What chemical is used for water treatment?

Water treatment is a process that improves the quality of water to make it suitable for specific end-use. The end use may be beverages, industrial water, irrigation, river maintenance, water entertainment, or many other uses, including safe return to the environment. Water treatment can remove pollutants and undesirable components, or reduce their concentration so that the water is suitable for its desired end-use. This treatment is vital to human health and can benefit humans from drinking water and irrigation. So, what chemicals are used in water treatments?

Here is the content list:

l How many types of chemicals can be used for water treatment?

l What are the most commonly used types of water treatment chemicals?

How many types of chemicals can be used for water treatment?

Using chemicals for water treatment has a long history ever since the industrialization of humans. During such a long history of water treatment chemicals, a great variety of chemicals have been developed and been used in the water treating industry. Basically, 15 types of water treatment chemicals are still in use nowadays. Which are algaecides, antifoams, biocides, boiler water chemicals, coagulants, corrosion inhibitors, disinfectants, defoamers, flocculants, neutralizing agents, oxidants, oxygen scavengers, pH conditioners, resin cleaners, and scale inhibitors.

What are the most commonly used types of water treatment chemicals?

Among all the 15 types of water treatment chemicals, there are three types of them are used most often. The first is algaecides, which are water treatment chemicals that kill algae and cyanobacteria or green algae when added to water. Algaecides are effective against algae, but due to environmental reasons, they are not very useful in eliminating algae blooms. Defoamer is another type of water treatment chemical that is special used to eliminate foam. The cause of foam is complicated research in physical chemistry, but we already know that the existence of foam has serious problems in the operation of industrial processes and the quality of the final product is affected. If uncontrolled, foam will reduce the capacity of the equipment and increase the construction period and cost. The defoamer blend contains oil mixed with a small amount of silica. Due to these two properties of silicones, they can decompose foam. Antifoam powder covers a group of products based on modified polydimethylsiloxane. The defoamer is chemically inert and will not react with the defoaming medium. They are odorless, tasteless, non-volatile, non-toxic, and will not corrode materials. Corrosion inhibitor is another kind of water treatment chemical. Corrosion is a general term that refers to the conversion of metals into soluble compounds. Corrosion can cause the failure of key components of the boiler system, the deposition of corrosion products in key heat exchange areas, and the overall efficiency decline. This is why corrosion inhibitors are often used. Inhibitors are chemical substances that react with the metal surface and can provide a certain degree of protection for the metal surface. To put it in a more specific way, Inhibitors can form a film on the surface of the metal, therefore isolate the metal and the oxygen in the open air, so that the reaction between the metal and the oxygen could be largely decreased.

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