Alum Water Treatment
Alum water treatment is generally used to treat polluted waters. To treat polluted water, we use coagulation – flocculation process and in this case, alum is used as a coagulant. Alum treatment is done before the sedimentation and filtration process. The main reason for doing this is to increase the ability of a treatment process to remove unwanted particles.
Coagulation Process
During the coagulation process, the charges on the particles become destabilized. Coagulation of opposite charges of suspended solids is combined to water. To neutralise the negative charges on dispersed non-settable solids, it has to be done.
Al2(SO4)3.18H2O + 6HCO3- → 2Al(OH)3 + 6CO2 + 18H2 + 3SO4-2
After doing this, the small particles that are suspended stick together.
Flocculation
To stimulate bonding between different types of particles, we added chemical coagulants to water through a process. This process is known as Flocculation. Through this process, we can get larger aggregates which can separate easily .
Al2(SO4)3.18H2O + 6HCO3- → 2Al(OH)3 + 6CO2 + 18H2+ 3SO4-2
Alum – Formula, Types, Production, Properties, Uses
Alum is an important inorganic compound which are double sulfates of a monovalent metal (such as potassium, sodium, or ammonium) and a trivalent metal (such as aluminum, chromium, or iron). Alum is widely used in industries as well as medical purposes. It has antiseptic property and is used after shave. It is often called “Fitkari.”
In this article, we learn about alum, its properties, different types of alum, its uses, and many more important facts related to it.
Table of Content
- What is Alum?
- Production of Alum
- Properties of Alum
- Types of Alum
- Uses of Alum
- Alum Water Treatment
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