which water filter removes the most contaminants?

Outdoor water filtration system

When choosing a water filter, an important indicator that consumers often pay attention to is the number of pollutants that the water filter can remove, because water quality directly affects the health of the family. Different types of water filters use different filtration technologies and filter element designs, so their effectiveness in removing pollutants from the water is also different. To find a water filter that can comprehensively remove contaminants from water, you need to choose the most suitable product based on your personal needs and water quality characteristics.

The harm of water pollution to human health and the environment

Hazards to human health

Disease transmission: Contaminated water may contain bacteria, viruses, parasites, and other pathogens, and drinking or coming into contact with this water can harm human health.

Heavy metal poisoning: Industrial wastewater and mine emissions may contain heavy metals such as lead, mercury, and cadmium. These heavy metals can accumulate in the human body and harm health.

Impact of chemical substances: After pesticides, fertilizers, plastics, and other chemical substances pollute water sources, they will enter the human body through drinking water or the food chain, which will harm people's health.

Harm to the environment

Damage to water ecosystems: Pollutants can cause eutrophication of water bodies, excessive algae reproduction, consumption of oxygen in the water, death of fish and other aquatic organisms, and destruction of ecological balance.

Reduced biodiversity: Water pollution can lead to the extinction of some sensitive species, thereby reducing biodiversity and affecting the stability of ecosystems.

Land pollution: Polluted water irrigating farmland will cause soil pollution, affect crop growth, and even contaminate groundwater, creating a vicious cycle.

What is the function of a water filter?

The function of a water filter is to ensure safe and healthy drinking water by removing impurities from the water. Due to current pollution and water quality issues, the safety and hygiene of ordinary tap water are often questioned. Therefore, water purifiers play a very important role in modern households. The following is a detailed introduction to the role of water filters:

1. Remove impurities from water: Tap water often contains various bacteria, viruses, heavy metals, organic compounds, etc. These substances have adverse effects on human health. Water filters can effectively remove these pollutants and prevent them from entering the human body through a variety of filtration technologies, such as activated carbon filtration, reverse osmosis, etc.

2. Improve taste and quality: Tap water often contains residual chlorine, odorous substances, etc. These substances will make the water taste impure and even bring an odor. Water filters can remove these odor substances and provide fragrant, sweet drinking water, making people more willing to drink water, thereby promoting good health.

3. Prevent the spread of water diseases: Tap water often contains various bacteria, viruses, and other microorganisms, which can cause intestinal diseases, gastroenteritis, etc. By killing these microorganisms and filtering their molecular-level residues, water filters can effectively prevent water source pollution and reduce the incidence of related diseases.

4. Improve the quality of cooking ingredients: Water is an important component of cooking, it can affect the taste, texture, and color of ingredients. The water filter can remove impurities and odor substances in the water, provide a pure water source, make the ingredients more authentic, and increase the deliciousness of the dishes.

5. Reduce the cost of buying bottled water: Nowadays, many people are accustomed to buying bottled water for drinking, which not only increases the financial burden but also brings a lot of plastic waste. The water filtration system can provide high-quality drinking water, replace bottled water, and reduce waste and environmental pollution from the source. In addition, the water purifier is also a time-saving and money-saving option, because it does not need to buy water frequently, it only needs to replace the filter element regularly, and the water purification effect is better, allowing families to enjoy better drinking water.

Activated carbon water filter

The working principle of the activated carbon filter is to use the adsorption effect of activated carbon to remove organic substances, residual chlorine, odor substances, etc. in the water, thereby improving water quality. Activated carbon filter not only has a good water purification effect but also is easy to operate and use. It is a common water treatment equipment. By understanding how activated carbon filters work, we can better use and maintain this equipment to ensure its normal operation and water purification effect.

Organic matter: Activated carbon can adsorb a variety of organic matter in water, including pesticides, petrochemicals, dyes, disinfection by-products, etc. This organic matter may come from industrial wastewater, agricultural discharge, and urban sewage. Activated carbon removes this organic matter from water through physical adsorption.

Inorganic substances: Activated carbon can remove some inorganic substances in water, such as heavy metal ions (such as lead, mercury, cadmium, etc.), fluoride, sulfide, and nitrate. The pore size and surface properties of activated carbon give it high adsorption capacity and selectivity, and can effectively remove these harmful inorganic substances.

Chlorine disinfection by-products: In the treatment process of tap water, chlorine disinfection is a commonly used disinfection method, but it will produce some harmful by-products, such as trihalomethanes, haloacetic acids, etc. Activated carbon can absorb these chlorine disinfection by-products and reduce their concentration in water.

Odor and color: Activated carbon has good adsorption properties and can remove odor and color from water. These odors and colors may come from industrial wastewater, algae growth, humus, etc. Through the adsorption of activated carbon, the clarity and taste of water can be improved.


How ultrafiltration works can be boiled down to two main processes: screening and interstitial fluid transfer.

