A few years ago, I found some problems with tap water at home, spraying plants with tap water, white spots will appear on the leaf surface after the evaporation of the water droplets, spraying more often, the leaf surface will be covered by these white spots all over, which will seriously impede the photosynthesis of plants. At the same time, this situation also occurs in the kitchen, Guangzhou people like to do steamed dishes, steamed fish, steamed meat, steamed ribs and even steamed vegetables, etc., home used as a steamer non-stick pan used for a period of time, the pan set off a thick layer of white scale, clear up is very difficult, because the non-stick coating does not allow barbaric treatment. I sent this problem in the circle of friends to ask everyone what solution, the answer is that you can install water filtration ah!
After much selection, a water filtration system from a well-known manufacturer was installed for more than $2,000 to be used as water for food washing and steaming vegetables in the kitchen. However, this system can not filter limescale, what was like, and then what is like. Luckily, my neighborhood has a large recirculating water filtration system installed, and the water from this system does not produce limescale. Having said that, readers will find it strange that there are ready-made better not to use but to install another inferior one? The reason is that when I renovated my house, I cut off the filtered water source in the kitchen, which was a bit of a pain to access.
What determines the quality of the final product of the two devices is different? As far as I know, it's due to the difference in the filtration media. A deep filtration (ready to drink) system filters much finer and is able to divert bacteria-sized objects away from the final outlet. However, this type of system produces concentrated water (or simply wastewater), and the ratio of concentrated water to purified water is 3:1 or higher. This is the type of system I have installed in my factory, and the concentrated water produced by the system can be used up in other production processes as needed, which is unacceptable for general household use. Unless you make the water filtration system into a larger system that stores the concentrated water in specific containers for washing machines, toilet tanks, or even other uses, it is a huge waste of valuable water resources, and is extremely environmentally unfriendly, and the use of such a system by the entire population would be unthinkable. It is unthinkable to imagine such a system for all. The most recognizable feature of this system is that the pump must be powered by electricity. I don't have a high demand for home use, so I installed a cartridge-type system, but I can't imagine that a product with this kind of price tag would not be able to achieve the purpose of filtering limescale.
Some people say that limescale is a nutrient, and I think our bodies can ignore this nutrition. I use filtered water for all my cooking and soups, as do my friends around me, because I feel that I can get the trace elements I need for my health from my food without having to rely on drinking water. Pure water has been around for a certain number of years now, and the fact that no health problems have arisen as a result of drinking it for a long period of time has already given us the answer. The limescale in tap water is indeed alarming, and even pet dogs can't stand it, and it's common for puppies who drink tap water for a long time to develop urinary stones. Or people with stone bodies should try to avoid drinking unfiltered tap water. To see the severity of the limescale you only need to put a tablespoon of water in a pot and boil it dry, and you can immediately see the true nature of the limescale.
Some people say that limescale doesn't affect people's health, and that's not quite true. Limescale in hot water when precipitation will adsorb heavy metals in the water, who do not want heavy metals into their own bodies. And the formation of limescale carbonate encounter stomach acid will decompose metal ions, metal ions are the main material to form human stones, so that the removal of limescale is a certain health significance. It is estimated that the stomach acid of dogs can produce more metal ions, so they will have more stones if they drink tap water.
I'm not an expert and can't discuss the issue from a professional point of view, but for my own use, a water filtration system is not useful. Therefore, to install a water filtration system, first of all, to clarify what their own requirements. But apart from limescale, what else is there to filter in city tap water that has reached drinking water standards? If the quality of tap water in one's area is terrible, one should fully consult with a water filter sales salesperson when shopping for a filtration system to figure out what type of water filter to use to solve one's problems, or else it will be a futile and costly endeavor for nothing, as it was for me.
