Reverse osmosis works
1, osmotic and osmotic pressure penetration phenomenon is common in nature, such as a cucumber into the salt water, cucumber will become smaller due to loss of water. The process of water molecules entering the brine solution in the cucumber is the osmosis process. If a water-only membrane can be used to partition a pool into two parts, respectively, on both sides of the diaphragm were injected with pure water and brine to the same height. Over a period of time can be found pure water level decreased, and salt water level increased. The phenomenon of migrating water molecules into the brine through this membrane is called infiltration. Salt water level is not endless, to a certain height will reach a balance point. At this time the difference between the two sides of the diaphragm on behalf of the pressure is called osmotic pressure. The osmotic pressure is directly related to the concentration of brine.
2, reverse osmosis phenomenon and reverse osmosis water purification technology in the above device to achieve balance, if the brine side of the liquid surface to exert a certain pressure, this time, the water molecules will be from the brine to the pure water side of the migration. Liquid agent molecules under pressure from the dilute solution to the concentrated solution of the process of migration This phenomenon is called reverse osmosis phenomenon. If brine is added to one end of the above facility and a pressure is applied at that end beyond the osmotic pressure of the brine, we can obtain pure water at the other end. This is the principle of reverse osmosis water. Reverse osmosis facilities to produce pure water is the key to two, one is a selective membrane, we call the membrane, the second is a certain pressure. In short, the reverse osmosis membrane has a large number of holes, the size of these holes and the size of water molecules, due to bacteria, viruses, most of the organic pollutants and hydrated ions are much larger than the water molecules, and therefore not through The reverse osmosis membrane is separated from the aqueous phase through the reverse osmosis membrane. Among the various impurities in the water, dissolved salts are the most difficult to remove. Therefore, often according to the level of desalination to determine the reverse osmosis water purification effect. The level of reverse osmosis desalination depends mainly on the selectivity of reverse osmosis membrane. At present, the higher selectivity of reverse osmosis membrane element desalination rate can be as high as 99.7%
RO reverse osmosis equipment characteristics
Because of its no heating, less energy consumption, continuous and stable operation process, equipment is small, simple operation, adaptability, the environment does not produce pollution and gradually replace the traditional ion exchange process. I developed the LTLD series of reverse osmosis device is a dedicated RO technology design, key components, equipment imported brand name brand products, not only advanced technology, and product quality is reliable, scalable, reasonable structure of small footprint, water utilization And product life to achieve a good balance, low energy consumption, automatic operation, operation and maintenance is simple.
Causes and Countermeasures of RO Failure
Increased ΔP or reduced water production
1, SiO2 precipitation in the RO membrane rinse RO membrane, into the water quality inspection.
2, the water pressure loss is too large or.
3, the water pressure is too low, keep the temperature.
4, replace the membrane tube.
△ P increased and water production decreased at the same time
1, the water conductivity of ultra-high regulation pressure, check the pre-treatment.
2, into the flow rate of low flow into the flow regulation.
3, the return flow rate is too high to adjust the return flow rate.
△ production rate and removal rate decreased at the same time, the damage rate decreased at the same time, the removal rate and pressure loss and water production decreased
1, PH / temperature exceeds the design value or long bacteria to adjust PH / temperature or sterilization.
2,0-ring damaged replacement 0-ring.
3, membrane connection tube damage Replace the membrane connection tube.
4, membrane tube damage to replace the membrane tube.
△ sudden increase in water production
1, the water temperature is too high to keep the temperature 25 ºC.
2, membrane tube hole replacement membrane tube.
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