5 Things to Know Before Buying ultrafiltration membrane system

25 Aug.,2025

 

5 things you should know before buying water filter and water purifier

5 things you should know before buying water filter and water purifier

Buying a water filter or choosing a water filter. Used to suit your home and factory. If you have problems or are planning to buy water filters and water purifier, RO system, UF system (Ultra Filtration). You should know these things before you go buying. 

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Buying a water filter should know the type of water purifier

1. Small water purifier

It is a water purifier that is suitable for filtering water for family use.

2. Large water filter

This large water filter is mainly used to filter water for use such as bathing, washing dishes, washing cars, or in large quantities such as homes with large families or shops, food courts that use a lot of clean water and the most common is used for filtering tap water and ground water.

3. Water filtration by RO system

RO, officially known as Reverse Osmosis, has to go through a thorough filtration system in all 5 stages, consisting of Sediment Filter, the first filtration and may use sand filter or glass water filter, Carbon Filter to absorb paint. and odor in water, Cation Resin. Anionic resin will capture limestone in the water in the form of calcium, Membrane Filter for separating liquids with many components, and finally Post Carbon adjusts the water to be drinkable. can Filtration with this RO system can filter up to 99.99%.

4. Water filtration system with UV (Ultra Violet)

UV water purification is the filtration of water by using ultraviolet light to sterilize it through the flow of water.

5. Water filtration with UF (Ultra Filtration) system

Water filtration with UF system. In this system, there are 4-5 steps of water filtration. It is developed after UV filter. The advantage is the convenience of filter replacement and saving in maintenance. Maintain than RO system and UV system.

Choose to buy different types of water filters and filters

  • AFM® Glass Filter: This is the glass-based water filter in the case of AFM®. It can be filtered down to 1 micron, is 40 times more effective than sand and can also filter heavy metals, arsenic, cadmium. , copper, nickel and lead, as well as various bacteria and viruses.
  • Manganese Filter: Removes metals, especially iron solutions, and oxygenates the water.
  • Anthracite Filter: Removes sediment and iron rust.
  • Resin Filter: To remove hardness, color, odor and taste.
  • Carbon Filter: To remove color, odor, taste caused by organic matter, sediment, pesticide, detergent.
  • Ceramic filter: when you want to filter bacteria.
  • Coarse filter media: pre-filter
  • Sand Filter: To filter dirt, iron rust, sediment or mud.
  • Wrapped Thread Filter: Filters various organic substances, gravel, rocks, soil, sand with a filtering resolution of 5 microns.
  • Pleated Filter Cartridge: Filters gravel, stone, soil, sand and rust, easy to clean. Has a filter resolution of 30 microns.
  • Membrane filter: Filters out contaminants, viruses, bacteria, and can also filter salt water to be completely fresh. It has a filtering resolution of 0. microns.

Choose to buy different types of water filters and filters

  • AFM® Glass Filter: This is the glass-based water filter in the case of AFM®. It can be filtered down to 1 micron, is 40 times more effective than sand and can also filter heavy metals, arsenic, cadmium. , copper, nickel and lead, as well as various bacteria and viruses.
  • Manganese Filter: Removes metals, especially iron solutions, and oxygenates the water.
  • Anthracite Filter: Removes sediment and iron rust.
  • Resin Filter: To remove hardness, color, odor and taste.
  • Carbon Filter: To remove color, odor, taste caused by organic matter, sediment, pesticide, detergent.
  • Ceramic filter: when you want to filter bacteria.
  • Coarse filter media: pre-filter
  • Sand Filter: To filter dirt, iron rust, sediment or mud.
  • Wrapped Thread Filter: Filters various organic substances, gravel, rocks, soil, sand with a filtering resolution of 5 microns.
  • Pleated Filter Cartridge: Filters gravel, stone, soil, sand and rust, easy to clean. Has a filter resolution of 30 microns.
  • Membrane filter: Filters out contaminants, viruses, bacteria, and can also filter salt water to be completely fresh. It has a filtering resolution of 0. microns.

