Water Purifier

Water purifiers are made in 3-to-8-stage models and can remove any harmful pollutants such as microorganisms, nitrates, unpleasant odors, etc., and provide completely healthy water.
In the following content, we have provided all the information about how to choose and buy any type of water filtration and purification system.

Water Purifier Expert Buying Guide and Price List

Today, the pollutants in city water and other water supply systems have increased, and in some areas, tap water has an unpleasant taste and smell, which can have various reasons, including the inability to remove pollutants by industrial treatment plants and the addition of pollutants.

New to the water inside the worn pipes of city water transmission, so using a whole-house water purifier is no longer a choice, but a necessity of life.

In general, whole-house water purifiers have under-sink, tabletop, wall-mounted, and even overhead sink types.

Water purifiers are produced and supplied in different models from different brands (such as Softwater water purifiers, Water Safe, etc.), each of which has specific features and characteristics, and there are also very important points for preparing a water purifier.

We will describe practical and useful tips related to the types of water purifiers, the type of functions, features, prices, and how to choose and buy them, so stay put.

Types of City Water Pollutants

Currently, water resources contain many pollutants, such as industrial and domestic pollution, mud, parasites, bacteria, nitrate, pathogenic microorganisms, etc., which are very harmful to human health. Sometimes the chlorination flow of city water treatment does not disappear completely in times of use.

Therefore, to completely remove chemical pollutants soluble in water and suspended particles such as microbes, bacteria, nitrates, and water hardness a whole-house water purifier equipped with membrane filters, fiber filters, etc. is used.

The water purifier not only completely removes water pollutants, but also by using filtration and adding ions to the water (which we will discuss in detail below), makes the water healthy, light, and refreshing.

By using a water purifier for drinking and cooking, in addition to improving the taste and quality of food, the health of yourself and your family is guaranteed.

What is the Most Dangerous Cause of Cancer in Water?

Nitrates are one of the most dangerous substances in water, which are considered to be one of the main carcinogens, especially stomach cancer, so in order to remove nitrates from drinking water a reverse osmosis 6-to8-stage whole-house water purifier is needed.

In fact, the reverse osmosis system in the water purifier is made up of membranes that have very small nanoholes that only water molecules can pass through, and particles larger than water molecules get filtered.

The whole-house water purifier equipped with reverse osmosis technology provides the consumer with healthy, light, and pleasant water by removing the impurities and hardness in the water.

Why Whole-House Water Purifiers Are Necessary

Nitrate is one of the most dangerous water pollutants and is not removed by the city water treatment equipment, a water purifier equipped with advanced filters is needed to remove this nitrate completely.

In the city water filtration plants, chlorine is added in order to kill bacteria and disinfect water, it is directly related to many cancers and fetal abnormalities, as well as heart diseases and asthma. The problem is that microorganisms are killed by chlorination but remain in water, which is another source of pollution in water.

Usually, purified water from city water filtration plants passes through old and rusty pipes for kilometers, which causes the purified water to be re-polluted to some extent.

As chlorine gas in swimming pools or bathrooms is harmful to human lungs and contact of chlorine with skin and hair causes hair loss and damage to the skin, it is recommended to remove chlorine in tap water using a water purifier.

In order to maintain the quality of water in mineral water bottles, preservatives such as fluoride are used, which is a chemical factor and its continuous consumption is also dangerous.

Boiling the water will never eliminate the various impurities in the water, and it will not eliminate the particles dissolved in the water, but the more it is boiled, the higher the concentration of salts and nitrates increases and causes many diseases, therefore, despite this very wrong belief among some people, boiling the water does not improve the quality and purification of it.

Considering all the above cases, it can be said that nowadays, one of the essentials and necessities of life is to use a device that we can be sure will provide us and our family with safe and high-quality water, so there is no other choice but to use water purifiers.

Mineral Water Vs. Purified Water

There are some differences between mineral water and drinking water:

Solutes: The salts and preservative compounds in mineral water are deposited in the body after continuous use and cause diseases such as kidney stones.

Expiration Date: Mineral waters in Europe only have a one-week expiration date, but mineral water bottles available in Iran have an expiration date of up to 6 months!

Preservatives: Mineral water-producing companies add half a milligram of fluoride to mineral water for each liter. This tasteless and odorless preservative is very dangerous and carcinogenic to the human body if used continuously.

When fluoride enters the body, it occupies the environment of the tissue and causes the interstitial water to leave, and the body automatically creates a slimy layer that enlarges the tissues over time, which is called retention.