I've had the experience in the past that after installing a simple water filter on my faucet, the limescale in the stainless steel liner of my electric hot water bottle essentially disappeared, which was the basis of the knowledge that I wanted to install a water filtration system to remove the limescale. And why is it that using a larger water filtration system instead results in such unexpected results for me? I think this is because the insoluble limescale particles are filtered out by the system cartridge, and the soluble limescale material that enters the hot water cylinder is not concentrated enough to precipitate out because of the small amount of evaporation from the electric hot water cylinder, so there is no limescale adherence in the hot water cylinder. Steamer specializes in high-temperature evaporation work, the original water-soluble substances in the pot meet high temperature decomposition into insoluble carbonates, and due to high-temperature heating and rapid evaporation to reach the precipitation of the concentration of evaporation, continuous evaporation of precipitation material layer is constantly thickening. This deposition layer has a characteristic, it is in the body of water is a transparent state, when the water is poured off it will show the white layer of scale, it is estimated that the metal ions in the scale and carbon dioxide in the air to generate more carbonate reaction and show white, so it seems that the formation of some of the scale is the metal ions in the water to stay in the class of substances. There have been comments that the water in the pot is a carbonate solution, I think this view has to be supported by the presence of some amount of carbonic acid in the water, after all, the solubility of carbonates in water is very limited, and the carbonates can't get past the cartridge. If the estimate is correct, scale removal starts with removing metal ions from the water. Because the factory production needs deionized water, I know to remove metal ions in the water, you can use the ion exchange resin for contact exchange filtration to remove metal ions in the water, but with the failure of the resin to be used in a special way to be pickled to restore, which gives the user a certain degree of difficulty.
Another friend commented that the formation of calcium carbonate scale calcium bicarbonate dissolved in water after heat decomposition into insoluble calcium carbonate and carbon dioxide, this explanation is very reasonable, because the ordinary cartridge can not filter out the substances dissolved in water, calcium bicarbonate drilling a hole, to the hot pot to come out.
The other day, I removed the water filtration system, along with nine unused cartridges, placed next to the trash can for cleaning aunts to take for a few dollars. Because the frequency of use is not high, the water filter a few years have not needed to change the core, but I always feel that the system out of the water after so many dirty filter can not be assured of use. As for the limescale in the pot, I had to use citric acid, baking soda and other things to deal with it. The friend who planted the succulent reminded that spraying the foliage with pure water, so as not to appear ugly spots on the surface of succulent leaves.
The new promotion of a ceramic cartridge water purifier on TV, without the electric pump pressurization, no wastewater, only need to clean and do not need to change the core, which seems quite reasonable, but it is estimated that the tap water pressure to make the water through the ceramic cartridge micropore system, the amount of water supply will become a problem, especially in the water pressure is not enough when used in the environment.
From the water supply system in Western countries, the work of water filtration should not be completed by the household user, the water supply company should provide people with directly drinkable tap water, which is the fundamental solution.
Is home water purification a scam to some extent?
This sentence, there is some truth, but not so pessimistic.
First, why is it a scam?
The reason why it is a scam has some truth, because now there are many unscrupulous manufacturers do see the prospects for the development of China's water treatment market, and the use of inferior materials for production and processing, or play with the concept of water purification, pure water, drinking water, pure water, activated water, oxidized water, eco-water, etc., and even more abhorrent is that some businessmen, artificially add a point of minerals, became mineral water, add a point of oxygen molecules to become oxygen-enriched water, and then add a point of water. Oxygen molecules into the oxygen-rich water, added a little baking soda into the alkaline water ...... This is not a scam and what?
Secondly, why is it not a scam?
But a fact that can not be ignored: water purifiers do have the need to exist, so to speak, Europe and the United States developed countries of the family to drink water, are purified, and then look at foreign fast food, KFC and McDonald's, they use the water, but also after the purification of the water. Therefore, from the necessity of home water purifier to a certain extent, really is not a scam.
Show Nest I personally experienced things: before a provincial capital city to work and study, when the water purifier is about 11 months to change the filter, and then to Beijing, the same water purifier, only 1.5-2 years to change the filter, you can imagine that there is no difference in the quality of water across the country?
