1, the difference in appearance between single-stage reverse osmosis equipment and bipolar reverse osmosis equipment. Single-stage reverse osmosis equipment is equipped with a vertical pump, while bipolar reverse osmosis equipment is equipped with two vertical pumps.
2, the difference in system, single-stage reverse osmosis equipment is a device to remove some substances in water through a permeable membrane separation technology.
Polaroid reverse osmosis equipment means that raw water is filtered twice by RO reverse osmosis membrane, so as to reach the standard of higher desalination rate. When the quality of raw water is close to that of tap water, the conductivity of water can reach 10μs/cm by using two-stage reverse osmosis technology. General industries or other industries will use single-stage reverse osmosis equipment when the water quality is not too high, and two-stage reverse osmosis equipment will be used when the water quality is strict.
3. Single-stage and double-stage reverse osmosis equipment are mainly distinguished from the process flow.
Single-stage reverse osmosis equipment is also called first-stage reverse osmosis equipment, that is, raw water passes through pretreatment system and precision filter and is sent to reverse osmosis device by high pressure pump to directly produce product water, which is called single-stage reverse osmosis.
Two-stage reverse osmosis equipment is also called two-stage reverse osmosis. The raw water is pressurized and sent to the pretreatment system for coarse filtration, then filtered by the precision filter, and then pressurized by the first-stage high-pressure pump and sent to the first-stage reverse osmosis system. The water produced by this system is pressurized by the secondary high-pressure pump and sent to the secondary reverse osmosis system to produce product water, which is called secondary reverse osmosis.