However, the output water of the water purifier is without preservatives and completely harmless and suitable for the body.

Maintenance: Mineral waters are supplied in plastic packages that have special storage conditions, for example, mineral water packages should not be exposed to direct sunlight, and the storage conditions of mineral waters available in Iran are not standard.

Mineral water plastic packages release their polymer materials in the sunlight and dissolve in water, polymer materials are also very dangerous for human health, while water purifiers do not add any materials to the water.

Economic Efficiency: Using a water purifier in homes and apartments provides you with healthy and light water, which is very valuable in terms of economy, quality, and health compared to mineral water bottles.

The continuous purchase of mineral water bottles compensated for the cost of a water purifier within a few months. Buying a water purifier is a very smart choice from an economic point of view.

Nature Friendliness: Using mineral water bottles daily is very harmful to nature, as we should not use plastic and single-use materials to such extents. We must help preserve nature and the health of the planet.

Water Purifier General Specifications

Before buying a water purifier, you should know and pay attention to the various things that determine the quality and capabilities of the device. First, know your needs and then choose the appropriate device.

In the following content, the important and general characteristics of the water purifier are mentioned.

Types of Water Purifier Mechanisms

There are various mechanisms for cleaning water using a water purifier, some of which are outdated and do not have the necessary efficiency.

The most up-to-date mechanism in new water purification systems is reverse osmosis, this method is done using a filter called membrane, inside which an 8 or 13-layer membrane filter is placed to pass only pure water.

Solvents such as chemicals, nitrates, or salt soluble in water cannot pass through this filter, which is why the efficiency of the reverse osmosis method is very high. Water purifiers with reverse osmosis mechanisms also have a pump to adjust the water pressure as well as a tank to store the purified water.

Another practical method in the ultrafiltration (UF) water purifier, or in simpler terms, is the use of more filters. The more filters are placed in the water path, the lower the amount of pollutants in the output water. They use tightly packed filters to keep out chemical contaminants, sediments, etc.

Another mechanism that is used for the water purification systems is the nanofiltration method. In this method, nano filters are used to absorb pollutants, and it can be said that its operation is similar to ultrafiltration with only the size and types of filters being different.

Under-Sink Water Purifier Filters and Components

There are 6 types of filters used in under-sink water purifiers:

1. PP Filter: The function of this filter is to remove sediment, sand, and iron rust
   
   
2. Carbon Granular Filter: It removes organic substances, chlorine, and particles up to 5 microns
   
   
3. 1-micron Filter: It removes particles up to 1 micron
   
   
4. Membrane Filter: It is responsible for removing all chemical and organic substances such as nitrates.
   
   
5. Post Carbon Filter: Odor and taste removal filter
   
   
6. Mineral Filter: This filter is used to remove some of the water's mineral if the hardness of the water is high.
   
   

Under-sink water purifier other components are:

• Pressure Switch
• Electropump
• UV lamp
• Water Inlet Valve
• Storage Tank
• Storage Tank Manual Valve
• Storage Tank Pressure Adjustment Valve
• Water one-way valve on the outlet
• TDS 16 Adjustment Valve
• Solenoid Valve
• Water Pressure Gauge
• AC to DC Transformer
• Sink-Mounted Valve
  
  

Note: In under-sink water purifiers, a storage tank is used to store purified water and adjust the pressure of the outlet valve.

Water Purifier Stages

The operation of water purifiers varies according to the number of stages and their quality, currently, there are 3-to-8-stage water purifiers available.

In devices with a higher number of filtration stages, more filters can be installed and more pollutants can be absorbed, therefore the quality of the device's output water will be higher.

Most of the world's famous companies produce and market two models of 6- 6-stage and 8-stage water purifiers as they are much more popular.

Usually, the 3rd or 4th stage of filtration in the water purifier belongs to the reverse osmosis mechanism (membrane filter), and the rest of the filters are placed after that.

Different Types of Filters in Water Purifiers

Another very important subject that you should know when buying a water purifier is the type and quality of its filters.

The highest number of filtration stages of a water purifier is 8 stages and there are a maximum of 8 types of filters, but for devices with fewer stages, some filters are removed, and we will mention the types of water purifier filters below:

1. Carbon Granular Filter: These types of filters are used to improve the taste of water, pollutants such as pesticides or chlorine that affect the taste of water are absorbed by this filter, and tasteless/odorless water is obtained.
   
