Point-of-Use Water Purifier

A POU water filter system is typically a combination of several different technologies in specific sequences such as string-wound sediment filters, redox and KDF media filters, RO membranes, UV disinfection, and remineralization (particularly after RO). POU systems remove hazardous contaminants that exceed regulation limits including organic 정수기렌탈 chemicals, metals, toxins, disinfection byproducts, and more.

Sediment Filter

A sediment filter is a point-of-use (POU) water treatment device that uses a filtration process to remove dirt, clay, silt and rust particles from your water. It is a first-line of defense against the introduction of solid contaminants into your well groundwater. It will also prevent abrasive debris from damaging other filters in your system such as the UV light or reverse osmosis membrane.

These filters use expansive surface areas and a micron-rated capacity to catch the bulk of contaminant particles. Some designs feature pleated cartridges that offer even more surface area. Most use a radial flow design that forces the water to pass through walls of filter media that get thicker as it approaches the core, capturing smaller and finer particle matter. Some sediment filters use a depth gradient to filter out suspended solids, otherwise known as turbidity.

String-wound sediment filters, a type of melt-blown filter, have a central cartridge wrapped in string or other tightly wound material. The string is graded with varying thicknesses from thinner string near the center to the thickest at the outside of the filter. This creates a matrix of graded density that traps the largest particles as the water passes through it, then progressively traps smaller particles as it moves deeper into the filter. When a string-wound sediment filter becomes overloaded, the strings can shift and loosen, releasing the sediment into the water. This is an indication that it is time to replace the filter.

Activated Carbon Filter

Activated carbon filters remove impurities from fluids or gases through a process called adsorption. The massive surface area of activated carbon creates a huge number of places where molecules can be trapped. One pound of activated carbon has a surface area roughly equal to 100 acres!

Unlike other water treatment methods, carbon filters remove contaminants using adsorption rather than chemical reactions. For this reason, they are able to remove many contaminants that other systems cannot.

In addition to removing bad tastes and odors, carbon filters are the most effective method for removing pharmaceutical residues from drinking water. These compounds are released into water sources by people using prescription and over-the-counter drugs, as well as by agricultural runoff from livestock manure. Long-term exposure to these chemicals can cause serious health problems.

Lastly, carbon filters are very good at removing harmful chlorine byproducts from water. These compounds can form when chlorine in municipal drinking water reacts with naturally-occurring organic molecules in the water supply. The result is a group of toxic substances known as trihalomethanes (THMs), volatile organic compounds, and haloacetic acids that can have many negative effects on health.

Activated carbon is also very effective at removing PFAS chemicals such as PFOA and PFOS, which have been used in the manufacture of fire-fighting foams, nonstick cookware, paper packaging for food, and other stain and water-resistant synthetic fabrics and coatings. Look for a filter that is NSF certified to remove these chemicals from your water.

Reverse Osmosis Membrane

The heart of any reverse osmosis system is the membrane, which filters out the vast majority of dissolved contaminants. In addition to removing toxins like chlorine and lead, the membrane also strips harmful bacteria and organic materials out of your water.

During reverse osmosis, pressure forces saltwater through a semipermeable membrane, which separates the saline water from the fresh water. Water molecules naturally want to find equilibrium on both sides of the membrane, and osmosis helps water move from the side with less concentration to the more concentrated side. The result is clean drinking water, which is known as permeate. The concentrate water left behind is known as waste or brine.

Before it reaches the RO membrane, the water passes through prefilters that remove sediment and chlorine, as well as carbon filters that remove more volatile organic compounds. This is important to protect the membrane from clogs and to reduce the need for frequent membrane replacement. The membrane itself is highly durable and lasts for a long time, but it does eventually wear down.

Reverse osmosis is widely used for desalination of seawater and brackish water to produce drinkable water. It is also used to produce ultrapure water for semiconductor fabrication and boiler and power industry applications, as well as for medical and laboratory applications that require sterile water.

Alkaline Ceramic Ball

A point-of-use water purifier (POU) can be located in many places. It can be under a sink to filter all the drinking water in the house, or it may be used for specific appliances such as washing machines or dishwashers to reduce contaminants.

The most popular type of POU is the under-sink variety, which filters all the incoming tap water before it goes into the appliances. These units usually use a sediment and carbon filter, an activated carbon filtration stage, and a reverse osmosis membrane. They are designed to provide a few hundred gallons of filtered water before they require replacement of the filter media.

Ceramic balls are spherical, rolling elements that have a higher stiffness than steel and have lower thermal expansion. They are produced by pressing a ceramic powder binder mixture in a preform shape. They are sintered and finished with lapping and precision grinding to produce the desired dimensions and product specifications. They are typically made from white or brown ceramic material and have a high corrosion resistance.

The alkaline ceramic ball combines the latest technology and mineral materials with a high-temperature baking process. It can break down a bigger group of water molecule groups into smaller ones to activate the water and increase its PH level to the range of 8-10.5. It also contains more than 20 kinds of essential microelements and can release them into the water. It is commonly used for the remineralization of drinking water and household water purification for bath & cosmetics.