Service Life of Filters

  1. AFM® glass water filters or glass filters last up to 15 years without filter replacement.
  2. Carbon filter 1-2 years
  3. Anthracite filter 1-2 years
  4. Manganese filter 1-2 years
  5. Resin filter 1-2 years
  6. Pleated filter 3 – 6 months
  7. Wrapped thread filter 3 – 6 months
  8. Carbon filter 1-2 years
  9. Resin filter 1-2 years
  10. Ceramic filter 1 – 1 year and a half
  11. Membrane filter 1 – 1 year and a half
  12. Post Carbon 2-3 Years

Principles for buying water filters and tanks

  • If water condition is normal tap water, you should choose an RO system or a UF system because these systems are designed to work directly with tap water.
  • If the water to be filtered is groundwater, the water condition should first be analyzed to determine whether it is acidic/alkali and how much limestone is presented. Then, select water tank and filters that are suitable for such water conditions
  • There are different grades and prices of filters and water tanks. Prices ranging from hundreds to tens of thousands, some are produced in Thailand, some are imported, the price will change according to the quality of the product.
  • Cost-effectiveness, in this case one should look to the future for many years to come, for example if we currently install at a low cost but we have to maintain or change frequently, especially filters that need to be replaced every 6 months or 1 year. So, it would be wise to choose a water purifier that has a longer service life and is more cost-effective than those that need frequent replacement.

Warranty and after-sales service

Generally, water purifiers and water tanks are not warranted for their respective parts as they are related to the water conditions in each area in which they are being used. However, there will be a guarantee in the service life of the machine itself of durability for certain period of time (e.g., 1 year, 2 years or more depending on brand names etc.)

If you buy a filter tank or water filter from a company that has a storefront, then after-sales service is often included. In addition to the after-sales service, costs such as filter/water tank replacement or installation might be occurred. If anyone has studied and learned how to change the filter or water tank, this will help to save time and cost.

What is Ultrafiltration? (& How UF Membranes Work)

Today’s water filtration market is bursting with effective, high-quality purification solutions. It can be difficult to know which option is for you, especially when there are so many to choose from.

It’s wise to be aware of your choices before you make a purchasing decision, so you know for certain that you’ve made the right choice for your budget and requirements. This guide will focus on ultrafiltration, a purification process that offers a particularly impressive range of benefits.

???? How Does Ultrafiltration (UF) Work?

What is ultrafiltration? It’s a membrane filtration process that sends water through a hollow fiber membrane at a high pressure.

Only water particles and a select few impurities are small enough to pass through the membrane, which consists of thousands of tiny pores. As a result, contaminants that are larger than water particles (high molecular weight solutes) are left behind on one side of the membrane, while smaller particles (low-molecular weight solutes) pass through the membrane pores to the other side.

Ultrafiltration drinking water systems are connected up to the cold water line beneath your kitchen sink. The pressure of the water promotes a good flow of water through the ultrafiltration (UF) membrane, ensuring thorough contaminant removal. This type of microfiltration system doesn’t have a tank for water storage and doesn’t produce wastewater. It usually requires its own dedicated faucet to maintain water quality on its journey into your drinking glass.

It’s easy to confuse ultrafiltration with reverse osmosis, because both water treatment methods are very similar. However, reverse osmosis offers a more thorough filtration process than ultrafiltration. Alongside the hollow fiber membrane, a reverse osmosis system also sends water through a number of filtering cartridges, including a sediment cartridge and an activated carbon filtering cartridge.

???? What Does Ultrafiltration Remove from Water?

Ultrafiltration is ideal for targeting smaller contaminants that slip through most water filters, thanks to its tiny pore size of 0.1-0.01 microns. This mechanical microfiltration system can filter water all the way down to 0.025 microns.

You can utilize ultrafiltration to effectively remove bacteria and some viruses from drinking water, as well as some organic suspended solids, turbidity, and some (but only a small percentage of) natural salts and minerals.

???? When Are UF Ultrafiltration Systems Used?

Ultrafiltration systems have a number of industrial uses, such as in the food and beverage industry, and in the treatment of water used in factories and other manufacturing establishments. This type of water treatment can also be carried out at home.

