I am a water purification major.
I don't recommend your specific brand, so don't say I advertise.
When choosing a water purifier, the first thing to consider is home use. How many people use it? What is the daily dosage? And local water quality? Then decide the function of the water purifier and finally decide the brand.
Let me classify you.
About the number of people:
Our average daily dose is 1.5 2L per day. Of course, this is a basic quantity. There will be more in summer and less in winter, with a maximum of 5L, because too much will reflect water poisoning. So the average we usually calculate is about 2 liters, which is your daily water consumption according to the number of people in your family.
If you usually go to work, plus only rest days and morning and evening hours, then you should consider the discount on the total amount. For example, there are five people, only two old people are at home, and the other three are at work and school.
The calculation method is 5*2= 10 liter.
After folding, 10*0.7=7 liters.
Plus cooking water: 7+ 10= 17 liters.
In this way, the average water consumption of five families is 17 liter.
17 * 30 = 5 10L/ month
This month's consumption determines the travel replacement cycle of your water purifier.
Generally speaking, the daily consumption is 17 liter, and the water consumption is not high, which can be met by household computers on the market at present. Let's look at the water quality.
Question 2. How to judge water quality
As ordinary people, we can simply judge the water quality without professional instruments.
1, usually after boiling water, there is not much scale in the pot, indicating that there are fewer metal ions in the water; Not enough to form a state of precipitation and scaling.
2. Whether there are floating objects visible to the naked eye on the water surface after the water is boiled (a bit like a layer of things on the water surface, not much but visible on the side under the sunlight), indicating that there are floc free particles, organic matter and microorganisms breeding.
3. With the faucet fully open, can the effluent smell chlorine (that is, the smell of bleaching powder)? The smell of chlorine indicates that there is too much free chlorine in tap water to be completely decomposed before reaching users. Because chlorine is a strong oxide, long-term consumption causes accelerated aging of human cells and tissues. Moreover, chlorine in water, microorganisms and organic matter will generate toxic carcinogens such as chloroform when heated, and long-term drinking will cause other diseases in the body.
4. Whether there are chemical plants or mining enterprises in the living area. This is to judge groundwater pollution. Some chemical companies have chemical pollution to the local groundwater, and even if they pass through the waterworks, the water quality will not be very clean. There are mines, because metal deposits are associated, that is to say, there can be only one kind of metal deposits. As long as there is, there is a danger of groundwater metals exceeding the standard, especially lead, arsenic and cadmium. In this regard, it is necessary to choose a water purifier that can remove metal ions.
5. Coastal cities and coastal cities have different degrees of groundwater counter-tide, that is, some groundwater is infiltrated by seawater. Water contains many things that people don't need, and the current tap water technology can't remove them. Therefore, the choice of household water purifier needs to be considered.
Selection of water purifier:
1. Based on the above conditions, if there are many family members, big children, no seaside, no mining area, small scale and no obvious floating objects, it means that the water quality is good and the ultrafiltration machine can be used, which is economical and applicable.
2. If you have few family members and don't have the above 1-5, you can choose a small two-stage or three-stage ultrafiltration machine.
3. If the above conditions are 1-3 instead of 4 and 5, you can also choose an ultrafiltration machine, but it is most important for models with more than 5 treatment processes.
4. In any case of 4 and 5, ultrafiltration cannot be used, because the filtration level of ultrafiltration is not enough to completely remove heavy metals and a large number of organic chemicals. Therefore, it is necessary to use a water purifier above nanofiltration, that is, nanofiltration and water purifier. In view of the lack of nanofiltration in the market at present and the high price, the water purifier is a good choice.
5. For the sake of health, if there are old people and children at home, it is suggested to choose a pure water machine and add mineralization treatment to artificially turn pure water into mineralized water to avoid drinking weak acid water directly.
Question 3. Origin and brand of water purifier.
In fact, this is not important, because at present, the core technologies of high-end water purification products are imported from abroad, and the components of the core technologies are basically imported. Therefore, all the important things are imported, except some accessories made in China. There are only a few manufacturers producing core components, so no matter which product you choose, it is actually the same. Only the appearance and assembly process are different.
The core components of the water purifier are nothing more than the pump body and reverse osmosis membrane. The reverse osmosis membrane of household machines is mostly made by Sewhan in Korea because of its low price and good durability. This pump is the brand of Delta and Deng Yuan.
If you have to build a brand
Famous brand, beautiful angel Qinyuan old-fashioned
Affordable and cost-effective: I am familiar with nature and Langtai. I have been to the factory and the production price is standardized. They are all OEM manufacturers of big brands, and many well-known brands come from them.
About what you said about Qinyuan, I want to say impossible. Qinyuan's products may not be novel enough in appearance, so they will be cast aside.
The beautiful machine works well, and the advanced technology is really average.
Angel is basically an OEM product, which means that he doesn't really have much technology. They are all branded.
As for foreign brands, I don't recommend buying them, because first of all, the price is high, and secondly, there are acclimatized situations. In foreign countries with developed water purification industry, such as Britain, the United States, Japan and South Korea. People's tap water can be directly drunk, that is, direct drinking water. On this basis, the water purifier is an advanced treatment with the main purpose of improving the taste. In China, more than 80% of water sources are polluted, and tap water treatment is simple. Those water purifiers are of little use. Moreover, the replacement of consumables is particularly inconvenient.
Reference price: about 500 ultrafilters below grade 4.
700-900 is suitable for ultrafilters above grade 4 and below grade 8.
900- 1200 is suitable for Korean integrated filter element of ultrafiltration machine.
The brand of pure water machine is generally above 1800.
General brand of pure water machine 900- 1200
Cost-effective water purifier 1200 or so.
Mineralization after pure water is about 1500.
Too high is black, too low is useless, because accessories are cheap.
Finally, I wish you a suitable one.
You can add me Baidu hi if you have specific questions.