The first is the screening effect. The ultrafiltration membrane has a small pore size and can effectively intercept macromolecular substances, such as proteins, colloidal particles, etc. Due to their large size, these substances cannot penetrate the ultrafiltration membrane and are thus separated.

The second is interstitial fluid transfer. During ultrafiltration, the liquid passes through the pores of the ultrafiltration membrane to form a fluid layer on the membrane surface. Solutes and solvents in this layer can pass through the micropores of the ultrafiltration membrane, thereby achieving separation. Smaller molecular substances, such as dissolved salts and small organic molecules, can pass through the pores and pass through the ultrafiltration membrane to the other side.

The separation effect of ultrafiltration mainly depends on the pore size of the ultrafiltration membrane. The smaller the pore size, the larger the molecules that are trapped. Therefore, ultrafiltration is often used in fields such as protein separation and concentration, colloidal substance separation, and wastewater treatment.

Nano water filter

The nanofiltration principle of water purification filters is to filter harmful substances and microorganisms in water through nanometer-level pores. A common nanofiltration filter material is graphene.

In the water purification filter element, water passes through a special filter, which filters out impurities with a diameter greater than 100 nanometers in the water, leaving behind water molecules and microorganisms with a diameter less than 100 nanometers. Then, the water passes through the nano filter element. The pore size in the nanofilter element is only a few nanometers in size. It can filter out bacteria, viruses, and harmful chemicals that are larger than it. However, water molecules that diffuse quickly will pass through the nanopores, ultimately achieving the purpose of filtering out water molecules. Complete filtration of harmful substances and microorganisms to achieve true water purification. In the process of the nanofiltration principle, there is no need to use any chemicals to purify water.

Reverse osmosis water filter

A reverse osmosis water filter is a device that uses reverse osmosis technology to filter impurities and pollutants in water. Its working principle is as follows:

1. Filtration pretreatment: The water first passes through the coarse particle pretreatment filter to remove larger particles, sediment, suspended matter, etc.

2. Pressure increase: The water after passing through the coarse particle pretreatment filter enters the high-pressure pump, which provides a certain pressure to push the water through the reverse osmosis membrane.

3. Pretreatment filter: Before the water passes through the high-pressure pump, it needs to further remove residual chlorine, odor, and other organic substances in the water through an activated carbon filter.

4. Reverse osmosis membrane: Water enters the reverse osmosis membrane through the pressure provided by the high-pressure pump. The membrane has micropores and can effectively intercept tiny impurities such as inorganic salts, heavy metals, bacteria, and viruses in the water, thereby achieving the purpose of purifying water quality.

5. Separation: After filtration by the reverse osmosis membrane, the pure water in the water flows out through the membrane pores, while impurities and pollutants are trapped on the other side of the membrane.

6. Discharge: Due to the high concentration of pollutants during the reverse osmosis process, part of the water is trapped on the reverse osmosis membrane. This part of the water is called concentrated water, and it also needs to be discharged to ensure the normal operation of the membrane.

7. Storage: After the purified water flows out through the membrane, it enters the water storage tank for storage, waiting for use.

Through the above working principles, reverse osmosis water purifiers can effectively remove bacteria, viruses, heavy metals, and other harmful substances in the water, providing clean and safe drinking water and domestic water.

Based on the above knowledge, you must understand the problem of "which water filter removes the most pollutants". The work mentioned above principles and removal of activated carbon water filters, ultrafilters, nano water filters, and reverse osmosis water filters The effects are introduced in detail. Among them, reverse osmosis water filters are one of the few processes that can cleanly convert wastewater into drinking water. Its capability exceeds the capabilities of most other water purification technologies, and ITEHIL portable reverse osmosis The water filtration system uses PP cotton + activated carbon + reverse osmosis membrane filtration and an electric self-priming pump. The filtration efficiency is faster and it is worth choosing.

How the four major water filters work

What are the frequently asked questions?

1. What is the best water filter?

The best water filter should have high-efficiency filtration capabilities and can effectively remove various pollutants in the water, including heavy metals, bacteria, viruses, chlorine, odors, and other harmful substances, ensuring the safety and health of drinking water. In addition, the filter element of the water filter should have a long life, the water filtration speed should be fast, and the water filtration cost should be low to provide convenient, economical, and fast water purification services. Water filters suitable for different scene needs should also be considered. Ease of use and maintenance are also important factors in choosing a water filter.

2. Can water filters remove chemicals?

Ordinary water filters may not be able to completely remove certain chemicals, and specific water filters or other water treatment equipment are required to effectively remove them. However, the ITEHIL reverse osmosis water filtration system can be removed. The ITEHIL portable water filtration system can remove bacteria, viruses, parasites, toxic metals, pesticides, polyvinyl chloride, PFAS, etc.

3. How to filter tap water at home

There are several methods you can use to filter your tap water at home. A common method is to install a faucet hanging filter, through which impurities and odors are removed from the water. Another option is to use a portable reverse osmosis water filter, also known as the ITEHIL portable water filtration system, which can be placed on the kitchen counter and remove impurities and contaminants from tap water through a filter element.


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