Is the water across the country polluted? How much has been contaminated? These data are available online, even if it is not, you can look at your city's water company's water treatment equipment, water supply pipeline aging, including the water supply pipeline in your neighborhood ...... which link can ensure that our drinking water is up to standard?
Third, what kind of water treatment do we need?
Show Nest I would like to say that there are only three kinds of water on the market: soft water, water purification, pure water, other water, such as activated water, oxygenated water, drinking water, ecological water, and so on, are all conceptual speculation.
1, what is soft water?
After the water softener softens the water, it is the water to cause scaling of substances to deal with the water, so that living water to calcify, there is no common feeling of hardness, such as washing clothes, washing towels after a very fluffy, after bathing, the skin is very smooth, which is the role of the soft water, but the soft water is not recommended for drinking.
2. What is purified water?
After the water purifier purified water, to put it simply, is to purify away some harmful substances, some can also purify some heavy metals and bacteria, so that the purpose of the water is to drink and cook.
3. What is pure water?
After the water purifier filtered water, can be understood as all the impurities are removed, heavy metals and bacteria are gone, out of the pure water, and can even be understood as distilled water, and the difference between water purification is that the water purifier is a pure water production of every 1 liter of water, you have to waste about 3 liters or so (different brands are not the same) of wastewater, a bit of a waste of resources. The disadvantage of pure water is that the minerals that are beneficial to the human body are also filtered out, and it is generally not recommended to use it for cooking.
My suggestion is that the average family needs at least one water purifier, which is a mandatory option; as for water softeners and water purifiers, you can choose according to demand, which is optional.
This issue should be divided into two parts, 1, why some people say that there is a scam inside the home water purifier. 2. Installation of a home water purifier is not necessary, whether the water purifier works?
First of all, to see if the problem is a scam, I think the reason why some people say that the water purifier is a scam because a lot of sales merchants in the promotion of water purifiers using the method of deception of consumers, so that consumers feel cheated. Specific deception of the consumer's tactics are basically the following:
1. publicize free water purifier, but then charge a high price of the filter and other consumables, and the actual provision of the water purifier is a small manufacturer of low-quality products. Even a lot of claims that their own water purifiers do not need to replace the cartridge for life, obviously rogue practices, and even on TV direct marketing often appear on this set, seriously hurt the feelings of the general public.
2. Exaggerate the role of water purifiers, claiming that their water purifiers can prevent and cure diseases. Like what high-energy magnetized water ah, Sh can prevent cancer ah, drink not sick ah. Especially in rural areas, there are often sales merchants using conference marketing techniques, like selling health care products, overstating the role of water purifiers, claiming that their water purifiers can cure all diseases. Serious exaggeration of the facts, in fact, the role of the water purifier is to allow us to drink the water more secure and more assured a little, no other role.
3. In order to promote the product, overstating the poor quality of tap water! Many merchants like to use electrolyzer to do electrolysis experiments in marketing, tap water by electrolysis water is very turbid, and after the purifier to purify the water is still very clarified, and then they mislead everyone water is very dirty, not after purification can not drink, in fact, because the water generally contains calcium, magnesium and other cations and hydroxide, chlorine, and other anions, so that the water has a conductive. After energized, the anode in the electrolyzer releases iron ions, combined with the anions in the water to generate a variety of iron flocculent precipitates. Since the anions and cations of pure water have been purified and removed, it is not electrically conductive, so there is no reaction when it is energized and the water remains clear. Electrolyzer just shows that the water is very mineral only, can not represent the water quality must be poor.
Two, finished the business in the promotion of products on the exaggerated, and then look at in the end there is no need to install a water purifier:
In addition to the sudden pollution of the water source, the water quality of tap water factory water or can be, but in the delivery process of secondary pollution is a real presence.
After the founding of the country, most of the pipelines laid with copper and cast iron pipes, more than ten years there will be serious corrosion and rust, and then switched to galvanized steel pipe, but only not easy to oxidize, rust effect is slightly better. Since 2000, China has banned the use of galvanized pipe. Currently 80% of the use of PPR (polypropylene), PPR is a non-toxic and harmless plastic, the interface with a thermo-soluble way of connecting, without the use of toxic glue, PPR corrosion-resistant, long service life, you can see RiFeng tube everywhere to advertise the warranty of 50 years. Some hospitals, or home renovation is more expensive stainless steel pipe, there is no problem.