   
2. Carbon Block Filter: The carbon block filter works similarly to the granule filter and completes its process of making the water clear and also filtering free carbon particles in the water.
   
   
3. Sediment Filter: As its name suggests, it is used to remove sediment, rust, etc., and it is generally made of polypropylene.
   
   
4. Membrane Filter: It is a very important filter that is in charge of the reverse osmosis action.
   
   
5. UV Filter: It is the ultraviolet filter that destroys microorganisms and bacteria in water through radiation.
   
   
6. Alkaline Filter: This filter reduces the acidity of the water and provides alkaline water rich in useful properties.
   
   
7. Mineral Filter: This filter is used to remove some of the water's minerals if the hardness of the water is high, although it does not remove all the minerals. This filter is usually placed at the last stage.
   
   
8. Infrared Filter: This filter also does the job of oxygenating the water.
   
   
   

Water Purifier Stages Explained

The number of filters installed in household water purification devices alone does not indicate the high quality of the water coming out of the water purification device, but in addition to the number and stages of purification, the type of filters and the technology used in them are also very important in improving the quality of the water coming out of the device.

It has water purification. (Pay attention to the issue of the originality of the filter of the household water purifier, which is completely effective in both the quality and the price of the device, and do not sacrifice the quality of the water used for the low price of some household water purifiers that are practically ineffective).

1. First stage: In this stage, mud, sand, and other suspended pollutants are removed from the water by a 5-micron fiber filter.
   
   
2. Second stage: In this stage, the active carbon filter installed in the water purifier is responsible for removing gases, and chemicals contained in pesticides and insecticides.
   
   
3. Third Stage: A 1-micron active carbon filter removes chlorine and substances larger than 1 micron, in case anything has passed through the two previous filters.
   
   
4. Fourth Stage: Membrane filter (RO), which is the main filter of the household water purifier, is composed of several layers of semi-permeable membrane around a central tube, it traps all elements soluble in water (nitrate, lead, calcium, etc.) Purifies 80-to-98%.
   
   This filter has the ability to remove harmful elements up to one-thousandth of a micron (organic and inorganic substances dissolved in water and microbiological pollutants) and also has the ability to remove water hardness.
   
   
5. Fifth Stage: In this stage, the smell and taste that the water may have acquired after being in the tank for some time is lost.
   
   
6. Sixth Stage: The UV filter installed in this stage is responsible for disinfecting the water by irradiating ultraviolet rays into the water.
   
   
   

Lifetime	Function	Picture	Filter Type	Stage
6 months	Removes sediment and large particles from water		Polypropylene(PP)	1
1 year	Removes chlorine, taste, and odor from water. It can also remove some organic chemicals		Active carbon	2
1 year	Removes arsenic and particles up to 5 microns		Granular carbon	3
2 years	Removes dissolved solids from water, including minerals, salts, and heavy metals. Reverse osmosis (RO) is the most common type of membrane water filter		Membrane water	4
2 years	Installed after a membrane filter to improve the taste and odor of water		Post-carbon water	5
2 years	Adds minerals back to water that a membrane filter has filtered		Mineral water filter	6
2 years	Raises the pH of water to make it alkaline		Alkaline water filter	7
2 years	Kills bacteria and viruses in water		Ultraviolet(UV)	8

Water Purifier UV Lamp Performance

Ultraviolet rays (UV) consist of a reflective chamber and a lamp producing UV rays. By passing around this lamp, the water absorbs the ultraviolet rays and causes the destruction of pathogenic substances in the water.

Bacteria, viruses, and other microorganisms in the water are destroyed due to the absorption of the energy of the ultraviolet rays caused by the UV lamp, as a result, all dangerous microorganisms in the water are destroyed and their growth and reproduction are prevented. The UV lamp filter is very effective in disinfecting and sterilizing the purified water.

Water Purifier Reverse Osmosis Performance

The main filter for removing harmful organic and chemical elements in water is the reverse osmosis filter. The reverse osmosis filter consists of several layers of semi-permeable membrane wrapped around a central tube.

This membrane filter has pores of 0.02 microns and water-soluble impurities can't pass through the pores of this membrane, therefore, on one side of the membrane, there will be pure water that enters the central pipe and is directed to the water outlet.

On the other side of the membrane layers, there is impure water that is directed to the sewer. With the reverse osmosis method, microbial and chemical contaminations are reduced by 90-to-98%. Nitrate, arsenic, lead, mercury, and other water-soluble impurities and harmful metals are removed from the water at this stage.

