Before buying a water purifier, you may think that as long as it is a water purifier, it can have the effect of purchasing, but there will be differences. However, when you are ready to buy, you will find that there are so many types of water purifiers, including pre-filters, reverse osmosis water purifiers, pipeline machines, ultrafiltration water purifiers, etc., is it better to have a water purifier with wastewater plugged in, or is it better to have no wastewater? Don't be deceived, let's get to the truth!
As a water purifier that can effectively filter tap water at home, justUltrafiltration water purifiers with or without wastewater and reverse osmosis water purifiers with wastewater are both terminal water purifiersThese two water purifiers are combined with different types of filter elements to have an interception effect, and there seems to be no difference in appearance, but the actual difference is still very large.
If you have enough budget, try to choose no wastewaterTarget.
There are many ways for water purifiers on the market to treat wastewater, including reverse osmosis, ion exchange, membrane separation, etc.
The water purifier without waste water is generally an ultrafiltration water purifier, and its internal filter element uses PP cotton, activated carbon and ultrafiltration membrane filter element, etc., which can basically filter common impurities in tap water. Because its main filter element is an ultrafiltration membrane filter element, it will not produce wastewater, and the product can be filtered normally without plugging inIdeal for kitchen water purification needs。The water flow is large, which is very suitable for washing vegetables and cooking.
The water purifier without waste water does not need to be plugged in and will not produce wastewater, but compared with the reverse osmosis water purifier with wastewater, its filtration effect is relatively lowThe filtration accuracy without waste water is 001 micron, filtered tap water is not enough to achieve the effect of direct drinking。If the pollution is serious and there is heavy metal pollution, the ultrafiltration water purifier will not have a good effect.
The water purifier with wastewater plug-in is generally a reverse osmosis water purifier, and its inner filter element uses PP cotton, activated carbon, and RO membrane filter element to filter the tiny invisible pollution in tap water through the principle of reverse osmosis. Because the RO membrane filtration accuracy is high, it is not possible to filter all the tap water, and a small amount of wastewater will be generatedIts water flow is not as large as that of ultrafiltration water purifiers, which is suitable for drinking water.
Reverse osmosis water purifier produces wastewater but it'sHigh filtration precision, 00001 microns, the filtered tap water can be drunk directly。Of course, this wastewater is not dirty water, and can be collected for secondary use, such as flushing toilets, mopping floors, etc., to reduce the waste of tap water. The proportion of wastewater in the reverse osmosis water purifier is also regulated by the industry, and those below the water efficiency level of 45% are unqualified products.
* In terms of comparison, there are also obvious differences between the two:The reverse osmosis water purifier is relatively expensive, because the cost of the RO membrane filter element is high, and the cost of replacing the filter element is naturally higher。We choose according to our own water needs, don't blindly follow the trend, or just look at the **!
Comparison of practicality: ultrafiltration water purifier is suitable for kitchen water purification, reverse osmosis water purifier is considered in kitchen water purification and household drinking water, and in the commercial field, reverse osmosis water purifier with wastewater is more popular. Therefore, many people will choose a reverse osmosis water purifier with wastewater after comprehensively comparing the parameters.
From the perspective of water purification effect, reverse osmosis and membrane separation have the best water purification effect, which can remove most of the pollutants and ions in the water;On the other hand, the water purification effect of ion exchange is slightly worse, and only dissolved ion A can be removed from the water. From the perspective of environmental protection and cost, although membrane separation and reverse osmosis produce wastewater, the treatment cost is low and there will be no secondary pollutionIon exchange, on the other hand, is relatively expensive to dispose of and requires regular resin replacement. In addition, different wastewater treatment methods also have different scope of application for different types of pollutants, which need to be selected according to the actual situation.
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To sum up, reverse osmosis and membrane separation are the best ways to treat wastewater from water purifiers, with a wide range of applications and low treatment costsAlthough the treatment effect of ion exchange is slightly poor, it has a good removal effect for some specific pollutants, the scope of application is narrow, and the treatment cost is relatively high. In addition, different wastewater treatment methods are suitable for different water sources and water quality, which need to be selected according to the actual situation.