One: water purifier and its purchase
Water purifier: a machine that purifies tap water
Precautions for purchasing a water purifier:
1, buy brand-name products
2, the purchase price is higher than the price:
a, the water purifier structure is different, the water purification effect is also different
b. Multi-stage filtration water purifier.
c. The water purification effect of the reverse osmosis pure water machine is the most ideal.
3. Choose according to water quality.
a. The water hardness of different regions is different. The high hardness water quality in the north of China and the limestone area in the south have high content of calcium and magnesium ions in water, which is easy to scale. You should purchase advanced filtration water purifier with ion exchange resin filter.
b. In urban water with chlorine, heavy color and odor, and organic content of organic water, you can purchase household water purifier with more activated carbon load. Because activated carbon has a strong adsorption effect on residual chlorine and heterochromatic odor in water, it has obvious removal effect on organic matter.
c. For tap water purification with turbid water quality in urban and rural areas, household water purifiers with dual functions of coarse filtration and fine filtration should be purchased. Serious pollution in water requires thorough filtration of bacteria, viruses, odors, pesticides, heavy metals and other impurities in the water. If you do not need to drink it directly, you should purchase a reverse osmosis pure water machine.
Two: pure water machine purchase
1. Pure water machine is a kind of pure water produced by filtering the raw water (physical method) through the current international popular reverse osmosis method without adding any compound. Divided into two categories, one is a drinking water purifier, also known as a household water purifier, and the other is a laboratory pure water machine, which can meet the laboratory requirements for pure water quality.
2: Purchase considerations for pure water machine
a. Look at the manufacturer: When purchasing, it depends on whether the manufacturer has the independent design production capacity of the product.
b, see the quality:
c. Look at the price: The high-end products are imported from the United States, Hong Kong and South Korea, or imported and imported joint parts, such as Hong Kong Ou Wei Shi, the United States, Yikou, Kafron, South Korea's Shihan, etc. In the 2000 ~ 4000 yuan up and down; low-end products using domestically produced parts, filter cartridges and other self-injection processing, the price is below 2,000 yuan.
d. Look at the capacity: Under normal circumstances, the daily water production of pure water machine should be more than three times the actual water consumption.
e, look at the type: After all, the user spends money to buy a piece of furniture, to see if the design is reasonable and easy to use. The installation of traditional pure water machine products is complicated. In the future, when the filter element is changed, the water pipe and the power supply must be removed to replace it. It is too troublesome and easy to malfunction; and the three legs are placed in a row and the ground is unstable; the machine has a rough appearance and the parts are bare. In addition, the machine has a high failure rate; high-voltage direct power supply has many safety hazards.
f. Look at the service: When purchasing, users should consider whether the merchant has the service capability of on-site installation, whether to establish user files and long-term after-sales service capabilities. A pure water machine is a product that requires long-term service. When purchasing, you should also consider whether the business has a stable after-sales service.
Three: water softener and its purchase
1. The soft water machine softens the water. It is a device for removing water and alkali. It uses the principle of ion exchange to remove the hardness (water alkali) by more than 99% without replacing the filter element. All water for the whole family can be softened completely, connected in series on the main pipe behind the water meter, installed in the kitchen cabinet or at the user-specified location.
2, the role of water softener
Water equipment (wall-hung boiler, radiator, water heater, solar energy, etc.) will never scale and block, and the service life will be longer, and the safety hazard and equipment loss caused by scale will be eliminated. Bathroom facilities (glass bath room, mirror surface, bathtub, toilet) Etc.) With soft water, there are no white and rust spots that are difficult to clean. Moreover, women often use soft water to bathe and have a good cosmetic effect. We can save a lot of energy and trouble in our lives.
3, soft water machine purchase notes:
a. Avoid placing the water softener near the heat source or taking necessary thermal insulation measures. It is strictly forbidden to connect to the hot water pipeline or the pipeline that may cause hot water to be poured.
b. When the raw water does not meet the municipal tap water standard, if the mud sand content is large, the residual chlorine exceeds the standard, etc., the pretreatment device should be installed before the soft water machine.
c. There should be enough space between the water softener drain pipe and the drainage floor drain to prevent siphoning.
d. After the installation is completed, the valve head should be adjusted to the backwashing position, and then the inlet valve should be opened. The purpose is to discharge the protective liquid of the resin into the sewer, and then start the immediate regeneration process. During the regeneration, it should be observed that the operation of each program is normal. .
e, water softener should use edible salt (sun salt), insoluble impurities should be less than 1%, it is forbidden to use salt containing various additives.
f. During the operation of the water softener, the user should pay attention to check the salt content in the salt tank. The salt content should reach one-fifth of the height of the salt tank. When the salt surface height is less than one-fifth, the salt should be added in time.
g. Salt bridges are sometimes formed in the salt tank, that is, a space is formed in the lower part of the salt layer. During the regeneration process, the salt cannot be dissolved in water to form a salt solution, the resin is not regenerated, and the soft water machine cannot produce qualified soft water. . Users should always check whether there is a salt bridge at the bottom of the salt tank. If there is a salt bridge, please smash it.
h. In case of long-term deactivation (or when the water pressure is unstable), in order to prevent the water hammer phenomenon, the main valve must be closed to make the water softener water and power off; when using, the electric control type must be turned on first.
i. The optimal inlet pressure of the water softener is 0.2~0.5Mpa. Above 0.5Mpa, the pressure reducing device must be installed.
j. The size and installation position must be designed by the designer before installation; the user needs to keep the floor drain; the electric control type needs to reserve power.
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