English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2007-02-01 17:07:25 · 4 answers · asked by Akash 2 in Science & Mathematics Chemistry

4 answers

Flocculants, or flocculating agents, are chemicals that are used to promote flocculation by causing colloids and other suspended particles in liquids to aggregate, forming a floc. Flocculants are used in water treatment processes to improve the sedimentation or filterability of small particles. For example, a flocculant may be used in swimming pool or drinking water filtration to aid removal of microscopic particles which would otherwise cause the water to be cloudy and which would be difficult or impossible to remove by filtration alone.

Many flocculants are multivalent cations such as aluminium, iron, calcium or magnesium. These positively charged molecules interact with negatively charged particles and molecules to reduce the barriers to aggregation. In addition, many of these chemicals, under appropriate pH and other conditions, react with water to form insoluble hydroxides which, upon precipitating, link together to form long chains or meshes, physically trapping small particles into the larger floc.

Long-chain polymer flocculants, such as modified polyacrylamides, are manufactured and sold by the flocculant producing business.

Modified Polyacrylamides can be supplied in dry or liquid form for use in the flocculation process. The most common liquid polyacrylamide is supplied as an emulsion with 10-40% actives and the rest is a carrier fluid, surfactants and latex. Emulsion polymers require activation to invert the emulsion and allow the electrolyte groups to be exposed.

Other factors such as pH, temperature, and salinity can induce flocculation or influence flocculation rates.

2007-02-03 15:53:10 · answer #1 · answered by Anonymous · 0 1

Flocculants, or flocculating agents, are chemicals that are used to promote flocculation by causing colloids and other suspended particles in liquids to aggregate, forming a floc. Flocculants are used in water treatment processes to improve the sedimentation or filterability of small particles.

2007-02-01 17:14:33 · answer #2 · answered by ? 6 · 0 1

What Is A Flocculant

2016-11-07 08:21:28 · answer #3 · answered by Anonymous · 0 0

flocculants are agents by adding it to a substance it makes finer particles clump together to form a bigger with larger density......
for eg:if flocculants are added to water,fine particles which are present in it clump together and settle down in a sedimentation tank which is used to purify water in treatment plants......

2007-02-01 17:21:11 · answer #4 · answered by appu 1 · 0 1

fedest.com, questions and answers