it works:
DTRO works by using a rotating disc that applies pressure to the membrane tube to forcibly separate the moisture from the contaminant. These pipes rotate on a disc to help improve processing efficiency.
The working principle of the STRO involves passing the effluent through the inside of a spiral membrane tube, and under high pressure, the water is filtered through a semi-permeable membrane to produce pure water. The design of the spiral tube helps to increase the surface area of the membrane and improve processing efficiency.
Application areas and characteristics:
DTRO is relatively new and is typically used to treat wastewater containing particulate matter and highly concentrated solutions, such as industrial wastewater or wastewater containing suspended solids, as it is designed to better handle wastewater with high solids content.
STRO is more common and is commonly used in seawater desalination, drinking water treatment, household reverse osmosis filters, etc., and is suitable for general reverse osmosis treatment needs.
While both are reverse osmosis technologies, their different designs and application scenarios make them different in terms of treating different types of wastewater or water purification. The choice of DTRO or STRO depends on the characteristics of the wastewater, the quality of the water to be treated, the capacity to be treated, and the specific requirements of the industry.