Advantages and differences between pure water machine and ultrafiltration machine

The water purifiers and ultrafiltration machines that we will introduce today are the most mainstream products on the market. Their most important filter elements are filter elements and reverse osmosis technology. As a member of the water purification system family, what are their differences and advantages? In fact, the water purification system also includes water purifiers, central water purifiers and so on.

The difference between pure water machine and ultrafiltration machine-ultrafiltration machine

principle

Ultrafiltration is a pressurized membrane separation technology that allows small molecular solutes and solvents to pass through a special membrane with a certain pore size under a certain pressure, so that macromolecular solutes are impermeable and stay on one side of the membrane. Macromolecular substances have been partially purified. Ultrafiltration can be divided into three types: microfiltration, ultrafiltration and reverse osmosis according to the operating pressure applied and the average pore diameter of the membrane used. The operating pressure used by reverse osmosis is greater than that of ultrafiltration, often reaching 35×10^5 Pa～140×10^5 Pa. The average pore size of the membrane is the smallest, generally less than 10 angstroms. It is used to separate small molecular solutes, such as seawater desalination. , High-purity water, etc.

advantage

No waste water, no electricity, water can be discharged by tap water pressure, convenient and simple to use. At present, ultrafiltration membrane water purifiers are widely used in the south, especially in places with low scale. At the same time, water purifiers are also used as water purifiers for units, schools, banks, etc. These water purifiers are more effective, safer and more reliable to use, and ensure healthy drinking water.

Disadvantage

Incomplete filtration. If the water contains heavy metals and toxic and harmful substances, the ultrafiltration membrane will not filter thoroughly. At the same time, the problem is that the ultrafiltration membrane produced by some small manufacturers is of poor quality and it is difficult to guarantee the filtration effect. The membrane pores are not uniform. The filtering problem is also very serious.

The difference between pure water machine and ultrafiltration machine-pure water machine

principle

It is to filter the floating matter in the water, heavy metals, bacteria, viruses, etc. are removed. It has a higher filtration technology. Household water purifiers generally use four or five levels of filtration. The first level is a pp cotton filter element, and the second level and The third grade is activated carbon (a well-made manufacturer can combine the second and third stages into one), the fourth grade is RO reverse osmosis membrane, and the fifth grade is precision activated carbon, which is mainly used to improve the taste, so pure water machine comparison Suitable for areas with more serious tap water pollution.

advantage

Due to the small membrane pores, the filtration is thorough, which can effectively remove impurities, bacteria, viruses and other harmful substances in the water, and at the same time remove all heavy metals. The quality of the water coming out is pure water with better taste, which is widely used in medical and sanitation industries.

Disadvantage

The amount of waste water is large, electricity is required, and the installation is relatively complicated and troublesome. Because the water purifier adopts multi-stage filtration, the auxiliary filter element is frequently replaced, which causes the cost to rise, and it is easy to breed the hidden danger of secondary pollution. It is difficult to use a water purifier as a whole-house water purifier or a central water purifier because of its low water quality and flow rate, so the water purifier works better.

In addition to the filter elements of the two types of water purifiers introduced in the article today, other water purifiers such as ceramic filter elements are actually forbidden to be used abroad, because the filtering effect is not good, the cost is not high, and it is difficult to meet the water quality requirements. So if you want to buy a water purifier, you can use today's article as a reference.