So some of the older neighborhoods built for a long time can pay attention to, knock on your home water pipe, issued by the clanging metal sound, it is not good.
The factory water needs to be added to a certain water pressure, in order to run to thousands of households. National regulations in the pipe network to be able to send the water pressure to a height of about 14 meters, in fact, most of our country can reach 28 to 35 meters of water pressure, that is to say, the general bungalow or six-storey building, directly unscrew the faucet, the water on the thinly-veiled out of it. While living in a dozen high-rise tenants, the need for the community's own "secondary water supply.
There are two ways of secondary water supply, some of the new developments are in the basement with variable frequency and high pressure pumps, always pressurized to the roof water supply, this way is cleaner. And some of the older homes are pumping water to the roof, building a cistern on the roof, relying on natural water pressure down the water supply. A lot of roof tank cleaning and protection is responsible for the local property, the management level is very worrying, some of them are not cleaned for many years, accumulated a lot of dirt and grime, some of the tank closed measures are not good, into some mosquitoes and flies, red bugs and dead rats, would have been eliminated by the factory when the bacteria, and here again breeding.
The secondary water supply tank can be said to be the most dangerous part of the current decline in water quality into the home.
In summary, considering the above issues, it is safer to install a water purifier.
But be sure to choose a big brand of well-known manufacturers of products to rely on.
So, there is nothing wrong. Because, at present, a large number of home water purifier promotion and sales in the market, to take is fooling, deception means. Therefore, many Chinese families have a bad impression of water purifiers.
From the professional point of view of the water purifier, many factories in order to promote, sales, and fast shipment, in the product and publicity, to take deceptive means. On the one hand, all water purifiers, all need filter cartridges. And the cartridge needs to be replaced regularly, such as 3 months, half a year or so . But many factories in order to sell products, will not tell the user at all, to change the filter cartridge. Therefore, do not change the filter cartridge of the water purifier, it is useless;
On the other hand, many companies to promote the water purifier, take the problem of exaggeration, and even myth. The filtered water, into God water, functional water. Neglected the water purifier is only to solve the water safety, can not solve the water health performance.
Home water purifier is not a scam I'll tell you. There are a variety of water purifiers on the market, there are front, ultrafiltration, reverse osmosis. The south belongs to the soft water, you can use the ultra-filtration machine. Because there is residual chlorine in the water after the tap water is sterilized. Chlorine is a carcinogen. It is easily absorbed by the skin. Ultrafilter has activated carbon cartridge, which can adsorb residual chlorine and odor. Ultrafilter is generally worth a few hundred dollars. If you sell thousands or several dry is expensive. Pre-filter is generally not useful, it is inside the ultra-filtration membrane, can filter out sediment. Suitable for rural areas where there is no tap water but spring water. Also called the central water purifier. Then there is reverse osmosis. Generally four to five levels of filtration. The main cartridge is RO reverse osmosis membrane, cartridge hole shin can reach 0.1 nanometers. General heavy metals, pesticides, bacteria can be filtered out. The water can be drunk directly. It is to use electricity. There is a fee for water. The national standard to reach 1:3 water costs. Good machine also has 1.1 water costs. Reverse osmosis water purifier is suitable for the northern region with hard water. As for some say magnetized water, are sellers cheat. Most of the water purifier sales in the countryside are fraudulent. There are a lot of no qualification. Now there are more than three thousand brands of water purifiers in the country, and only five hundred of them are really qualified. There are a lot of famous brands are also labeled. There are also foreign names. The water purification industry is a variety of fish eyes. The real cost of a water purifier is only one or two dry, good more than two thousand. But the businessman to sell it to five or six dry to 10,000 such as no fooling is never sold. Mainly to play the imported brand. In fact, I also sell water purifiers, but do business with a conscience. Like my hometown is Shennongjia, water quality tds value is only fifty to sixty there is no need to install water purifier. To reach more than 120 an is better. Now the country also advocate healthy drinking water. So as far as the water purifier did not cheat you. The one who cheated you is the person who cheated you is the businessman.
