Chongqing reverse osmosis (RO) water purifier and Chongqing ultrafiltration (UF) water purifier are two mainstream water purification products in Chongqing water purification market. Their water purification efficiency is far higher than that of the water purification kettle or the leading coarse filtration water purification product, which is more in line with people's expectations for water purification effect. There are different opinions on the selection of water purifiers in the two camps. Chongqing bichun has sorted out the main differences between the two kinds of water purification products, hoping to help you choose a more suitable water purifier.
Difference between ultrafiltration and reverse osmosis water purifier I: water purification effect
In fact, the structure of ultrafiltration and reverse osmosis water purifier is similar. The first half of ultrafiltration membrane and reverse osmosis membrane are equipped with ppcotton, activated carbon and other primary filter elements, and the final gap lies in the filtration performance of ultrafiltration membrane and reverse osmosis membrane. Generally speaking, the precision of ultrafiltration water purifier is about 0.01-0.1 μ m, while the filtration precision of reverse osmosis membrane can reach 0.0001 μ m, which is just like that of the sieve with smaller pore size. Obviously, the sieve with smaller pore distance has higher filtration precision.
Functions of filter elements at all levels of RO water purifier
As far as the filtration effect is concerned, the ultrafiltration water purifier can remove rust, sediment, bacteria, virus, residual chlorine, heterochromatic odor and heavy metal substances in the water for you, while the reverse osmosis water purifier can further filter out the beneficial and harmful metal ions in the water, but the calcium and magnesium ions needed by the human body will also be discharged along with the wastewater. The output of RO water purifier is almost pure water.
These two types of water purifiers are of mixed advantages and disadvantages. If the chemical industry in the living area is underdeveloped and the heavy metal discharge is normal, it is better to directly select ultrafiltration, which will retain calcium and magnesium ions. If the chemical water discharge in the living area exceeds the standard, properly use the ultrafiltration mechanism, and do not let the heavy metal ions harmful to health be absorbed by the human body.
Difference between ultrafiltration and reverse osmosis water purifier II: effluent flow
If there is no pressure, the reverse osmosis water purifier will not even produce pure water for you. Its fine filtration structure will greatly reduce the flow rate of water. Generally speaking, the pure water flow of RO water purifier is about 0.1l/min, that is to say, it takes about 3 minutes to flow out the pure water source of a can of coke, because this turtle speed setting RO water purifier will mostly be installed with water storage buckets that can store several liters of pure water in advance, and also reserve a large flow faucet with coarse consideration.
There is no need to worry about the flow of the ultrafiltration water purifier. Their water output per minute is about 1.5L. In addition, there are some large flow reverse osmosis water purifiers with a flow of more than 400gpd on the market, and the flow is about 1.2L per minute. If the water consumption is large, the key value of the water output flow should be optimistic.
Difference between ultrafiltration and reverse osmosis water purifier 3: wastewater rate
If the amount of raw water entering is the same as the net amount of water produced, it is said that no one can believe that they can clean water? Therefore, if we want to get pure and healthy water, we must sacrifice a certain proportion of waste water. Generally speaking, the waste water of ultrafiltration water purifier is very little, but pay attention to open the flushing port regularly to clean the filter element. Compared with the reverse osmosis water purifier, it is more wasteful. In order to ensure the long life of the reverse osmosis membrane, increasing the wastewater ratio can prevent the fouling damage of the reverse osmosis membrane.
Generally speaking, the wastewater rate of RO water purifier has developed from the earliest 5:1 to 3:1 or even 2:1, that is to say, one cup of pure water generated will waste two cups of water with the same volume. Of course, even the water called "waste water" is very clean. Its purity is higher than the raw water but lower than the pure water, but its salinity is higher. It will not be wasted to wash clothes, mop the floor or flush the toilet.