How to Make Purified Water: Water Purification Methods & Their Uses


Pure water is attractive and delicious, and contemporary filtration methods are more powerful and versatile than ever before, achieving both purity and taste without demanding much technical knowledge from their users. The days when you needed a system for every filtration method are over. Commercial water filters often combine two or more techniques in a single tank, so your purification is much more than a process. It’s a strategy.

Multi-media water filters are significantly more efficient than single-media tanks. By relying on density and stratification, a single tank can achieve soft, safe drinking water, and many of today’s manufacturers will engineer a set of cartridge elements to suit your needs precisely.

There are a number of ways to purify water, each with its own advantages and disadvantages. Some methods are more suitable for certain applications than others. The most common methods of water purification are distillation, reverse osmosis, and deionisation.

1. Reverse Osmosis

Reverse osmosis uses a pump to create pressure that forces water through a semi-porous membrane, leaving most dissolved salts and minerals behind. A five-stage system combines reverse osmosis with carbon filters, removing microbial content, chlorine, and salts that cause water hardness. To find the right reverse osmosis performance for your plant, you’ll need a filter that achieves a high salt rejection and recovery rate. The latter tells you how much water you recover from the filtration process. A low recovery rate can weigh heavily on your utility bills, so look for 75% to 85%. Today’s reverse osmosis filters achieve their job using improved membrane technology. They can even achieve nanofiltration. The smaller the pore size, the more thoroughly it can remove contaminants.

Reverse Osmosis Advantages

Reverse osmosis removes particles, bacteria, and viruses from water, making it safer to drink. In addition, reverse osmosis systems are relatively small and easy to operate.

Another advantage of reverse osmosis is that it can be used to produce high-quality drinking water from alternative sources such as wastewater or stormwater runoff. This makes reverse osmosis an important tool for water quality and reducing the impact of flooding and droughts.

Reverse osmosis water purifiers come in a variety of sizes and can be used with public or private drinking water sources. Reverse osmosis systems are also versatile and can meet the needs of many different types of businesses, making it a popular choice for commercial applications as well.

Reverse Osmosis Disadvantages

The waste product of this process is known as brine. This brine can contain high levels of harmful salts which cause many problems, if not disposed of correctly.

It also requires a lot more energy than other forms of water purification because the RO membrane must be exposed to both sides by the osmotic pressure generated by adding salt solution (brine) on one side, therefore, forcing pure water through the membrane to the other side. The components that make up the RO system are typically expensive and need regular maintenance.

Another disadvantage of reverse osmosis systems is the high volumes of wastewater they produce. For every gallon of purified water produced, between three and five gallons of wastewater are created. The wastewater is typically composed of minerals, salts, organic substances and other contaminants that were present in the original water. This wastewater must then be properly disposed of because it cannot be returned to the supply system fresh for reuse or recycled into another process without treatment.

Despite its disadvantages, reverse osmosis water purification is considered the best way to remove contaminants from water. It is very effective at removing particles as small as 0.001 microns and is the preferred method of water purification for homes that use well water. The reverse osmosis system also removes dissolved minerals from the water which can be good or bad, depending on your needs.

2. Distillation

Distillation uses steam and condensation to purify water. It can remove pollutants, chemicals, and bacteria, so it’s often combined with reverse osmosis, particularly in hard water regions. Microscopic contaminants are removed with healthy minerals like fluoride, so the latter may need to be replaced after filtration. Commercial distillers can provide up to 5, 000 gallons of treated water a day, relying on electricity or gas to generate heat. Steam can be passed through water or fan-cooled tube or cone, but if pesticides and volatile organic compounds need to be dealt with, this method needs carbon support. Water systems can be containerised and customised to save you precious floor space.

Distillation Advantages

The benefits of purification through distillation are many. The first and most obvious is that it produces very high-quality water. This is because the water is vaporised and then condensed, so any contaminants or pollutants are left behind. Additionally, distillation does not use any chemicals or filters, so it is a completely natural process. This also makes it safer than other forms of purification, such as using activated carbon filters which can release harmful toxins into the water.

Another advantage of distillation is that it can be used to purify a wide range of liquids, including alcohol, vinegar, and essential oils. It is also an effective way to remove salt from seawater, making it suitable for drinking or irrigation. Distillation is also widely used in the transportation industry to meet fuel quality standards.

Perhaps most important, distillation is an effective way to purify water without using electricity or any other type of energy source. This makes it a natural choice for developing countries, where access to clean water can be difficult and costly.

Distillation Disadvantages

The first is that it is a slow process. The second is that it can be expensive, particularly if you are distilling a compound that is not readily available. Finally, the quality of the final product can vary depending on the equipment used and the skill of the operator.

Despite these disadvantages, distillation remains one of the most widely used techniques for purifying water.

3. Deionisation

Deionisation or Ion exchange remains one of the best purification methods for clearing barium, radium, nitrates, and arsenic from water. It leaves water clear and doesn’t produce the flat taste that’s characteristic of stale distilled water. Chelating and anion resins support the ion-exchange process by attracting positively charged ions. This makes ion exchange ideal for purifying natural spring water, which is often high in heavy metals and arsenic.

Deionisation Advantages

The main advantage of deionisation is that it produces pure water that is safe to drink. It also removes any unwanted tastes or smells from the water, making it more palatable. Additionally, deionised water does not cause scaling or corrosion, making it a good choice for industrial applications.

Deionisation is a popular method of water purification because it is cost-effective and easy to operate. It can be used to treat large volumes of water and can be incorporated into a variety of water treatment facilities.

Deionisation can be used in combination with other purification methods, such as reverse osmosis or distillation to remove the smallest trace elements of minerals and salts. This will help to ensure that the final product is free of all contaminants.

Deionisation Disadvantages

There are a few disadvantages to using deionised water. First, it is more costly than distilled water because the process of removing ions from the liquid takes additional time and money. In addition, since there are no minerals present in deionisation water, it will likely have a shorter shelf life if stored for a long period of time. If you purchase this type of water for use in your home, be sure to check the expiration date before buying.

Making Purified Water Easily

Here at Wychwood Water Systems, we are experts in designing, manufacturing, installing & commissioning, servicing, and refurbishment of water purification systems and encourage you to view our services to find the ideal water purification solution for you.

If you have any other questions or would like to learn more from our experts about which methods would be most effective for your business, we welcome you to contact us today.

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