Is not a scam, depending on what kind of water purifier you buy, if you buy a water purifier that does not purify water, it is definitely a scam. Dad reviewed 17 water purifiers before the review, and the results are as follows:
The water purifier is not a scam, it's someone who cheats in the name of water purification.
Do we need a water purifier? Just look at one of the simplest examples, can prove that your home boiling water pot after a year of use is not a thick layer of scale at the bottom of the pot? This is too much calcium in the water, magnesium and other ions in the heating of the precipitation and the formation, if not dealt with, will enter our body, there are some trace elements is necessary for us, but too much of the unreasonable intake will also cause harm to our body. So the water purifier is able to improve the quality of our drinking water, improve health, a very important tool.
But for the water purification market, many people exaggerated propaganda hype concepts, sell high prices to mislead consumers, which brings bad influence to the whole water purification industry, so that some people feel that the water purifier is a scam.
I have been doing water purification for five years, want to drink water to turn on the faucet to receive a cup of drink, especially in the summer time, extraordinarily comfortable. And did not go through the purification of water, I now have no way to drink, because after the entrance can feel the taste is different, after drinking the stomach will be uncomfortable. Choose a real brand, real price, can really do purification on it.
In addition to add, now the mainstream water purifier to ultrafiltration membrane water purifier and reverse osmosis membrane (RO) for. Generally five levels of filtration, each level of each division to achieve an ideal purification effect, the need for regular replacement of the cartridge never and to ensure that the purification effect. And some claim that do not need to change the core, do not need to clean, the price is very cheap, the volume is very small water purifier, its purification principle fuzzy effect is not clear, it is recommended that you choose carefully.
Once did this industry, but not sales, say it.
The water purifier sold on the market are generally two kinds, ultra-filtration and ro, there is a so-called nanofiltration, I personally think that the ultra-filtration nanofiltration is to fool people, what leaves the mineral gimmick. To buy a water purifier must choose ro machine, out of the water is almost pure water. Of course, there is a disadvantage of ro machine, is the use of electricity and wastewater, wastewater and your local tap water quality has a lot to do. Water purifiers are profiteering, large displacement ro machine is only 500 yuan cost, after brand packaging, plus many gimmick features, can be sold to 3000 +. In addition, many neighborhoods also have the kind of self-service water vending machine, in fact, is the ro machine, but I do not recommend that we go with, because it is not transparent maintenance, to give you to set up a few old cartridges and then outside the cartridge is really a change? Inside the water storage tank is really clean? Don't believe the staff to draw you a maintenance log, don't believe the test report posted above you, don't believe the staff to show you the tds value (soluble solids detection value), it is only a reference, of course, too high certainly not good
This question is very strict, a little difficult to answer-- "To a certain extent", "to a certain extent", "to a certain extent", "to a certain extent", "to a certain extent", "to a certain extent". The five words "to a certain extent" are indeed in line with the current state of the water purifier market. That is to say, the water purifier is half cheating half not cheating products.
Where there is no deception
In fact, now both businesses and consumers, are a bit of "water purifier" and "water purifier" concept confused. The basic function of the "water purifier" is only to filter the water, the water is only relatively clean - waterworks, also called water purification plant. The water purifier is just to purify the water a little cleaner than the water plant.
But a water purifier is different, it is to filter out all the substances inside the water except water - the precision is molecular level. The water that you get can be called pure water - there is no substance other than water molecules.
In the past, the kind of cartridges installed in the barrel of the water dispenser, the faucet or the pipe above the filter, that thing is called "water purifier". Today, these huge, with a water storage tank (now also appeared without a tank of products), the internal motor, will be discharged waste water, are "water purifier".
