What is Water treatment?
Water treatment: is any process that improves the quality of water to make it more acceptable for a specific end-use, in which the end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses.
Water Treatment Chemicals: In the treatment of water, a great variety of chemicals are applied. Below are some of the different types of chemicals:
- Antifoam: Foam is a mass of bubbles created when certain types of gas are dispersed into a liquid. Strong films of liquid than surround the bubbles, forming large volumes of non-productive foam.
The cause of foam is a complicated study in physical chemistry, but we already know that its existence presents serious problems in both the operation of industrial processes and the quality of finished products.
- Boiler water chemicals: this include all chemicals that are used for the following applications: Oxygen scavenging; Scale inhibition; Corrosion inhibition; Antifoaming; Alkalinity control.
- Corrosion inhibitors: Corrosion is a general term that indicates the conversion of a metal into a soluble compound.
Corrosion can lead to failure of critical parts of boiler systems,
That is why corrosion inhibitors are often applied.
There are five different kinds of corrosion inhibitors. These are:
1. Passivity inhibitors (passivators). They are most effective and consequently the most widely used.
2. Cathodic inhibitors. Here arsenic and antimony, work by making the recombination and discharge of hydrogen more difficult.
3. Organic inhibitors. The affect the entire surface of a corroding metal when present in certain concentration, and protect the metal by forming a hydrophobic film on the metal surface
4. Precipitation inducing inhibitors. They cause the formation of precipitates on the surface of the metal,
5. Volatile Corrosion Inhibitors (VCI). These are compounds transported in a closed environment to the site of corrosion by volatilization from a source.