Aid agent and flocculant are two chemicals used during water treatment. They have different functions and application scenarios.
Coagulant is a chemical agent for promoting suspended substances and solid substances to form a cluster. It is usually added to the water, changing the surface charge of the charged particles in the water through chemical reactions, so that it is condensed together to form a larger cluster or colloidal particles. The role of aid agent is to increase the particle size and weight of the suspension, which makes it easier to precipitate and is separated. Common coagulants include iron chloride, polymerized aluminum chloride.
FLOCCULANT (FLOCCULANT) is a chemical agent used to promote suspended substances and dissolved substances. After the suspended substance is treated by aid agent, a relatively large cluster or colloidal particles are formed. The role of flocculant is to further gather these clusters to form floccus, thereby improving the efficiency of solid liquid separation. The flocculant can increase the interaction force between the suspended particles, making it easier to settle or float. Common flocculants include polyacrylamide (PAM), polymer, etc.
In general, the aid agent mainly plays the role of initial condensing suspension and solubility, and forms a larger cluster; the flocculant further promotes these clusters to form a flocculent cluster to improve the liquid solid fluid seperate effect. In practical applications, pre -treatment is usually used first, and a flocculant is added for follow -up treatment to achieve better water purification effect.
It should be noted that when the specific selection and use of condens agent and flocculant should be evaluated according to factors such as water quality, pollutant type and treatment requirements, and referring to the relevant water treatment process and guide to correctly operate.