重庆反渗透（RO）净水器和重庆超滤（UF）净水器是重庆净水市场主流的两种净水产品，它们的净水效率要远超过净水壶或龙头式的粗滤净水产品，更加符合人们对于净水效果的期望，关于两大阵营净水器的选购也是众说纷纭。重庆碧纯净整理了两类净水产品的比较主要差异，希望可以帮您选到更合适自己的净水器。
超滤与反渗透净水器差异一：净水效果
事实上超滤与反渗透净水器的结构大致相似，他们在超滤膜、反渗透膜前一半都设有PP棉、活性炭等粗滤滤芯，而比较终的差距就在超滤膜、反渗透膜的过滤表现了。一般而言，超滤式净水器的精度大致在0.01-0.1微米，而反渗透膜的过滤精度可以达到0.0001微米，这就好比孔径大小的筛子做对比，明显孔距更小的筛子过滤精度更高。
反渗透净水器的各级滤芯作用
就过滤效果而言，超滤净水器可以为你去除水中的铁锈、泥沙、细菌、病毒、余氯、异色异味以及重金属物质等，而反渗透净水器则能进一步过滤掉水中有益以及有害的金属离子，但人体所需的钙镁离子也会随着废水被排出。反渗透净水器的产出物近乎纯水。
这两类净水器都是优劣参半，如果生活地区化工不发达，重金属排放正常的话直接选择超滤就好，它会保留钙镁离子；如果生活地区化工用水排放超标，妥妥的使用超滤机芯，别让那些危害健康的重金属离子一并被人体吸收。
超滤与反渗透净水器差异二：出水流量
如果没有加压，反渗透净水器甚至不会为你生产纯水，它细密的过滤结构会大幅降低出水流速。一般而言反渗透净水器的纯水流量大致为0.1L每分钟左右，也就是说大致要3分钟才能流出一听可乐的纯净水源，因为这种龟速设定反渗透纯水机大多会安装可预先储存数升纯水的储水桶，也会预留一路粗虑的大流量出水龙头。
超滤纯水机则无需担心流量的问题，他们每分钟出水大致1.5L，另外市面上有一些400GPD以上的大流量反渗透净水器，流量大致是1.2L每分钟，如果用水量大可要看好出水流量这个关键数值。
超滤与反渗透净水器差异三：废水率
如果进入的原水量与产出净水量相同，说他们能净水估计谁都不相信吧？因此想要得到纯净的健康用水就要牺牲掉一定比例的废水。一般而言超滤净水器的废水很少，但是注意定期打开冲洗口清洗滤芯。与之相比反渗透的净水器就比较浪费了，为了保证反渗透膜的长寿，增大废水比率可以防止反渗透膜结垢损坏。
一般而言，反渗透净水器的废水率在从比较早的5:1发展至已达到3:1甚至是2:1，也就是所产生一杯纯净水让浪费掉相同容积的两杯水。当然，即便是叫“废水”这些水也是很洁净的，他们纯净度高于原水但低于纯水，但盐度较高，用来洗衣服、拖地或是冲马桶便不会白白浪费。
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.
