Water purification is one of the vital issues in today’s world. Every day, people and companies are looking for ways to improve the quality of water consumed or the water needed to produce their industrial products. One of the factors that can affect water quality is the formation of sediments in water. These unwanted substances can cause problems. including reduction of water flow rate, drinking water pollution, reduction of efficiency of heating and air conditioning systems, and failure of industrial equipment. In this article, we introduce the most important anti-sediment materials for water purification.
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In many industries, antifouling materials (Anti-scalant) have a very vital role because they prevent the formation of deposits caused by minerals and salts. These sediments, which are formed due to the accumulation of minerals such as calcium and magnesium, can severely reduce the efficiency of equipment, especially membrane filters that are used as the main step in the water filtration process. Also, the sediments that form on the surface of the membrane membrane and equipment will increase the maintenance costs and energy consumption in the system.
Activated carbon is a purifying substance with great importance in the water purification process. This material is prepared from a normal carbon source such as wood, fruit peels, charcoal or organic waste. Activated carbon has a process structure and empty texture that has a very large surface area. These features allow activated carbon to absorb and remove organic substances, minerals, unwanted taste and smell from water.
Resins are a type of organic solid material that is widely used in the water purification process. These materials are usually prepared in the form of small spheres that look like pellets or grains and are used in various water purification equipment. One of the main applications of resins in water purification is ion exchange.
In ion exchange, resins absorb different minerals from water and give other ions to water in return. This process is very useful for removing mineral ions such as sediment-forming cations (such as calcium and magnesium) from water. Among the famous resins in ion exchange, we can refer to ordinary resins and resins specific to the removal of special ions.
In the water purification process, resins are mainly used in ion exchange devices such as ion exchange columns or special water purification units. The dirty water passes through these units and the resins absorb the unwanted ions in the water and give other ions to the water instead. This process improves water quality and removes unwanted substances.
Calcium carbonate (CaCO3)
Calcium carbonate is one of the most important sediment-forming substances in water. This substance is formed in water in the form of solid compounds and is known as water blacksmith. To control calcium carbonate and prevent the formation of its deposits, anti-deposit materials such as polyphosphates are used.
Calcium sulfate (CaSO4)
Calcium sulfate is another substance that can form sediments in water. These deposits are also known as chalk. To inhibit the formation of calcium sulfate deposits, anti-deposit materials such as citrates and hexametaphosphates are used.
Silicates are substances that are formed from various minerals and can form unwanted sediments in water. To control silicates and prevent the formation of sediments, anti-sediment materials such as silicates that bind to cations (saturating cations) are used.
Magnesium is also one of the substances that can cause sediments in water. To control the amount of magnesium in water, anti-sediment materials such as orthophosphates are used.
Aluminum is known as one of the most important anti-fouling materials in water treatment. This substance acts as a non-binding to cations and can prevent the formation of sediments in water.
Water purification is a complex and vital issue in which it is necessary to use anti-sediment materials to maximize water quality and reduce unwanted effects of sediments in water. Choosing the right anti-fouling materials and using them correctly can help improve water quality and increase the useful life of water treatment equipment and systems.