Ferric chloride is widely used for sewage treatment and Alum is widely used for water treatment.,
Which coagulant is generally not used in sewage treatment?
Examples of inorganic coagulants are as below: Aluminum Sulfate (Alum) – One of the most commonly used water treatment chemicals in the world. Alum is manufactured as a liquid, from which the crystalline form is dehydrated. Aluminum Chloride – A second choice to Alum as it is more expensive, hazardous and corrosive.Jul 19, 2016
Which is commonly used in sewage treatment?
Carbon filtering removes remaining contaminants and impurities by chemical absorption onto activated carbon. Filtration through sand (calcium carbonate) or fabric filters is the most common method used in municipal wastewater treatment.
Why are coagulants used in sewage treatment?
The primary purpose of using a coagulant besides removing vary fine particles from suspension is that this process results also in less turbidity of the water, i.e. clearer water. With coagulants' positive charge, the negatively charged particles in the water are neutralized.