Drinking water safety can not be sloppy detailed four types of household water purifiers

Since the tap water we drink daily faces a certain risk of pollution, how can we deal with it in exchange for health? The best way is of course to install a water purifier in your home. At present, there are four main types of household water purifiers on the market, including pre-water purifier, ultrafiltration machine, RO reverse osmosis water purifier and central water purifier.

1. Front water purifier

The first is the front water purifier. As the name implies, it is installed at the water pipe before the tap water enters the house. It is a reliable large particle impurity filtering device, which can effectively filter out sediment, rust, bacteria, colloids, macromolecular organic matter, etc. in the water. In simple terms, it is to filter visible to the naked eye. Impurities.

After the water filtered by the front water purifier reduces the large particle impurities in the water, it plays a positive role in protecting the water heater, washing machine, and faucet, especially the water purifier and pure water machine, which can extend the life of the filter element. Its advantage is that it can be installed once permanent use, no need to replace the filter element, only need to clean the filter screen regularly. But the shortcomings are also obvious, because it can only simply filter out large particles of impurities such as sediment and rust, but for the general filtering effect, the filtered water cannot be directly drunk.

2. Ultrafiltration machine

Then, ultrafiltration machine is a kind of water purification equipment that uses ultrafiltration technology to purify water. Ultrafiltration refers to the use of ultrafiltration membrane, which is a special membrane that can make small molecule solutes and solvents pass through a certain pore size under a certain pressure, so that macromolecular solutes cannot pass through and stay on one side of the membrane, thus making macromolecular substances partially filtered and pure, generally only suitable for water hardness of the following areas.

Although the filtration accuracy of the ultrafiltration machine is high, the purified water is similar to that of mineral water, and the flow rate is large, and it can be automatically purified without electricity. However, the water filtered by the ultrafiltration machine has poor water quality and taste, and it cannot be completely removed. Heavy metals in the water.

3. RO reverse osmosis water purifier

The water purified by the RO reverse osmosis water purifier is relatively pure and sanitary, and it can also solve the problem that the ultrafiltration machine cannot completely remove heavy metals in the water. It is close to the standard of pure water, the impurities are very low, and the TDS value can be maintained between 1 and 5. The water purified by the reverse osmosis water purifier is used for cooking, which is more hygienic and delicious. It can also be used for small household appliances such as humidifiers, steam irons, and beauty instruments. It is applicable to a wide range of areas, in theory, all regions are applicable.

However, because the reverse osmosis water purifier uses a water pump, it needs to be connected to the power supply. In addition, its filtration accuracy is very high, so the water pressure will be relatively small, and the water consumption will also increase. A certain proportion of waste water will be formed while filtering pure water. Therefore, it is necessary to pay attention to the waste water ratio when purchasing. In addition, the use cost of RO reverse osmosis membrane replacement cannot be ignored.

4. Central water purifier

The last central water purifier can be said to be an upgraded version of the previous types of water purifiers. It refers to a complete set of water purification equipment, including front water purifier, central water purifier, central water softener, terminal water dispenser, etc. It can purify the whole house in all directions and is not easy to produce scale. However, a set of central water purifier is expensive and is not acceptable to ordinary users. At the same time, the central water softener needs to consume salts to reduce the hardness of water quality, which will increase daily expenses.

5. Other water purification products

In addition to the above four main water purifiers, there are different water purifiers for different use scenarios. For example, the water purifier used at the faucet, this type of product mainly uses porous inorganic microfiltration technology, and its main function is the filter element. Due to the limitation of the filter area, the filter element material and other factors, the water purification capacity of this type of water purifier is limited and the service life is short., So the filter element is easy to block.

The core of the simple filter kettle is the same as other water purifiers. The filter element is used to filter particulate impurities, plankton, peculiar smell, etc. in the water to improve the taste of the water. Most of the filter kettle uses activated carbon to adsorb the adsorption of activated carbon. Impurities in water. However, the filter kettle only provides a rough filtration, and tap water cannot be drunk directly after filtration.

The all-in-one filtering and direct drinking heating machine combines the functions of filtering and heating. Although this kind of products combine the functions of water purification and heating, some products have the condition that raw water and waste water are not separated, and waste water is the inevitable product of products using RO reverse osmosis membrane. Therefore, it is necessary to choose a water tank in which pure waste water can be separated, and it is better to have UV bacteriostatic design in the water storage tank to avoid secondary water pollution.