The Process of Purification


Positive-displacement pumps are commonly used for creating pressure in all manner of sealed systems for various applications. They range from vehicle wash bays to water-purification systems. Positive displacement refers to the way the pump works, generating a pushing force as opposed to creating a vacuum. Reverse osmosis (RO) is a process of forcing a liquid through a semi-permeable membrane and, therefore, positive-displacement pumping equipment is required to generate the necessary force in such a system.

The oceans contain lots of free water but, despite covering more than 70% of the surface of our planet, the saltwater is unsuitable for human consumption. However, the potential of the reverse-osmosis process inspired several countries to build systems that pump salty seawater through such an RO system in order to produce potable water. While to focus is on the RO technology, this process would not have been possible in the first place without the myriad of behind-the-scenes positive-displacement pumps that form part of such a system. Bestline Manufacturing offers solutions for businesses in South Africa when it comes to the supply and manufacture of high-pressure systems.


Reverse Osmosis at A Glance

Water filtration is very important for humankind, ensuring that the water we drink is clean and safe. Many filtration processes have been invented and developed over the years, of which reverse osmosis is one. Filtering water through a semi-permeable membrane is a safe and energy-efficient way to produce potable water from saltwater or contaminated freshwater sources. With a high-pressure system working to your advantage, the water can be pumped through the membrane at a controlled pressure.

Reverse-osmosis pumps create a high pressure within such a system to create the necessary force with which to push contaminated liquids against a membrane to filtrate the liquid, ensuring that only purified water emerges on the other side. Basically, the unwanted dissolved and suspended chemical and biological elements in the liquid will be filtered out, remaining on the one side of the membrane and with only the pure water forced through. What makes reverse osmosis such a good call is that it consumes far less energy than other techniques used hitherto, such as distillation. Therefore, this process is ideal for producing even large volumes of potable water.

The liquid that high-pressure industrial systems used for cleaning and washing normally dispense is water, often mixed with detergents. However, high-pressure washers are usually not limited in the type of liquid that can be used in them, as long as these are not aggressive, corrosive, or acidic substances. In the case of reverse osmosis systems, of course, only water is used, as the purpose is not in the way it is dispensed, but what is dispensed – in this case, purified water. Be that as it may, in all these systems that require a liquid to be placed under pressure, positive-displacement pumps are typically used to create the necessary force within such a system.

Bestline Manufacturing is your supplier of high-pressure systems. We offer a sensible range of CAT pumps and custom high-pressure systems for your business. For more information, please peruse our website. Choose us today for all your high-pressure needs and solutions.