ShekeSaisi are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

You can purchase point-of-use ultrafiltration membranes that can be installed underneath your kitchen sink. They can be used to provide clean drinking water from your faucet, and offer a fast, simple solution compared to the majority of the water filtration methods available today.

✅ Benefits of UF Membranes

No Chemicals Required

To eliminate microorganisms from water, a chemical disinfectant is usually required. However, because the ultrafiltration membrane pore size is small enough to get rid of pathogens, it makes for an effective chemical-free alternative.

Reduced Operating Costs

Ultrafiltration membranes have an affordable up-front price and don’t cost much to maintain. You’ll need to replace the membrane periodically, but this filtration solution typically has a lifespan of 5-7 years.

Removes Microorganisms

It’s hard to find many systems that are capable of removing pathogens such as bacteria. A UF membrane, however, can effectively remove these contaminants – though some viruses might remain.

No Water Waste

Around 95% of water is used during ultrafiltration, as some water is used for backwashing the system. Because effluent water is recycled, this purification treatment is one of the more environmentally friendly options available.

Compact Size

Ultrafiltration membranes are relatively compact, making them less of an invasive installation in a home or for business use. They don’t typically take up too much under-sink space, though this depends on whether they’re combined with additional filtration solutions, like pre-filtering cartridges or RO units, for example.

❌ Disadvantages of UF

Frequent Backwashing & Cleaning May Be Required

If your water source is particularly contaminated, you might need to clean and backwash your ultrafiltration (UF) membrane frequently.

Membrane Replacement Required

As well as cleaning and backwashing the ultrafiltration membrane, you’ll also need to replace it as recommended by the manufacturer. Failing to replace the membrane will result in the membrane being unable to do its job properly, and contaminants may not be effectively removed.

Some UF membranes come with their own pre-filter, which is used before the membrane for the removal of larger particles that could damage the screen. Having a pre-filter means you’ve got something else to maintain, and these filters need replacing frequently, too.

Can’t Remove Dissolved Contaminants

Perhaps the biggest setback of an ultrafiltration system is that it can’t be used to treat dissolved contaminants in water. You would require a conventional activated carbon filtering cartridge alongside the system if you wanted to treat dissolved contaminants too. Additionally, while ultrafiltration solutions can effectively remove bacteria, they may not be able to completely remove viruses.

???? UF Membrane vs Reverse Osmosis

Both reverse osmosis and ultrafiltration are two processes that use high-pressure membrane filtration technology, which is why they’re often confused with one another.

However, both processes of microfiltration have their own standout features that enable them to produce slightly different results.

  • A reverse osmosis system uses a semipermeable membrane, which has a smaller pore size of around 0. microns and removes a very high concentration of contaminants in drinking water.
  • An ultrafiltration (UF) membrane filtration uses a hollow fiber membrane design which prevents organic suspended solids and microscopic materials from being able to feed or pass through the membrane.

Reverse osmosis is a more thorough process for a broad range of contaminant removal, eliminating more than 99.9% of contaminants during clean water production, including lead and VOCs (volatile organic compounds).

An ultrafiltration system, on the other hand, doesn’t remove dissolved solids and salts from water; only substances that are suspended (or those that float on the surface) in the water. However, what makes this filtration treatment better than the majority of water filters is that it works on a microscopic level.

You can find out more about the differences between ultrafiltration and reverse osmosis processes in our ultrafiltration vs reverse osmosis comparison guide.

???? UF Membrane Vs Nanofiltration

There’s another type of water treatment that can remove smaller substances from water, called nanofiltration. Like ultrafiltration, nanofiltration can filter out protozoa, bacteria and viruses in water. It can also filter organic matter, salt and natural minerals.

However, nanofiltration isn’t capable of eliminating particle types that can dissolve in water. Nanofiltration typically uses a membrane with a pore size of 0.001 microns. A nanofiltration unit removes slightly more particle ions than a UF membrane, but this technology isn’t quite as capable as reverse osmosis in terms of contaminants removed.

Are you interested in learning more about ultrafiltration membrane system? Contact us today to secure an expert consultation!