Corrosion is your worst adversary when it comes to keeping water treatment plant in good condition. Corrosion, which destroys water treatment equipment by eating away at the interior surfaces of tanks and pipes, due to stresses and mineral deposits, results in leaks, damage, and expensive repairs.
As a result, it is important to control corrosion for the long life of your water treatment equipment’s.
Why does corrosion occur?
Although, rust is a frequent issue, it needs a particular precise set of circumstances to manifest. When corrosive materials are present in a system's water, corrosion occurs.
Corrosive water is referred to as unstable or aggressive water. Rust and excessive calcium carbonate scale and deposits are produced, by the extremely concentrated concentration of corrosive substances, in unstable water.
Water is referred to as steady if it does not cause significant corrosion. Because, there are far fewer corrosive components in steady water, corrosion doesn't happen as quickly.
How to control corrosion?
Water treatment specialists work to stabilize water to reduce corrosion and prevent rusting, and corrosion of tanks and pipes. Water comes in a wide variety of forms, ranging from the stable to the aggressive, and factors like pH, hardness, and alkalinity all affect how much corrosion a given water will cause.
These are a few of the main causes of corrosion.
· Dissolvable substances
Scales or corrosion will typically form in water with an improper alkalinity balance, as well as water with an excessively high or low pH. The hardness of water is also influenced by the presence of other substances, including carbon dioxide, dissolved particles, and even oxygen.
For instance, water turns corrosive when its dissolved oxygen content is high. The same holds true for water that contains high concentrations of substances, like nitrates and chlorine.
While, dissolvable substances play a big part in how corrosive water is, you also need to be very aware of the water temperature. Higher temperatures typically lead to more fast corrosion, thus water treatment experts wanting to reduce corrosion must take this into serious account.
It's crucial to keep in mind, though, that the relationship between temperature and water corrosion, isn't always as straightforward as it would seem. In some circumstances, hot water temperatures can reduce the solubility of calcium carbonate in water, slowing the rate of corrosion.
· Speed/velocity of water
Corrosion is influenced by the water's flow velocity just as much as, by the water's temperature and soluble constituents. Water travels through pipes in systems with modest flow rates without rupturing, which is optimal.
However, due to high quantities of oxygen in the water in systems with lower flow rates, corrosion accelerates. Rapid flow rates can result in the pressure of the water itself, corroding the pipe without any help from corrosion. As a result, it's best for water systems to use moderate flow rates, wherever possible.
The presence of bacteria in the water is one of the final factors that affects corrosion rate. While, it is well known that bacteria can induce corrosion, they can also hasten already-existing corrosion.
By condensing the oxygen cells into a small space, bacteria that grow on pipe walls accelerate corrosion. Furthermore, bacteria release carbon dioxide, which when come into contact with water, can accelerate corrosion.
Corrosion control involves several intricate components. Water system professionals must control flow rates and a variety of other complex factors, in addition to regulating bacteria, soluble chemicals, and temperature levels to keep water treatment systems in functional, and in corrosion-resistant condition.
How can we assist?
Please get in touch with Netsol Water right away if you want to learn more, about our solutions for corrosion control in water and wastewater treatment plants.