Types Of Chemicals Used In Wastewater Treatment?

By Author: Epsco LLC
Total Articles: 16
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Water purification is the removal of contaminants to produce potable water. When water is purified, harmful substances, parasites, bacteria, algae, fungi and any other type of agent that can reduce its quality are eliminated.With efficient Water Treatment Systems we reduce the risk of new contamination in the distribution system. Even natural spring water that was considered safe for all practical purposes in the 19th century must now be tested to determine what type of treatment is necessary.
Types of contamination
Untreated water contains natural elements and different types of components, including dangerous chemicals such as fertilizers, pesticides, petroleum derivatives or heavy metals. It can contain microbiological contamination, as well as different types of organic and inorganic compounds, such as ions, sediments, colloids, and suspensions. Wastewater is highly harmful to the natural environment and therefore proper Water Treatment is necessary.
Today, sewage disposal and water purification are a huge challenge faced by more and more cities, factories, plants and households around the world. Physical ...
... treatment methods that include flocculation, modification and adsorption cannot always provide drinking water of adequate quality. It is why Water Treatment Dubai must go through several other methods, to ensure the quality of the pure water.
Wastewater treatment
The wastewater is any kind of water resources, whose quality has been affected. The reuse of wastewater is a very attractive approach for the protection of the environment since waste water treatment allows the use of natural resources for human development and prevents the indiscriminate waste of such a vital resource in human life. The shortage of fresh water as a consequence of demographic growth and climate change, has led to the implementation of such a laudable ecological proposal in the economic and industrial development of life in society.
The discharge of wastewater into hydrological channels without the respective treatment can lead to the total destruction. Waste water treatment consists of a series of physical, chemical and biological processes. This process of purification of wastewater is divided into 4 stages such as preliminary or pre-treatment, first, secondary and tertiary.

Types of chemical used
For the chemical treatment of waste water, Water Treatment Companies in Dubai give special importance with the use of chemicals. A few of them are –
 Algaecide: These chemicals kill algae when added to water.
 Powder: The antifoam powder covers a group of products based on modified Polydimethylsiloxane. They are odorless, tasteless, permanent, non-toxic and do not corrode materials.
 Emulsions: Antifoam emulsions have the same characteristics as the powder form. The only difference is that they can also be applied in aqueous solutions.
 Coagulants: When referring to coagulants, positive ions with high valence are preferred. Generally aluminum and iron are applied.
 Corrosion inhibitors: Corrosion can lead to damage to critical parts of the boiler system. This is the reason why corrosion inhibitors are often applied.
 Disinfectants: Disinfectants kill unwanted microorganisms in water. There are several types of disinfectants: Chlorine, Chlorine dioxide, Ozone, etc.
 Oxidizers: Chemical oxidation processes use oxidants to reduce COD/BOD levels, and to remove oxidize inorganic and organic components.
 PH Conditioners: During water treatment, pH adjustment may be required. The pH is increased or decreased through the addition of bases or acids.

How does water disinfection work?

Water disinfection means the removal, deactivation or elimination of pathogenic microorganisms that exist in the water. These agents also extract organic pollutants from the water, which are nutrients or shelter for microorganisms. The combination of different steps for water purification is used for the production of drinking water and safe for health. As an additional measure, professional water treatment companies use a secondary water disinfection method to avoid and protect the water from biological contamination that could occur in the distribution network.Normally a different type of disinfectant is used than the one used in the purification process during previous stages. Secondary disinfection treatment, such as Chilled Water Chemical Treatment, ensures that bacteria do not multiply in the water distribution system. This is necessary because bacteria can remain in the system and in the water despite a primary disinfection treatment.