Water purifier as advertised by the business, with no scale, no heavy metals, can be drunk directly and so on benefits - from the water purifier features and benefits, this can not be considered a scam.
Where is the scam
To say that the business is not scamming at all, it is a bit hard to say. Mainly on top of the cost of the water purifier.
The filter of the water purifier is very simple, PP cotton filtration, activated carbon filtration, and reverse osmosis membrane filtration - of which only the reverse osmosis membrane can play a role in creating pure water, the rest of the cartridge is a simple water purification (the same as the water purifier).
The cost of these cartridges is actually not high, the reverse osmosis membrane is the most expensive, but the cost is absolutely no more than 100 yuan, and each water purifier will only have one inside. The other cartridges are cheap enough, and the best ones don't cost more than $50.
On the contrary, today's water purifier market, often thousands of dollars of water purifier, which is nothing more than a stack of PP cotton and activated carbon cartridge number - up to six.
So to be from the water purifier selling price, there is indeed some false high.
In short, the water purifier product itself is not a problem. Some developed countries in the public **** occasions to provide direct drinking water, are also the use of water purifiers. As to whether those water purifiers are worth so much money, it is a matter of opinion.
Lastly, regardless of the price of the water purifier, be sure to look carefully at the quality (not quantity) of the filter cartridges. The effect of the use of water purifiers, is determined by the cartridge, other intelligent products, high-grade shell, etc., are subsidiary functions.
The water purifier is not a scam, I think the most scientific way to judge is to use professional water testing equipment, the water purifier before the purification of water quality and water quality after purification of health to carry out a test comparison, you can intuitively see that the water purifier in the end there is no effect, is not a scam.
Here we look at the use of the market's authoritative water quality testing pen water detectives to do this comparison test:
First of all, we took a user's home in Haikou, a neighborhood tap water with a water quality testing pen to detect the results are as follows:
We can see that the COD oxygen demand indicators are high, TOC2.3mg/L, chromaticity 2.9, the Water Detective Grade Score is good, comprehensive score 86 points. These indicators are not clear friends can see our next introduction or Baidu, which is the national "National Drinking Water Standard" 5749 water quality indicators of some important measurement parameters.
Next we look at the tap water was purified by a purifier water quality testing (to avoid advertising suspicion, we omitted the brand name of the water purifier):
You can see that the water quality after the purifier test has changed significantly, TOC, COD, chromaticity are reduced, the water quality of the integrated score also reached 99. See here, we can say that the purifier is a scam?
This is the first time that we have seen this.
This is the country's current "drinking water health standards" 5749 norms:
The following is the significance of the major parameters of our test, we can make up their own brain:
CCTV ten sets of special broadcast "into the scientific - torture drinking water safety" program, the host to the majority of consumers solemn advice: under the existing conditions, we want to let themselves drink a safe and healthy water, in fact, it is not difficult. The water, in fact, is not difficult, that is, to their homes installed on a water purifier!
But why do a lot of people feel that the water purifier is a scam, that is because the domestic water purifier industry is still a mixed bag, filled with thousands of water purifier manufacturers, but really sink down to the research and development of good products are not many, so many users buy a poor quality water purifier, there is no purification effect, the cost of water purifiers in the 700 or so, after the manufacturer, dealers at all levels of markup, the actual price in the hands of the user at 4,000 to 4,000. To the user's hands the price of about 4000-5000.
In addition, many users do not know how to clean and maintain the water purifier, as well as do not know when to replace the cartridge, resulting in drinking unclean water, a water purifier, the most central component is the cartridge, the cartridge is to protect the health of the water quality of the only conditions, some businesses now claim that the water purifier does not need to replace the cartridge, which is a lie, each filter has its own period of use.
So in short, the water purifier is a great role, especially for some of the heavy industry like the north of the place, water pollution is more serious. But you must use the scientific method to choose the right water purifier, and timely replacement of filter maintenance, no doubt the best way to judge the water purifier and filter is to test the water quality, so as to protect the family's drinking water health.