Factors Affecting the Performance of the Reverse Osmosis System

Several factors might affect the function of the reverse osmosis system:

• Inlet water pressure
• Water temperature
• Type and amount of total dissolved solids (TDS) in tap water
• The quality of the filters and membranes used in the RO system
• It should also be noted that the reverse osmosis membrane filter can remove impurities and particles larger than 0.001 microns.
  
  

Water Purifier Installation Location

The dimensions and volume of the water purifier are very important things that you should consider before buying it, and also pay attention to the space where you want to place the device. As mentioned before, water purifiers are produced in three types:

1. Under-Sink Whole-House Water Purifier: This one is the most widely used type. As it is known, this type of water purifier is placed in the cabinet and under the sink completely hidden, and it also works with electricity.
   
   
2. Tabletop Water Purifier: Tabletop water purifiers are produced in two models, with and without a tank, a tankless tabletop water purifier is a small device that is installed on the faucet and gives you purified water whenever you open the faucet.
   
   But the type with a tank is such that you have to re-fill it every time the water in the tank runs out. This model of tabletop water purifier has two types, electric and non-electric, which are selected according to the type of use.
   
   
3. Wall-Mounted Water Purifier: The wall-mounted water purifier also functions like tabletop ones, and some models can also be installed on the refrigerator, which is suitable for the summer season.
   
   Wall-mounted water purifiers are generally produced in two models, smart and regular.
   
   

Avoiding Cheap Water Purifiers

Recently, there have been introduced in the market of water purification devices that are not of good quality and do not meet the necessary standards for the complete removal of pollutants and harmful substances in water. But due to the reasonable prices they have set for their sale, they may attract the opinion of some customers.

But the fact is that the water purifier is related to human health and the cost you pay for its purchase is an investment for you and your family. To achieve pure and clear water, the water purifier must have at least 5 main membrane filters, fiber filters, active carbon filters, solute filters, etc.

Factors to Consider Before Buying a Water Purifier 

There are several key factors you better keep in mind before buying a water purification system including:

Water Purifier's Capacity

A point that is usually noticed by buyers of whole-house water purifiers is the capacity of the water purifier tank.

It should be known that, firstly, the volume of the tank of the device has no relation or effect on the device's ability, and secondly, the volume of the tank should be only proportional to the consumption of the consumers.

3 to 5 liters are the most common types and the maximum is 6 liters and the water in the tank needs to be refilled daily.

Water Purifier's Maintenance

Water purification requires regular and continuous care to maintain its performance. Among the things that are very important in maintaining the functionality of the device are the timely replacement of cartridge filters, reverse osmosis membranes, and other possible components that are mentioned in the user manual.

Water Purifier's Size

To choose the right water purifier, check things like the dimensions and sizes of the device, the place of installation and operation, the duration of changing or washing the filter, and the installation cost.

Water Purifier's Filter

The time to change the filters of water purifiers is different based on the water hardness. During the installation, the necessary and required explanations about when and how to change the filter are provided or you can simply refer to the device's user manual.

Water Purifier's Selection

Buying a high-quality water purifier is a guarantee of your health and the cost you pay to buy it is actually your investment for the health of your family. Water purification is not a choice but one of the necessities of providing health to families.

Don't waste your money on cheap and low-quality water purifiers, by making the right choice you will be able to get the most out of your water purifier with a great after-sales service.

The Purity and Clarity of Water

The use of a whole-house water purifier can help you stay healthy, improve the quality and taste of your food and beverages, enhance your digestion, hydrate your skin, eliminate toxins, etc.

One of the most interesting benefits of water purifiers is that the water they produce can be used to prepare tea and coffee, improving the taste of anything you brew or cook with it.

Buying a Water Purifier

Just like many other appliances that you buy for your home or workplace, be careful when buying a water purifier. You should examine the types of water purifiers from different aspects such as the quality and number of water purification stages, compare the brands with each other, and pay attention to the features, filtration type, and performance of each one.

Here at the DamaTajhiz HVAC store, technical information on dozens of models of water purifiers, from reputable brands with original warranties, has been presented for you to enjoy a good and smart shopping experience.

Water Purifier Price

Water purifiers come in different models with different prices according to the stages of purification, brand, quality, and capacity, after examining and finding the product that suits you the best, you can proceed to purchase because all the water purifiers offered in DamaTajhiz HVAC store have reasonable prices, and the discounts desired by consumers have already been included.

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